36113 Commits

Author	SHA1	Message	Date
Walter Wu	23f61f0fe1	kasan: record task_work_add() call stack ... Why record task_work_add() call stack? Syzbot reports many use-after-free issues for task_work, see [1]. After seeing the free stack and the current auxiliary stack, we think they are useless, we don't know where the work was registered. This work may be the free call stack, so we miss the root cause and don't solve the use-after-free. Add the task_work_add() call stack into the KASAN auxiliary stack in order to improve KASAN reports. It helps programmers solve use-after-free issues. [1]: https://groups.google.com/g/syzkaller-bugs/search?q=kasan%20use-after-free%20task_work_run Link: https://lkml.kernel.org/r/20210316024410.19967-1-walter-zh.wu@mediatek.com Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com> Suggested-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Acked-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Andrey Konovalov <andreyknvl@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:42 -07:00
Nicholas Piggin	e82b9b3086	kernel/dma: remove unnecessary unmap_kernel_range ... vunmap will remove ptes. Link: https://lkml.kernel.org/r/20210322021806.892164-3-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Cédric Le Goater <clg@kaod.org> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:40 -07:00
Johannes Weiner	dc26532aed	cgroup: rstat: punt root-level optimization to individual controllers ... Current users of the rstat code can source root-level statistics from the native counters of their respective subsystem, allowing them to forego aggregation at the root level. This optimization is currently implemented inside the generic rstat code, which doesn't track the root cgroup and doesn't invoke the subsystem flush callbacks on it. However, the memory controller cannot do this optimization, because cgroup1 breaks out memory specifically for the local level, including at the root level. In preparation for the memory controller switching to rstat, move the optimization from rstat core to the controllers. Afterwards, rstat will always track the root cgroup for changes and invoke the subsystem callbacks on it; and it's up to the subsystem to special-case and skip aggregation of the root cgroup if it can source this information through other, cheaper means. This is the case for the io controller and the cgroup base stats. In their respective flush callbacks, check whether the parent is the root cgroup, and if so, skip the unnecessary upward propagation. The extra cost of tracking the root cgroup is negligible: on stat changes, we actually remove a branch that checks for the root. The queueing for a flush touches only per-cpu data, and only the first stat change since a flush requires a (per-cpu) lock. Link: https://lkml.kernel.org/r/20210209163304.77088-6-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Tejun Heo <tj@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Koutný <mkoutny@suse.com> Cc: Roman Gushchin <guro@fb.com> Cc: Shakeel Butt <shakeelb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:37 -07:00
Johannes Weiner	a7df69b81a	cgroup: rstat: support cgroup1 ... Rstat currently only supports the default hierarchy in cgroup2. In order to replace memcg's private stats infrastructure - used in both cgroup1 and cgroup2 - with rstat, the latter needs to support cgroup1. The initialization and destruction callbacks for regular cgroups are already in place. Remove the cgroup_on_dfl() guards to handle cgroup1. The initialization of the root cgroup is currently hardcoded to only handle cgrp_dfl_root.cgrp. Move those callbacks to cgroup_setup_root() and cgroup_destroy_root() to handle the default root as well as the various cgroup1 roots we may set up during mounting. The linking of css to cgroups happens in code shared between cgroup1 and cgroup2 as well. Simply remove the cgroup_on_dfl() guard. Linkage of the root css to the root cgroup is a bit trickier: per default, the root css of a subsystem controller belongs to the default hierarchy (i.e. the cgroup2 root). When a controller is mounted in its cgroup1 version, the root css is stolen and moved to the cgroup1 root; on unmount, the css moves back to the default hierarchy. Annotate rebind_subsystems() to move the root css linkage along between roots. Link: https://lkml.kernel.org/r/20210209163304.77088-5-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Michal Koutný <mkoutny@suse.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:37 -07:00
Muchun Song	27faca83a7	mm: memcontrol: fix kernel stack account ... For simplification commit 991e767385 ("mm: memcontrol: account kernel stack per node") changed the per zone vmalloc backed stack pages accounting to per node. By doing that we have lost a certain precision because those pages might live in different NUMA nodes. In the end NR_KERNEL_STACK_KB exported to the userspace might be over estimated on some nodes while underestimated on others. But this is not a real world problem, just a problem found by reading the code. So there is no actual data to showing how much impact it has on users. This doesn't impose any real problem to correctnes of the kernel behavior as the counter is not used for any internal processing but it can cause some confusion to the userspace. Address the problem by accounting each vmalloc backing page to its own node. Link: https://lkml.kernel.org/r/20210303151843.81156-1-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:37 -07:00
Petr Mladek	9bf3bc949f	watchdog: cleanup handling of false positives ... Commit d6ad3e286d ("softlockup: Add sched_clock_tick() to avoid kernel warning on kgdb resume") introduced touch_softlockup_watchdog_sync(). It solved a problem when the watchdog was touched in an atomic context, the timer callback was proceed right after releasing interrupts, and the local clock has not been updated yet. In this case, sched_clock_tick() was called in watchdog_timer_fn() before updating the timer. So far so good. Later commit 5d1c0f4a80 ("watchdog: add check for suspended vm in softlockup detector") added two kvm_check_and_clear_guest_paused() calls. They touch the watchdog when the guest has been sleeping. The code makes my head spin around. Scenario 1: + guest did sleep: + PVCLOCK_GUEST_STOPPED is set + 1st watchdog_timer_fn() invocation: + the watchdog is not touched yet + is_softlockup() returns too big delay + kvm_check_and_clear_guest_paused(): + clear PVCLOCK_GUEST_STOPPED + call touch_softlockup_watchdog_sync() + set SOFTLOCKUP_DELAY_REPORT + set softlockup_touch_sync + return from the timer callback + 2nd watchdog_timer_fn() invocation: + call sched_clock_tick() even though it is not needed. The timer callback was invoked again only because the clock has already been updated in the meantime. + call kvm_check_and_clear_guest_paused() that does nothing because PVCLOCK_GUEST_STOPPED has been cleared already. + call update_report_ts() and return. This is fine. Except that sched_clock_tick() might allow to set it already during the 1st invocation. Scenario 2: + guest did sleep + 1st watchdog_timer_fn() invocation + same as in 1st scenario + guest did sleep again: + set PVCLOCK_GUEST_STOPPED again + 2nd watchdog_timer_fn() invocation + SOFTLOCKUP_DELAY_REPORT is set from 1st invocation + call sched_clock_tick() + call kvm_check_and_clear_guest_paused() + clear PVCLOCK_GUEST_STOPPED + call touch_softlockup_watchdog_sync() + set SOFTLOCKUP_DELAY_REPORT + set softlockup_touch_sync + call update_report_ts() (set real timestamp immediately) + return from the timer callback + 3rd watchdog_timer_fn() invocation + timestamp is set from 2nd invocation + softlockup_touch_sync is set but not checked because the real timestamp is already set Make the code more straightforward: 1. Always call kvm_check_and_clear_guest_paused() at the very beginning to handle PVCLOCK_GUEST_STOPPED. It touches the watchdog when the quest did sleep. 2. Handle the situation when the watchdog has been touched (SOFTLOCKUP_DELAY_REPORT is set). Call sched_clock_tick() when touch_*sync() variant was used. It makes sure that the timestamp will be up to date even when it has been touched in atomic context or quest did sleep. As a result, kvm_check_and_clear_guest_paused() is called on a single location. And the right timestamp is always set when returning from the timer callback. Link: https://lkml.kernel.org/r/20210311122130.6788-7-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Laurence Oberman <loberman@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:36 -07:00
Petr Mladek	9f113bf760	watchdog: fix barriers when printing backtraces from all CPUs ... Any parallel softlockup reports are skipped when one CPU is already printing backtraces from all CPUs. The exclusive rights are synchronized using one bit in soft_lockup_nmi_warn. There is also one memory barrier that does not make much sense. Use two barriers on the right location to prevent mixing two reports. [pmladek@suse.com: use bit lock operations to prevent multiple soft-lockup reports] Link: https://lkml.kernel.org/r/YFSVsLGVWMXTvlbk@alley Link: https://lkml.kernel.org/r/20210311122130.6788-6-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Laurence Oberman <loberman@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:36 -07:00
Petr Mladek	1bc503cb4a	watchdog/softlockup: remove logic that tried to prevent repeated reports ... The softlockup detector does some gymnastic with the variable soft_watchdog_warn. It was added by the commit 58687acba5 ("lockup_detector: Combine nmi_watchdog and softlockup detector"). The purpose is not completely clear. There are the following clues. They describe the situation how it looked after the above mentioned commit: 1. The variable was checked with a comment "only warn once". 2. The variable was set when softlockup was reported. It was cleared only when the CPU was not longer in the softlockup state. 3. watchdog_touch_ts was not explicitly updated when the softlockup was reported. Without this variable, the report would normally be printed again during every following watchdog_timer_fn() invocation. The logic has got even more tangled up by the commit ed235875e2 ("kernel/watchdog.c: print traces for all cpus on lockup detection"). After this commit, soft_watchdog_warn is set only when softlockup_all_cpu_backtrace is enabled. But multiple reports from all CPUs are prevented by a new variable soft_lockup_nmi_warn. Conclusion: The variable probably never worked as intended. In each case, it has not worked last many years because the softlockup was reported repeatedly after the full period defined by watchdog_thresh. The reason is that watchdog gets touched in many known slow paths, for example, in printk_stack_address(). This code is called also when printing the softlockup report. It means that the watchdog timestamp gets updated after each report. Solution: Simply remove the logic. People want the periodic report anyway. Link: https://lkml.kernel.org/r/20210311122130.6788-5-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Laurence Oberman <loberman@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:36 -07:00
Petr Mladek	fef06efc2e	watchdog/softlockup: report the overall time of softlockups ... The softlockup detector currently shows the time spent since the last report. As a result it is not clear whether a CPU is infinitely hogged by a single task or if it is a repeated event. The situation can be simulated with a simply busy loop: while (true) cpu_relax(); The softlockup detector produces: [ 168.277520] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [cat:4865] [ 196.277604] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [cat:4865] [ 236.277522] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [cat:4865] But it should be, something like: [ 480.372418] watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [cat:4943] [ 508.372359] watchdog: BUG: soft lockup - CPU#2 stuck for 52s! [cat:4943] [ 548.372359] watchdog: BUG: soft lockup - CPU#2 stuck for 89s! [cat:4943] [ 576.372351] watchdog: BUG: soft lockup - CPU#2 stuck for 115s! [cat:4943] For the better output, add an additional timestamp of the last report. Only this timestamp is reset when the watchdog is intentionally touched from slow code paths or when printing the report. Link: https://lkml.kernel.org/r/20210311122130.6788-4-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Laurence Oberman <loberman@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:36 -07:00
Petr Mladek	c9ad17c991	watchdog: explicitly update timestamp when reporting softlockup ... The softlockup situation might stay for a long time or even forever. When it happens, the softlockup debug messages are printed in regular intervals defined by get_softlockup_thresh(). There is a mystery. The repeated message is printed after the full interval that is defined by get_softlockup_thresh(). But the timer callback is called more often as defined by sample_period. The code looks like the soflockup should get reported in every sample_period when it was once behind the thresh. It works only by chance. The watchdog is touched when printing the stall report, for example, in printk_stack_address(). Make the behavior clear and predictable by explicitly updating the timestamp in watchdog_timer_fn() when the report gets printed. Link: https://lkml.kernel.org/r/20210311122130.6788-3-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Laurence Oberman <loberman@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:35 -07:00
Petr Mladek	7c0012f522	watchdog: rename __touch_watchdog() to a better descriptive name ... Patch series "watchdog/softlockup: Report overall time and some cleanup", v2. I dug deep into the softlockup watchdog history when time permitted this year. And reworked the patchset that fixed timestamps and cleaned up the code[2]. I split it into very small steps and did even more code clean up. The result looks quite strightforward and I am pretty confident with the changes. [1] v2: https://lore.kernel.org/r/20201210160038.31441-1-pmladek@suse.com [2] v1: https://lore.kernel.org/r/20191024114928.15377-1-pmladek@suse.com This patch (of 6): There are many touch_*watchdog() functions. They are called in situations where the watchdog could report false positives or create unnecessary noise. For example, when CPU is entering idle mode, a virtual machine is stopped, or a lot of messages are printed in the atomic context. These functions set SOFTLOCKUP_RESET instead of a real timestamp. It allows to call them even in a context where jiffies might be outdated. For example, in an atomic context. The real timestamp is set by __touch_watchdog() that is called from the watchdog timer callback. Rename this callback to update_touch_ts(). It better describes the effect and clearly distinguish is from the other touch_*watchdog() functions. Another motivation is that two timestamps are going to be used. One will be used for the total softlockup time. The other will be used to measure time since the last report. The new function name will help to distinguish which timestamp is being updated. Link: https://lkml.kernel.org/r/20210311122130.6788-1-pmladek@suse.com Link: https://lkml.kernel.org/r/20210311122130.6788-2-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Laurence Oberman <loberman@redhat.com> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-04-30 11:20:35 -07:00
Linus Torvalds	8ca5297e7e	Kconfig updates for v5.13 ... - Change 'option defconfig' to the environment variable KCONFIG_DEFCONFIG_LIST - Refactor tinyconfig without using allnoconfig_y - Remove 'option allnoconfig_y' syntax - Change 'option modules' to 'modules' - Do not use /boot/config-* etc. as base config for cross-compilation - Fix a search bug in nconf - Various code cleanups -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmCKTy8VHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGLFkQAJFaFORoOIGvkErYkTNv64LpDZsB ck7xV6gAUB0iSfv6x5mKfbZRWllc0GMr0dNY2hKs0iazvrvm3OKheLNR6zQ7OwI4 aPd46lD7Dpvl09iNJcAAwVkwuqAcISKKk8wBhTsdFNx6A+ouPxNPWZHics5SqT14 jw6YGkI/MJaDx74izRlDKOiBlrpq1gM9pyAud2gHyWfksxu9E2JQ2guao/UpB0I7 XmCC8HzDdMP637gvA0cMj/+thW0/6ws8ev0bwhHTNFnB1F+N5Aop1urWnwTQKIoy WatTUfvhikaZPbJUBxOA21xbmhN4NnBxICXcmsFRLxYIsaZJY1UOk5hDZ1MvptnB jnOKUH52yqWeHMvBLqdsxSxktUawg3U85v5ygtYOUUJmuyhkP5nz3095eeFXS/J6 3KZAnSfRubb2XbfZMG0YUUtVoi782Mv0OvdRbyvON/TsXFP8T1skKUtCaDaXm31Z ApjIs1xViuuTXfRqmk7vmjTn0oWIhRahnS49Wl1Ro00JH9VjBJz7N3T+rJ5naY2B GOCM2oTWh/qMW5makFCQNFEsaSr5HBsueepRhUoUOQcyJHQFuK/Cb+C4Rv2gp5ao 3QYp2x49v0c+dkEmkmOW4LwUxjKUe573D3eVLcGnq+4MYouY7XGFWFKfUKYuPgCL aqVi/QHKNZpd5Wko =+eSh -----END PGP SIGNATURE----- Merge tag 'kconfig-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kconfig updates from Masahiro Yamada: - Change 'option defconfig' to the environment variable KCONFIG_DEFCONFIG_LIST - Refactor tinyconfig without using allnoconfig_y - Remove 'option allnoconfig_y' syntax - Change 'option modules' to 'modules' - Do not use /boot/config-* etc. as base config for cross-compilation - Fix a search bug in nconf - Various code cleanups * tag 'kconfig-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) kconfig: refactor .gitignore kconfig: highlight xconfig 'comment' lines with '***' kconfig: highlight gconfig 'comment' lines with '***' kconfig: gconf: remove unused code kconfig: remove unused PACKAGE definition kconfig: nconf: stop endless search loops kconfig: split menu.c out of parser.y kconfig: nconf: refactor in print_in_middle() kconfig: nconf: remove meaningless wattrset() call from show_menu() kconfig: nconf: change set_config_filename() to void function kconfig: nconf: refactor attributes setup code kconfig: nconf: remove unneeded default for menu prompt kconfig: nconf: get rid of (void) casts from wattrset() calls kconfig: nconf: fix NORMAL attributes kconfig: mconf,nconf: remove unneeded '\0' termination after snprintf() kconfig: use /boot/config-* etc. as DEFCONFIG_LIST only for native build kconfig: change sym_change_count to a boolean flag kconfig: nconf: fix core dump when searching in empty menu kconfig: lxdialog: A spello fix and a punctuation added kconfig: streamline_config.pl: Couple of typo fixes ...	2021-04-29 14:32:00 -07:00
Linus Torvalds	b0030af53a	Kbuild updates for v5.13 ... - Evaluate $(call cc-option,...) etc. only for build targets - Add CONFIG_VMLINUX_MAP to generate .map file when linking vmlinux - Remove unnecessary --gcc-toolchains Clang flag because the --prefix flag finds the toolchains - Do not pass Clang's --prefix flag when using the integrated as - Check the assembler version in Kconfig time - Add new CONFIG options, AS_VERSION, AS_IS_GNU, AS_IS_LLVM to clean up some dependencies in Kconfig - Fix invalid Module.symvers creation when building only modules without vmlinux - Fix false-positive modpost warnings when CONFIG_TRIM_UNUSED_KSYMS is set, but there is no module to build - Refactor module installation Makefile - Support zstd for module compression - Convert alpha and ia64 to use generic shell scripts to generate the syscall headers - Add a new elfnote to indicate if the kernel was built with LTO, which will be used by pahole - Flatten the directory structure under include/config/ so CONFIG options and filenames match - Change the deb source package name from linux-$(KERNELRELEASE) to linux-upstream -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmCKOLUVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGdq8P/2z+saxIWGXVWt0ggavR0vimcY4e NQIKGu9uZpo/lfoC78UG8HO+XvzvPUrcRuOX+WIVr2GfScgVnweDukexUAY0/2oi 4UvqhndJ0sjEwRj8mXXJ0O+PED+OtgrqrbhkLq9wHQd/jpSD4XEWXwn1g1XVrTZu WbwP6b1G/Rnjp2lz3HKC017rPkmfsCFQB7r+hbJGKhT0rCaceheUuBvGa/XqLknr IOyaUAY76u3Gtj6fVY1rk70kQgDMF8+LJPgdSSZ/XPCvbNJQAeop36EeRNfmxGIh vQhFJRJeqy+K5MhCpdGtTGYDawlmQVn/f/99SkDw9F04S4ZL2Xnaaqw4L1QDhjTh xBlckbPvmq36F4xSqWd5kYF3iwS+LsEJROwZKFLEVDb3zMsRQPEGQM/556QmrBi2 5KXzwOYEJKuobWr1hQ3PwLumJKTPGLvGEFB3Bq2eG8LrgpOAHPI4ejC2EBu0vCez QbskP2lPlMj3MbL5iZg+6ZRlOChZ7RUrSDj6+iTeOcinmXHqQONCL6qy+um4Rfcb zUkfwTlqM9d88u6AbO2VvQMOobMjvp4bvmqi/Xv8IiTukLHco4tc8zTuySmZwSyI rd3RKYn367qWztX5YyaoGRPVmlMG7ssbRc4fkXiV13vfeZebNfVwlX/CHv9+IWwN RVnMhYBhUZR68h6z =ti9L -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Evaluate $(call cc-option,...) etc. only for build targets - Add CONFIG_VMLINUX_MAP to generate .map file when linking vmlinux - Remove unnecessary --gcc-toolchains Clang flag because the --prefix flag finds the toolchains - Do not pass Clang's --prefix flag when using the integrated as - Check the assembler version in Kconfig time - Add new CONFIG options, AS_VERSION, AS_IS_GNU, AS_IS_LLVM to clean up some dependencies in Kconfig - Fix invalid Module.symvers creation when building only modules without vmlinux - Fix false-positive modpost warnings when CONFIG_TRIM_UNUSED_KSYMS is set, but there is no module to build - Refactor module installation Makefile - Support zstd for module compression - Convert alpha and ia64 to use generic shell scripts to generate the syscall headers - Add a new elfnote to indicate if the kernel was built with LTO, which will be used by pahole - Flatten the directory structure under include/config/ so CONFIG options and filenames match - Change the deb source package name from linux-$(KERNELRELEASE) to linux-upstream * tag 'kbuild-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (42 commits) kbuild: Add $(KBUILD_HOSTLDFLAGS) to 'has_libelf' test kbuild: deb-pkg: change the source package name to linux-upstream tools: do not include scripts/Kbuild.include kbuild: redo fake deps at include/config/*.h kbuild: remove TMPO from try-run MAINTAINERS: add pattern for dummy-tools kbuild: add an elfnote for whether vmlinux is built with lto ia64: syscalls: switch to generic syscallhdr.sh ia64: syscalls: switch to generic syscalltbl.sh alpha: syscalls: switch to generic syscallhdr.sh alpha: syscalls: switch to generic syscalltbl.sh sysctl: use min() helper for namecmp() kbuild: add support for zstd compressed modules kbuild: remove CONFIG_MODULE_COMPRESS kbuild: merge scripts/Makefile.modsign to scripts/Makefile.modinst kbuild: move module strip/compression code into scripts/Makefile.modinst kbuild: refactor scripts/Makefile.modinst kbuild: rename extmod-prefix to extmod_prefix kbuild: check module name conflict for external modules as well kbuild: show the target directory for depmod log ...	2021-04-29 14:24:39 -07:00
Linus Torvalds	9d31d23389	Networking changes for 5.13. ... Core: - bpf: - allow bpf programs calling kernel functions (initially to reuse TCP congestion control implementations) - enable task local storage for tracing programs - remove the need to store per-task state in hash maps, and allow tracing programs access to task local storage previously added for BPF_LSM - add bpf_for_each_map_elem() helper, allowing programs to walk all map elements in a more robust and easier to verify fashion - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT redirection - lpm: add support for batched ops in LPM trie - add BTF_KIND_FLOAT support - mostly to allow use of BTF on s390 which has floats in its headers files - improve BPF syscall documentation and extend the use of kdoc parsing scripts we already employ for bpf-helpers - libbpf, bpftool: support static linking of BPF ELF files - improve support for encapsulation of L2 packets - xdp: restructure redirect actions to avoid a runtime lookup, improving performance by 4-8% in microbenchmarks - xsk: build skb by page (aka generic zerocopy xmit) - improve performance of software AF_XDP path by 33% for devices which don't need headers in the linear skb part (e.g. virtio) - nexthop: resilient next-hop groups - improve path stability on next-hops group changes (incl. offload for mlxsw) - ipv6: segment routing: add support for IPv4 decapsulation - icmp: add support for RFC 8335 extended PROBE messages - inet: use bigger hash table for IP ID generation - tcp: deal better with delayed TX completions - make sure we don't give up on fast TCP retransmissions only because driver is slow in reporting that it completed transmitting the original - tcp: reorder tcp_congestion_ops for better cache locality - mptcp: - add sockopt support for common TCP options - add support for common TCP msg flags - include multiple address ids in RM_ADDR - add reset option support for resetting one subflow - udp: GRO L4 improvements - improve 'forward' / 'frag_list' co-existence with UDP tunnel GRO, allowing the first to take place correctly even for encapsulated UDP traffic - micro-optimize dev_gro_receive() and flow dissection, avoid retpoline overhead on VLAN and TEB GRO - use less memory for sysctls, add a new sysctl type, to allow using u8 instead of "int" and "long" and shrink networking sysctls - veth: allow GRO without XDP - this allows aggregating UDP packets before handing them off to routing, bridge, OvS, etc. - allow specifing ifindex when device is moved to another namespace - netfilter: - nft_socket: add support for cgroupsv2 - nftables: add catch-all set element - special element used to define a default action in case normal lookup missed - use net_generic infra in many modules to avoid allocating per-ns memory unnecessarily - xps: improve the xps handling to avoid potential out-of-bound accesses and use-after-free when XPS change race with other re-configuration under traffic - add a config knob to turn off per-cpu netdev refcnt to catch underflows in testing Device APIs: - add WWAN subsystem to organize the WWAN interfaces better and hopefully start driving towards more unified and vendor- -independent APIs - ethtool: - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt support) - allow network drivers to dump arbitrary SFP EEPROM data, current offset+length API was a poor fit for modern SFP which define EEPROM in terms of pages (incl. mlx5 support) - act_police, flow_offload: add support for packet-per-second policing (incl. offload for nfp) - psample: add additional metadata attributes like transit delay for packets sampled from switch HW (and corresponding egress and policy-based sampling in the mlxsw driver) - dsa: improve support for sandwiched LAGs with bridge and DSA - netfilter: - flowtable: use direct xmit in topologies with IP forwarding, bridging, vlans etc. - nftables: counter hardware offload support - Bluetooth: - improvements for firmware download w/ Intel devices - add support for reading AOSP vendor capabilities - add support for virtio transport driver - mac80211: - allow concurrent monitor iface and ethernet rx decap - set priority and queue mapping for injected frames - phy: add support for Clause-45 PHY Loopback - pci/iov: add sysfs MSI-X vector assignment interface to distribute MSI-X resources to VFs (incl. mlx5 support) New hardware/drivers: - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit interfaces. - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and BCM63xx switches - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches - ath11k: support for QCN9074 a 802.11ax device - Bluetooth: Broadcom BCM4330 and BMC4334 - phy: Marvell 88X2222 transceiver support - mdio: add BCM6368 MDIO mux bus controller - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips - mana: driver for Microsoft Azure Network Adapter (MANA) - Actions Semi Owl Ethernet MAC - can: driver for ETAS ES58X CAN/USB interfaces Pure driver changes: - add XDP support to: enetc, igc, stmmac - add AF_XDP support to: stmmac - virtio: - page_to_skb() use build_skb when there's sufficient tailroom (21% improvement for 1000B UDP frames) - support XDP even without dedicated Tx queues - share the Tx queues with the stack when necessary - mlx5: - flow rules: add support for mirroring with conntrack, matching on ICMP, GTP, flex filters and more - support packet sampling with flow offloads - persist uplink representor netdev across eswitch mode changes - allow coexistence of CQE compression and HW time-stamping - add ethtool extended link error state reporting - ice, iavf: support flow filters, UDP Segmentation Offload - dpaa2-switch: - move the driver out of staging - add spanning tree (STP) support - add rx copybreak support - add tc flower hardware offload on ingress traffic - ionic: - implement Rx page reuse - support HW PTP time-stamping - octeon: support TC hardware offloads - flower matching on ingress and egress ratelimitting. - stmmac: - add RX frame steering based on VLAN priority in tc flower - support frame preemption (FPE) - intel: add cross time-stamping freq difference adjustment - ocelot: - support forwarding of MRP frames in HW - support multiple bridges - support PTP Sync one-step timestamping - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like learning, flooding etc. - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350, SC7280 SoCs) - mt7601u: enable TDLS support - mt76: - add support for 802.3 rx frames (mt7915/mt7615) - mt7915 flash pre-calibration support - mt7921/mt7663 runtime power management fixes Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmCKFPIACgkQMUZtbf5S Irtw0g/+NA8bWdHNgG4H5rya0pv2z3IieLRmSdDfKRQQXcJpklawc5MKVVaTee/Q 5/QqgPdCsu1LAU6JXBKsKmyDDaMlQKdWuKbOqDSiAQKoMesZStTEHf9d851ZzgxA Cdb6O7BD3lBl/IN+oxNG+KcmD1LKquTPKGySq2mQtEdLO12ekAsranzmj4voKffd q9tBShpXQ7Dq77DLYfiQXVCvsizNcbbJFuxX0o9Lpb9+61ZyYAbogZSa9ypiZZwR I/9azRBtJg7UV1aD/cLuAfy66Qh7t63+rCxVazs5Os8jVO26P/jQdisnnOe/x+p9 wYEmKm3GSu0V4SAPxkWW+ooKusflCeqDoMIuooKt6kbP6BRj540veGw3Ww/m5YFr 7pLQkTSP/tSjuGQIdBE1LOP5LBO8DZeC8Kiop9V0fzAW9hFSZbEq25WW0bPj8QQO zA4Z7yWlslvxcfY2BdJX3wD8klaINkl/8fDWZFFsBdfFX2VeLtm7Xfduw34BJpvU rYT3oWr6PhtkPAKR32SUcemSfeWgIVU41eSshzRz3kez1NngBUuLlSGGSEaKbes5 pZVt6pYFFVByyf6MTHFEoQvafZfEw04JILZpo4R5V8iTHzom0kD3Py064sBiXEw2 B6t+OW4qgcxGblpFkK2lD4kR2s1TPUs0ckVO6sAy1x8q60KKKjY= =vcbA -----END PGP SIGNATURE----- Merge tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - bpf: - allow bpf programs calling kernel functions (initially to reuse TCP congestion control implementations) - enable task local storage for tracing programs - remove the need to store per-task state in hash maps, and allow tracing programs access to task local storage previously added for BPF_LSM - add bpf_for_each_map_elem() helper, allowing programs to walk all map elements in a more robust and easier to verify fashion - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT redirection - lpm: add support for batched ops in LPM trie - add BTF_KIND_FLOAT support - mostly to allow use of BTF on s390 which has floats in its headers files - improve BPF syscall documentation and extend the use of kdoc parsing scripts we already employ for bpf-helpers - libbpf, bpftool: support static linking of BPF ELF files - improve support for encapsulation of L2 packets - xdp: restructure redirect actions to avoid a runtime lookup, improving performance by 4-8% in microbenchmarks - xsk: build skb by page (aka generic zerocopy xmit) - improve performance of software AF_XDP path by 33% for devices which don't need headers in the linear skb part (e.g. virtio) - nexthop: resilient next-hop groups - improve path stability on next-hops group changes (incl. offload for mlxsw) - ipv6: segment routing: add support for IPv4 decapsulation - icmp: add support for RFC 8335 extended PROBE messages - inet: use bigger hash table for IP ID generation - tcp: deal better with delayed TX completions - make sure we don't give up on fast TCP retransmissions only because driver is slow in reporting that it completed transmitting the original - tcp: reorder tcp_congestion_ops for better cache locality - mptcp: - add sockopt support for common TCP options - add support for common TCP msg flags - include multiple address ids in RM_ADDR - add reset option support for resetting one subflow - udp: GRO L4 improvements - improve 'forward' / 'frag_list' co-existence with UDP tunnel GRO, allowing the first to take place correctly even for encapsulated UDP traffic - micro-optimize dev_gro_receive() and flow dissection, avoid retpoline overhead on VLAN and TEB GRO - use less memory for sysctls, add a new sysctl type, to allow using u8 instead of "int" and "long" and shrink networking sysctls - veth: allow GRO without XDP - this allows aggregating UDP packets before handing them off to routing, bridge, OvS, etc. - allow specifing ifindex when device is moved to another namespace - netfilter: - nft_socket: add support for cgroupsv2 - nftables: add catch-all set element - special element used to define a default action in case normal lookup missed - use net_generic infra in many modules to avoid allocating per-ns memory unnecessarily - xps: improve the xps handling to avoid potential out-of-bound accesses and use-after-free when XPS change race with other re-configuration under traffic - add a config knob to turn off per-cpu netdev refcnt to catch underflows in testing Device APIs: - add WWAN subsystem to organize the WWAN interfaces better and hopefully start driving towards more unified and vendor- independent APIs - ethtool: - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt support) - allow network drivers to dump arbitrary SFP EEPROM data, current offset+length API was a poor fit for modern SFP which define EEPROM in terms of pages (incl. mlx5 support) - act_police, flow_offload: add support for packet-per-second policing (incl. offload for nfp) - psample: add additional metadata attributes like transit delay for packets sampled from switch HW (and corresponding egress and policy-based sampling in the mlxsw driver) - dsa: improve support for sandwiched LAGs with bridge and DSA - netfilter: - flowtable: use direct xmit in topologies with IP forwarding, bridging, vlans etc. - nftables: counter hardware offload support - Bluetooth: - improvements for firmware download w/ Intel devices - add support for reading AOSP vendor capabilities - add support for virtio transport driver - mac80211: - allow concurrent monitor iface and ethernet rx decap - set priority and queue mapping for injected frames - phy: add support for Clause-45 PHY Loopback - pci/iov: add sysfs MSI-X vector assignment interface to distribute MSI-X resources to VFs (incl. mlx5 support) New hardware/drivers: - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit interfaces. - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and BCM63xx switches - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches - ath11k: support for QCN9074 a 802.11ax device - Bluetooth: Broadcom BCM4330 and BMC4334 - phy: Marvell 88X2222 transceiver support - mdio: add BCM6368 MDIO mux bus controller - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips - mana: driver for Microsoft Azure Network Adapter (MANA) - Actions Semi Owl Ethernet MAC - can: driver for ETAS ES58X CAN/USB interfaces Pure driver changes: - add XDP support to: enetc, igc, stmmac - add AF_XDP support to: stmmac - virtio: - page_to_skb() use build_skb when there's sufficient tailroom (21% improvement for 1000B UDP frames) - support XDP even without dedicated Tx queues - share the Tx queues with the stack when necessary - mlx5: - flow rules: add support for mirroring with conntrack, matching on ICMP, GTP, flex filters and more - support packet sampling with flow offloads - persist uplink representor netdev across eswitch mode changes - allow coexistence of CQE compression and HW time-stamping - add ethtool extended link error state reporting - ice, iavf: support flow filters, UDP Segmentation Offload - dpaa2-switch: - move the driver out of staging - add spanning tree (STP) support - add rx copybreak support - add tc flower hardware offload on ingress traffic - ionic: - implement Rx page reuse - support HW PTP time-stamping - octeon: support TC hardware offloads - flower matching on ingress and egress ratelimitting. - stmmac: - add RX frame steering based on VLAN priority in tc flower - support frame preemption (FPE) - intel: add cross time-stamping freq difference adjustment - ocelot: - support forwarding of MRP frames in HW - support multiple bridges - support PTP Sync one-step timestamping - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like learning, flooding etc. - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350, SC7280 SoCs) - mt7601u: enable TDLS support - mt76: - add support for 802.3 rx frames (mt7915/mt7615) - mt7915 flash pre-calibration support - mt7921/mt7663 runtime power management fixes" * tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2451 commits) net: selftest: fix build issue if INET is disabled net: netrom: nr_in: Remove redundant assignment to ns net: tun: Remove redundant assignment to ret net: phy: marvell: add downshift support for M88E1240 net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255 net/sched: act_ct: Remove redundant ct get and check icmp: standardize naming of RFC 8335 PROBE constants bpf, selftests: Update array map tests for per-cpu batched ops bpf: Add batched ops support for percpu array bpf: Implement formatted output helpers with bstr_printf seq_file: Add a seq_bprintf function sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues net:nfc:digital: Fix a double free in digital_tg_recv_dep_req net: fix a concurrency bug in l2tp_tunnel_register() net/smc: Remove redundant assignment to rc mpls: Remove redundant assignment to err llc2: Remove redundant assignment to rc net/tls: Remove redundant initialization of record rds: Remove redundant assignment to nr_sig dt-bindings: net: mdio-gpio: add compatible for microchip,mdio-smi0 ...	2021-04-29 11:57:23 -07:00
Linus Torvalds	635de956a7	The x86 MM changes in this cycle were: ... - Implement concurrent TLB flushes, which overlaps the local TLB flush with the remote TLB flush. In testing this improved sysbench performance measurably by a couple of percentage points, especially if TLB-heavy security mitigations are active. - Further micro-optimizations to improve the performance of TLB flushes. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCKbNcRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hjYBAAsyNUa/gOu0g6/Cx8R86w9HtHHmm5vso/ 6nJjWj2fd2qJ9JShlddxvXEMeXtPTYabVWQkiiriFMuofk6JeKnlHm1Jzl6keABX OQFwjIFeNASPRcdXvuuYPOVWAJJdr2oL9QUr6OOK1ccQJTz/Cd0zA+VQ5YqcsCon yaWbkxELwKXpgql+qt66eAZ6Q2Y1TKXyrTW7ZgxQi0yeeWqMaEOub0/oyS7Ax1Rg qEJMwm1prb76NPzeqR/G3e4KTrDZfQ/B/KnSsz36GTJpl4eye6XqWDUgm1nAGNIc 5dbc4Vx7JtZsUOuC0AmzWb3hsDyzVcN/lQvijdZ2RsYR3gvuYGaBhKqExqV0XH6P oqaWOKWCz+LqWbsgJmxCpqkt1LZl5+VUOcfJ97WkIS7DyIPtSHTzQXbBMZqKLeat mn5UcKYB2Gi7wsUPv6VC2ChKbDqN0VT8G86XbYylGo4BE46KoZKPUNY/QWKLUPd6 0UKcVeNM2HFyf1C73p/tO/z7hzu3qLuMMnsphP6/c2pKLpdgawEXgbnVKNId1B/c NrzyhTvVaMt+Um28bBRhHONIlzPJwWcnZbdY7NqMnu+LBKQ68cL/h4FOIV/RDLNb GJLgfAr8fIw/zIpqYuFHiiMNo9wWqVtZko1MvXhGceXUL69QuzTra2XR/6aDxkPf 6gQVesetTvo= =3Cyp -----END PGP SIGNATURE----- Merge tag 'x86-mm-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 tlb updates from Ingo Molnar: "The x86 MM changes in this cycle were: - Implement concurrent TLB flushes, which overlaps the local TLB flush with the remote TLB flush. In testing this improved sysbench performance measurably by a couple of percentage points, especially if TLB-heavy security mitigations are active. - Further micro-optimizations to improve the performance of TLB flushes" * tag 'x86-mm-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: smp: Micro-optimize smp_call_function_many_cond() smp: Inline on_each_cpu_cond() and on_each_cpu() x86/mm/tlb: Remove unnecessary uses of the inline keyword cpumask: Mark functions as pure x86/mm/tlb: Do not make is_lazy dirty for no reason x86/mm/tlb: Privatize cpu_tlbstate x86/mm/tlb: Flush remote and local TLBs concurrently x86/mm/tlb: Open-code on_each_cpu_cond_mask() for tlb_is_not_lazy() x86/mm/tlb: Unify flush_tlb_func_local() and flush_tlb_func_remote() smp: Run functions concurrently in smp_call_function_many_cond()	2021-04-29 11:41:43 -07:00
Linus Torvalds	3644286f6c	\n ... -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmCJUfIACgkQnJ2qBz9k QNkStAf8CA7beya7LZ/GGN7HzXhv2cs+IpUFhRkynLklEM0lxKsOEagLFSZxkoMD IBSRSo4odkkderqI9W/yp+9OYhOd9+BQCq4isg1Gh9Tf5xANJEpLvBAPnWVhooJs 9CrYZQY9Bdf+fF/8GHbKlrMAYm56vBCmWqyWTEtWUyPBOA12in2ZHQJmCa+5+nge zTT/B5cvuhN5K7uYhGM4YfeCU5DBmmvD4sV6YBTkQOgCU0bEF0f9R3JjHDo34a1s yqna3ypqKNRhsJVs8F+aOGRieUYxFoRqtYNHZK3qI9i07v7ndoTm5jzGN6OFlKs3 U3rF9/+cBgeESahWG6IjHIqhXGXNhg== =KjNm -----END PGP SIGNATURE----- Merge tag 'fsnotify_for_v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull fsnotify updates from Jan Kara: - support for limited fanotify functionality for unpriviledged users - faster merging of fanotify events - a few smaller fsnotify improvements * tag 'fsnotify_for_v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: shmem: allow reporting fanotify events with file handles on tmpfs fs: introduce a wrapper uuid_to_fsid() fanotify_user: use upper_32_bits() to verify mask fanotify: support limited functionality for unprivileged users fanotify: configurable limits via sysfs fanotify: limit number of event merge attempts fsnotify: use hash table for faster events merge fanotify: mix event info and pid into merge key hash fanotify: reduce event objectid to 29-bit hash fsnotify: allow fsnotify_{peek,remove}_first_event with empty queue	2021-04-29 11:06:13 -07:00
Linus Torvalds	767fcbc80f	\n ... -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmCJU1UACgkQnJ2qBz9k QNk62AgAgp05OIXU/AgObb7DvSyI3ycwCV8PeWBpwD8yoDAh5x0tmT7vnJu974p6 yHdnF7rr69ZzvbNCHLJ5kRykRlUao9W7cO5fdOW1uTpL7Ic60QuJMks/NfgVTHp1 2zIQmBDerfn1/LTK8r2pPGcvtcjRcr7Ep4beN0Duw57lfVMJhjsNRPnBbXGBcp0r QzKk4/8V3DCZvOw+XNC3nto7avjvf+nU9sJmuh83546eqh0atjWivvO5aAlDOe6W rhBiLlmP0in5u2n1fYqzI1OQvtgtleyEZT2G0CrbAZn0xjmV/if9wl+3K6TOwDvR 778xDEX7sZCaO/xkB+WK3hrd15ftKg== =0kYE -----END PGP SIGNATURE----- Merge tag 'for_v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull quota, ext2, reiserfs updates from Jan Kara: - support for path (instead of device) based quotactl syscall (quotactl_path(2)) - ext2 conversion to kmap_local() - other minor cleanups & fixes * tag 'for_v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fs/reiserfs/journal.c: delete useless variables fs/ext2: Replace kmap() with kmap_local_page() ext2: Match up ext2_put_page() with ext2_dotdot() and ext2_find_entry() fs/ext2/: fix misspellings using codespell tool quota: report warning limits for realtime space quotas quota: wire up quotactl_path quota: Add mountpath based quota support	2021-04-29 10:51:29 -07:00
Linus Torvalds	625434dafd	for-5.13/io_uring-2021-04-27 ... -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmCIRBUQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpjt5D/9de6zCaha6CyfIIPiU+crropQ2jPzO49cb WzcOCmdhSv0GtYlhdnIqCOo5p8mRDWJAEBU9upTDTCWOx9hwr5Ms0TCNQHxuQ/T0 4Ll+/cMsOxeTypiykfMtOG9TEmYSria2vTJKLgpyaP4ohfJa3uT7r2NZ8NK/8T4t wwbJ+jCSKewelI1l0XD8k8LBU39FS/KRgLTdfYj/rCW3PWt/ZE2eSIYjZQvMCVOC 3fIdgOOJAMQVQafz+YAeJd2E+/l5/8YcJVKpJMVtBNbqTHIjA4EsInZauy8TpBgW OzJ3I+XdF70qZM119tI/nXw3sb0e+UV0fRsIXLkOwTEBzowernrAtsEwAOP+qFKS 2YnqSKOSjMO5d5Mpkz6T0MDMloU45jph88lUH0RoShVxGa7jv+TMOL6QU1oOyxc1 +gPPbApQs9WtSZDHsTJ0xFLpol804UDQmwb38mHdzedDVSE7iip1jANkw6LEhKkJ Mlg60ZF1Z305G+cDhrbs02ZGVa+fzbrtXtLlTqZw8bNX9lBp0JLtDpzskjbnUmck 6A04nfg+Eto5GvAn+FRBuOCPridLEk2K6ygko/gwQWsYCgqkCgRuqjlIQCSZy5iu jHEFixIXKn6eACf+YzLVxSLyEQrmFyDSypbN7LvzoKJYo/loy8Q1+42nGlrVC3zi +CB1NokPng== =ZJ8L -----END PGP SIGNATURE----- Merge tag 'for-5.13/io_uring-2021-04-27' of git://git.kernel.dk/linux-block Pull io_uring updates from Jens Axboe: - Support for multi-shot mode for POLL requests - More efficient reference counting. This is shamelessly stolen from the mm side. Even though referencing is mostly single/dual user, the 128 count was retained to keep the code the same. Maybe this should/could be made generic at some point. - Removal of the need to have a manager thread for each ring. The manager threads only job was checking and creating new io-threads as needed, instead we handle this from the queue path. - Allow SQPOLL without CAP_SYS_ADMIN or CAP_SYS_NICE. Since 5.12, this thread is "just" a regular application thread, so no need to restrict use of it anymore. - Cleanup of how internal async poll data lifetime is managed. - Fix for syzbot reported crash on SQPOLL cancelation. - Make buffer registration more like file registrations, which includes flexibility in avoiding full set unregistration and re-registration. - Fix for io-wq affinity setting. - Be a bit more defensive in task->pf_io_worker setup. - Various SQPOLL fixes. - Cleanup of SQPOLL creds handling. - Improvements to in-flight request tracking. - File registration cleanups. - Tons of cleanups and little fixes * tag 'for-5.13/io_uring-2021-04-27' of git://git.kernel.dk/linux-block: (156 commits) io_uring: maintain drain logic for multishot poll requests io_uring: Check current->io_uring in io_uring_cancel_sqpoll io_uring: fix NULL reg-buffer io_uring: simplify SQPOLL cancellations io_uring: fix work_exit sqpoll cancellations io_uring: Fix uninitialized variable up.resv io_uring: fix invalid error check after malloc io_uring: io_sq_thread() no longer needs to reset current->pf_io_worker kernel: always initialize task->pf_io_worker to NULL io_uring: update sq_thread_idle after ctx deleted io_uring: add full-fledged dynamic buffers support io_uring: implement fixed buffers registration similar to fixed files io_uring: prepare fixed rw for dynanic buffers io_uring: keep table of pointers to ubufs io_uring: add generic rsrc update with tags io_uring: add IORING_REGISTER_RSRC io_uring: enumerate dynamic resources io_uring: add generic path for rsrc update io_uring: preparation for rsrc tagging io_uring: decouple CQE filling from requests ...	2021-04-28 14:56:09 -07:00
Linus Torvalds	16b3d0cf5b	Scheduler updates for this cycle are: ... - Clean up SCHED_DEBUG: move the decades old mess of sysctl, procfs and debugfs interfaces to a unified debugfs interface. - Signals: Allow caching one sigqueue object per task, to improve performance & latencies. - Improve newidle_balance() irq-off latencies on systems with a large number of CPU cgroups. - Improve energy-aware scheduling - Improve the PELT metrics for certain workloads - Reintroduce select_idle_smt() to improve load-balancing locality - but without the previous regressions - Add 'scheduler latency debugging': warn after long periods of pending need_resched. This is an opt-in feature that requires the enabling of the LATENCY_WARN scheduler feature, or the use of the resched_latency_warn_ms=xx boot parameter. - CPU hotplug fixes for HP-rollback, and for the 'fail' interface. Fix remaining balance_push() vs. hotplug holes/races - PSI fixes, plus allow /proc/pressure/ files to be written by CAP_SYS_RESOURCE tasks as well - Fix/improve various load-balancing corner cases vs. capacity margins - Fix sched topology on systems with NUMA diameter of 3 or above - Fix PF_KTHREAD vs to_kthread() race - Minor rseq optimizations - Misc cleanups, optimizations, fixes and smaller updates Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCJInsRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1i5XxAArh0b+fwXlkVGzTUly7HQjhU7lFbChnmF h6ToyNLi6pXoZ14VC/WoRIME+RzK3gmw9cEFaSLVPxbkbekTcyWS78kqmcg1/j2v kO/20QhXobiIxVskYfoMmqSavZ5mKhMWBqtFXkCuYfxwGylas0VVdh3AZLJ7N21G WEoFh99pVULwWnPHxM2ZQ87Ex9BkGKbsBTswxWpprCfXLqD0N2hHlABpwJP78zRf VniWFOcC7lslILCFawb7CqGgAwbgV85nDRS4QCuCKisrkFywvjJrEeu/W+h1NfhF d6ves/osNdEAM1DSALoxwEA42An8l8xh8NyJnl8JZV00LW0DM108O5/7pf5Zcryc RHV3RxA7skgezBh5uThvo60QzNK+kVMatI4qpQEHxLE52CaDl/fBu1Cgb/VUxnIl AEBfyiFbk+skHpuMFKtl30Tx3M+yJKMTzFPd4kYjHYGEDwtAcXcB3dJQW48A79i3 H3IWcDcXpk5Rjo2UZmaXdt/qlj7mP6U0xdOUq8ZK6JOC4uY9skszVGsfuNN9QQ5u 2E2YKKVrGFoQydl4C8R6A7axL2VzIJszHFZNipd8E3YOyW7PWRAkr02tOOkBTj8N dLMcNM7aPJWqEYiEIjEzGQN20pweJ1dRA29LDuOswKh+7W2bWTQFh6F2Q8Haansc RVg5PDzl+Mc= =E7mz -----END PGP SIGNATURE----- Merge tag 'sched-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: - Clean up SCHED_DEBUG: move the decades old mess of sysctl, procfs and debugfs interfaces to a unified debugfs interface. - Signals: Allow caching one sigqueue object per task, to improve performance & latencies. - Improve newidle_balance() irq-off latencies on systems with a large number of CPU cgroups. - Improve energy-aware scheduling - Improve the PELT metrics for certain workloads - Reintroduce select_idle_smt() to improve load-balancing locality - but without the previous regressions - Add 'scheduler latency debugging': warn after long periods of pending need_resched. This is an opt-in feature that requires the enabling of the LATENCY_WARN scheduler feature, or the use of the resched_latency_warn_ms=xx boot parameter. - CPU hotplug fixes for HP-rollback, and for the 'fail' interface. Fix remaining balance_push() vs. hotplug holes/races - PSI fixes, plus allow /proc/pressure/ files to be written by CAP_SYS_RESOURCE tasks as well - Fix/improve various load-balancing corner cases vs. capacity margins - Fix sched topology on systems with NUMA diameter of 3 or above - Fix PF_KTHREAD vs to_kthread() race - Minor rseq optimizations - Misc cleanups, optimizations, fixes and smaller updates * tag 'sched-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (61 commits) cpumask/hotplug: Fix cpu_dying() state tracking kthread: Fix PF_KTHREAD vs to_kthread() race sched/debug: Fix cgroup_path[] serialization sched,psi: Handle potential task count underflow bugs more gracefully sched: Warn on long periods of pending need_resched sched/fair: Move update_nohz_stats() to the CONFIG_NO_HZ_COMMON block to simplify the code & fix an unused function warning sched/debug: Rename the sched_debug parameter to sched_verbose sched,fair: Alternative sched_slice() sched: Move /proc/sched_debug to debugfs sched,debug: Convert sysctl sched_domains to debugfs debugfs: Implement debugfs_create_str() sched,preempt: Move preempt_dynamic to debug.c sched: Move SCHED_DEBUG sysctl to debugfs sched: Don't make LATENCYTOP select SCHED_DEBUG sched: Remove sched_schedstats sysctl out from under SCHED_DEBUG sched/numa: Allow runtime enabling/disabling of NUMA balance without SCHED_DEBUG sched: Use cpu_dying() to fix balance_push vs hotplug-rollback cpumask: Introduce DYING mask cpumask: Make cpu_{online,possible,present,active}() inline rseq: Optimise rseq_get_rseq_cs() and clear_rseq_cs() ...	2021-04-28 13:33:57 -07:00
Linus Torvalds	42dec9a936	Perf events changes in this cycle were: ... - Improve Intel uncore PMU support: - Parse uncore 'discovery tables' - a new hardware capability enumeration method introduced on the latest Intel platforms. This table is in a well-defined PCI namespace location and is read via MMIO. It is organized in an rbtree. These uncore tables will allow the discovery of standard counter blocks, but fancier counters still need to be enumerated explicitly. - Add Alder Lake support - Improve IIO stacks to PMON mapping support on Skylake servers - Add Intel Alder Lake PMU support - which requires the introduction of 'hybrid' CPUs and PMUs. Alder Lake is a mix of Golden Cove ('big') and Gracemont ('small' - Atom derived) cores. The CPU-side feature set is entirely symmetrical - but on the PMU side there's core type dependent PMU functionality. - Reduce data loss with CPU level hardware tracing on Intel PT / AUX profiling, by fixing the AUX allocation watermark logic. - Improve ring buffer allocation on NUMA systems - Put 'struct perf_event' into their separate kmem_cache pool - Add support for synchronous signals for select perf events. The immediate motivation is to support low-overhead sampling-based race detection for user-space code. The feature consists of the following main changes: - Add thread-only event inheritance via perf_event_attr::inherit_thread, which limits inheritance of events to CLONE_THREAD. - Add the ability for events to not leak through exec(), via perf_event_attr::remove_on_exec. - Allow the generation of SIGTRAP via perf_event_attr::sigtrap, extend siginfo with an u64 ::si_perf, and add the breakpoint information to ::si_addr and ::si_perf if the event is PERF_TYPE_BREAKPOINT. The siginfo support is adequate for breakpoints right now - but the new field can be used to introduce support for other types of metadata passed over siginfo as well. - Misc fixes, cleanups and smaller updates. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCJGpERHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1j9zBAAuVbG2snV6SBSdXLhQcM66N3NckOXvSY5 QjjhQcuwJQEK/NJB3266K5d8qSmdyRBsWf3GCsrmyBT67P1V28K44Pu7oCV0UDtf mpVRjEP0oR7hNsANSSgo8Fa4ZD7H5waX7dK7925Tvw8By3mMoZoddiD/84WJHhxO NDF+GRFaRj+/dpbhV8cdCoXTjYdkC36vYuZs3b9lu0tS9D/AJgsNy7TinLvO02Cs 5peP+2y29dgvCXiGBiuJtEA6JyGnX3nUJCvfOZZ/DWDc3fdduARlRrc5Aiq4n/wY UdSkw1VTZBlZ1wMSdmHQVeC5RIH3uWUtRoNqy0Yc90lBm55AQ0EENwIfWDUDC5zy USdBqWTNWKMBxlEilUIyqKPQK8LW/31TRzqy8BWKPNcZt5yP5YS1SjAJRDDjSwL/ I+OBw1vjLJamYh8oNiD5b+VLqNQba81jFASfv+HVWcULumnY6ImECCpkg289Fkpi BVR065boifJDlyENXFbvTxyMBXQsZfA+EhtxG7ju2Ni+TokBbogyCb3L2injPt9g 7jjtTOqmfad4gX1WSc+215iYZMkgECcUd9E+BfOseEjBohqlo7yNKIfYnT8mE/Xq nb7eHjyvLiE8tRtZ+7SjsujOMHv9LhWFAbSaxU/kEVzpkp0zyd6mnnslDKaaHLhz goUMOL/D0lg= =NhQ7 -----END PGP SIGNATURE----- Merge tag 'perf-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf event updates from Ingo Molnar: - Improve Intel uncore PMU support: - Parse uncore 'discovery tables' - a new hardware capability enumeration method introduced on the latest Intel platforms. This table is in a well-defined PCI namespace location and is read via MMIO. It is organized in an rbtree. These uncore tables will allow the discovery of standard counter blocks, but fancier counters still need to be enumerated explicitly. - Add Alder Lake support - Improve IIO stacks to PMON mapping support on Skylake servers - Add Intel Alder Lake PMU support - which requires the introduction of 'hybrid' CPUs and PMUs. Alder Lake is a mix of Golden Cove ('big') and Gracemont ('small' - Atom derived) cores. The CPU-side feature set is entirely symmetrical - but on the PMU side there's core type dependent PMU functionality. - Reduce data loss with CPU level hardware tracing on Intel PT / AUX profiling, by fixing the AUX allocation watermark logic. - Improve ring buffer allocation on NUMA systems - Put 'struct perf_event' into their separate kmem_cache pool - Add support for synchronous signals for select perf events. The immediate motivation is to support low-overhead sampling-based race detection for user-space code. The feature consists of the following main changes: - Add thread-only event inheritance via perf_event_attr::inherit_thread, which limits inheritance of events to CLONE_THREAD. - Add the ability for events to not leak through exec(), via perf_event_attr::remove_on_exec. - Allow the generation of SIGTRAP via perf_event_attr::sigtrap, extend siginfo with an u64 ::si_perf, and add the breakpoint information to ::si_addr and ::si_perf if the event is PERF_TYPE_BREAKPOINT. The siginfo support is adequate for breakpoints right now - but the new field can be used to introduce support for other types of metadata passed over siginfo as well. - Misc fixes, cleanups and smaller updates. * tag 'perf-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits) signal, perf: Add missing TRAP_PERF case in siginfo_layout() signal, perf: Fix siginfo_t by avoiding u64 on 32-bit architectures perf/x86: Allow for 8<num_fixed_counters<16 perf/x86/rapl: Add support for Intel Alder Lake perf/x86/cstate: Add Alder Lake CPU support perf/x86/msr: Add Alder Lake CPU support perf/x86/intel/uncore: Add Alder Lake support perf: Extend PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE perf/x86/intel: Add Alder Lake Hybrid support perf/x86: Support filter_match callback perf/x86/intel: Add attr_update for Hybrid PMUs perf/x86: Add structures for the attributes of Hybrid PMUs perf/x86: Register hybrid PMUs perf/x86: Factor out x86_pmu_show_pmu_cap perf/x86: Remove temporary pmu assignment in event_init perf/x86/intel: Factor out intel_pmu_check_extra_regs perf/x86/intel: Factor out intel_pmu_check_event_constraints perf/x86/intel: Factor out intel_pmu_check_num_counters perf/x86: Hybrid PMU support for extra_regs perf/x86: Hybrid PMU support for event constraints ...	2021-04-28 13:03:44 -07:00
Linus Torvalds	0ff0edb550	Locking changes for this cycle were: ... - rtmutex cleanup & spring cleaning pass that removes ~400 lines of code - Futex simplifications & cleanups - Add debugging to the CSD code, to help track down a tenacious race (or hw problem) - Add lockdep_assert_not_held(), to allow code to require a lock to not be held, and propagate this into the ath10k driver - Misc LKMM documentation updates - Misc KCSAN updates: cleanups & documentation updates - Misc fixes and cleanups - Fix locktorture bugs with ww_mutexes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCJDn0RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hPrRAAryS4zPnuDsfkVk0smxo7a0lK5ljbH2Xo 28QUZXOl6upnEV8dzbjwG7eAjt5ZJVI5tKIeG0PV0NUJH2nsyHwESdtULGGYuPf/ 4YUzNwZJa+nI/jeBnVsXCimLVxxnNCRdR7yOVOHm4ukEwa+YTNt1pvlYRmUd4YyH Q5cCrpb3THvLka3AAamEbqnHnAdGxHKuuHYVRkODpMQ+zrQvtN8antYsuk8kJsqM m+GZg/dVCuLEPah5k+lOACtcq/w7HCmTlxS8t4XLvD52jywFZLcCPvi1rk0+JR+k Vd9TngC09GJ4jXuDpr42YKkU9/X6qy2Es39iA/ozCvc1Alrhspx/59XmaVSuWQGo XYuEPx38Yuo/6w16haSgp0k4WSay15A4uhCTQ75VF4vli8Bqgg9PaxLyQH1uG8e2 xk8U90R7bDzLlhKYIx1Vu5Z0t7A1JtB5CJtgpcfg/zQLlzygo75fHzdAiU5fDBDm 3QQXSU2Oqzt7c5ZypioHWazARk7tL6th38KGN1gZDTm5zwifpaCtHi7sml6hhZ/4 ATH6zEPzIbXJL2UqumSli6H4ye5ORNjOu32r7YPqLI4IDbzpssfoSwfKYlQG4Tvn 4H1Ukirzni0gz5+wbleItzf2aeo1rocs4YQTnaT02j8NmUHUz4AzOHGOQFr5Tvh0 wk/P4MIoSb0= =cOOk -----END PGP SIGNATURE----- Merge tag 'locking-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: - rtmutex cleanup & spring cleaning pass that removes ~400 lines of code - Futex simplifications & cleanups - Add debugging to the CSD code, to help track down a tenacious race (or hw problem) - Add lockdep_assert_not_held(), to allow code to require a lock to not be held, and propagate this into the ath10k driver - Misc LKMM documentation updates - Misc KCSAN updates: cleanups & documentation updates - Misc fixes and cleanups - Fix locktorture bugs with ww_mutexes * tag 'locking-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) kcsan: Fix printk format string static_call: Relax static_call_update() function argument type static_call: Fix unused variable warn w/o MODULE locking/rtmutex: Clean up signal handling in __rt_mutex_slowlock() locking/rtmutex: Restrict the trylock WARN_ON() to debug locking/rtmutex: Fix misleading comment in rt_mutex_postunlock() locking/rtmutex: Consolidate the fast/slowpath invocation locking/rtmutex: Make text section and inlining consistent locking/rtmutex: Move debug functions as inlines into common header locking/rtmutex: Decrapify __rt_mutex_init() locking/rtmutex: Remove pointless CONFIG_RT_MUTEXES=n stubs locking/rtmutex: Inline chainwalk depth check locking/rtmutex: Move rt_mutex_debug_task_free() to rtmutex.c locking/rtmutex: Remove empty and unused debug stubs locking/rtmutex: Consolidate rt_mutex_init() locking/rtmutex: Remove output from deadlock detector locking/rtmutex: Remove rtmutex deadlock tester leftovers locking/rtmutex: Remove rt_mutex_timed_lock() MAINTAINERS: Add myself as futex reviewer locking/mutex: Remove repeated declaration ...	2021-04-28 12:37:53 -07:00
Linus Torvalds	9a45da9270	RCU changes for this cycle were: ... - Bitmap support for "N" as alias for last bit - kvfree_rcu updates - mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.) - RCU callback offloading update - Polling RCU grace-period interfaces - Realtime-related RCU updates - Tasks-RCU updates - Torture-test updates - Torture-test scripting updates - Miscellaneous fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmCJCZERHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hRjw/+Jkb9KvR9odPt/zqN/KPtIlburCUWgsFb 2zAlWN4uMocPAiXT2Xq58/8gqMkpyn7ZVZtL1tD8fZSvlwEr0U8Z74+/NdoQvYE+ kMXIYIuhIAGRyAupmzkriqN33iY+BSZPacX3u6ziPj57/0OZzbWVN/DAhbuvyLqG J/oL4PHCa7XAqXbf95rd5Zjs680QJ3CbTRh4nA8uHArzJmKZOaaHJ05Pxd1LpULe SJ+5p1GQnnwxd1HqmlHMDu/dW+2hE35BGykF8zi78je9OJXualDoM/6JpIYGhMNY 5qlhU55QYP1jzjuNGVZZUS4L77eS2/W7SpPAaTmMEy/SsVB59G8Kf22oNDpVaEqQ m+2ErqwaHvlkMjqnsx+JQbsOP0yCi2NZBoEPFdfk1H23E2deVlSDbxPso4Zb1oUD E12769kN+SWDytuLSOAe1PY/KXqmNUKjPZl1GDCGXL7HlCnWyggUDschTsKJa19O XXl+yCTGMUH4XAPSqavAKQbBjurqpT6i4zfooSH4TBtOHm1ExgZOUS8gglZ1JuJd q+uJdZIgS8BcGkGw/k1bYDWY5TA4Rjv3sAOKQL1PgYBl1t/yLK441mE7LI9gWOwz Crz7vlSxD6Jc2cYQeUVW0KPGt5aVd63Gd9HjpXxGkqYQSDRqYMCebHEAGagz+jj7 Nv/nOnf34Uc= =mpNt -----END PGP SIGNATURE----- Merge tag 'core-rcu-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: - Support for "N" as alias for last bit in bitmap parsing library (eg using syntax like "nohz_full=2-N") - kvfree_rcu updates - mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.) - RCU callback offloading update - Polling RCU grace-period interfaces - Realtime-related RCU updates - Tasks-RCU updates - Torture-test updates - Torture-test scripting updates - Miscellaneous fixes * tag 'core-rcu-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (77 commits) rcutorture: Test start_poll_synchronize_rcu() and poll_state_synchronize_rcu() rcu: Provide polling interfaces for Tiny RCU grace periods torture: Fix kvm.sh --datestamp regex check torture: Consolidate qemu-cmd duration editing into kvm-transform.sh torture: Print proper vmlinux path for kvm-again.sh runs torture: Make TORTURE_TRUST_MAKE available in kvm-again.sh environment torture: Make kvm-transform.sh update jitter commands torture: Add --duration argument to kvm-again.sh torture: Add kvm-again.sh to rerun a previous torture-test torture: Create a "batches" file for build reuse torture: De-capitalize TORTURE_SUITE torture: Make upper-case-only no-dot no-slash scenario names official torture: Rename SRCU-t and SRCU-u to avoid lowercase characters torture: Remove no-mpstat error message torture: Record kvm-test-1-run.sh and kvm-test-1-run-qemu.sh PIDs torture: Record jitter start/stop commands torture: Extract kvm-test-1-run-qemu.sh from kvm-test-1-run.sh torture: Record TORTURE_KCONFIG_GDB_ARG in qemu-cmd torture: Abstract jitter.sh start/stop into scripts rcu: Provide polling interfaces for Tree RCU grace periods ...	2021-04-28 12:00:13 -07:00
Linus Torvalds	55e6be657b	Merge branch 'for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup ... Pull cgroup changes from Tejun Heo: "The only notable change is Vipin's new misc cgroup controller. This implements generic support for resources which can be controlled by simply counting and limiting the number of resource instances - ie there's X number of these on the system and this cgroup subtree can have upto Y of those. The first user is the address space IDs used for virtual machine memory encryption and expected future usages are similar - niche hardware features with concrete resource limits and simple usage models" * 'for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: use tsk->in_iowait instead of delayacct_is_task_waiting_on_io() cgroup/cpuset: fix typos in comments cgroup: misc: mark dummy misc_cg_res_total_usage() static inline svm/sev: Register SEV and SEV-ES ASIDs to the misc controller cgroup: Miscellaneous cgroup documentation. cgroup: Add misc cgroup controller	2021-04-27 18:47:42 -07:00
Linus Torvalds	eb6bbacc46	Livepatching changes for 5.13 ... -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmCIF5EACgkQUqAMR0iA lPIABA/+MstVI15QFRD50xo/TyGUP3r7NZmU7BTbhzshSW2XkXFiWNn73VeULhZ8 CDXf8bKuD2tIQTq30+RMRqmSUSN00mXepupA1eVeyKoUYqXzNsEU6oQBRQ3wKYQY HrvbcJtIMNC10G7TUIgltiqKsi5538YIfWn5EBN9wvxyHvnJQ/RzNS1OBIaDx+vV 04E/65P+gcrNMBRXB03/Vl2KBfJQKb4Hj78Yo9puq6kJmV3uHmHgv2adYGT/veG/ 2o+cigfJS1uLg6vCiJC9bBkQgNJUj/3p+6EaVBFfgpZ1ddKW9AVEQMv2PDvaWCuR BKwuawobHl1eHgCPS+dofZMFZ0LT+z0pnf8jpduLmbcKFbHYaWLwmPjwFwSQNJ6e zqM91pnwRUkSVXmboxubcNHbioRFXhvIiswxHHbrzS4BBs3mXfSEnMRlbB75iKuJ cazVRP6u+ukg7XZhtsL2/8UYXOJ4bbIF7R9B/DM5o4zJD2gs9fRCkfDrp2n0Twtu x7NffZAAmlqBQ+7c9d/eEkZmzpkX76gRwUC/IvwJRIs+jOHfEehe+tPuqDlWN19b vM0a+kup0n8T/ZCfLeK8PLayjm8/hnNg2CK970zlovEKAdCIMovJHUJjnXboSx/n +4R/DH3LUG3TJo+rMKLCOZt9/ph2YC1ySTmOXv9GkE0VlsCn95c= =ZMd+ -----END PGP SIGNATURE----- Merge tag 'livepatching-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching Pull livepatching update from Petr Mladek: - Use TIF_NOTIFY_SIGNAL infrastructure instead of the fake signal * tag 'livepatching-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching: livepatch: Replace the fake signal sending with TIF_NOTIFY_SIGNAL infrastructure	2021-04-27 18:14:38 -07:00
Linus Torvalds	7f3d08b255	printk changes for 5.13 ... -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmCIBMIACgkQUqAMR0iA lPIt9w//bbHUN/JsNtLCs/849oExdUn/thVajrD5yELttYZXhdzbXncNdkGX9tlU 4JmExmUoqKYdN6JhSnrcYvckHj7XXZM7pVh9IdzqRh10MEXIQ+7IUHjQc8034Zs/ W4/oZmfMtBjszap+cJ9hvdp9qaJkPz/fRLGlrbjc1K4hhxDa1gGmeD35SKswGltm q6RzX3uRl5JbBrYsLoqb28MGYRHhjf2+Pvndoj+5Nn9FtwPSot6jAkyqY5Y6iJlS W2EsFqOt+Kv7/I93FyQlnXC6Nx7vntmow7knmmGPXDf2BqLb0J8Bxl3fwuzpQoao nZzL/p9GQ4ZXF6y8gRV8+RzPIcftBdayOswEDGH0LzlTkbAe/9Sq9Lo7a4Z8jxHW ro0P+PSRK5Ksm7jvpVmSTg+Nt+XqDA5zA1lAorX1UjsyeDDNF9ndQ4C+ZNhCKo54 y+RDgtAArJMIvsHLQ53ReoOct5NnGVNb8G/r3bIAu+Dn6K3nesr6fP1XG8iduseL yFlLB7w214BQMr2B/C+8lQvj54wWE4lea2+LNvObxC5b8puYj0fEniUxTYP6bcB5 QT+LfTToufYz4US7ggJy6hoEfohifGWVvDHbn9tXmyXotSTHH7pHdYypqY+UO+kl 7BkwzNFCm4qCIKsg8nyJxT2hDOlpcCrQx1dBIjveMqJ0c5+ahXU= =ovSn -----END PGP SIGNATURE----- Merge tag 'printk-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk updates from Petr Mladek: - Stop synchronizing kernel log buffer readers by logbuf_lock. As a result, the access to the buffer is fully lockless now. Note that printk() itself still uses locks because it tries to flush the messages to the console immediately. Also the per-CPU temporary buffers are still there because they prevent infinite recursion and serialize backtraces from NMI. All this is going to change in the future. - kmsg_dump API rework and cleanup as a side effect of the logbuf_lock removal. - Make bstr_printf() aware that %pf and %pF formats could deference the given pointer. - Show also page flags by %pGp format. - Clarify the documentation for plain pointer printing. - Do not show no_hash_pointers warning multiple times. - Update Senozhatsky email address. - Some clean up. * tag 'printk-for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (24 commits) lib/vsprintf.c: remove leftover 'f' and 'F' cases from bstr_printf() printk: clarify the documentation for plain pointer printing kernel/printk.c: Fixed mundane typos printk: rename vprintk_func to vprintk vsprintf: dump full information of page flags in pGp mm, slub: don't combine pr_err with INFO mm, slub: use pGp to print page flags MAINTAINERS: update Senozhatsky email address lib/vsprintf: do not show no_hash_pointers message multiple times printk: console: remove unnecessary safe buffer usage printk: kmsg_dump: remove _nolock() variants printk: remove logbuf_lock printk: introduce a kmsg_dump iterator printk: kmsg_dumper: remove @active field printk: add syslog_lock printk: use atomic64_t for devkmsg_user.seq printk: use seqcount_latch for clear_seq printk: introduce CONSOLE_LOG_MAX printk: consolidate kmsg_dump_get_buffer/syslog_print_all code printk: refactor kmsg_dump_get_buffer() ...	2021-04-27 18:09:44 -07:00
Linus Torvalds	916a75965e	kgdb patches for 5.13 ... Exclusively tidy ups this cycle. Most of them are thanks to Sumit Garg and, as it happens, the clean ups do result in a slight increase in the line count. This is due to registering kdb commands using data structures rather than function calls which, in turn, simplifies the memory management during command registration. In addition to changes to command registration we also have some dead code removal, a clearer implementation of environment variable handling and a typo fix. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEELzVBU1D3lWq6cKzwfOMlXTn3iKEFAmCIEcIACgkQfOMlXTn3 iKHaWRAApW5fVDvM4ACAYYzqnq+ID2wW5h9XHpbyFqeaErQQEwjIcQHKMnHGMQ7J 2Smb8r9hmk93HgetUAYUe1xoU1/UgiVUlLxZDmtWw8Kf/e9unRcFAa6nUUxeFDn9 J3s1ZLAGOyjxThRKqOhgoQLE0c+tby7QaiEFF1O/iHTxWIn/euSTRbENoF40xDXU oheEfysWF9TpRo/96ZO14tbBHj6THrjyKkHFzYyjRs29wc/j/ofLg9OJj4tzuMne XecT7npDJ1JFoyZfkvxxK8TW/a2MLaH1EVO3EpiBM6tMSlHW3NRCehXXlJ6JyGY0 wAYwd5hgldXcVL8kmDXIC8qhuhGf7mCaU/8AmWyISj+lQcmcNfZYivJmZjdEW3qT yFkZ3k/r18N7/tRPbvOarlhxNHx+eCaFGm5ffz9VmMHMp1nrTk1lGhK63gTel3B0 ndIbvpN4ujWpes5lDg2knvZpaRIClSvisn/UyuuzZyWmeTT/kdUVHruSmopUFw9m BEWvAh0HwlR9dRhB8UKUyFF7w5fMXXw0+9j5HOw7gOR78QoNUZymBsxsISWp9fOO +Pzz3B9+TQdt9aZP1frMgDvNf6HDebxDZnmgCh5uMoLiKXAqJtJYdmLCOiTjtg35 FG44QhZFFlyDQdmPFf3hY+hGf2YxNdk+zdlyYq/amFjm5N3jGUM= =2I9J -----END PGP SIGNATURE----- Merge tag 'kgdb-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux Pull kgdb updates from Daniel Thompson: "Exclusively tidy ups this cycle. Most of them are thanks to Sumit Garg and, as it happens, the clean ups do result in a slight increase in the line count. This is due to registering kdb commands using data structures rather than function calls which, in turn, simplifies the memory management during command registration. In addition to changes to command registration we also have some dead code removal, a clearer implementation of environment variable handling and a typo fix" * tag 'kgdb-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux: kdb: Refactor env variables get/set code kernel: debug: Ordinary typo fixes in the file gdbstub.c kdb: Simplify kdb commands registration kdb: Remove redundant function definitions/prototypes	2021-04-27 18:07:19 -07:00
Pedro Tammela	f008d732ab	bpf: Add batched ops support for percpu array ... Uses the already in-place infrastructure provided by the 'generic_map_*_batch' functions. No tweak was needed as it transparently handles the percpu variant. As arrays don't have delete operations, let it return a error to user space (default behaviour). Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210424214510.806627-2-pctammela@mojatatu.com	2021-04-28 01:17:45 +02:00
Florent Revest	48cac3f4a9	bpf: Implement formatted output helpers with bstr_printf ... BPF has three formatted output helpers: bpf_trace_printk, bpf_seq_printf and bpf_snprintf. Their signatures specify that all arguments are provided from the BPF world as u64s (in an array or as registers). All of these helpers are currently implemented by calling functions such as snprintf() whose signatures take a variable number of arguments, then placed in a va_list by the compiler to call vsnprintf(). "d9c9e4db bpf: Factorize bpf_trace_printk and bpf_seq_printf" introduced a bpf_printf_prepare function that fills an array of u64 sanitized arguments with an array of "modifiers" which indicate what the "real" size of each argument should be (given by the format specifier). The BPF_CAST_FMT_ARG macro consumes these arrays and casts each argument to its real size. However, the C promotion rules implicitely cast them all back to u64s. Therefore, the arguments given to snprintf are u64s and the va_list constructed by the compiler will use 64 bits for each argument. On 64 bit machines, this happens to work well because 32 bit arguments in va_lists need to occupy 64 bits anyway, but on 32 bit architectures this breaks the layout of the va_list expected by the called function and mangles values. In "88a5c690b6 bpf: fix bpf_trace_printk on 32 bit archs", this problem had been solved for bpf_trace_printk only with a "horrid workaround" that emitted multiple calls to trace_printk where each call had different argument types and generated different va_list layouts. One of the call would be dynamically chosen at runtime. This was ok with the 3 arguments that bpf_trace_printk takes but bpf_seq_printf and bpf_snprintf accept up to 12 arguments. Because this approach scales code exponentially, it is not a viable option anymore. Because the promotion rules are part of the language and because the construction of a va_list is an arch-specific ABI, it's best to just avoid variadic arguments and va_lists altogether. Thankfully the kernel's snprintf() has an alternative in the form of bstr_printf() that accepts arguments in a "binary buffer representation". These binary buffers are currently created by vbin_printf and used in the tracing subsystem to split the cost of printing into two parts: a fast one that only dereferences and remembers values, and a slower one, called later, that does the pretty-printing. This patch refactors bpf_printf_prepare to construct binary buffers of arguments consumable by bstr_printf() instead of arrays of arguments and modifiers. This gets rid of BPF_CAST_FMT_ARG and greatly simplifies the bpf_printf_prepare usage but there are a few gotchas that change how bpf_printf_prepare needs to do things. Currently, bpf_printf_prepare uses a per cpu temporary buffer as a generic storage for strings and IP addresses. With this refactoring, the temporary buffers now holds all the arguments in a structured binary format. To comply with the format expected by bstr_printf, certain format specifiers also need to be pre-formatted: %pB and %pi6/%pi4/%pI4/%pI6. Because vsnprintf subroutines for these specifiers are hard to expose, we pre-format these arguments with calls to snprintf(). Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210427174313.860948-3-revest@chromium.org	2021-04-27 15:56:31 -07:00
Linus Torvalds	e359bce39d	audit/stable-5.13 PR 20210426 ... -----BEGIN PGP SIGNATURE----- iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmCHM4YUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXOncA/+OnDdkYFD2e/6PsHURsQ9XK3Yk0kc 1PY7lJnT4Eb4cUeMe2DP9LpTkA0ldhCxxbz8HYJNn7TUADqeCGhkShBLs/Fxz6k0 F63RLupJFU0NKhBOYOyccqwmkzc19Ortcj27mYrIgYGK+tSPuRHzJ25PGmjnvh1W U7Or0sb1aOegxqFkTXi9IP2wY2Dv+YWfWkSdZNi/W5z4bedCQr9fJgGyUvsDCJyY YBIRa/VOLoU9AGkS/XN+uM06lckImC5gqZAqRtJEAk4vj7MsxcWp/eNkENiyaPeH +vSUrsv1bj0Bv85CMY8SWGY/GDaiDKjEf+3fVMHF5B/Ft3CgCheykbGPyjRqt3eT iIkv0PR5f2MclV5WB5n3gxwE42rPV+FOE8Mh8vRiDdkub/T8r0/cK0FJYPuwYWyA r/wdNKQpQUky+laMQWXKpi4tDx6JSWZPBPLG0I8Za/m1CV964VVok68VIMSmBcFj sbzYD6e3z9VTnuuxvLiS5HqFTtKkN5VG2al3HmBvZFtkF60xeNs4zbgHV4dg7adK clcBE3X4j0RHmYwLs4WWdOzWMPgx99BFJxVgZw3YGXv4oXguLUDFAswTIrc5FNtf YYs0/zsPn6CLt15Q7m/3Ec1T0fDf0A+DW3V3KSRNvLaMB41+E1XIWPYpUbfrr13v zGfT3CIdu9IR36Q= =SzqM -----END PGP SIGNATURE----- Merge tag 'audit-pr-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit Pull audit updates from Paul Moore: "Another small pull request for audit, most of the patches are documentation updates with only two real code changes: one to fix a compiler warning for a dummy function/macro, and one to cleanup some code since we removed the AUDIT_FILTER_ENTRY ages ago (v4.17)" * tag 'audit-pr-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: audit: drop /proc/PID/loginuid documentation Format field audit: avoid -Wempty-body warning audit: document /proc/PID/sessionid audit: document /proc/PID/loginuid MAINTAINERS: update audit files audit: further cleanup of AUDIT_FILTER_ENTRY deprecation	2021-04-27 13:50:58 -07:00
Linus Torvalds	f1c921fb70	selinux/stable-5.13 PR 20210426 ... -----BEGIN PGP SIGNATURE----- iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmCHM2sUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXNfCg/9GmoCyCh+ZRj5RGQ6M+yJas1+yyJQ uEfTNde54yfATUTaaWYnZG59yqzM3I2uaV11U7tqg8ajiFPxJKqbs5R9jl3lnSjH 0Dg22nXPSCOTKcU0x/DeLoKRr+M9jO1K/nQ8NEZvYX4nC/OgtCvJqb/oEQZIKAk5 2a7OEmNNQyFGd274p9dELaDHxN9UIaJ2PzQFXtq7ROHgBXQO4ONb2ajOf6mDSFQb vP/CDHwaH+pcE28w44oRy0/YBkO1SrdqoFQchg5yFagM5tQRLGkXK4OFSs5KHi5Q YMtmaOzMPIv1e5eaC1HuuMJYA4pPb30T9hFHP7tmBVZfmZaFaDeUs+BhMm98WTiS o0iTP7tfs36/poOR1Q0/sB06uvF9hUAAX1ZuE95YySifbXU9hsUc9b0uQSwCdg9P /J9rcdHLTpWqjw9n02mezWmAvo5U8ZvbDs+0xPIwI+3RTUP5t6mp+Hd5Tc7bPTq1 0rpWXx+FQoSytFap5qiUSiwBp+HF6HQnNIXB0Muf6wctChoTjvo7TwoxH//z4kEm +SddhOCNkB7VC/X7hOxhl0F/rdHuXvb1AFIWjpTLJH2CR1PvMtF+sGey+uPT6hKZ /gvhmQGjFdph99eGlfVbCNvx1pM61O25IscaYD1T2wGImw+z7dX4WkG3WoOdDSkR bRjrBkcHh0gLhWk= =HTEy -----END PGP SIGNATURE----- Merge tag 'selinux-pr-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux Pull selinux updates from Paul Moore: - Add support for measuring the SELinux state and policy capabilities using IMA. - A handful of SELinux/NFS patches to compare the SELinux state of one mount with a set of mount options. Olga goes into more detail in the patch descriptions, but this is important as it allows more flexibility when using NFS and SELinux context mounts. - Properly differentiate between the subjective and objective LSM credentials; including support for the SELinux and Smack. My clumsy attempt at a proper fix for AppArmor didn't quite pass muster so John is working on a proper AppArmor patch, in the meantime this set of patches shouldn't change the behavior of AppArmor in any way. This change explains the bulk of the diffstat beyond security/. - Fix a problem where we were not properly terminating the permission list for two SELinux object classes. * tag 'selinux-pr-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: add proper NULL termination to the secclass_map permissions smack: differentiate between subjective and objective task credentials selinux: clarify task subjective and objective credentials lsm: separate security_task_getsecid() into subjective and objective variants nfs: account for selinux security context when deciding to share superblock nfs: remove unneeded null check in nfs_fill_super() lsm,selinux: add new hook to compare new mount to an existing mount selinux: fix misspellings using codespell tool selinux: fix misspellings using codespell tool selinux: measure state and policy capabilities selinux: Allow context mounts for unpriviliged overlayfs	2021-04-27 13:42:11 -07:00
Linus Torvalds	57fa2369ab	CFI on arm64 series for v5.13-rc1 ... - Clean up list_sort prototypes (Sami Tolvanen) - Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmCHCR8ACgkQiXL039xt wCZyFQ//fnUZaXR2K354zDyW6CJljMf+d94RF6rH+J6eMTH2/HXa5v0iJokwABLf ussP6qF4k5wtmI22Gm9A5Zc3e4iiry5pC0jOdk0mk4gzWwFN9MdgNxJZIGA3xqhS bsBK4AGrVKjtZl48G1/ZxJuNDeJhVp6GNK2n6/Gl4rZF6R7D/Upz0XelyJRdDpcM HIGma7jZl6xfGU0mdWCzpOGK1zdMca1WVs7A4YuurSbLn5PZJrcNVWLouDqt/Si2 AduSri1gyPClicgvqWjMOzhUpuw/nJtBLRl1x1EsWk/KSZ1/uNVjlewfzdN4fZrr zbtFr2gLubYLK6JOX7/LqoHlOTgE3tYLL+WIVN75DsOGZBKgHhmebTmWLyqzV0SL oqcyM5d3ucC6msdtAK5Fv4MSp8rpjqlK1Ha4SGRT6kC2wut7AhZ3KD7eyRIz8mV9 Sa9mhignGFJnTEUp+LSbYdrAudgSKxB40WyXPmswAXX4VJFRD4ONrrcAON/SzkUT Hw/JdFRCKkJjgwNQjIQoZcUNMTbFz2PlNIEnjJWm38YImQKQlCb2mXaZKCwBkf45 aheCZk17eKoxTCXFMd+KxlyNEtS2yBfq/PpZgvw7GW/pfFbWUg1+2O41LnihIe5v zu0hN1wNCQqgfxiMZqX1OTb9C/2vybzGsXILt+9nppjZ8EBU7iU= =wU6U -----END PGP SIGNATURE----- Merge tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull CFI on arm64 support from Kees Cook: "This builds on last cycle's LTO work, and allows the arm64 kernels to be built with Clang's Control Flow Integrity feature. This feature has happily lived in Android kernels for almost 3 years[1], so I'm excited to have it ready for upstream. The wide diffstat is mainly due to the treewide fixing of mismatched list_sort prototypes. Other things in core kernel are to address various CFI corner cases. The largest code portion is the CFI runtime implementation itself (which will be shared by all architectures implementing support for CFI). The arm64 pieces are Acked by arm64 maintainers rather than coming through the arm64 tree since carrying this tree over there was going to be awkward. CFI support for x86 is still under development, but is pretty close. There are a handful of corner cases on x86 that need some improvements to Clang and objtool, but otherwise works well. Summary: - Clean up list_sort prototypes (Sami Tolvanen) - Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen)" * tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: arm64: allow CONFIG_CFI_CLANG to be selected KVM: arm64: Disable CFI for nVHE arm64: ftrace: use function_nocfi for ftrace_call arm64: add __nocfi to __apply_alternatives arm64: add __nocfi to functions that jump to a physical address arm64: use function_nocfi with __pa_symbol arm64: implement function_nocfi psci: use function_nocfi for cpu_resume lkdtm: use function_nocfi treewide: Change list_sort to use const pointers bpf: disable CFI in dispatcher functions kallsyms: strip ThinLTO hashes from static functions kthread: use WARN_ON_FUNCTION_MISMATCH workqueue: use WARN_ON_FUNCTION_MISMATCH module: ensure __cfi_check alignment mm: add generic function_nocfi macro cfi: add __cficanonical add support for Clang CFI	2021-04-27 10:16:46 -07:00
Linus Torvalds	7e4910b9ac	seccomp updates for v5.13-rc1 ... - Fix "cacheable" typo in comments (Cui GaoSheng) - Fix CONFIG for /proc/$pid/status Seccomp_filters (Kenta.Tada@sony.com) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmCHBe0ACgkQiXL039xt wCadDA//cy6LXlzJ78tRy1Zj4/iRlvfLGQ6rNuhoWkm9nuLOTJlzmb9lPxLFo1lo N4FDuXE0daPvmgy/XVu9wBKDZsgTlegzikGARfQmeHJ7Wj1H8ibz1OJPd1o60p4Y pfeImxefoNKxx7IxnNFDMLHgVi+CtnOZklwlj+bobIWjzclNB2EacumnyJlPuboW 4ZHBSkG1roLkBB4Q10fI7OHV8lSuQp/IyrAypLybydJ0xiZgvGD3NPOA4N8KH8nR A0kbA953Rld/PFzw5inRqepyPZKtT07LJyfl1ff60OtKOHkVBXPv6pYrdgWs0A9y XZxdHjVV/MHLvcK9dBoZZGi0/907fvcEgtMacaRekevD5sqiqtNOH5B5rQsMwtXs s/Kvg1KgmVJBQwFcMRuAfXqnnPy2672XvDU5/uptVbhpOIcIVeHtGvygPkiobuuO V1sE+huGCw+xnfRIOOmytRTpkHMlIS9ev1ApfXtuUtbXbM0W1G6H7adc0KE4bApm D/fpv97myH42r/UghOL5EHVaLcnw8embVr/ij4WpMiC1TrhWy0XU27oJisG6xRw6 A2Q4ybO3VM85LgteeQg10BZFmnuwfHMRJPBL4TOhNSs5GBx5EmkEFByozvMst5xR W/GIDn7g7jy1H0wuQOQ7NCgU5+RDDslCOjCIJdSipwpsTc65QCQ= =m4xO -----END PGP SIGNATURE----- Merge tag 'seccomp-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull seccomp updates from Kees Cook: - Fix "cacheable" typo in comments (Cui GaoSheng) - Fix CONFIG for /proc/$pid/status Seccomp_filters (Kenta.Tada@sony.com) * tag 'seccomp-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: seccomp: Fix "cacheable" typo in comments seccomp: Fix CONFIG tests for Seccomp_filters	2021-04-27 10:03:12 -07:00
Lorenzo Bianconi	bb02478077	bpf, cpumap: Bulk skb using netif_receive_skb_list ... Rely on netif_receive_skb_list routine to send skbs converted from xdp_frames in cpu_map_kthread_run in order to improve i-cache usage. The proposed patch has been tested running xdp_redirect_cpu bpf sample available in the kernel tree that is used to redirect UDP frames from ixgbe driver to a cpumap entry and then to the networking stack. UDP frames are generated using pktgen. Packets are discarded by the UDP layer. $ xdp_redirect_cpu --cpu <cpu> --progname xdp_cpu_map0 --dev <eth> bpf-next: ~2.35Mpps bpf-next + cpumap skb-list: ~2.72Mpps Rename drops counter in kmem_alloc_drops since now it reports just kmem_cache_alloc_bulk failures Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Link: https://lore.kernel.org/bpf/c729f83e5d7482d9329e0f165bdbe5adcefd1510.1619169700.git.lorenzo@kernel.org	2021-04-27 17:13:49 +02:00
Daniel Borkmann	10bf4e8316	bpf: Fix propagation of 32 bit unsigned bounds from 64 bit bounds ... Similarly as b02709587e ("bpf: Fix propagation of 32-bit signed bounds from 64-bit bounds."), we also need to fix the propagation of 32 bit unsigned bounds from 64 bit counterparts. That is, really only set the u32_{min,max}_value when /both/ {umin,umax}_value safely fit in 32 bit space. For example, the register with a umin_value == 1 does /not/ imply that u32_min_value is also equal to 1, since umax_value could be much larger than 32 bit subregister can hold, and thus u32_min_value is in the interval [0,1] instead. Before fix, invalid tracking result of R2_w=inv1: [...] 5: R0_w=inv1337 R1=ctx(id=0,off=0,imm=0) R2_w=inv(id=0) R10=fp0 5: (35) if r2 >= 0x1 goto pc+1 [...] // goto path 7: R0=inv1337 R1=ctx(id=0,off=0,imm=0) R2=inv(id=0,umin_value=1) R10=fp0 7: (b6) if w2 <= 0x1 goto pc+1 [...] // goto path 9: R0=inv1337 R1=ctx(id=0,off=0,imm=0) R2=inv(id=0,smin_value=-9223372036854775807,smax_value=9223372032559808513,umin_value=1,umax_value=18446744069414584321,var_off=(0x1; 0xffffffff00000000),s32_min_value=1,s32_max_value=1,u32_max_value=1) R10=fp0 9: (bc) w2 = w2 10: R0=inv1337 R1=ctx(id=0,off=0,imm=0) R2_w=inv1 R10=fp0 [...] After fix, correct tracking result of R2_w=inv(id=0,umax_value=1,var_off=(0x0; 0x1)): [...] 5: R0_w=inv1337 R1=ctx(id=0,off=0,imm=0) R2_w=inv(id=0) R10=fp0 5: (35) if r2 >= 0x1 goto pc+1 [...] // goto path 7: R0=inv1337 R1=ctx(id=0,off=0,imm=0) R2=inv(id=0,umin_value=1) R10=fp0 7: (b6) if w2 <= 0x1 goto pc+1 [...] // goto path 9: R0=inv1337 R1=ctx(id=0,off=0,imm=0) R2=inv(id=0,smax_value=9223372032559808513,umax_value=18446744069414584321,var_off=(0x0; 0xffffffff00000001),s32_min_value=0,s32_max_value=1,u32_max_value=1) R10=fp0 9: (bc) w2 = w2 10: R0=inv1337 R1=ctx(id=0,off=0,imm=0) R2_w=inv(id=0,umax_value=1,var_off=(0x0; 0x1)) R10=fp0 [...] Thus, same issue as in b02709587e holds for unsigned subregister tracking. Also, align __reg64_bound_u32() similarly to __reg64_bound_s32() as done in b02709587e to make them uniform again. Fixes: 3f50f132d8 ("bpf: Verifier, do explicit ALU32 bounds tracking") Reported-by: Manfred Paul (@_manfp) Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org>	2021-04-27 17:13:49 +02:00
Florent Revest	38d26d89b3	bpf: Lock bpf_trace_printk's tmp buf before it is written to ... bpf_trace_printk uses a shared static buffer to hold strings before they are printed. A recent refactoring moved the locking of that buffer after it gets filled by mistake. Fixes: d9c9e4db18 ("bpf: Factorize bpf_trace_printk and bpf_seq_printf") Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210427112958.773132-1-revest@chromium.org	2021-04-27 08:04:34 -07:00
Linus Torvalds	5469f160e6	Power management updates for 5.13-rc1 ... - Add idle states table for IceLake-D to the intel_idle driver and update IceLake-X C6 data in it (Artem Bityutskiy). - Fix the C7 idle state on Tegra114 in the tegra cpuidle driver and drop the unused do_idle() firmware call from it (Dmitry Osipenko). - Fix cpuidle-qcom-spm Kconfig entry (He Ying). - Fix handling of possible negative tick_nohz_get_next_hrtimer() return values of in cpuidle governors (Rafael Wysocki). - Add support for frequency-invariance to the ACPI CPPC cpufreq driver and update the frequency-invariance engine (FIE) to use it as needed (Viresh Kumar). - Simplify the default delay_us setting in the ACPI CPPC cpufreq driver (Tom Saeger). - Clean up frequency-related computations in the intel_pstate cpufreq driver (Rafael Wysocki). - Fix TBG parent setting for load levels in the armada-37xx cpufreq driver and drop the CPU PM clock .set_parent method for armada-37xx (Marek Behún). - Fix multiple issues in the armada-37xx cpufreq driver (Pali Rohár). - Fix handling of dev_pm_opp_of_cpumask_add_table() return values in cpufreq-dt to take the -EPROBE_DEFER one into acconut as appropriate (Quanyang Wang). - Fix format string in ia64-acpi-cpufreq (Sergei Trofimovich). - Drop the unused for_each_policy() macro from cpufreq (Shaokun Zhang). - Simplify computations in the schedutil cpufreq governor to avoid unnecessary overhead (Yue Hu). - Fix typos in the s5pv210 cpufreq driver (Bhaskar Chowdhury). - Fix cpufreq documentation links in Kconfig (Alexander Monakov). - Fix PCI device power state handling in pci_enable_device_flags() to avoid issuse in some cases when the device depends on an ACPI power resource (Rafael Wysocki). - Add missing documentation of pm_runtime_resume_and_get() (Alan Stern). - Add missing static inline stub for pm_runtime_has_no_callbacks() to pm_runtime.h and drop the unused try_to_freeze_nowarn() definition (YueHaibing). - Drop duplicate struct device declaration from pm.h and fix a structure type declaration in intel_rapl.h (Wan Jiabing). - Use dev_set_name() instead of an open-coded equivalent of it in the wakeup sources code and drop a redundant local variable initialization from it (Andy Shevchenko, Colin Ian King). - Use crc32 instead of md5 for e820 memory map integrity check during resume from hibernation on x86 (Chris von Recklinghausen). - Fix typos in comments in the system-wide and hibernation support code (Lu Jialin). - Modify the generic power domains (genpd) code to avoid resuming devices in the "prepare" phase of system-wide suspend and hibernation (Ulf Hansson). - Add Hygon Fam18h RAPL support to the intel_rapl power capping driver (Pu Wen). - Add MAINTAINERS entry for the dynamic thermal power management (DTPM) code (Daniel Lezcano). - Add devm variants of operating performance points (OPP) API functions and switch over some users of the OPP framework to the new resource-managed API (Yangtao Li and Dmitry Osipenko). - Update devfreq core: * Register devfreq devices as cooling devices on demand (Daniel Lezcano). * Add missing unlock opeation in devfreq_add_device() (Lukasz Luba). * Use the next frequency as resume_freq instead of the previous frequency when using the opp-suspend property (Dong Aisheng). * Check get_dev_status in devfreq_update_stats() (Dong Aisheng). * Fix set_freq path for the userspace governor in Kconfig (Dong Aisheng). * Remove invalid description of get_target_freq() (Dong Aisheng). - Update devfreq drivers: * imx8m-ddrc: Remove imx8m_ddrc_get_dev_status() and unneeded of_match_ptr() (Dong Aisheng, Fabio Estevam). * rk3399_dmc: dt-bindings: Add rockchip,pmu phandle and drop references to undefined symbols (Enric Balletbo i Serra, Gaël PORTAY). * rk3399_dmc: Use dev_err_probe() to simplify the code (Krzysztof Kozlowski). * imx-bus: Remove unneeded of_match_ptr() (Fabio Estevam). - Fix kernel-doc warnings in three places (Pierre-Louis Bossart). - Fix typo in the pm-graph utility code (Ricardo Ribalda). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmCHAUISHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxAxMP/0tFjgxeaJ3chYaiqoPlk2QX/XdwqJvm 8OOu2qBMWbt2bubcIlAPpdlCNaERI4itF7E8za7t9alswdq7YPWGmNR9snCXUKhD BzERuicZTeOcCk2P3DTgzLVc4EzF6wutA3lTdYYZIpf+LuuB+guG8zgMzScRHIsM N3I83O+iLTA9ifIqN0/wH//a0ISvo6rSWtcbx+48d5bYvYixW7CsBmoxWHhGiYsw 4PJ4AzbdNJEhQp91SBYPIAmqwV88FZUPoYnRazXMxOSevMewhP9JuCHXAujC3gLV l5d2TBaBV4EBYLD5tfCpJvHMXhv/yBpg6KRivjri+zEnY1TAqIlfR4vYiL7puVvQ PdwjyvNFDNGyUSX/AAwYF6F4WCtIhw8hCahw6Dw2zcDz0plFdRZmWAiTdmIjECJK 8EvwJNlmdl27G1y+EBc6NnwzEFZQwiu9F5bUHUkmc3fF1M1aFTza8WDNDo30TC94 94c+uVBRL2fBePl4FfGZATfJbOMb8+vDIkroQxrIjQDT/7Ha3Mz75JZDRHItZo92 +4fES2eFdfZISCLIQMBY5TeXox3O8qsirC1k4qELwy71gPUE9CpP3FkxKIvyZLlv +6fS9ttpUfyFBF7gqrEy+ziVk1Rm4oorLmWCtthz4xyerzj5+vtZQqKzcySk0GA5 hYkseZkedR6y =t+SG -----END PGP SIGNATURE----- Merge tag 'pm-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "These add some new hardware support (for example, IceLake-D idle states in intel_idle), fix some issues (for example, the handling of negative "sleep length" values in cpuidle governors), add new functionality to the existing drivers (for example, scale-invariance support in the ACPI CPPC cpufreq driver) and clean up code all over. Specifics: - Add idle states table for IceLake-D to the intel_idle driver and update IceLake-X C6 data in it (Artem Bityutskiy). - Fix the C7 idle state on Tegra114 in the tegra cpuidle driver and drop the unused do_idle() firmware call from it (Dmitry Osipenko). - Fix cpuidle-qcom-spm Kconfig entry (He Ying). - Fix handling of possible negative tick_nohz_get_next_hrtimer() return values of in cpuidle governors (Rafael Wysocki). - Add support for frequency-invariance to the ACPI CPPC cpufreq driver and update the frequency-invariance engine (FIE) to use it as needed (Viresh Kumar). - Simplify the default delay_us setting in the ACPI CPPC cpufreq driver (Tom Saeger). - Clean up frequency-related computations in the intel_pstate cpufreq driver (Rafael Wysocki). - Fix TBG parent setting for load levels in the armada-37xx cpufreq driver and drop the CPU PM clock .set_parent method for armada-37xx (Marek Behún). - Fix multiple issues in the armada-37xx cpufreq driver (Pali Rohár). - Fix handling of dev_pm_opp_of_cpumask_add_table() return values in cpufreq-dt to take the -EPROBE_DEFER one into acconut as appropriate (Quanyang Wang). - Fix format string in ia64-acpi-cpufreq (Sergei Trofimovich). - Drop the unused for_each_policy() macro from cpufreq (Shaokun Zhang). - Simplify computations in the schedutil cpufreq governor to avoid unnecessary overhead (Yue Hu). - Fix typos in the s5pv210 cpufreq driver (Bhaskar Chowdhury). - Fix cpufreq documentation links in Kconfig (Alexander Monakov). - Fix PCI device power state handling in pci_enable_device_flags() to avoid issuse in some cases when the device depends on an ACPI power resource (Rafael Wysocki). - Add missing documentation of pm_runtime_resume_and_get() (Alan Stern). - Add missing static inline stub for pm_runtime_has_no_callbacks() to pm_runtime.h and drop the unused try_to_freeze_nowarn() definition (YueHaibing). - Drop duplicate struct device declaration from pm.h and fix a structure type declaration in intel_rapl.h (Wan Jiabing). - Use dev_set_name() instead of an open-coded equivalent of it in the wakeup sources code and drop a redundant local variable initialization from it (Andy Shevchenko, Colin Ian King). - Use crc32 instead of md5 for e820 memory map integrity check during resume from hibernation on x86 (Chris von Recklinghausen). - Fix typos in comments in the system-wide and hibernation support code (Lu Jialin). - Modify the generic power domains (genpd) code to avoid resuming devices in the "prepare" phase of system-wide suspend and hibernation (Ulf Hansson). - Add Hygon Fam18h RAPL support to the intel_rapl power capping driver (Pu Wen). - Add MAINTAINERS entry for the dynamic thermal power management (DTPM) code (Daniel Lezcano). - Add devm variants of operating performance points (OPP) API functions and switch over some users of the OPP framework to the new resource-managed API (Yangtao Li and Dmitry Osipenko). - Update devfreq core: * Register devfreq devices as cooling devices on demand (Daniel Lezcano). * Add missing unlock opeation in devfreq_add_device() (Lukasz Luba). * Use the next frequency as resume_freq instead of the previous frequency when using the opp-suspend property (Dong Aisheng). * Check get_dev_status in devfreq_update_stats() (Dong Aisheng). * Fix set_freq path for the userspace governor in Kconfig (Dong Aisheng). * Remove invalid description of get_target_freq() (Dong Aisheng). - Update devfreq drivers: * imx8m-ddrc: Remove imx8m_ddrc_get_dev_status() and unneeded of_match_ptr() (Dong Aisheng, Fabio Estevam). * rk3399_dmc: dt-bindings: Add rockchip,pmu phandle and drop references to undefined symbols (Enric Balletbo i Serra, Gaël PORTAY). * rk3399_dmc: Use dev_err_probe() to simplify the code (Krzysztof Kozlowski). * imx-bus: Remove unneeded of_match_ptr() (Fabio Estevam). - Fix kernel-doc warnings in three places (Pierre-Louis Bossart). - Fix typo in the pm-graph utility code (Ricardo Ribalda)" * tag 'pm-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (74 commits) PM: wakeup: remove redundant assignment to variable retval PM: hibernate: x86: Use crc32 instead of md5 for hibernation e820 integrity check cpufreq: Kconfig: fix documentation links PM: wakeup: use dev_set_name() directly PM: runtime: Add documentation for pm_runtime_resume_and_get() cpufreq: intel_pstate: Simplify intel_pstate_update_perf_limits() cpufreq: armada-37xx: Fix module unloading cpufreq: armada-37xx: Remove cur_frequency variable cpufreq: armada-37xx: Fix determining base CPU frequency cpufreq: armada-37xx: Fix driver cleanup when registration failed clk: mvebu: armada-37xx-periph: Fix workaround for switching from L1 to L0 clk: mvebu: armada-37xx-periph: Fix switching CPU freq from 250 Mhz to 1 GHz cpufreq: armada-37xx: Fix the AVS value for load L1 clk: mvebu: armada-37xx-periph: remove .set_parent method for CPU PM clock cpufreq: armada-37xx: Fix setting TBG parent for load levels cpuidle: Fix ARM_QCOM_SPM_CPUIDLE configuration cpuidle: tegra: Remove do_idle firmware call cpuidle: tegra: Fix C7 idling state on Tegra114 PM: sleep: fix typos in comments cpufreq: Remove unused for_each_policy macro ...	2021-04-26 15:10:25 -07:00
Linus Torvalds	31a24ae89c	arm64 updates for 5.13: ... - MTE asynchronous support for KASan. Previously only synchronous (slower) mode was supported. Asynchronous is faster but does not allow precise identification of the illegal access. - Run kernel mode SIMD with softirqs disabled. This allows using NEON in softirq context for crypto performance improvements. The conditional yield support is modified to take softirqs into account and reduce the latency. - Preparatory patches for Apple M1: handle CPUs that only have the VHE mode available (host kernel running at EL2), add FIQ support. - arm64 perf updates: support for HiSilicon PA and SLLC PMU drivers, new functions for the HiSilicon HHA and L3C PMU, cleanups. - Re-introduce support for execute-only user permissions but only when the EPAN (Enhanced Privileged Access Never) architecture feature is available. - Disable fine-grained traps at boot and improve the documented boot requirements. - Support CONFIG_KASAN_VMALLOC on arm64 (only with KASAN_GENERIC). - Add hierarchical eXecute Never permissions for all page tables. - Add arm64 prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) allowing user programs to control which PAC keys are enabled in a particular task. - arm64 kselftests for BTI and some improvements to the MTE tests. - Minor improvements to the compat vdso and sigpage. - Miscellaneous cleanups. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAmB5xkkACgkQa9axLQDI XvEBgRAAsr6r8gsBQJP3FDHmbtbVf2ej5QJTCOAQAGHbTt0JH7Pk03pWSBr7h5nF vsddRDxxeDgB6xd7jWP7EvDaPxHeB0CdSj5gG8EP/ZdOm8sFAwB1ZIHWikgUgSwW nu6R28yXTMSj+EkyFtahMhTMJ1EMF4sCPuIgAo59ST5w/UMMqLCJByOu4ej6RPKZ aeSJJWaDLBmbgnTKWxRvCc/MgIx4J/LAHWGkdpGjuMK6SLp38Kdf86XcrklXtzwf K30ZYeoKq8zZ+nFOsK9gBVlOlocZcbS1jEbN842jD6imb6vKLQtBWrKk9A6o4v5E XulORWcSBhkZb3ItIU9+6SmelUExf0VeVlSp657QXYPgquoIIGvFl6rCwhrdGMGO bi6NZKCfJvcFZJoIN1oyhuHejgZSBnzGEcvhvzNdg7ItvOCed7q3uXcGHz/OI6tL 2TZKddzHSEMVfTo0D+RUsYfasZHI1qAiQ0mWVC31c+YHuRuW/K/jlc3a5TXlSBUa Dwu0/zzMLiqx65ISx9i7XNMrngk55uzrS6MnwSByPoz4M4xsElZxt3cbUxQ8YAQz jhxTHs1Pwes8i7f4n61ay/nHCFbmVvN/LlsPRpZdwd8JumThLrDolF3tc6aaY0xO hOssKtnGY4Xvh/WitfJ5uvDb1vMObJKTXQEoZEJh4hlNQDxdeUE= =6NGI -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - MTE asynchronous support for KASan. Previously only synchronous (slower) mode was supported. Asynchronous is faster but does not allow precise identification of the illegal access. - Run kernel mode SIMD with softirqs disabled. This allows using NEON in softirq context for crypto performance improvements. The conditional yield support is modified to take softirqs into account and reduce the latency. - Preparatory patches for Apple M1: handle CPUs that only have the VHE mode available (host kernel running at EL2), add FIQ support. - arm64 perf updates: support for HiSilicon PA and SLLC PMU drivers, new functions for the HiSilicon HHA and L3C PMU, cleanups. - Re-introduce support for execute-only user permissions but only when the EPAN (Enhanced Privileged Access Never) architecture feature is available. - Disable fine-grained traps at boot and improve the documented boot requirements. - Support CONFIG_KASAN_VMALLOC on arm64 (only with KASAN_GENERIC). - Add hierarchical eXecute Never permissions for all page tables. - Add arm64 prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) allowing user programs to control which PAC keys are enabled in a particular task. - arm64 kselftests for BTI and some improvements to the MTE tests. - Minor improvements to the compat vdso and sigpage. - Miscellaneous cleanups. * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (86 commits) arm64/sve: Add compile time checks for SVE hooks in generic functions arm64/kernel/probes: Use BUG_ON instead of if condition followed by BUG. arm64: pac: Optimize kernel entry/exit key installation code paths arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) arm64: mte: make the per-task SCTLR_EL1 field usable elsewhere arm64/sve: Remove redundant system_supports_sve() tests arm64: fpsimd: run kernel mode NEON with softirqs disabled arm64: assembler: introduce wxN aliases for wN registers arm64: assembler: remove conditional NEON yield macros kasan, arm64: tests supports for HW_TAGS async mode arm64: mte: Report async tag faults before suspend arm64: mte: Enable async tag check fault arm64: mte: Conditionally compile mte_enable_kernel_*() arm64: mte: Enable TCO in functions that can read beyond buffer limits kasan: Add report for async mode arm64: mte: Drop arch_enable_tagging() kasan: Add KASAN mode kernel parameter arm64: mte: Add asynchronous mode support arm64: Get rid of CONFIG_ARM64_VHE arm64: Cope with CPUs stuck in VHE mode ...	2021-04-26 10:25:03 -07:00
Linus Torvalds	87dcebff92	The time and timers updates contain: ... Core changes: - Allow runtime power management when the clocksource is changed. - A correctness fix for clock_adjtime32() so that the return value on success is not overwritten by the result of the copy to user. - Allow late installment of broadcast clockevent devices which was broken because nothing switched them over to oneshot mode. This went unnoticed so far because clockevent devices used to be built in, but now people started to make them modular. - Debugfs related simplifications - Small cleanups and improvements here and there Driver changes: - The usual set of device tree binding updates for a wide range of drivers/devices. - The usual updates and improvements for drivers all over the place but nothing outstanding. - No new clocksource/event drivers. They'll come back next time. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmCGieYTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYobRJEACNCtecUXdyt/u+ViDgHwG1XOHSZUkG zBO6E/uZ3G6ZUkr6FogAaY2eMMrSdSUyqbiNBSYBJki2ptMJWF5Li5VzqINmrBuD VyjK3FEDV0bXW9EJOm4d+95pMyFQ/pYv9VPcByj7VW21t+IDE/4pLeZ8M8shNDHa pmMnR/tgX4ZZtSrX2NqCUNoTrkycaz8d5NOuso5HjKvPkJ5BU2kSxULTGmvaeTil 8d+70AetApDgzAWpCnJFPlLlOHIPyhnMxS5edvsMIbMIkRLsnI+b3LsPZe+CqVZ0 zaP6KYvG+iqU8nKdz7OweV1fLgBD52GKgHlpTkhhYs3GW4XBEXDrsyoEyeIiZ22u YUkTzFvZ4JG/+80UUaKpLDIGYWUj1h+xe/EtWS0s8lj108RsNLghd/0YjFMikspT fYC2WpaXJDz3URbSV57OXGbwhg2zOYI5Supg6wNrmFfcld3k6CSitG4idDpIGjJE 8WIcZmeZSelDufskiY8RmsiTumqNOf5P33F71r9JRI6QU9RsyYb3fJN71AFKnLq2 31YEAShpzPYG5EGRinPymJRi3icdmcEQECz/pWUb6ua0s/HG1+HD9emLwHzvPdul hcWRq19GaK1YBzOfV60+8cdxW8ZEOROvRVdYJO8FoYcnueUJmOSM+boqSkRtDw3o RywO8BetxukPJg== =F6Du -----END PGP SIGNATURE----- Merge tag 'timers-core-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "The time and timers updates contain: Core changes: - Allow runtime power management when the clocksource is changed. - A correctness fix for clock_adjtime32() so that the return value on success is not overwritten by the result of the copy to user. - Allow late installment of broadcast clockevent devices which was broken because nothing switched them over to oneshot mode. This went unnoticed so far because clockevent devices used to be built in, but now people started to make them modular. - Debugfs related simplifications - Small cleanups and improvements here and there Driver changes: - The usual set of device tree binding updates for a wide range of drivers/devices. - The usual updates and improvements for drivers all over the place but nothing outstanding. - No new clocksource/event drivers. They'll come back next time" * tag 'timers-core-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) posix-timers: Preserve return value in clock_adjtime32() tick/broadcast: Allow late registered device to enter oneshot mode tick: Use tick_check_replacement() instead of open coding it time/timecounter: Mark 1st argument of timecounter_cyc2time() as const dt-bindings: timer: nuvoton,npcm7xx: Add wpcm450-timer clocksource/drivers/arm_arch_timer: Add __ro_after_init and __init clocksource/drivers/timer-ti-dm: Handle dra7 timer wrap errata i940 clocksource/drivers/timer-ti-dm: Prepare to handle dra7 timer wrap issue clocksource/drivers/dw_apb_timer_of: Add handling for potential memory leak clocksource/drivers/npcm: Add support for WPCM450 clocksource/drivers/sh_cmt: Don't use CMTOUT_IE with R-Car Gen2/3 clocksource/drivers/pistachio: Fix trivial typo clocksource/drivers/ingenic_ost: Fix return value check in ingenic_ost_probe() clocksource/drivers/timer-ti-dm: Add missing set_state_oneshot_stopped clocksource/drivers/timer-ti-dm: Fix posted mode status check order dt-bindings: timer: renesas,cmt: Document R8A77961 dt-bindings: timer: renesas,cmt: Add r8a779a0 CMT support clocksource/drivers/ingenic-ost: Add support for the JZ4760B clocksource/drivers/ingenic: Add support for the JZ4760 dt-bindings: timer: ingenic: Add compatible strings for JZ4760(B) ...	2021-04-26 09:54:03 -07:00
Linus Torvalds	91552ab8ff	The usual updates from the irq departement: ... Core changes: - Provide IRQF_NO_AUTOEN as a flag for request*_irq() so drivers can be cleaned up which either use a seperate mechanism to prevent auto-enable at request time or have a racy mechanism which disables the interrupt right after request. - Get rid of the last usage of irq_create_identity_mapping() and remove the interface. - An overhaul of tasklet_disable(). Most usage sites of tasklet_disable() are in task context and usually in cleanup, teardown code pathes. tasklet_disable() spinwaits for a tasklet which is currently executed. That's not only a problem for PREEMPT_RT where this can lead to a live lock when the disabling task preempts the softirq thread. It's also problematic in context of virtualization when the vCPU which runs the tasklet is scheduled out and the disabling code has to spin wait until it's scheduled back in. Though there are a few code pathes which invoke tasklet_disable() from non-sleepable context. For these a new disable variant which still spinwaits is provided which allows to switch tasklet_disable() to a sleep wait mechanism. For the atomic use cases this does not solve the live lock issue on PREEMPT_RT. That is mitigated by blocking on the RT specific softirq lock. - The PREEMPT_RT specific implementation of softirq processing and local_bh_disable/enable(). On RT enabled kernels soft interrupt processing happens always in task context and all interrupt handlers, which are not explicitly marked to be invoked in hard interrupt context are forced into task context as well. This allows to protect against softirq processing with a per CPU lock, which in turn allows to make BH disabled regions preemptible. Most of the softirq handling code is still shared. The RT/non-RT specific differences are addressed with a set of inline functions which provide the context specific functionality. The local_bh_disable() / local_bh_enable() mechanism are obviously seperate. - The usual set of small improvements and cleanups Driver changes: - New drivers for Nuvoton WPCM450 and DT 79rc3243x interrupt controllers - Extended functionality for MStar, STM32 and SC7280 irq chips - Enhanced robustness for ARM GICv3/4.1 drivers - The usual set of cleanups and improvements all over the place -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmCGh5wTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoZ+/EACWBpQ/2ZHizEw1bzjaDzJrR8U228xu wNi7nSP92Y07nJ3cCX7a6TJ53mqd0n3RT+DprlsOuqSN0D7Ktr/x44V/aZtm0d3N GkFOlpeGCRnHusLaUTwk7a8289LuoQ7OhSxIB409n1I4nLI96ZK41D1tYonMYl6E nxDiGADASfjaciBWbjwJO/mlwmiW/VRpSTxswx0wzakFfbIx9iKyKv1bCJQZ5JK+ lHmf0jxpDIs1EVK/ElJ9Ky6TMBlEmZyiX7n6rujtwJ1W+Jc/uL/y8pLJvGwooVmI yHTYsLMqzviCbAMhJiB3h1qs3GbCGlM78prgJTnOd0+xEUOCcopCRQlsTXVBq8Nb OS+HNkYmYXRfiSH6lINJsIok8Xis28bAw/qWz2Ho+8wLq0TI8crK38roD1fPndee FNJRhsPPOBkscpIldJ0Cr0X5lclkJFiAhAxORPHoseKvQSm7gBMB7H99xeGRffTn yB3XqeTJMvPNmAHNN4Brv6ey3OjwnEWBgwcnIM2LtbIlRtlmxTYuR+82OPOgEvzk fSrjFFJqu0LEMLEOXS4pYN824PawjV//UAy4IaG8AodmUUCSGHgw1gTVa4sIf72t tXY54HqWfRWRpujhVRgsZETqBUtZkL6yvpoe8f6H7P91W5tAfv3oj4ch9RkhUo+Z b0/u9T0+Fpbg+w== =id4G -----END PGP SIGNATURE----- Merge tag 'irq-core-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "The usual updates from the irq departement: Core changes: - Provide IRQF_NO_AUTOEN as a flag for request*_irq() so drivers can be cleaned up which either use a seperate mechanism to prevent auto-enable at request time or have a racy mechanism which disables the interrupt right after request. - Get rid of the last usage of irq_create_identity_mapping() and remove the interface. - An overhaul of tasklet_disable(). Most usage sites of tasklet_disable() are in task context and usually in cleanup, teardown code pathes. tasklet_disable() spinwaits for a tasklet which is currently executed. That's not only a problem for PREEMPT_RT where this can lead to a live lock when the disabling task preempts the softirq thread. It's also problematic in context of virtualization when the vCPU which runs the tasklet is scheduled out and the disabling code has to spin wait until it's scheduled back in. There are a few code pathes which invoke tasklet_disable() from non-sleepable context. For these a new disable variant which still spinwaits is provided which allows to switch tasklet_disable() to a sleep wait mechanism. For the atomic use cases this does not solve the live lock issue on PREEMPT_RT. That is mitigated by blocking on the RT specific softirq lock. - The PREEMPT_RT specific implementation of softirq processing and local_bh_disable/enable(). On RT enabled kernels soft interrupt processing happens always in task context and all interrupt handlers, which are not explicitly marked to be invoked in hard interrupt context are forced into task context as well. This allows to protect against softirq processing with a per CPU lock, which in turn allows to make BH disabled regions preemptible. Most of the softirq handling code is still shared. The RT/non-RT specific differences are addressed with a set of inline functions which provide the context specific functionality. The local_bh_disable() / local_bh_enable() mechanism are obviously seperate. - The usual set of small improvements and cleanups Driver changes: - New drivers for Nuvoton WPCM450 and DT 79rc3243x interrupt controllers - Extended functionality for MStar, STM32 and SC7280 irq chips - Enhanced robustness for ARM GICv3/4.1 drivers - The usual set of cleanups and improvements all over the place" * tag 'irq-core-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits) irqchip/xilinx: Expose Kconfig option for Zynq/ZynqMP irqchip/gic-v3: Do not enable irqs when handling spurious interrups dt-bindings: interrupt-controller: Add IDT 79RC3243x Interrupt Controller irqchip: Add support for IDT 79rc3243x interrupt controller irqdomain: Drop references to recusive irqdomain setup irqdomain: Get rid of irq_create_strict_mappings() irqchip/jcore-aic: Kill use of irq_create_strict_mappings() ARM: PXA: Kill use of irq_create_strict_mappings() irqchip/gic-v4.1: Disable vSGI upon (GIC CPUIF < v4.1) detection irqchip/tb10x: Use 'fallthrough' to eliminate a warning genirq: Reduce irqdebug cacheline bouncing kernel: Initialize cpumask before parsing irqchip/wpcm450: Drop COMPILE_TEST irqchip/irq-mst: Support polarity configuration irqchip: Add driver for WPCM450 interrupt controller dt-bindings: interrupt-controller: Add nuvoton, wpcm450-aic dt-bindings: qcom,pdc: Add compatible for sc7280 irqchip/stm32: Add usart instances exti direct event support irqchip/gic-v3: Fix OF_BAD_ADDR error handling irqchip/sifive-plic: Mark two global variables __ro_after_init ...	2021-04-26 09:43:16 -07:00
Linus Torvalds	3b671bf4a7	A trivial cleanup of typo fixes. ... -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmCGgSATHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoTdtD/wPWKg5olDLUr3S9Oh15dPj2zzrZHl8 opJkN/0LpZvTYJmAtVrV1SCywbQYhpsLEB+khBZj0OY/A9gDRGM2uBxxL3oyvyOU hRjJkimJuNF3ErDAIFnW3rmgYPIgRnUAnS1hflUpeROHeL5CfR/nPqQgT6I79fmZ c23kbGOdz7lw5vUNPiSvpU52UT4HfTfDs5NXB3B4A7Lc2292o3xCw20/LZGsICRy 6CybMM9Lp7yKdosPZxyjjS9Fu2U2/HptmQ0ueNC4/GYKxq+zM3JDNHECZ4IXVSlu +KPgqIfrhec0fwcyWXdEPwDLvgg4XPipxr5mLi9qa45MFxXhtzeKdSD2ktUFU5QH G10VWfslDt1VBavKR4u4lz/1L0iiRW3EyuMnbuZNCvbObfNY/jKs+3Kn4OcZIYfL DurPMvBZo9BiS3+rIROEETJvzvf84sstDU2c4dZzQMKxtSs1DvVDpyypSqzBkBcr n2nWRNsAVhSz0avJ3ZP8yphy/8TFWUY9H1sLQC68ih3frn5sgKN7Ng2cWGCVzL5P 2geUmbEybdUO9x8mz6ui78kDgwrapyHZlXOQvbaSmlEDA00tEQM0XRFC+B29OwkX P37SQjlkvnH5hYxU2x+v4tCrZvrefYuv30E0RbdV5g0WPXAYUL7OH7hK+UzZkKGh iZEVlJ2vEUw/lQ== =m4pW -----END PGP SIGNATURE----- Merge tag 'core-entry-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core entry updates from Thomas Gleixner: "A trivial cleanup of typo fixes" * tag 'core-entry-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: entry: Fix typos in comments	2021-04-26 09:41:15 -07:00
Linus Torvalds	ffc766b31e	This is an irregular pull request for sending a lockdep patch. ... Peter Zijlstra asked us to find bad annotation that blows up the lockdep storage [1][2][3] but we could not find such annotation [4][5], and Peter cannot give us feedback any more [6]. Since we tested this patch on linux-next.git without problems, and keeping this problem unresolved discourages kernel testing which is more painful, I'm sending this patch without forever waiting for response from Peter. [1] https://lkml.kernel.org/r/20200916115057.GO2674@hirez.programming.kicks-ass.net [2] https://lkml.kernel.org/r/20201118142357.GW3121392@hirez.programming.kicks-ass.net [3] https://lkml.kernel.org/r/20201118151038.GX3121392@hirez.programming.kicks-ass.net [4] https://lkml.kernel.org/r/CACT4Y+asqRbjaN9ras=P5DcxKgzsnV0fvV0tYb2VkT+P00pFvQ@mail.gmail.com [5] https://lkml.kernel.org/r/4b89985e-99f9-18bc-0bf1-c883127dc70c@i-love.sakura.ne.jp [6] https://lkml.kernel.org/r/CACT4Y+YnHFV1p5mbhby2nyOaNTy8c_yoVk86z5avo14KWs0s1A@mail.gmail.com kernel/locking/lockdep.c | 2 - kernel/locking/lockdep_internals.h | 8 +++---- lib/Kconfig.debug | 40 +++++++++++++++++++++++++++++++++++++ 3 files changed, 45 insertions(+), 5 deletions(-) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJghetlAAoJEEJfEo0MZPUqMaEP/i0pkfOyKBdUe61Y9g0A2TmN h5I59KiSsgmx7dK90Q2GP1kUQE9ROCiqIz9qHzCzWfk9jljgFgRfECBKHqH+K7Tq AlQQkJmAiwpg+1scSkhoxBOrSGXHe2xB4qvazvw7tAAIDPjcV/pkFlNKaUtItzr2 VPr4t6Eis/MZ7Pau2xLFLX2gRn5KvpsbcL+wydrDfqlXx3pNXlBvChBxixk90HS6 0BC5pgb68pXm8Emzbp3+iloy0VuG/BHDA/vy02k5zUjMM7Zy+aGxR/cl2jvc+lWd wyRWhwbSjTUrYs3Olmjkybj15lsgl573oIptVhIIrXuvjpyY5v1IH1gkLoxJgr5d yaKSdYwyN/OPI3KireEfaSgc6IqrJ1K9gLh1Knqw4JeoJngEVEkmBwBg/izpiXoL WVlWZuLkYtOTWxpsTOiCtzv4KkFhFtE61IEAIEsvvj9oeLQJu7JUR8oW0ZQtdfXg Em0IbObS8VGW322MNmb1p9SsaYvOueWyKzImEVlCBAb2g6PUYuiAwiOw8/tvsDFr KPXCPpaqKCFtp+BG21fn6GpTqJ4GteWy6JK6C9i/xhIWmv+QRijNEmPlyYQ0YMkd a8z8rqRqexknlPCJy/9AZWfBo6kg5Dt3icrrNVKoXLVC/LNYaHQvIKsGzZaQ1Pyq W6rnMbLCRD199sqoEFrH =E7U/ -----END PGP SIGNATURE----- Merge tag 'tomoyo-pr-20210426' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1 Pull lockdep capacity limit updates from Tetsuo Handa: "syzbot is occasionally reporting that fuzz testing is terminated due to hitting upper limits lockdep can track. Analysis via /proc/lockdep* did not show any obvious culprits, allow tuning tracing capacity constants" * tag 'tomoyo-pr-20210426' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1: lockdep: Allow tuning tracing capacity constants.	2021-04-26 08:44:23 -07:00
Rafael J. Wysocki	bf0cc8360e	Merge branches 'pm-core', 'pm-pci', 'pm-sleep', 'pm-domains' and 'powercap' ... * pm-core: PM: runtime: Add documentation for pm_runtime_resume_and_get() PM: runtime: Replace inline function pm_runtime_callbacks_present() PM: core: Remove duplicate declaration from header file * pm-pci: PCI: PM: Do not read power state in pci_enable_device_flags() * pm-sleep: PM: wakeup: remove redundant assignment to variable retval PM: hibernate: x86: Use crc32 instead of md5 for hibernation e820 integrity check PM: wakeup: use dev_set_name() directly PM: sleep: fix typos in comments freezer: Remove unused inline function try_to_freeze_nowarn() * pm-domains: PM: domains: Don't runtime resume devices at genpd_prepare() * powercap: powercap: RAPL: Fix struct declaration in header file MAINTAINERS: Add DTPM subsystem maintainer powercap: Add Hygon Fam18h RAPL support	2021-04-26 16:57:17 +02:00
Rafael J. Wysocki	dd9f2ae924	Merge branch 'pm-cpufreq' ... * pm-cpufreq: (22 commits) cpufreq: Kconfig: fix documentation links cpufreq: intel_pstate: Simplify intel_pstate_update_perf_limits() cpufreq: armada-37xx: Fix module unloading cpufreq: armada-37xx: Remove cur_frequency variable cpufreq: armada-37xx: Fix determining base CPU frequency cpufreq: armada-37xx: Fix driver cleanup when registration failed clk: mvebu: armada-37xx-periph: Fix workaround for switching from L1 to L0 clk: mvebu: armada-37xx-periph: Fix switching CPU freq from 250 Mhz to 1 GHz cpufreq: armada-37xx: Fix the AVS value for load L1 clk: mvebu: armada-37xx-periph: remove .set_parent method for CPU PM clock cpufreq: armada-37xx: Fix setting TBG parent for load levels cpufreq: Remove unused for_each_policy macro cpufreq: dt: dev_pm_opp_of_cpumask_add_table() may return -EPROBE_DEFER cpufreq: intel_pstate: Clean up frequency computations cpufreq: cppc: simplify default delay_us setting cpufreq: Rudimentary typos fix in the file s5pv210-cpufreq.c cpufreq: CPPC: Add support for frequency invariance ia64: fix format string for ia64-acpi-cpu-freq cpufreq: schedutil: Call sugov_update_next_freq() before check to fast_switch_enabled arch_topology: Export arch_freq_scale and helpers ...	2021-04-26 16:56:50 +02:00
Jiri Olsa	f3a9507554	bpf: Allow trampoline re-attach for tracing and lsm programs ... Currently we don't allow re-attaching of trampolines. Once it's detached, it can't be re-attach even when the program is still loaded. Adding the possibility to re-attach the loaded tracing and lsm programs. Fixing missing unlock with proper cleanup goto jump reported by Julia. Reported-by: kernel test robot <lkp@intel.com> Reported-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: KP Singh <kpsingh@kernel.org> Link: https://lore.kernel.org/bpf/20210414195147.1624932-2-jolsa@kernel.org	2021-04-25 21:09:01 -07:00
David S. Miller	5f6c2f536d	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next ... Alexei Starovoitov says: ==================== pull-request: bpf-next 2021-04-23 The following pull-request contains BPF updates for your *net-next* tree. We've added 69 non-merge commits during the last 22 day(s) which contain a total of 69 files changed, 3141 insertions(+), 866 deletions(-). The main changes are: 1) Add BPF static linker support for extern resolution of global, from Andrii. 2) Refine retval for bpf_get_task_stack helper, from Dave. 3) Add a bpf_snprintf helper, from Florent. 4) A bunch of miscellaneous improvements from many developers. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>	2021-04-25 18:02:32 -07:00
Stefan Metzmacher	ff24430330	kernel: always initialize task->pf_io_worker to NULL ... Otherwise io_wq_worker_{running,sleeping}() may dereference an invalid pointer (in future). Currently all users of create_io_thread() are fine and get task->pf_io_worker = NULL implicitly from the wq_manager, which got it either from the userspace thread of the sq_thread, which explicitly reset it to NULL. I think it's safer to always reset it in order to avoid future problems. Fixes: 3bfe610669 ("io-wq: fork worker threads from original task") cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>	2021-04-25 10:29:03 -06:00
Linus Torvalds	0146da0d4c	- Fix ordering in the queued writer lock's slowpath. ... -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmCFOD4ACgkQEsHwGGHe VUrwChAAr3r3Qr60WDUVTtbx0TS+d7Rk+aq63DhN6PvFADMlZe3PfjRFnw9bamIO hgf/65+BsYPTbO8w9CdSdgrv00oVw0v1pbYVdIAJDBzzwrG489gjJxozrIgQHU+X ixpxnG7R8e4dZrA4Q/ip2EZYRwGfWyO1H2Z1K6/W/sSk3HGi2EKa3+4BGBIhVtnI K81ckR59H+/+Fi8D3PZozK0HmC1XXKuoA5I0Yx0mgivy6i1XQ6UPohgWLXW76uae JtvbC2E9APhlYaRlIzdAAA7bx2REvyic6JjfTR515llIo3X2npVWlbusipjQdnOG enuFmHCCu49z9IAgGzI/ez+jEC41/SwJtma6lyDlcrW8j3Ovw5j6eMju14rrZD72 8wqFXll7eAoFNbln0H9xUwvOVVWeIvMbF0+WluFWMsX5nDY4XRnEtYa24XPdeOFA aDhtuSmyQzcLi/mzgOU9q3dg/VKPb4i9XROwaXtJXXD8GVzbN2i5yOMleLmfHJ0K e1o/qc4VFItF+nCyp0v+yqEB8sQ23zRWiuw7zE1PvolBsULp+gO1lmJIJvSwaGaB nKJ04k7AvdkK82926cjfnhC6TvsOdHMWsdFBq+J/01bSnFGXwtzSJ6qoFTCts3TX zi7E5u+TEDAa4EZ4eO4Ds0yaKdJ0tBncoKUDLkTg7M98dLqv+dI= =GDTe -----END PGP SIGNATURE----- Merge tag 'locking_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fix from Borislav Petkov: "Fix ordering in the queued writer lock's slowpath" * tag 'locking_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/qrwlock: Fix ordering in queued_write_lock_slowpath()	2021-04-25 09:10:10 -07:00
Linus Torvalds	682b26bd80	- Fix a typo in a macro ifdeffery. ... -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmCFNfAACgkQEsHwGGHe VUoebg//cZf3az92fY7OTPOvEZrE1PgZhSYWDnjt6++1LSzOowh2lIXobPXfrFtF UAVojnqNZMEvV2CbUtpXMI9WGXyi6JdpeFI40wpfFvX5EaZkMlKtTG8q7jmGzus1 akysbFmI3KwKT7ifu2Jmb7Olf4kaG+WfEP39E9s0TG20eCeduz4xSvfWo8OFesIY BZX1WC5xsdoCk2nlF2SQXqVr6tUxTrW5JumG2yS7cOzFEYTWODzza/BephmuMRgv /KeAEBPRzTY8mtdnERWaeH8cm2HvR6nlcblRYIL16B9StwFSPo1CMBV3FOd5gMhy l5JFR7j/AiL4LSaAOUbZffoIGl03nrTnVt+/GTGCbj4dScIVM5Cscx2exJx9oWuO vqF6LOq7yILK/OmN1/d+uiBSmBiQ1i9tuuKl1o8CWVRmh2WaDPh0VPnVAtrfqrKZ lTb6r8rFGywn7Zczdx7imjgxEYRJFqZXeR9Vr390Q7qc4uyNUrBOQWEWNeU+PbJc dJT0enVgUooNjjw/1piEyJ8e851JGOdYFmhBV92mdD7htCceJEBHwqI/hVY4OPzE BVxnojxrosEwBYqkA3ysdjzqWk7h1dhiRY4E9HD8Rc3hL2TqH1qlzfvjCBsZdjPS IqOlXUCsekBaGTNpAWa63slpfybwjt/tTW5m3NaEQ88Yvt9Ikj0= =D4bF -----END PGP SIGNATURE----- Merge tag 'sched_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Borislav Petkov: "Fix a typo in a macro ifdeffery" * tag 'sched_urgent_for_v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: preempt/dynamic: Fix typo in macro conditional statement	2021-04-25 09:08:19 -07:00
Alexey Dobriyan	0e0345b77a	kbuild: redo fake deps at include/config/*.h ... Make include/config/foo/bar.h fake deps files generation simpler. * delete .h suffix those aren't header files, shorten filenames, * delete tolower() Linux filesystems can deal with both upper and lowercase filenames very well, * put everything in 1 directory Presumably 'mkdir -p' split is from dark times when filesystems handled huge directories badly, disks were round adding to seek times. x86_64 allmodconfig lists 12364 files in include/config. ../obj/include/config/ ├── 104_QUAD_8 ├── 60XX_WDT ├── 64BIT ... ├── ZSWAP_DEFAULT_ON ├── ZSWAP_ZPOOL_DEFAULT └── ZSWAP_ZPOOL_DEFAULT_ZBUD 0 directories, 12364 files Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>	2021-04-25 05:26:10 +09:00
Thomas Gleixner	765822e156	irqchip updates for Linux 5.13 ... New HW support: - New driver for the Nuvoton WPCM450 interrupt controller - New driver for the IDT 79rc3243x interrupt controller - Add support for interrupt trigger configuration to the MStar irqchip - Add more external interrupt support to the STM32 irqchip - Add new compatible strings for QCOM SC7280 to the qcom-pdc binding Fixes and cleanups: - Drop irq_create_strict_mappings() and irq_create_identity_mapping() from the irqdomain API, with cleanups in a couple of drivers - Fix nested NMI issue with spurious interrupts on GICv3 - Don't allow GICv4.1 vSGIs when the CPU doesn't support them - Various cleanups and minor fixes -----BEGIN PGP SIGNATURE----- iQJDBAABCgAtFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAmCD5kwPHG1hekBrZXJu ZWwub3JnAAoJECPQ0LrRPXpDCWsQAL5yHXtApf4l3F0W99SJIooumrQh3UR6nENG 2WVR66g+MiuZ/JQcHAojdLQ6W6K9W8eTcY3hRNFCqlI1lrKffz6ovstuYg3Wphog JX1gQYcpqt67WYtb/TVw3JM5D3NLU4XKPKZPhRzSHv5G9utI2QeAv13EBcPoHxZd UBRAEdUrv90KIFDe2CxWo8B5ra07xfgOpDvlYYKlee+jQLtf6i4Kj7Tm0XoK3hoW w0Mo//5r2SggdXfFLW1sm0BGs0bpJMSNixKCZWRfXbnZLAYIaBynSoLT9XoYT/uC FDegtFZ9IG/5NXJ1d3Yl0RjsPp+iPUOOTq/5gAoXI0hRCLZ1f8G1IuDEoIf8ElOg kxA1JpYE1fewxNt7oh48BAs3Qa3fdjJ1+k6gFlau4ctJBjxTHMz7v7lr7PmjhPz7 HgcmzFCu9Wb8pj1IDHMINkOMmAiQhgr3N0WK372wQyNE8Z8iB0ZeCYX9jAV5YTK6 eQdsDgNW18rv1ks/f7vzJw4EHRUM2tzSYimgf3oW+EJq6xKacMHfDMp9ERtHcnfJ +4CCEEafrSOj/KsNpNnA7Bq3Qjh+RdRXDtCPsoGQ3LS1L5/JOaUoSmrCkWNNfXuZ kUKTrNzopmMPvvwx6Q1YUypMbKCloNvlO3IgKalKNVP5drWA184abOIU2MGp+yI1 LAA8SFYU =RqVj -----END PGP SIGNATURE----- Merge tag 'irqchip-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull irqchip and irqdomain updates from Marc Zyngier: New HW support: - New driver for the Nuvoton WPCM450 interrupt controller - New driver for the IDT 79rc3243x interrupt controller - Add support for interrupt trigger configuration to the MStar irqchip - Add more external interrupt support to the STM32 irqchip - Add new compatible strings for QCOM SC7280 to the qcom-pdc binding Fixes and cleanups: - Drop irq_create_strict_mappings() and irq_create_identity_mapping() from the irqdomain API, with cleanups in a couple of drivers - Fix nested NMI issue with spurious interrupts on GICv3 - Don't allow GICv4.1 vSGIs when the CPU doesn't support them - Various cleanups and minor fixes Link: https://lore.kernel.org/r/20210424094640.1731920-1-maz@kernel.org	2021-04-24 21:18:44 +02:00