Some static call declarations are going to be needed on low level header
files. Move the necessary material to the dedicated static call types
header to avoid inclusion dependency hell.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210118141223.123667-4-frederic@kernel.org
The description of the RT offset and the values for 'normal' tasks needs
update. Moreover there are DL tasks now.
task_prio() has to stay like it is to guarantee compatibility with the
/proc/<pid>/stat priority field:
# cat /proc/<pid>/stat | awk '{ print $18; }'
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210128131040.296856-4-dietmar.eggemann@arm.com
The only remaining use of MAX_USER_PRIO (and USER_PRIO) is the
SCALE_PRIO() definition in the PowerPC Cell architecture's Synergistic
Processor Unit (SPU) scheduler. TASK_USER_PRIO isn't used anymore.
Commit fe443ef2ac ("[POWERPC] spusched: Dynamic timeslicing for
SCHED_OTHER") copied SCALE_PRIO() from the task scheduler in v2.6.23.
Commit a4ec24b48d ("sched: tidy up SCHED_RR") removed it from the task
scheduler in v2.6.24.
Commit 3ee237dddc ("sched/prio: Add 3 macros of MAX_NICE, MIN_NICE and
NICE_WIDTH in prio.h") introduced NICE_WIDTH much later.
With:
MAX_USER_PRIO = USER_PRIO(MAX_PRIO)
= MAX_PRIO - MAX_RT_PRIO
MAX_PRIO = MAX_RT_PRIO + NICE_WIDTH
MAX_USER_PRIO = MAX_RT_PRIO + NICE_WIDTH - MAX_RT_PRIO
MAX_USER_PRIO = NICE_WIDTH
MAX_USER_PRIO can be replaced by NICE_WIDTH to be able to remove all the
{*_}USER_PRIO defines.
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210128131040.296856-3-dietmar.eggemann@arm.com
Commit d46523ea32 ("[PATCH] fix MAX_USER_RT_PRIO and MAX_RT_PRIO")
was introduced due to a a small time period in which the realtime patch
set was using different values for MAX_USER_RT_PRIO and MAX_RT_PRIO.
This is no longer true, i.e. now MAX_RT_PRIO == MAX_USER_RT_PRIO.
Get rid of MAX_USER_RT_PRIO and make everything use MAX_RT_PRIO
instead.
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210128131040.296856-2-dietmar.eggemann@arm.com
Commit "sched/topology: Make sched_init_numa() use a set for the
deduplicating sort" allocates 'i + nr_levels (level)' instead of
'i + nr_levels + 1' sched_domain_topology_level.
This led to an Oops (on Arm64 juno with CONFIG_SCHED_DEBUG):
sched_init_domains
build_sched_domains()
__free_domain_allocs()
__sdt_free() {
...
for_each_sd_topology(tl)
...
sd = *per_cpu_ptr(sdd->sd, j); <--
...
}
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: Barry Song <song.bao.hua@hisilicon.com>
Link: https://lkml.kernel.org/r/6000e39e-7d28-c360-9cd6-8798fd22a9bf@arm.com
Reduce rbtree boiler plate by using the new helpers.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Reduce rbtree boiler plate by using the new helpers.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Reduce rbtree boilerplate by using the new helpers.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Reduce rbtree boiler plate by using the new helpers.
One noteworthy change is unification of the various (partial) compare
functions. We construct a subtree match by forcing the sub-order to
always match, see __group_cmp().
Due to 'const' we had to touch cgroup_id().
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Reduce rbtree boiler plate by using the new helpers.
Make rb_add_cached() / rb_erase_cached() return a pointer to the
leftmost node to aid in updating additional state.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Reduce rbtree boiler plate by using the new helper function.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
I've always been bothered by the endless (fragile) boilerplate for
rbtree, and I recently wrote some rbtree helpers for objtool and
figured I should lift them into the kernel and use them more widely.
Provide:
partial-order; less() based:
- rb_add(): add a new entry to the rbtree
- rb_add_cached(): like rb_add(), but for a rb_root_cached
total-order; cmp() based:
- rb_find(): find an entry in an rbtree
- rb_find_add(): find an entry, and add if not found
- rb_find_first(): find the first (leftmost) matching entry
- rb_next_match(): continue from rb_find_first()
- rb_for_each(): iterate a sub-tree using the previous two
Inlining and constant propagation should see the compiler inline the
whole thing, including the various compare functions.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Michel Lespinasse <walken@google.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Both select_idle_core() and select_idle_cpu() do a loop over the same
cpumask. Observe that by clearing the already visited CPUs, we can
fold the iteration and iterate a core at a time.
All we need to do is remember any non-idle CPU we encountered while
scanning for an idle core. This way we'll only iterate every CPU once.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210127135203.19633-5-mgorman@techsingularity.net
In order to make the next patch more readable, and to quantify the
actual effectiveness of this pass, start by removing it.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210125085909.4600-4-mgorman@techsingularity.net
Pull LED fix from Pavel Machek:
"One-liner fixing a build problem"
* 'for-rc8-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: rt8515: add V4L2_FLASH_LED_CLASS dependency
- Fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
- Use pkg-config for scripts/sign-file.c CFLAGS
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Merge tag 'kbuild-fixes-v5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
- Use pkg-config for scripts/sign-file.c CFLAGS
* tag 'kbuild-fixes-v5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
scripts: set proper OpenSSL include dir also for sign-file
sparc: remove wrong comment from arch/sparc/include/asm/Kbuild
kbuild: fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64
- A fix for the fix to disable CET instrumentation generation for kernel code.
We forgot 32-bit, which we seem to do very often nowadays.
- A Xen PV fix to irqdomain init ordering.
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Merge tag 'x86_urgent_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"I kinda knew while typing 'I hope this is the last batch of x86/urgent
updates' last week, Murphy was reading too and uttered 'Hold my
beer!'.
So here's more fixes... Thanks Murphy.
Anyway, three more x86/urgent fixes for 5.11 final. We should be
finally ready (famous last words). :-)
- An SGX use after free fix
- A fix for the fix to disable CET instrumentation generation for
kernel code. We forgot 32-bit, which we seem to do very often
nowadays
- A Xen PV fix to irqdomain init ordering"
* tag 'x86_urgent_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pci: Create PCI/MSI irqdomain after x86_init.pci.arch_init()
x86/build: Disable CET instrumentation in the kernel for 32-bit too
x86/sgx: Maintain encl->refcount for each encl->mm_list entry
The leds-rt8515 driver can optionall use the v4l2 flash led class,
but it causes a link error when that class is in a loadable module
and the rt8515 driver itself is built-in:
ld.lld: error: undefined symbol: v4l2_flash_init
>>> referenced by leds-rt8515.c
>>> leds/flash/leds-rt8515.o:(rt8515_probe) in archive
drivers/built-in.a
Adding 'depends on V4L2_FLASH_LED_CLASS' in Kconfig would avoid that,
but it would make it impossible to use the driver without the
v4l2 support.
Add the same dependency that the other users of this class have
instead, which just prevents the broken configuration.
Fixes: e1c6edcbea ("leds: rt8515: Add Richtek RT8515 LED driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
These are NOT exported to userspace.
The headers listed in arch/sparc/include/uapi/asm/Kbuild are exported.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
out the correct rate to use. This fixes displays running 4k@60Hz and
some other resolutions that haven't been exercised and fully understood
until now.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One small fix for the Allwinner clk driver so that display clks figure
out the correct rate to use.
This fixes displays running 4k@60Hz and some other resolutions that
haven't been exercised and fully understood until now"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: sunxi-ng: mp: fix parent rate change flag check
One fix for scsi_debug that fixes a memory leak on module removal.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"One fix for scsi_debug that fixes a memory leak on module removal"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_debug: Fix a memory leak
Pull cgroup fixes from Tejun Heo:
"Two cgroup fixes:
- fix a NULL deref when trying to poll PSI in the root cgroup
- fix confusing controller parsing corner case when mounting cgroup
v1 hierarchies
And doc / maintainer file updates"
* 'for-5.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: update PSI file description in docs
cgroup: fix psi monitor for root cgroup
MAINTAINERS: Update my email address
MAINTAINERS: Remove stale URLs for cpuset
cgroup-v1: add disabled controller check in cgroup1_parse_param()
Merge fixes from Andrew Morton:
"6 patches.
Subsystems affected by this patch series: mm/pagemap, scripts,
MAINTAINERS, and h8300"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
h8300: fix PREEMPTION build, TI_PRE_COUNT undefined
MAINTAINERS: add Andrey Konovalov to KASAN reviewers
MAINTAINERS: update Andrey Konovalov's email address
MAINTAINERS: update KASAN file list
scripts/recordmcount.pl: support big endian for ARCH sh
m68k: make __pfn_to_phys() and __phys_to_pfn() available for !MMU
Pull i2c fix from Wolfram Sang:
"One more I2C driver bugfix"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: stm32f7: fix configuration of the digital filter
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Merge tag 'for-5.11-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"A regression fix caused by a refactoring in 5.11.
A corrupted superblock wouldn't be detected by checksum verification
due to wrongly placed initialization of the checksum length, thus
making memcmp always work"
* tag 'for-5.11-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: initialize fs_info::csum_size earlier in open_ctree
Fix a build error for undefined 'TI_PRE_COUNT' by adding it to
asm-offsets.c.
h8300-linux-ld: arch/h8300/kernel/entry.o: in function `resume_kernel': (.text+0x29a): undefined reference to `TI_PRE_COUNT'
Link: https://lkml.kernel.org/r/20210212021650.22740-1-rdunlap@infradead.org
Fixes: df2078b8da ("h8300: Low level entry")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The kernel test robot reported the following issue:
CC [M] drivers/soc/litex/litex_soc_ctrl.o
sh4-linux-objcopy: Unable to change endianness of input file(s)
sh4-linux-ld: cannot find drivers/soc/litex/.tmp_gl_litex_soc_ctrl.o: No such file or directory
sh4-linux-objcopy: 'drivers/soc/litex/.tmp_mx_litex_soc_ctrl.o': No such file
The problem is that the format of input file is elf32-shbig-linux, but
sh4-linux-objcopy wants to output a file which format is elf32-sh-linux:
$ sh4-linux-objdump -d drivers/soc/litex/litex_soc_ctrl.o | grep format
drivers/soc/litex/litex_soc_ctrl.o: file format elf32-shbig-linux
Link: https://lkml.kernel.org/r/20210210150435.2171567-1-rong.a.chen@intel.com
Link: https://lore.kernel.org/linux-mm/202101261118.GbbYSlHu-lkp@intel.com
Signed-off-by: Rong Chen <rong.a.chen@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Cc: Rich Felker <dalias@libc.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Recent changes that obsoleted DISCONTIGMEM on m68k switched the MMU
variant to use generic definitions of __pfn_to_phys() and __phys_to_pfn(),
but missed the !MMU variant which caused a build failure:
drivers/media/common/videobuf2/videobuf2-dma-contig.c: In function 'vb2_dc_get_userptr':
drivers/media/common/videobuf2/videobuf2-dma-contig.c:509:5: error: implicit declaration of function '__pfn_to_phys' [-Werror=implicit-function-declaration]
509 | __pfn_to_phys(nums[0]), size, buf->dma_dir, 0);
| ^~~~~~~~~~~~~
cc1: some warnings being treated as errors
Enable __pfn_to_phys() and __phys_to_pfn() on !MMU builds.
Link: https://lkml.kernel.org/r/20210211232202.GS299309@linux.ibm.com
Fixes: 4bfc848e09 ("m68k/mm: enable use of generic memory_model.h for !DISCONTIGMEM")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag '5.11-rc7-smb3-github' of git://github.com/smfrench/smb3-kernel
Pull cifs fixes from Steve French:
"Four small smb3 fixes to the new mount API (including a particularly
important one for DFS links).
These were found in testing this week of additional DFS scenarios, and
a user testing of an apache container problem"
* tag '5.11-rc7-smb3-github' of git://github.com/smfrench/smb3-kernel:
cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.
cifs: In the new mount api we get the full devname as source=
cifs: do not disable noperm if multiuser mount option is not provided
cifs: fix dfs-links
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Merge tag 'io_uring-5.11-2021-02-12' of git://git.kernel.dk/linux-block
Pull io_uring fix from Jens Axboe:
"Revert of a patch from this release that caused a regression"
* tag 'io_uring-5.11-2021-02-12' of git://git.kernel.dk/linux-block:
Revert "io_uring: don't take fs for recvmsg/sendmsg"
ttm:
- page pool regression fix.
dp_mst:
- Don't report un-attached ports as connected
amdgpu:
- Blank screen fix
i915:
- Ensure Type-C FIA is powered when initializing
- Fix overlay frontbuffer tracking
sun4i:
- tcon1 sync polarity fix
- Always set HDMI clock rate
- Fix H6 HDMI PHY config
- Fix H6 max frequency
vc4:
- Fix buffer overflow
xlnx:
- Fix memory leak
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Merge tag 'drm-fixes-2021-02-12' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular fixes for final, there is a ttm regression fix, dp-mst fix,
one amdgpu revert, two i915 fixes, and some misc fixes for sun4i,
xlnx, and vc4.
All pretty quiet and don't think we have any known outstanding
regressions.
ttm:
- page pool regression fix.
dp_mst:
- don't report un-attached ports as connected
amdgpu:
- blank screen fix
i915:
- ensure Type-C FIA is powered when initializing
- fix overlay frontbuffer tracking
sun4i:
- tcon1 sync polarity fix
- always set HDMI clock rate
- fix H6 HDMI PHY config
- fix H6 max frequency
vc4:
- fix buffer overflow
xlnx:
- fix memory leak"
* tag 'drm-fixes-2021-02-12' of git://anongit.freedesktop.org/drm/drm:
drm/ttm: make sure pool pages are cleared
drm/sun4i: dw-hdmi: Fix max. frequency for H6
drm/sun4i: Fix H6 HDMI PHY configuration
drm/sun4i: dw-hdmi: always set clock rate
drm/sun4i: tcon: set sync polarity for tcon1 channel
drm/i915: Fix overlay frontbuffer tracking
Revert "drm/amd/display: Update NV1x SR latency values"
drm/i915/tgl+: Make sure TypeC FIA is powered up when initializing it
drm/dp_mst: Don't report ports connected if nothing is attached to them
drm/xlnx: fix kmemleak by sending vblank_event in atomic_disable
drm/vc4: hvs: Fix buffer overflow with the dlist handling
It was reported that if an trace event was larger than a page
and was filtered, that it caused memory corruption. The reason
is that filtered events first go into a buffer to test the filter
before being written into the ring buffer. Unfortunately,
this write did not check the size.
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Merge tag 'trace-v5.11-rc7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"Fix buffer overflow in trace event filter.
It was reported that if an trace event was larger than a page and was
filtered, that it caused memory corruption. The reason is that
filtered events first go into a buffer to test the filter before being
written into the ring buffer. Unfortunately, this write did not check
the size"
* tag 'trace-v5.11-rc7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Check length before giving out the filter buffer
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Merge tag 'for-linus-5.11-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"A single fix for an issue introduced this development cycle: when
running as a Xen guest on Arm systems the kernel will hang during
boot"
* tag 'for-linus-5.11-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
arm/xen: Don't probe xenbus as part of an early initcall
I have a single fix this week:
* The removal of the GPIO reset method for the Ethernet phy on the
HiFive Unleashed. This returns to relying on the bootloader's phy
reset sequence, which we'll have to cintune doing until we can sort
out how to get the Linux phy driver to perform the special reset
dance required for this phy.
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Merge tag 'riscv-for-linus-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fix from Palmer Dabbelt:
"A single fix this week: the removal of the GPIO reset method for the
Ethernet phy on the HiFive Unleashed.
This returns to relying on the bootloader's phy reset sequence, which
we'll have to continue doing until we can sort out how to get the
Linux phy driver to perform the special reset dance required for this
phy"
* tag 'riscv-for-linus-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
Revert "dts: phy: add GPIO number and active state used for phy reset"
write.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Catalin Marinas:
"Fix PTRACE_PEEKMTETAGS access to an mmapped region before the first
write"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mte: Allow PTRACE_PEEKMTETAGS access to the zero page
The ptrace(PTRACE_PEEKMTETAGS) implementation checks whether the user
page has valid tags (mapped with PROT_MTE) by testing the PG_mte_tagged
page flag. If this bit is cleared, ptrace(PTRACE_PEEKMTETAGS) returns
-EIO.
A newly created (PROT_MTE) mapping points to the zero page which had its
tags zeroed during cpu_enable_mte(). If there were no prior writes to
this mapping, ptrace(PTRACE_PEEKMTETAGS) fails with -EIO since the zero
page does not have the PG_mte_tagged flag set.
Set PG_mte_tagged on the zero page when its tags are cleared during
boot. In addition, to avoid ptrace(PTRACE_PEEKMTETAGS) succeeding on
!PROT_MTE mappings pointing to the zero page, change the
__access_remote_tags() check to (vm_flags & VM_MTE) instead of
PG_mte_tagged.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: 34bfeea4a9 ("arm64: mte: Clear the tags when a page is mapped in user-space with PROT_MTE")
Cc: <stable@vger.kernel.org> # 5.10.x
Cc: Will Deacon <will@kernel.org>
Reported-by: Luis Machado <luis.machado@linaro.org>
Tested-by: Luis Machado <luis.machado@linaro.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210210180316.23654-1-catalin.marinas@arm.com
User reported that btrfs-progs misc-tests/028-superblock-recover fails:
[TEST/misc] 028-superblock-recover
unexpected success: mounted fs with corrupted superblock
test failed for case 028-superblock-recover
The test case expects that a broken image with bad superblock will be
rejected to be mounted. However, the test image just passed csum check
of superblock and was successfully mounted.
Commit 55fc29bed8 ("btrfs: use cached value of fs_info::csum_size
everywhere") replaces all calls to btrfs_super_csum_size by
fs_info::csum_size. The calls include the place where fs_info->csum_size
is not initialized. So btrfs_check_super_csum() passes because memcmp()
with len 0 always returns 0.
Fix it by caching csum size in btrfs_fs_info::csum_size once we know the
csum type in superblock is valid in open_ctree().
Link: https://github.com/kdave/btrfs-progs/issues/250
Fixes: 55fc29bed8 ("btrfs: use cached value of fs_info::csum_size everywhere")
Signed-off-by: Su Yue <l@damenly.su>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The digital filter related computation are present in the driver
however the programming of the filter within the IP is missing.
The maximum value for the DNF is wrong and should be 15 instead of 16.
Fixes: aeb068c572 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
drm/i915 fixes for v5.11 final:
- Ensure Type-C FIA is powered when initializing
- Fix overlay frontbuffer tracking
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87r1lnc78t.fsf@intel.com
One fix for a regression seen in io_uring, introduced by our support for KUAP
(Kernel User Access Prevention) with the Hash MMU.
Thanks to: Aneesh Kumar K.V, Zorro Lang.
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Merge tag 'powerpc-5.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"One fix for a regression seen in io_uring, introduced by our support
for KUAP (Kernel User Access Prevention) with the Hash MMU.
Thanks to Aneesh Kumar K.V, and Zorro Lang"
* tag 'powerpc-5.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/kuap: Allow kernel thread to access userspace after kthread_use_mm
When filters are used by trace events, a page is allocated on each CPU and
used to copy the trace event fields to this page before writing to the ring
buffer. The reason to use the filter and not write directly into the ring
buffer is because a filter may discard the event and there's more overhead
on discarding from the ring buffer than the extra copy.
The problem here is that there is no check against the size being allocated
when using this page. If an event asks for more than a page size while being
filtered, it will get only a page, leading to the caller writing more that
what was allocated.
Check the length of the request, and if it is more than PAGE_SIZE minus the
header default back to allocating from the ring buffer directly. The ring
buffer may reject the event if its too big anyway, but it wont overflow.
Link: https://lore.kernel.org/ath10k/1612839593-2308-1-git-send-email-wgong@codeaurora.org/
Cc: stable@vger.kernel.org
Fixes: 0fc1b09ff1 ("tracing: Use temp buffer when filtering events")
Reported-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
