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7416 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
0f979d815c |
Kbuild updates for v5.13 (2nd)
- Convert sh and sparc to use generic shell scripts to generate the
syscall headers
- refactor .gitignore files
- Update kernel/config_data.gz only when the content of the .config is
really changed, which avoids the unneeded re-link of vmlinux
- move "remove stale files" workarounds to scripts/remove-stale-files
- suppress unused-but-set-variable warnings by default for Clang as well
- fix locale setting LANG=C to LC_ALL=C
- improve 'make distclean'
- always keep intermediate objects from scripts/link-vmlinux.sh
- move IF_ENABLED out of <linux/kconfig.h> to make it self-contained
- misc cleanups
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Merge tag 'kbuild-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- Convert sh and sparc to use generic shell scripts to generate the
syscall headers
- refactor .gitignore files
- Update kernel/config_data.gz only when the content of the .config
is really changed, which avoids the unneeded re-link of vmlinux
- move "remove stale files" workarounds to scripts/remove-stale-files
- suppress unused-but-set-variable warnings by default for Clang
as well
- fix locale setting LANG=C to LC_ALL=C
- improve 'make distclean'
- always keep intermediate objects from scripts/link-vmlinux.sh
- move IF_ENABLED out of <linux/kconfig.h> to make it self-contained
- misc cleanups
* tag 'kbuild-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>
kbuild: Don't remove link-vmlinux temporary files on exit/signal
kbuild: remove the unneeded comments for external module builds
kbuild: make distclean remove tag files in sub-directories
kbuild: make distclean work against $(objtree) instead of $(srctree)
kbuild: refactor modname-multi by using suffix-search
kbuild: refactor fdtoverlay rule
kbuild: parameterize the .o part of suffix-search
arch: use cross_compiling to check whether it is a cross build or not
kbuild: remove ARCH=sh64 support from top Makefile
.gitignore: prefix local generated files with a slash
kbuild: replace LANG=C with LC_ALL=C
Makefile: Move -Wno-unused-but-set-variable out of GCC only block
kbuild: add a script to remove stale generated files
kbuild: update config_data.gz only when the content of .config is changed
.gitignore: ignore only top-level modules.builtin
.gitignore: move tags and TAGS close to other tag files
kernel/.gitgnore: remove stale timeconst.h and hz.bc
usr/include: refactor .gitignore
genksyms: fix stale comment
...
|
||
|
Linus Torvalds
|
fc858a5231 |
Networking fixes for 5.13-rc1, including fixes from bpf, can
and netfilter trees. Self-contained fixes, nothing risky.
Current release - new code bugs:
- dsa: ksz: fix a few bugs found by static-checker in the new driver
- stmmac: fix frame preemption handshake not triggering after
interface restart
Previous releases - regressions:
- make nla_strcmp handle more then one trailing null character
- fix stack OOB reads while fragmenting IPv4 packets in openvswitch
and net/sched
- sctp: do asoc update earlier in sctp_sf_do_dupcook_a
- sctp: delay auto_asconf init until binding the first addr
- stmmac: clear receive all(RA) bit when promiscuous mode is off
- can: mcp251x: fix resume from sleep before interface was brought up
Previous releases - always broken:
- bpf: fix leakage of uninitialized bpf stack under speculation
- bpf: fix masking negation logic upon negative dst register
- netfilter: don't assume that skb_header_pointer() will never fail
- only allow init netns to set default tcp cong to a restricted algo
- xsk: fix xp_aligned_validate_desc() when len == chunk_size to
avoid false positive errors
- ethtool: fix missing NLM_F_MULTI flag when dumping
- can: m_can: m_can_tx_work_queue(): fix tx_skb race condition
- sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b
- bridge: fix NULL-deref caused by a races between assigning
rx_handler_data and setting the IFF_BRIDGE_PORT bit
Latecomer:
- seg6: add counters support for SRv6 Behaviors
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.13-rc1, including fixes from bpf, can and
netfilter trees. Self-contained fixes, nothing risky.
Current release - new code bugs:
- dsa: ksz: fix a few bugs found by static-checker in the new driver
- stmmac: fix frame preemption handshake not triggering after
interface restart
Previous releases - regressions:
- make nla_strcmp handle more then one trailing null character
- fix stack OOB reads while fragmenting IPv4 packets in openvswitch
and net/sched
- sctp: do asoc update earlier in sctp_sf_do_dupcook_a
- sctp: delay auto_asconf init until binding the first addr
- stmmac: clear receive all(RA) bit when promiscuous mode is off
- can: mcp251x: fix resume from sleep before interface was brought up
Previous releases - always broken:
- bpf: fix leakage of uninitialized bpf stack under speculation
- bpf: fix masking negation logic upon negative dst register
- netfilter: don't assume that skb_header_pointer() will never fail
- only allow init netns to set default tcp cong to a restricted algo
- xsk: fix xp_aligned_validate_desc() when len == chunk_size to avoid
false positive errors
- ethtool: fix missing NLM_F_MULTI flag when dumping
- can: m_can: m_can_tx_work_queue(): fix tx_skb race condition
- sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b
- bridge: fix NULL-deref caused by a races between assigning
rx_handler_data and setting the IFF_BRIDGE_PORT bit
Latecomer:
- seg6: add counters support for SRv6 Behaviors"
* tag 'net-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
atm: firestream: Use fallthrough pseudo-keyword
net: stmmac: Do not enable RX FIFO overflow interrupts
mptcp: fix splat when closing unaccepted socket
i40e: Remove LLDP frame filters
i40e: Fix PHY type identifiers for 2.5G and 5G adapters
i40e: fix the restart auto-negotiation after FEC modified
i40e: Fix use-after-free in i40e_client_subtask()
i40e: fix broken XDP support
netfilter: nftables: avoid potential overflows on 32bit arches
netfilter: nftables: avoid overflows in nft_hash_buckets()
tcp: Specify cmsgbuf is user pointer for receive zerocopy.
mlxsw: spectrum_mr: Update egress RIF list before route's action
net: ipa: fix inter-EE IRQ register definitions
can: m_can: m_can_tx_work_queue(): fix tx_skb race condition
can: mcp251x: fix resume from sleep before interface was brought up
can: mcp251xfd: mcp251xfd_probe(): add missing can_rx_offload_del() in error path
can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe
netfilter: nftables: Fix a memleak from userdata error path in new objects
netfilter: remove BUG_ON() after skb_header_pointer()
netfilter: nfnetlink_osf: Fix a missing skb_header_pointer() NULL check
...
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Linus Torvalds
|
a48b0872e6 |
Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton: "This is everything else from -mm for this merge window. 90 patches. Subsystems affected by this patch series: mm (cleanups and slub), alpha, procfs, sysctl, misc, core-kernel, bitmap, lib, compat, checkpatch, epoll, isofs, nilfs2, hpfs, exit, fork, kexec, gcov, panic, delayacct, gdb, resource, selftests, async, initramfs, ipc, drivers/char, and spelling" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (90 commits) mm: fix typos in comments mm: fix typos in comments treewide: remove editor modelines and cruft ipc/sem.c: spelling fix fs: fat: fix spelling typo of values kernel/sys.c: fix typo kernel/up.c: fix typo kernel/user_namespace.c: fix typos kernel/umh.c: fix some spelling mistakes include/linux/pgtable.h: few spelling fixes mm/slab.c: fix spelling mistake "disired" -> "desired" scripts/spelling.txt: add "overflw" scripts/spelling.txt: Add "diabled" typo scripts/spelling.txt: add "overlfow" arm: print alloc free paths for address in registers mm/vmalloc: remove vwrite() mm: remove xlate_dev_kmem_ptr() drivers/char: remove /dev/kmem for good mm: fix some typos and code style problems ipc/sem.c: mundane typo fixes ... |
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Zhang Yunkai
|
9c39c6ffe0 |
selftests: remove duplicate include
'assert.h' included in 'sparsebit.c' is duplicated. It is also included in the 161th line. 'string.h' included in 'mincore_selftest.c' is duplicated. It is also included in the 15th line. 'sched.h' included in 'tlbie_test.c' is duplicated. It is also included in the 33th line. Link: https://lkml.kernel.org/r/20210316073336.426255-1-zhang.yunkai@zte.com.cn Signed-off-by: Zhang Yunkai <zhang.yunkai@zte.com.cn> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Davidlohr Bueso
|
1e3b918d1d |
kselftest: introduce new epoll test case
Patch series "fs/epoll: restore user-visible behavior upon event ready".
This series tries to address a change in user visible behavior, reported
in https://bugzilla.kernel.org/show_bug.cgi?id=208943.
Epoll does not report an event to all the threads running epoll_wait()
on the same epoll descriptor. Unsurprisingly, this was bisected back to
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Alexey Dobriyan
|
268af17ada |
selftests: proc: test subset=pid
Test that /proc instance mounted with mount -t proc -o subset=pid contains only ".", "..", "self", "thread-self" and pid directories. Note: Currently "subset=pid" doesn't return "." and ".." via readdir. This must be a bug. Link: https://lkml.kernel.org/r/YFYZZ7WGaZlsnChS@localhost.localdomain Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Alexey Gladkov <gladkov.alexey@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Alexey Dobriyan
|
d4455faccd |
proc: mandate ->proc_lseek in "struct proc_ops"
Now that proc_ops are separate from file_operations and other operations it easy to check all instances to have ->proc_lseek hook and remove check in main code. Note: nonseekable_open() files naturally don't require ->proc_lseek. Garbage collect pde_lseek() function. [adobriyan@gmail.com: smoke test lseek()] Link: https://lkml.kernel.org/r/YG4OIhChOrVTPgdN@localhost.localdomain Link: https://lkml.kernel.org/r/YFYX0Bzwxlc7aBa/@localhost.localdomain Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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8404c9fbc8 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
"The remainder of the main mm/ queue.
143 patches.
Subsystems affected by this patch series (all mm): pagecache, hugetlb,
userfaultfd, vmscan, compaction, migration, cma, ksm, vmstat, mmap,
kconfig, util, memory-hotplug, zswap, zsmalloc, highmem, cleanups, and
kfence"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (143 commits)
kfence: use power-efficient work queue to run delayed work
kfence: maximize allocation wait timeout duration
kfence: await for allocation using wait_event
kfence: zero guard page after out-of-bounds access
mm/process_vm_access.c: remove duplicate include
mm/mempool: minor coding style tweaks
mm/highmem.c: fix coding style issue
btrfs: use memzero_page() instead of open coded kmap pattern
iov_iter: lift memzero_page() to highmem.h
mm/zsmalloc: use BUG_ON instead of if condition followed by BUG.
mm/zswap.c: switch from strlcpy to strscpy
arm64/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
x86/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
mm,memory_hotplug: add kernel boot option to enable memmap_on_memory
acpi,memhotplug: enable MHP_MEMMAP_ON_MEMORY when supported
mm,memory_hotplug: allocate memmap from the added memory range
mm,memory_hotplug: factor out adjusting present pages into adjust_present_page_count()
mm,memory_hotplug: relax fully spanned sections check
drivers/base/memory: introduce memory_block_{online,offline}
mm/memory_hotplug: remove broken locking of zone PCP structures during hot remove
...
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Linus Torvalds
|
dd8c86c6dd |
Updates for ktest:
- Added a KTEST section in the MAINTAINERS file - Included John Hawley as a co-maintainer - Add an example config that would work with VMware workstation guests - Cleanups to the code -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYJGRUxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qiYCAQDeVilGphCfYoYvGCo1f8EDeHHprj7t tsg+YaMkpU++RAEA66I3gke3TRKwjzolqSsuuHo5EZnEJWFWQwE1JaGshQo= =2xs+ -----END PGP SIGNATURE----- Merge tag 'ktest-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest Pull ktest updates from Steven Rostedt: - Added a KTEST section in the MAINTAINERS file - Included John Hawley as a co-maintainer - Add an example config that would work with VMware workstation guests - Cleanups to the code * tag 'ktest-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest: ktest: Add KTEST section to MAINTAINERS file ktest: Re-arrange the code blocks for better discoverability ktest: Further consistency cleanups ktest: Fixing indentation to match expected pattern ktest: Adding editor hints to improve consistency ktest: Add example config for using VMware VMs ktest: Minor cleanup with uninitialized variable $build_options |
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Pavel Tatashin
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e44605a8b1 |
selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages
When pages are pinned they can be faulted in userland and migrated, and they can be faulted right in kernel without migration. In either case, the pinned pages must end-up being pinnable (not movable). Add a new test to gup_test, to help verify that the gup/pup (get_user_pages() / pin_user_pages()) behavior with respect to pinnable and movable pages is reasonable and correct. Specifically, provide a way to: 1) Verify that only "pinnable" pages are pinned. This is checked automatically for you. 2) Verify that gup/pup performance is reasonable. This requires comparing benchmarks between doing gup/pup on pages that have been pre-faulted in from user space, vs. doing gup/pup on pages that are not faulted in until gup/pup time (via FOLL_TOUCH). This decision is controlled with the new -z command line option. Link: https://lkml.kernel.org/r/20210215161349.246722-15-pasha.tatashin@soleen.com Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sasha Levin <sashal@kernel.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Tyler Hicks <tyhicks@linux.microsoft.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Pavel Tatashin
|
79dbf135e2 |
selftests/vm: gup_test: fix test flag
In gup_test both gup_flags and test_flags use the same flags field. This is broken. Farther, in the actual gup_test.c all the passed gup_flags are erased and unconditionally replaced with FOLL_WRITE. Which means that test_flags are ignored, and code like this always performs pin dump test: 155 if (gup->flags & GUP_TEST_FLAG_DUMP_PAGES_USE_PIN) 156 nr = pin_user_pages(addr, nr, gup->flags, 157 pages + i, NULL); 158 else 159 nr = get_user_pages(addr, nr, gup->flags, 160 pages + i, NULL); 161 break; Add a new test_flags field, to allow raw gup_flags to work. Add a new subcommand for DUMP_USER_PAGES_TEST to specify that pin test should be performed. Remove unconditional overwriting of gup_flags via FOLL_WRITE. But, preserve the previous behaviour where FOLL_WRITE was the default flag, and add a new option "-W" to unset FOLL_WRITE. Rename flags with gup_flags. With the fix, dump works like this: root@virtme:/# gup_test -c ---- page #0, starting from user virt addr: 0x7f8acb9e4000 page:00000000d3d2ee27 refcount:2 mapcount:1 mapping:0000000000000000 index:0x0 pfn:0x100bcf anon flags: 0x300000000080016(referenced|uptodate|lru|swapbacked) raw: 0300000000080016 ffffd0e204021608 ffffd0e208df2e88 ffff8ea04243ec61 raw: 0000000000000000 0000000000000000 0000000200000000 0000000000000000 page dumped because: gup_test: dump_pages() test DUMP_USER_PAGES_TEST: done root@virtme:/# gup_test -c -p ---- page #0, starting from user virt addr: 0x7fd19701b000 page:00000000baed3c7d refcount:1025 mapcount:1 mapping:0000000000000000 index:0x0 pfn:0x108008 anon flags: 0x300000000080014(uptodate|lru|swapbacked) raw: 0300000000080014 ffffd0e204200188 ffffd0e205e09088 ffff8ea04243ee71 raw: 0000000000000000 0000000000000000 0000040100000000 0000000000000000 page dumped because: gup_test: dump_pages() test DUMP_USER_PAGES_TEST: done Refcount shows the difference between pin vs no-pin case. Also change type of nr from int to long, as it counts number of pages. Link: https://lkml.kernel.org/r/20210215161349.246722-14-pasha.tatashin@soleen.com Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sasha Levin <sashal@kernel.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Tyler Hicks <tyhicks@linux.microsoft.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Axel Rasmussen
|
f0fa943309 |
userfaultfd/selftests: add test exercising minor fault handling
Fix a dormant bug in userfaultfd_events_test(), where we did `return faulting_process(0)` instead of `exit(faulting_process(0))`. This caused the forked process to keep running, trying to execute any further test cases after the events test in parallel with the "real" process. Add a simple test case which exercises minor faults. In short, it does the following: 1. "Sets up" an area (area_dst) and a second shared mapping to the same underlying pages (area_dst_alias). 2. Register one of these areas with userfaultfd, in minor fault mode. 3. Start a second thread to handle any minor faults. 4. Populate the underlying pages with the non-UFFD-registered side of the mapping. Basically, memset() each page with some arbitrary contents. 5. Then, using the UFFD-registered mapping, read all of the page contents, asserting that the contents match expectations (we expect the minor fault handling thread can modify the page contents before resolving the fault). The minor fault handling thread, upon receiving an event, flips all the bits (~) in that page, just to prove that it can modify it in some arbitrary way. Then it issues a UFFDIO_CONTINUE ioctl, to setup the mapping and resolve the fault. The reading thread should wake up and see this modification. Currently the minor fault test is only enabled in hugetlb_shared mode, as this is the only configuration the kernel feature supports. Link: https://lkml.kernel.org/r/20210301222728.176417-7-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Adam Ruprecht <ruprecht@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Cannon Matthews <cannonmatthews@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: David Rientjes <rientjes@google.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Lokesh Gidra <lokeshgidra@google.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Michal Koutn" <mkoutny@suse.com> Cc: Michel Lespinasse <walken@google.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Mina Almasry <almasrymina@google.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oliver Upton <oupton@google.com> Cc: Shaohua Li <shli@fb.com> Cc: Shawn Anastasio <shawn@anastas.io> Cc: Steven Price <steven.price@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Zi Yan
|
fbe37501b2 |
mm: huge_memory: debugfs for file-backed THP split
Further extend <debugfs>/split_huge_pages to accept "<path>,<pgoff_start>,<pgoff_end>" for file-backed THP split tests since tmpfs may have file backed by THP that mapped nowhere. Update selftest program to test file-backed THP split too. Link: https://lkml.kernel.org/r/20210331235309.332292-2-zi.yan@sent.com Signed-off-by: Zi Yan <ziy@nvidia.com> Suggested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Yang Shi <shy828301@gmail.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Shuah Khan <shuah@kernel.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mika Penttila <mika.penttila@nextfour.com> Cc: David Rientjes <rientjes@google.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Zi Yan
|
fa6c02315f |
mm: huge_memory: a new debugfs interface for splitting THP tests
We did not have a direct user interface of splitting the compound page backing a THP and there is no need unless we want to expose the THP implementation details to users. Make <debugfs>/split_huge_pages accept a new command to do that. By writing "<pid>,<vaddr_start>,<vaddr_end>" to <debugfs>/split_huge_pages, THPs within the given virtual address range from the process with the given pid are split. It is used to test split_huge_page function. In addition, a selftest program is added to tools/testing/selftests/vm to utilize the interface by splitting PMD THPs and PTE-mapped THPs. This does not change the old behavior, i.e., writing 1 to the interface to split all THPs in the system. Link: https://lkml.kernel.org/r/20210331235309.332292-1-zi.yan@sent.com Signed-off-by: Zi Yan <ziy@nvidia.com> Reviewed-by: Yang Shi <shy828301@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mika Penttila <mika.penttila@nextfour.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
954b720705 |
dma-mapping updates for Linux 5.13:
- add a new dma_alloc_noncontiguous API (me, Ricardo Ribalda)
- fix a copyright noice (Hao Fang)
- add an unlikely annotation to dma_mapping_error (Heiner Kallweit)
- remove a pointless empty line (Wang Qing)
- add support for multi-pages map/unmap bencharking (Xiang Chen)
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Merge tag 'dma-mapping-5.13' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- add a new dma_alloc_noncontiguous API (me, Ricardo Ribalda)
- fix a copyright notice (Hao Fang)
- add an unlikely annotation to dma_mapping_error (Heiner Kallweit)
- remove a pointless empty line (Wang Qing)
- add support for multi-pages map/unmap bencharking (Xiang Chen)
* tag 'dma-mapping-5.13' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: add unlikely hint to error path in dma_mapping_error
dma-mapping: benchmark: Add support for multi-pages map/unmap
dma-mapping: benchmark: use the correct HiSilicon copyright
dma-mapping: remove a pointless empty line in dma_alloc_coherent
media: uvcvideo: Use dma_alloc_noncontiguous API
dma-iommu: implement ->alloc_noncontiguous
dma-iommu: refactor iommu_dma_alloc_remap
dma-mapping: add a dma_alloc_noncontiguous API
dma-mapping: refactor dma_{alloc,free}_pages
dma-mapping: add a dma_mmap_pages helper
|
||
John 'Warthog9' Hawley (VMware)
|
6a0f365295 |
ktest: Re-arrange the code blocks for better discoverability
Perl, as with most scripting languages, is fairly flexible in how / where you can define things, and it will (for the most part) do what you would expect it to do. This however can lead to situations, like with ktest, where things get muddled over time. This pushes the variable definitions back up to the top, followed by functions, with the main script executables down at the bottom, INSTEAD of being somewhat mish-mashed together in certain places. This mostly has the advantage of making it more obvious where things are initially defined, what functions are there, and ACTUALLY where the main script starts executing, and should make this a little more approachable. Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
|
John 'Warthog9' Hawley (VMware)
|
c043ccbfc6 |
ktest: Further consistency cleanups
This cleans up some additional whitespace pieces that to be more consistent, as well as moving a curly brace around, and some 'or' statements to match the rest of the file (usually or goes at the end of the line vs. at the beginning) Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
|
John 'Warthog9' Hawley (VMware)
|
12d4cddda2 |
ktest: Fixing indentation to match expected pattern
This is a followup to "ktest: Adding editor hints to improve consistency" to actually adjust the existing indentation to match the, now, expected pattern (first column 4 spaces, 2nd tab, 3rd tab + 4 spaces, etc). This should, at least help, keep things consistent going forward now. Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
|
John 'Warthog9' Hawley (VMware)
|
becdd17b5a |
ktest: Adding editor hints to improve consistency
Emacs and Vi(m) have different styles of dealing with perl syntax which can lead to slightly inconsistent indentation, and makes the code slightly harder to read. Emacs assumes a more perl recommended standard of 4 spaces (1 column) or tab (two column) indentation. Vi(m) tends to favor just normal spaces or tabs depending on what was being used. This gives the basic hinting to Emacs and Vim to do what is expected to be basically consistent. Emacs: - Explicitly flip into perl mode, cperl would require more adjustments Vi(m): - Set softtabs=4 which will flip it over to doing indentation the way you would expect from Emacs Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
John 'Warthog9' Hawley (VMware)
|
2676eb4bfc |
ktest: Add example config for using VMware VMs
This duplicates the KVM/Qemu config with specific notes for how to use it with VMware VMs on Workstation, Player, or Fusion. The main thing to be aware of is how the serial port is exposed which is a unix pipe, and will need something like ncat to get into ktest's monitoring Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
|
John 'Warthog9' Hawley (VMware)
|
da2e56634b |
ktest: Minor cleanup with uninitialized variable $build_options
Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
17ae69aba8 |
Add Landlock, a new LSM from Mickaël Salaün <mic@linux.microsoft.com>
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Merge tag 'landlock_v34' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull Landlock LSM from James Morris:
"Add Landlock, a new LSM from Mickaël Salaün.
Briefly, Landlock provides for unprivileged application sandboxing.
From Mickaël's cover letter:
"The goal of Landlock is to enable to restrict ambient rights (e.g.
global filesystem access) for a set of processes. Because Landlock
is a stackable LSM [1], it makes possible to create safe security
sandboxes as new security layers in addition to the existing
system-wide access-controls. This kind of sandbox is expected to
help mitigate the security impact of bugs or unexpected/malicious
behaviors in user-space applications. Landlock empowers any
process, including unprivileged ones, to securely restrict
themselves.
Landlock is inspired by seccomp-bpf but instead of filtering
syscalls and their raw arguments, a Landlock rule can restrict the
use of kernel objects like file hierarchies, according to the
kernel semantic. Landlock also takes inspiration from other OS
sandbox mechanisms: XNU Sandbox, FreeBSD Capsicum or OpenBSD
Pledge/Unveil.
In this current form, Landlock misses some access-control features.
This enables to minimize this patch series and ease review. This
series still addresses multiple use cases, especially with the
combined use of seccomp-bpf: applications with built-in sandboxing,
init systems, security sandbox tools and security-oriented APIs [2]"
The cover letter and v34 posting is here:
https://lore.kernel.org/linux-security-module/20210422154123.13086-1-mic@digikod.net/
See also:
https://landlock.io/
This code has had extensive design discussion and review over several
years"
Link: https://lore.kernel.org/lkml/50db058a-7dde-441b-a7f9-f6837fe8b69f@schaufler-ca.com/ [1]
Link: https://lore.kernel.org/lkml/f646e1c7-33cf-333f-070c-0a40ad0468cd@digikod.net/ [2]
* tag 'landlock_v34' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
landlock: Enable user space to infer supported features
landlock: Add user and kernel documentation
samples/landlock: Add a sandbox manager example
selftests/landlock: Add user space tests
landlock: Add syscall implementations
arch: Wire up Landlock syscalls
fs,security: Add sb_delete hook
landlock: Support filesystem access-control
LSM: Infrastructure management of the superblock
landlock: Add ptrace restrictions
landlock: Set up the security framework and manage credentials
landlock: Add ruleset and domain management
landlock: Add object management
|
||
|
Linus Torvalds
|
152d32aa84 |
ARM:
- Stage-2 isolation for the host kernel when running in protected mode
- Guest SVE support when running in nVHE mode
- Force W^X hypervisor mappings in nVHE mode
- ITS save/restore for guests using direct injection with GICv4.1
- nVHE panics now produce readable backtraces
- Guest support for PTP using the ptp_kvm driver
- Performance improvements in the S2 fault handler
x86:
- Optimizations and cleanup of nested SVM code
- AMD: Support for virtual SPEC_CTRL
- Optimizations of the new MMU code: fast invalidation,
zap under read lock, enable/disably dirty page logging under
read lock
- /dev/kvm API for AMD SEV live migration (guest API coming soon)
- support SEV virtual machines sharing the same encryption context
- support SGX in virtual machines
- add a few more statistics
- improved directed yield heuristics
- Lots and lots of cleanups
Generic:
- Rework of MMU notifier interface, simplifying and optimizing
the architecture-specific code
- Some selftests improvements
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"This is a large update by KVM standards, including AMD PSP (Platform
Security Processor, aka "AMD Secure Technology") and ARM CoreSight
(debug and trace) changes.
ARM:
- CoreSight: Add support for ETE and TRBE
- Stage-2 isolation for the host kernel when running in protected
mode
- Guest SVE support when running in nVHE mode
- Force W^X hypervisor mappings in nVHE mode
- ITS save/restore for guests using direct injection with GICv4.1
- nVHE panics now produce readable backtraces
- Guest support for PTP using the ptp_kvm driver
- Performance improvements in the S2 fault handler
x86:
- AMD PSP driver changes
- Optimizations and cleanup of nested SVM code
- AMD: Support for virtual SPEC_CTRL
- Optimizations of the new MMU code: fast invalidation, zap under
read lock, enable/disably dirty page logging under read lock
- /dev/kvm API for AMD SEV live migration (guest API coming soon)
- support SEV virtual machines sharing the same encryption context
- support SGX in virtual machines
- add a few more statistics
- improved directed yield heuristics
- Lots and lots of cleanups
Generic:
- Rework of MMU notifier interface, simplifying and optimizing the
architecture-specific code
- a handful of "Get rid of oprofile leftovers" patches
- Some selftests improvements"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (379 commits)
KVM: selftests: Speed up set_memory_region_test
selftests: kvm: Fix the check of return value
KVM: x86: Take advantage of kvm_arch_dy_has_pending_interrupt()
KVM: SVM: Skip SEV cache flush if no ASIDs have been used
KVM: SVM: Remove an unnecessary prototype declaration of sev_flush_asids()
KVM: SVM: Drop redundant svm_sev_enabled() helper
KVM: SVM: Move SEV VMCB tracking allocation to sev.c
KVM: SVM: Explicitly check max SEV ASID during sev_hardware_setup()
KVM: SVM: Unconditionally invoke sev_hardware_teardown()
KVM: SVM: Enable SEV/SEV-ES functionality by default (when supported)
KVM: SVM: Condition sev_enabled and sev_es_enabled on CONFIG_KVM_AMD_SEV=y
KVM: SVM: Append "_enabled" to module-scoped SEV/SEV-ES control variables
KVM: SEV: Mask CPUID[0x8000001F].eax according to supported features
KVM: SVM: Move SEV module params/variables to sev.c
KVM: SVM: Disable SEV/SEV-ES if NPT is disabled
KVM: SVM: Free sev_asid_bitmap during init if SEV setup fails
KVM: SVM: Zero out the VMCB array used to track SEV ASID association
x86/sev: Drop redundant and potentially misleading 'sev_enabled'
KVM: x86: Move reverse CPUID helpers to separate header file
KVM: x86: Rename GPR accessors to make mode-aware variants the defaults
...
|
||
Masahiro Yamada
|
77a88274dc |
kbuild: replace LANG=C with LC_ALL=C
LANG gives a weak default to each LC_* in case it is not explicitly defined. LC_ALL, if set, overrides all other LC_* variables. LANG < LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, ... < LC_ALL This is why documentation such as [1] suggests to set LC_ALL in build scripts to get the deterministic result. LANG=C is not strong enough to override LC_* that may be set by end users. [1]: https://reproducible-builds.org/docs/locales/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Matthias Maennich <maennich@google.com> Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net> (mptcp) Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Linus Torvalds
|
d42f323a7d |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "A few misc subsystems and some of MM. 175 patches. Subsystems affected by this patch series: ia64, kbuild, scripts, sh, ocfs2, kfifo, vfs, kernel/watchdog, and mm (slab-generic, slub, kmemleak, debug, pagecache, msync, gup, memremap, memcg, pagemap, mremap, dma, sparsemem, vmalloc, documentation, kasan, initialization, pagealloc, and memory-failure)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (175 commits) mm/memory-failure: unnecessary amount of unmapping mm/mmzone.h: fix existing kernel-doc comments and link them to core-api mm: page_alloc: ignore init_on_free=1 for debug_pagealloc=1 net: page_pool: use alloc_pages_bulk in refill code path net: page_pool: refactor dma_map into own function page_pool_dma_map SUNRPC: refresh rq_pages using a bulk page allocator SUNRPC: set rq_page_end differently mm/page_alloc: inline __rmqueue_pcplist mm/page_alloc: optimize code layout for __alloc_pages_bulk mm/page_alloc: add an array-based interface to the bulk page allocator mm/page_alloc: add a bulk page allocator mm/page_alloc: rename alloced to allocated mm/page_alloc: duplicate include linux/vmalloc.h mm, page_alloc: avoid page_to_pfn() in move_freepages() mm/Kconfig: remove default DISCONTIGMEM_MANUAL mm: page_alloc: dump migrate-failed pages mm/mempolicy: fix mpol_misplaced kernel-doc mm/mempolicy: rewrite alloc_pages_vma documentation mm/mempolicy: rewrite alloc_pages documentation mm/mempolicy: rename alloc_pages_current to alloc_pages ... |
||
|
Linus Torvalds
|
c70a4be130 |
powerpc updates for 5.13
- Enable KFENCE for 32-bit. - Implement EBPF for 32-bit. - Convert 32-bit to do interrupt entry/exit in C. - Convert 64-bit BookE to do interrupt entry/exit in C. - Changes to our signal handling code to use user_access_begin/end() more extensively. - Add support for time namespaces (CONFIG_TIME_NS) - A series of fixes that allow us to reenable STRICT_KERNEL_RWX. - Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Andreas Schwab, Andrew Donnellan, Aneesh Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Bixuan Cui, Cédric Le Goater, Chen Huang, Chris Packham, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Dan Carpenter, Daniel Axtens, Daniel Henrique Barboza, David Gibson, Davidlohr Bueso, Denis Efremov, dingsenjie, Dmitry Safonov, Dominic DeMarco, Fabiano Rosas, Ganesh Goudar, Geert Uytterhoeven, Geetika Moolchandani, Greg Kurz, Guenter Roeck, Haren Myneni, He Ying, Jiapeng Chong, Jordan Niethe, Laurent Dufour, Lee Jones, Leonardo Bras, Li Huafei, Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Nathan Chancellor, Nathan Lynch, Nicholas Piggin, Oliver O'Halloran, Paul Menzel, Pu Lehui, Randy Dunlap, Ravi Bangoria, Rosen Penev, Russell Currey, Santosh Sivaraj, Sebastian Andrzej Siewior, Segher Boessenkool, Shivaprasad G Bhat, Srikar Dronamraju, Stephen Rothwell, Thadeu Lima de Souza Cascardo, Thomas Gleixner, Tony Ambardar, Tyrel Datwyler, Vaibhav Jain, Vincenzo Frascino, Xiongwei Song, Yang Li, Yu Kuai, Zhang Yunkai. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmCLV1kTHG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgLUyD/4jrTolG4sVec211hYO+0VuJzoqN4Cf j2CA2Ju39butnSMiq4LJUPRB7QRZY1OofkoNFpZeDQspjfZXPz2ulpYAz+SxHWE2 ReHPmWH1rOABlUPXFboePF4OLwmAs9eR5mN2z9HpKXbT3k78HaToLqiONyB4fVCr Q5TkJeRn/Y7ZJLdyPLTpczHHleQ8KoM6kT7ncXnTm6p97JOBJSrGaJ5N/8X5a4+e 6jtgB7Pvw8jNDShSr8BDLBgBZZcmoTiuG8KfgwRZ+m+mKB1yI2X8S/a54w/lDi9g UcSv3jQcFLJuW+T/pYe4R330uWDYa0cwjJOtMmsJ98S4EYOevoe9fZuL97qNshme xtBr4q1i03G1icYOJJ8dXtvabG2rUzj8t1SCDpwYfrynzTWVRikiQYTXUBhRSFoK nsoklvKd2IZa485XYJ2ljSyClMy8S4yJJ9RuzZ94DTXDSJUesKuyRWGnso4mhkcl wvl4wwMTJvnCMKVo6dsJyV24QWfd6dABxzm04uPA94CKhG33UwK8252jXVeaohSb WSO7qWBONgDXQLJ0mXRcEYa9NHvFS4Jnp6APbxnHr1gS+K+PNkD4gPBf34FoyN0E 9s27kvEYk5vr8APUclETF6+FkbGUD5bFbusjt3hYloFpAoHQ/k5pFVDsOZNPA8sW fDIRp05KunDojw== =dfKL -----END PGP SIGNATURE----- Merge tag 'powerpc-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Enable KFENCE for 32-bit. - Implement EBPF for 32-bit. - Convert 32-bit to do interrupt entry/exit in C. - Convert 64-bit BookE to do interrupt entry/exit in C. - Changes to our signal handling code to use user_access_begin/end() more extensively. - Add support for time namespaces (CONFIG_TIME_NS) - A series of fixes that allow us to reenable STRICT_KERNEL_RWX. - Other smaller features, fixes & cleanups. Thanks to Alexey Kardashevskiy, Andreas Schwab, Andrew Donnellan, Aneesh Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Bixuan Cui, Cédric Le Goater, Chen Huang, Chris Packham, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Dan Carpenter, Daniel Axtens, Daniel Henrique Barboza, David Gibson, Davidlohr Bueso, Denis Efremov, dingsenjie, Dmitry Safonov, Dominic DeMarco, Fabiano Rosas, Ganesh Goudar, Geert Uytterhoeven, Geetika Moolchandani, Greg Kurz, Guenter Roeck, Haren Myneni, He Ying, Jiapeng Chong, Jordan Niethe, Laurent Dufour, Lee Jones, Leonardo Bras, Li Huafei, Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Nathan Chancellor, Nathan Lynch, Nicholas Piggin, Oliver O'Halloran, Paul Menzel, Pu Lehui, Randy Dunlap, Ravi Bangoria, Rosen Penev, Russell Currey, Santosh Sivaraj, Sebastian Andrzej Siewior, Segher Boessenkool, Shivaprasad G Bhat, Srikar Dronamraju, Stephen Rothwell, Thadeu Lima de Souza Cascardo, Thomas Gleixner, Tony Ambardar, Tyrel Datwyler, Vaibhav Jain, Vincenzo Frascino, Xiongwei Song, Yang Li, Yu Kuai, and Zhang Yunkai. * tag 'powerpc-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (302 commits) powerpc/signal32: Fix erroneous SIGSEGV on RT signal return powerpc: Avoid clang uninitialized warning in __get_user_size_allowed powerpc/papr_scm: Mark nvdimm as unarmed if needed during probe powerpc/kvm: Fix build error when PPC_MEM_KEYS/PPC_PSERIES=n powerpc/kasan: Fix shadow start address with modules powerpc/kernel/iommu: Use largepool as a last resort when !largealloc powerpc/kernel/iommu: Align size for IOMMU_PAGE_SIZE() to save TCEs powerpc/44x: fix spelling mistake in Kconfig "varients" -> "variants" powerpc/iommu: Annotate nested lock for lockdep powerpc/iommu: Do not immediately panic when failed IOMMU table allocation powerpc/iommu: Allocate it_map by vmalloc selftests/powerpc: remove unneeded semicolon powerpc/64s: remove unneeded semicolon powerpc/eeh: remove unneeded semicolon powerpc/selftests: Add selftest to test concurrent perf/ptrace events powerpc/selftests/perf-hwbreak: Add testcases for 2nd DAWR powerpc/selftests/perf-hwbreak: Coalesce event creation code powerpc/selftests/ptrace-hwbreak: Add testcases for 2nd DAWR powerpc/configs: Add IBMVNIC to some 64-bit configs selftests/powerpc: Add uaccess flush test ... |
||
Uladzislau Rezki (Sony)
|
7bc4ca3ea9 |
vm/test_vmalloc.sh: adapt for updated driver interface
A 'single_cpu_test' parameter is odd and it does not exist anymore. Instead there was introduced a 'nr_threads' one. If it is not set it behaves as the former parameter. That is why update a "stress mode" according to this change specifying number of workers which are equal to number of CPUs. Also update an output of help message based on a new interface. Link: https://lkml.kernel.org/r/20210402202237.20334-3-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Hillf Danton <hdanton@sina.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Brian Geffon
|
8593100444 |
selftests: add a MREMAP_DONTUNMAP selftest for shmem
This test extends the current mremap tests to validate that the MREMAP_DONTUNMAP operation can be performed on shmem mappings. Link: https://lkml.kernel.org/r/20210323182520.2712101-3-bgeffon@google.com Signed-off-by: Brian Geffon <bgeffon@google.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Lokesh Gidra <lokeshgidra@google.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Peter Xu <peterx@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: "Michael S . Tsirkin" <mst@redhat.com> Cc: Brian Geffon <bgeffon@google.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Sonny Rao <sonnyrao@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Dmitry Safonov <dima@arista.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Alejandro Colomar <alx.manpages@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Johannes Weiner
|
4bbcc5a41c |
kselftests: cgroup: update kmem test for new vmstat implementation
With memcg having switched to rstat, memory.stat output is precise. Update the cgroup selftest to reflect the expectations and error tolerances of the new implementation. Also add newly tracked types of memory to the memory.stat side of the equation, since they're included in memory.current and could throw false positives. Link: https://lkml.kernel.org/r/20210209163304.77088-9-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Reviewed-by: Michal Koutný <mkoutny@suse.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Florent Revest
|
f80f88f0e2 |
selftests/bpf: Fix the snprintf test
The BPF program for the snprintf selftest runs on all syscall entries.
On busy multicore systems this can cause concurrency issues.
For example it was observed that sometimes the userspace part of the
test reads " 4 0000" instead of " 4 000" (extra '0' at the end)
which seems to happen just before snprintf on another core sets
end[-1] = '\0'.
This patch adds a pid filter to the test to ensure that no
bpf_snprintf() will write over the test's output buffers while the
userspace reads the values.
Fixes:
|
||
|
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
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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
...
|
||
|
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>
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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
...
|
||
|
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>
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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
...
|
||
|
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 ... |
||
|
Linus Torvalds
|
1e9599dfc4 |
linux-kselftest-kunit-5.13-rc1
This KUnit update for Linux 5.13-rc1 consists of several fixes and
new feature to support failure from dynamic analysis tools such as
UBSAN and fake ops for testing.
- a fake ops struct for testing a "free" function to complain if it
was called with an invalid argument, or caught a double-free. Most
return void and have no normal means of signalling failure
(e.g. super_operations, iommu_ops, etc.).
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Merge tag 'linux-kselftest-kunit-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan:
"Several fixes and a new feature to support failure from dynamic
analysis tools such as UBSAN and fake ops for testing.
- a fake ops struct for testing a "free" function to complain if it
was called with an invalid argument, or caught a double-free. Most
return void and have no normal means of signalling failure (e.g.
super_operations, iommu_ops, etc.)"
* tag 'linux-kselftest-kunit-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
Documentation: kunit: add tips for using current->kunit_test
kunit: fix -Wunused-function warning for __kunit_fail_current_test
kunit: support failure from dynamic analysis tools
kunit: tool: make --kunitconfig accept dirs, add lib/kunit fragment
kunit: make KUNIT_EXPECT_STREQ() quote values, don't print literals
kunit: Match parenthesis alignment to improve code readability
|
||
|
Linus Torvalds
|
2a68c268a1 |
linux-kselftest-next-5.13-rc1
This Kselftest update for Linux 5.13-rc1 consists of: - fixes and updates to resctrl test from Fenghua Yu and Reinette Chatre - fixes to Kselftest documentation, framework - minor spelling correction in timers test -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmCIls8ACgkQCwJExA0N QxzrDg/9E2+KrNsqT/bVZIDZgPsLOPtkIaNd+94wsGKgHUSekoHRYKcmeRZLLA3x m6s4Jc8o84rztRgjjttWCOQD3ICsFC5Dp4eu2f8YowlPqPRn0MMJEUwQAPhxnFq0 44KQ2v7bJhXYZRwhZXcv1Gu1o3o6cx59X9pLFo/Yf/OeTHj7ulegWtjCvBcS2uuT bhI0YbiCKDE4gIXYLPWKD96JjLRVo5zYnMIRqDJrgf7xSr+xoKmsZKSgkt6ca+My KSYtkaXDEB1DFNoovDQyhmAwImeqWgEKPMZIblLyfoUJNRyBQg9flRvguBzgR3TM J1lvavNZSC7qgx9xQI4DjsHtpn9y9C5/k9vXauhVtdMpMGY6zrz2zN5/xOohXjzN vlonhp6G/wkfxuo0Dcr++Oqlw5wWt55hxFJm84rIQ/2IYUfRBKWV5c2mUKRUJzrr pT3fcIpN1WTEBaxvC4/aL5oLvF/RSArSKs7StX1uzkedy7IwPsiCJa5OgT2iNSbH tpDS9KNOiLIkwpr8dBF9O9WRBo8ZtUoB1OPqQWuc0PMa0RDT4i/oTwe0ulu5rWma 5G3yQIilTsRAxpFWihklBiV0pB9bT8O/d8kMlagj/znl8GmKyiXEMDwrCPfVmp16 zNMskcarXWgL+BdhnSX5j53tLL6MEAWS1RzweR62U20eyPJF34Y= =0VC+ -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-next-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest updates from Shuah Khan: - fixes and updates to resctrl test from Fenghua Yu and Reinette Chatre - fixes to Kselftest documentation, framework - minor spelling correction in timers test * tag 'linux-kselftest-next-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits) selftests/resctrl: Change a few printed messages Documentation: kselftest: fix path to test module files selftests/resctrl: Create .gitignore to include resctrl_tests selftests/resctrl: Fix checking for < 0 for unsigned values selftests/resctrl: Fix incorrect parsing of iMC counters selftests/resctrl: Fix unmount resctrl FS selftests/resctrl: Skip the test if requested resctrl feature is not supported selftests/resctrl: Modularize resctrl test suite main() function selftests/resctrl: Don't hard code value of "no_of_bits" variable selftests/resctrl: Fix MBA/MBM results reporting format selftests/resctrl: Use resctrl/info for feature detection selftests/resctrl: Check for resctrl mount point only if resctrl FS is supported selftests/resctrl: Add config dependencies selftests/resctrl: Fix a printed message selftests/resctrl: Share show_cache_info() by CAT and CMT tests selftests/resctrl: Call kselftest APIs to log test results selftests/resctrl: Rename CQM test as CMT test selftests/resctrl: Fix missing options "-n" and "-p" selftests/resctrl: Ensure sibling CPU is not same as original CPU selftests/resctrl: Clean up resctrl features check ... |
||
Pedro Tammela
|
3733bfbbdd |
bpf, selftests: Update array map tests for per-cpu batched ops
Follows the same logic as the hashtable tests. Signed-off-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210424214510.806627-3-pctammela@mojatatu.com |
||
Daniel Borkmann
|
10bf4e8316 |
bpf: Fix propagation of 32 bit unsigned bounds from 64 bit bounds
Similarly as |
||
Andrii Nakryiko
|
bede0ebf0b |
selftests/bpf: Fix core_reloc test runner
Fix failed tests checks in core_reloc test runner, which allowed failing tests
to pass quietly. Also add extra check to make sure that expected to fail test cases with
invalid names are caught as test failure anyway, as this is not an expected
failure mode. Also fix mislabeled probed vs direct bitfield test cases.
Fixes:
|
||
|
Andrii Nakryiko
|
5a30eb2392 |
selftests/bpf: Fix field existence CO-RE reloc tests
Negative field existence cases for have a broken assumption that FIELD_EXISTS
CO-RE relo will fail for fields that match the name but have incompatible type
signature. That's not how CO-RE relocations generally behave. Types and fields
that match by name but not by expected type are treated as non-matching
candidates and are skipped. Error later is reported if no matching candidate
was found. That's what happens for most relocations, but existence relocations
(FIELD_EXISTS and TYPE_EXISTS) are more permissive and they are designed to
return 0 or 1, depending if a match is found. This allows to handle
name-conflicting but incompatible types in BPF code easily. Combined with
___flavor suffixes, it's possible to handle pretty much any structural type
changes in kernel within the compiled once BPF source code.
So, long story short, negative field existence test cases are invalid in their
assumptions, so this patch reworks them into a single consolidated positive
case that doesn't match any of the fields.
Fixes:
|
||
|
Andrii Nakryiko
|
7a2fa70aaf |
selftests/bpf: Add remaining ASSERT_xxx() variants
Add ASSERT_TRUE/ASSERT_FALSE for conditions calculated with custom logic to true/false. Also add remaining arithmetical assertions: - ASSERT_LE -- less than or equal; - ASSERT_GT -- greater than; - ASSERT_GE -- greater than or equal. This should cover most scenarios where people fall back to error-prone CHECK()s. Also extend ASSERT_ERR() to print out errno, in addition to direct error. Also convert few CHECK() instances to ensure new ASSERT_xxx() variants work as expected. Subsequent patch will also use ASSERT_TRUE/ASSERT_FALSE more extensively. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Lorenz Bauer <lmb@cloudflare.com> Link: https://lore.kernel.org/bpf/20210426192949.416837-2-andrii@kernel.org |
||
|
Linus Torvalds
|
c01c0716cc |
Driver core changes for 5.13-rc1
Here is the "big" set of driver core changes for 5.13-rc1.
Nothing major, just lots of little core changes and cleanups, notable
things are:
- finally set fw_devlink=on by default. All reported issues
with this have been shaken out over the past 9 months or so,
but we will be paying attention to any fallout here in case we
need to revert this as the default boot value (symptoms of
problems are a simple lack of booting)
- fixes found to be needed by fw_devlink=on value in some
subsystems (like clock).
- delayed work initialization cleanup
- driver core cleanups and minor updates
- software node cleanups and tweaks
- devtmpfs cleanups
- minor debugfs cleanups
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the "big" set of driver core changes for 5.13-rc1.
Nothing major, just lots of little core changes and cleanups, notable
things are:
- finally set 'fw_devlink=on' by default.
All reported issues with this have been shaken out over the past 9
months or so, but we will be paying attention to any fallout here
in case we need to revert this as the default boot value (symptoms
of problems are a simple lack of booting)
- fixes found to be needed by fw_devlink=on value in some subsystems
(like clock).
- delayed work initialization cleanup
- driver core cleanups and minor updates
- software node cleanups and tweaks
- devtmpfs cleanups
- minor debugfs cleanups
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (53 commits)
devm-helpers: Fix devm_delayed_work_autocancel() kerneldoc
PM / wakeup: use dev_set_name() directly
software node: Allow node addition to already existing device
kunit: software node: adhear to KUNIT formatting standard
node: fix device cleanups in error handling code
kobject_uevent: remove warning in init_uevent_argv()
debugfs: Make debugfs_allow RO after init
Revert "driver core: platform: Make platform_get_irq_optional() optional"
media: ipu3-cio2: Switch to use SOFTWARE_NODE_REFERENCE()
software node: Introduce SOFTWARE_NODE_REFERENCE() helper macro
software node: Imply kobj_to_swnode() to be no-op
software node: Deduplicate code in fwnode_create_software_node()
software node: Introduce software_node_alloc()/software_node_free()
software node: Free resources explicitly when swnode_register() fails
debugfs: drop pointless nul-termination in debugfs_read_file_bool()
driver core: add helper for deferred probe reason setting
driver core: Improve fw_devlink & deferred_probe_timeout interaction
of: property: fw_devlink: Add support for remote-endpoint
driver core: platform: Make platform_get_irq_optional() optional
driver core: Replace printf() specifier and drop unneeded casting
...
|
||
|
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.
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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
...
|
||
|
Linus Torvalds
|
eea2647e74 |
Entry code update:
Provide support for randomized stack offsets per syscall to make stack-based attacks harder which rely on the deterministic stack layout. The feature is based on the original idea of PaX's RANDSTACK feature, but uses a significantly different implementation. The offset does not affect the pt_regs location on the task stack as this was agreed on to be of dubious value. The offset is applied before the actual syscall is invoked. The offset is stored per cpu and the randomization happens at the end of the syscall which is less predictable than on syscall entry. The mechanism to apply the offset is via alloca(), i.e. abusing the dispised VLAs. This comes with the drawback that stack-clash-protection has to be disabled for the affected compilation units and there is also a negative interaction with stack-protector. Those downsides are traded with the advantage that this approach does not require any intrusive changes to the low level assembly entry code, does not affect the unwinder and the correct stack alignment is handled automatically by the compiler. The feature is guarded with a static branch which avoids the overhead when disabled. Currently this is supported for X86 and ARM64. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmCGjz8THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoWsvD/4tGnPAurd6lbzxWzRjW7jOOVyzkODM UXtIxxICaj7o6MNcloaGe1QtJ8+QOCw3yPQfLG/SoWHse5+oUKQRL9dmWVeJyRSt JZ1pirkKqWrB+OmPbJKUiO3/TsZ2Z/vO41JVgVTL5/HWhOECSDzZsJkuvF/H+qYD ReDzd7FUNd76pwVOsXq/cxXclRa81/wMNZRVwmyAwFYE2XoPtQyTERTLrfj6aQKF P0txr9fEjYlPPwYOk1kjBAoJfDltNm48BBL7CGZtRlsqpNpdsJ1MkeGffhodb6F0 pJYQMlQJHXABZb5GF+v93+iASDpRFn0EvPmLkCxQUfZYLOkRsnuEF2S/fsYX/WPo uin/wQKwLVdeQq9d9BwlZUKEgsQuV7Q0GVN+JnEQerwD6cWTxv4a1RIUH+K/4Wo5 nTeJVRKcs6m7UkGQRm8JbqnUP0vCV+PSiWWB8J9CmjYeCPbkGjt6mBIsmPaDZ9VL 4i+UX5DJayoREF/rspOBcJftUmExize49p9860UI9N6fd7DsDt7Dq9Ai+ADtZa4C 9BPbF4NWzJq8IWLqBi+PpKBAT3JMX9qQi7s9sbrRxpxtew9Keu5qggKZJYumX71V qgUMk+xB86HZOrtF6F3oY0zxYv3haPvDydsDgqojtqNGk4PdAdgDYJQwMlb8QSly SwIWPHIfvP4R9w== =GMlJ -----END PGP SIGNATURE----- Merge tag 'x86-entry-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull entry code update from Thomas Gleixner: "Provide support for randomized stack offsets per syscall to make stack-based attacks harder which rely on the deterministic stack layout. The feature is based on the original idea of PaX's RANDSTACK feature, but uses a significantly different implementation. The offset does not affect the pt_regs location on the task stack as this was agreed on to be of dubious value. The offset is applied before the actual syscall is invoked. The offset is stored per cpu and the randomization happens at the end of the syscall which is less predictable than on syscall entry. The mechanism to apply the offset is via alloca(), i.e. abusing the dispised VLAs. This comes with the drawback that stack-clash-protection has to be disabled for the affected compilation units and there is also a negative interaction with stack-protector. Those downsides are traded with the advantage that this approach does not require any intrusive changes to the low level assembly entry code, does not affect the unwinder and the correct stack alignment is handled automatically by the compiler. The feature is guarded with a static branch which avoids the overhead when disabled. Currently this is supported for X86 and ARM64" * tag 'x86-entry-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: arm64: entry: Enable random_kstack_offset support lkdtm: Add REPORT_STACK for checking stack offsets x86/entry: Enable random_kstack_offset support stack: Optionally randomize kernel stack offset each syscall init_on_alloc: Optimize static branches jump_label: Provide CONFIG-driven build state defaults |
||
|
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.
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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)
...
|
||
Vitaly Kuznetsov
|
3bf0fcd754 |
KVM: selftests: Speed up set_memory_region_test
After commit
|
||
|
Linus Torvalds
|
81a489790a |
Add the guest side of SGX support in KVM guests. Work by Sean
Christopherson, Kai Huang and Jarkko Sakkinen. Along with the usual fixes, cleanups and improvements. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmCGlgYACgkQEsHwGGHe VUqbYA/+IgX7uBkATndzTBL6l/D3QQaMRUkOk5nO9sOzQaYJ/Qwarfakax61CZrl dZFdF07T/kSpMXQ6HIjzEaRx6j12xMYksrm8xBBSfXjtkIYu4auVloX2ldKhHwaK OyiKS+R0O/Q7XvozEiPsQCf7XwraZFO+iMJ0jMxbPO7ZvxDXDBv0Fx3d9yzPx9Qg BbJuIEKMoFPR3P39CWw0cOXr12Z9mmFReBKoSV4dZbZMRmv7FrA/Qlc+uS+RNZFK /5sCn7x27qVx8Ha/Lh42kQf+yqv1l3437aqmG2vAbHQPmnbDmBeApZ6jhaoX3jhD 9ylkcpWFFf26oSbYAdmztZENLXRWLH6OIPxtmbf2HMsROiNR/cV0s4d2aduN/dHz s1VnaDFayoub9CPWtiv0RJJnwmB6d+wF2JbQGh+kPZMX3VaxVPwTVLWQdsAVaB8Y y7A2vZeWWHvP1a7ATbTFRDlTKKV3qDpMTD1B+hFELLNjMvyDU5c/1GhrIh0o1Jo3 jGrauylSInMxDkpDTDhQqU+/CSnV03zdzq1DSzxgig2Q0Es6pKxQHbL0honTf0GJ l+8nefsQqRguZ1rVeuuSYvGPF++eqfyOiTZgN4fWdtZWJKMabsPNUbc4U3sP0/Sn oe3Ixo2F41E9++MODF1G80DKLD/mVLYxdzC91suOmgfB2gbRhSg= =KFYo -----END PGP SIGNATURE----- Merge tag 'x86_sgx_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SGX updates from Borislav Petkov: "Add the guest side of SGX support in KVM guests. Work by Sean Christopherson, Kai Huang and Jarkko Sakkinen. Along with the usual fixes, cleanups and improvements" * tag 'x86_sgx_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86/sgx: Mark sgx_vepc_vm_ops static x86/sgx: Do not update sgx_nr_free_pages in sgx_setup_epc_section() x86/sgx: Move provisioning device creation out of SGX driver x86/sgx: Add helpers to expose ECREATE and EINIT to KVM x86/sgx: Add helper to update SGX_LEPUBKEYHASHn MSRs x86/sgx: Add encls_faulted() helper x86/sgx: Add SGX2 ENCLS leaf definitions (EAUG, EMODPR and EMODT) x86/sgx: Move ENCLS leaf definitions to sgx.h x86/sgx: Expose SGX architectural definitions to the kernel x86/sgx: Initialize virtual EPC driver even when SGX driver is disabled x86/cpu/intel: Allow SGX virtualization without Launch Control support x86/sgx: Introduce virtual EPC for use by KVM guests x86/sgx: Add SGX_CHILD_PRESENT hardware error code x86/sgx: Wipe out EREMOVE from sgx_free_epc_page() x86/cpufeatures: Add SGX1 and SGX2 sub-features x86/cpufeatures: Make SGX_LC feature bit depend on SGX bit x86/sgx: Remove unnecessary kmap() from sgx_ioc_enclave_init() selftests/sgx: Use getauxval() to simplify test code selftests/sgx: Improve error detection and messages x86/sgx: Add a basic NUMA allocation scheme to sgx_alloc_epc_page() ... |
||
|
Linus Torvalds
|
98ee795b21 |
A new kcpuid tool to dump the raw CPUID leafs of a CPU. It has the CPUID
bit definitions in a separate csv file which allows for adding support for new CPUID leafs and bits without having to update the tool. The main use case for the tool is hw enablement on preproduction x86 hw. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmCGjgsACgkQEsHwGGHe VUo7Ng//YbZgJk2RfRKLKnYbp0eZdzodyynxGZ101p81atsW7gsNeepKIwbWJ7Jb +gv34bolO8QB3wBmY5YTZgedEguiqcrNQ4DaT/DLlE0C96kY6k/+wYFAokYVlsSH ZffPymnEE9ZhWwg7sgN+oBEyxj/Fz3hY4nnjX2+qcIYg77pkt85fobQ5+pqfbbDB uemKQsaCHI5AH8R3u8PGVDR2wNvtYjofAjywFWl6qNpp+MEoeOGFVj4W6c6N+XNc Mq7Bli5Hb9jd0VrI0UhOr3em/2V3YWrlFBn+rnhmzYlpLHC9+5dvaiCugC8K5G0A U/iXPNyFjib6G1D38MDR0HfJtfgUK/xwqMZ61pQye9EspqCnMrMhnIMiS5mqNjFw JvpKHioQncIWO2MJEDVCfIvDmLjQ3Ms7VWeW8VgxPD7Vg/Gj9ZAzuMawEKi/w57C bRnWnQAlyopycIDdN/8R0saVVlWK3a1vZ5RlWM3GnuE83RUJ7Du0S28KRWP1pMy5 ac6qJUn0eVYsJzul6MGliTxU4THJpBut6vSMQnf2I3j4jSKq2Fx73MaypEEKuHck bB8EC6HgUWSfI2HIcUDAwJSaMhp/SkEKlg9OiatyTsWWJYUwilLOdBeN3By3skb9 y7hZdIwuyICiYg7T4Et0doa7IkBYJEJ+G3/wSw+IlstoMzado6g= =G/Um -----END PGP SIGNATURE----- Merge tag 'x86_misc_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 tool update from Borislav Petkov: "A new kcpuid tool to dump the raw CPUID leafs of a CPU. It has the CPUID bit definitions in a separate csv file which allows for adding support for new CPUID leafs and bits without having to update the tool. The main use case for the tool is hw enablement on preproduction x86 hardware" * tag 'x86_misc_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tools/x86/kcpuid: Add AMD leaf 0x8000001E tools/x86/kcpuid: Check last token too selftests/x86: Add a missing .note.GNU-stack section to thunks_32.S tools/x86/kcpuid: Add AMD Secure Encryption leaf tools/x86: Add a kcpuid tool to show raw CPU features |
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Zhenzhong Duan
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d4787579d2 |
selftests: kvm: Fix the check of return value
In vm_vcpu_rm() and kvm_vm_release(), a stale return value is checked in TEST_ASSERT macro. Fix it by assigning variable ret with correct return value. Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Message-Id: <20210426193138.118276-1-zhenzhong.duan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Jiri Olsa
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7bb2cc19ae |
selftests/bpf: Use ASSERT macros in lsm test
Replacing CHECK with ASSERT macros. Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210414195147.1624932-8-jolsa@kernel.org |