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1566feea45
932961 Commits
Author | SHA1 | Message | Date | |
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Linus Torvalds
|
1566feea45 |
s390 fixes for 5.8-rc2
- Few ptrace fixes mostly for strace and seccomp_bpf kernel tests findings. - Cleanup unused pm callbacks in virtio ccw. - Replace kmalloc + memset with kzalloc in crypto. - Use $(LD) for vDSO linkage to make clang happy. - Fix vDSO clock_getres() to preserve the same behaviour as posix_get_hrtimer_res(). - Fix workqueue cpumask warning when NUMA=n and nr_node_ids=2. - Reduce SLSB writes during input processing, improve warnings and cleanup qdio_data usage in qdio. - Few fixes to use scnprintf() instead of snprintf(). -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAl7uJy8ACgkQjYWKoQLX FBitMwgAovHP6O19ZS2RE2Ps20CjM+z0sLLGHF6aMrV7OqmOWrNnFzN4jT2j42Ck idSZ6sehVd3Uj6K8NnzrlSS3sjGRhVaQJEjjN+rLyw0HBwxspJJfW5HgcoMtqNH1 oo+nt+zw5jk+6MqHx4QEwTxN5rgGs6UMhiLIAIlkDu4bivgohvGUxe4RUrN/mINx cdYqomCkvovLT5sBTaWyXKNCDAdAWgNpOfdqc9MjOUXSbUg3lrUol0gUULzenPo7 wUN+sZ0di0Ox0+2+4m8LU1av/kMTLSSvnR9DW5KdpGTon1nwpZcdJnhI5o1v7uaU pIaMOYNieEHJ2DnieR9iBBSbGoNCmw== =gkgN -----END PGP SIGNATURE----- Merge tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Vasily Gorbik: - a few ptrace fixes mostly for strace and seccomp_bpf kernel tests findings - cleanup unused pm callbacks in virtio ccw - replace kmalloc + memset with kzalloc in crypto - use $(LD) for vDSO linkage to make clang happy - fix vDSO clock_getres() to preserve the same behaviour as posix_get_hrtimer_res() - fix workqueue cpumask warning when NUMA=n and nr_node_ids=2 - reduce SLSB writes during input processing, improve warnings and cleanup qdio_data usage in qdio - a few fixes to use scnprintf() instead of snprintf() * tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: fix syscall_get_error for compat processes s390/qdio: warn about unexpected SLSB states s390/qdio: clean up usage of qdio_data s390/numa: let NODES_SHIFT depend on NEED_MULTIPLE_NODES s390/vdso: fix vDSO clock_getres() s390/vdso: Use $(LD) instead of $(CC) to link vDSO s390/protvirt: use scnprintf() instead of snprintf() s390: use scnprintf() in sys_##_prefix##_##_name##_show s390/crypto: use scnprintf() instead of snprintf() s390/zcrypt: use kzalloc s390/virtio: remove unused pm callbacks s390/qdio: reduce SLSB writes during Input Queue processing selftests/seccomp: s390 shares the syscall and return value register s390/ptrace: fix setting syscall number s390/ptrace: pass invalid syscall numbers to tracing s390/ptrace: return -ENOSYS when invalid syscall is supplied s390/seccomp: pass syscall arguments via seccomp_data s390/qdio: fine-tune SLSB update |
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Linus Torvalds
|
7fdfbe08a2 |
RISC-V Fixes for 5.8-rc2
This contains three fixes that I'd like to target for rc2: * A workaround for a compiler surprise related to the "r" inline assembly that allows LLVM to boot. * A fix to avoid WX-only mappings, which the ISA does not allow. While this probably manifests in many ways, the bug was found in stress-ng. * A missing lock in set_direct_map_*(), which due to a recent lockdep change started asserting. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAl7tRxkTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiaJZD/9hzS6fxNlcLaLyBLLroWLlWnwGAi7r T3hTyNVo3EG/hHw0NGEWzqVuqjnuo0MAHDlTfkD7SuuBtj2PtZHVdX5JA9QsJF1j KF3hz14GbbGuzOWlt6m+6KMU4r9+qX+0L3aqu0ShXVZhsHjKyuYTSHlwIRLzCzlQ jcCVnrIQtq0pAcGylmL5s/9kVFGrpE6m1+Xm+mpPbgQCbqFMYCBVx8sb2EnEPv/X TzgCzS8sjRG0FYIrquwxuHtKg+AlgmmaQw96fWOq9R4mJtNvcDFbaTT5MEqQYP6B kljNf3DAdKG0QqKCtNC5BvgE+45BpQ67ZIUypG00Y0zViY2ZOjNGqGi7kzzIqOWG IwwB6Gcb6CJnOWRJ2OlkDDdOe1VOvrE/ap+WEYE8Fb/TRQhdOjcHMzd9d/0JXe9R XySr5gtpppKABJjBWmzGfqLRXby7qQFXR4BqnpPGuqR1Z0l5MaihN2mlpOZrDbMS Y0j1vQuINBkoBqXBfqxCZb5gvwxHI+5lwFNy8chw8JZTOuvLYJ0s5bK8AF9fAGk8 7NCv+JCt2mrjMLRoZw7EFu4wqBTjjDXKP5AiiKHOCG9y4lokqLdATWirlWwScTt0 TvikaMYsDdiuhRpg0D0YCKGzQ9Cl23XvGe9fm6Ajhhkn6lONJD0/V/1i0MfY0+Nm 7TI46cNfvsUsWw== =ZAlD -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - a workaround for a compiler surprise related to the "r" inline assembly that allows LLVM to boot. - a fix to avoid WX-only mappings, which the ISA does not allow. While this probably manifests in many ways, the bug was found in stress-ng. - a missing lock in set_direct_map_*(), which due to a recent lockdep change started asserting. * tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: RISC-V: Acquire mmap lock before invoking walk_page_range RISC-V: Don't allow write+exec only page mapping request in mmap riscv/atomic: Fix sign extension for RV64I |
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Linus Torvalds
|
27c2760561 |
linux-kselftest-5.8-rc2
This Kselftest update for Linux 5.8-rc2 consists of: - ftrace "requires:" list for simplifying and unifying requirement checks for each test case, adding "requires:" line instead of checking required ftrace interfaces in each test case. - a minor spelling correction patch -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAl7s440ACgkQCwJExA0N Qxyl1A//YDbxzJlB6zrmSmagIKC0KGKDcSrAJNsV6K5lIEf7yPi2DkvQT6jpo27M Xtv+GTF8nuAJRuRceawKp622o+jT7dd7dUt0FFInsj2xPwTLFy0E+AvZ5j2cqps7 gqcdOeHU/u6QrprUX4JCoOf0NdjJsKwzfOXiaOlBGG26bqMZFOnhbd/DclwWbStJ gOIqMxp7feQ9yjm5ngSZVmQ6sbM+6ZwsywD1kXrSL68gQ+s3segnzDoaoHSFoGwj lysOHbx3+/Q+pH18nnFAp6H9csr+iMVqlj1FGN62JUVhkaMdlFhnk/cpO97Lvuwf nOU3BC0FWSjvquAhL2ZqGnfeXBoHSO9wfpOcC/Dyro4QozvlzigM1PBS3WoRbxzl 2ArZ985xhSqeuiJKa4CwLQWR495FOasm4gHBe9nVrqaiwAORZfdqeBgTJBTw8Y7K W3+DmA4ttZE6QNZokfgpGLWT4K9PRm8F5ZdzUX8+sqjAQmlMp30LW7lhhAlbprqc dKUAIB1dJwwT2gPsa/ntIf1SZEbMD8FlrAZDDBNZkId/IdgtRUrl9OCPGAwyrRJ7 pA4YxqBQqB1hwL51Dmk1KOlhePIfeDu9DFzUPgKETvuZA6ITmyM/artYaexcpDoF 7pvbLNsNsL7yuNF8y7wCSFj4IP8kPYRCBpmXR4hhugJI15M14dw= =nqUq -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest cleanups from Shuah Khan: - ftrace "requires:" list for simplifying and unifying requirement checks for each test case, adding "requires:" line instead of checking required ftrace interfaces in each test case. - a minor spelling correction patch * tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/ftrace: Support ":README" suffix for requires selftests/ftrace: Support ":tracer" suffix for requires selftests/ftrace: Convert check_filter_file() with requires list selftests/ftrace: Convert required interface checks into requires list selftests/ftrace: Add "requires:" list support selftests/ftrace: Return unsupported for the unconfigured features selftests/ftrace: Allow ":" in description tools: testing: ftrace: trigger: fix spelling mistake |
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David Howells
|
5481fc6eb8 |
afs: Fix hang on rmmod due to outstanding timer
The fileserver probe timer, net->fs_probe_timer, isn't cancelled when
the kafs module is being removed and so the count it holds on
net->servers_outstanding doesn't get dropped..
This causes rmmod to wait forever. The hung process shows a stack like:
afs_purge_servers+0x1b5/0x23c [kafs]
afs_net_exit+0x44/0x6e [kafs]
ops_exit_list+0x72/0x93
unregister_pernet_operations+0x14c/0x1ba
unregister_pernet_subsys+0x1d/0x2a
afs_exit+0x29/0x6f [kafs]
__do_sys_delete_module.isra.0+0x1a2/0x24b
do_syscall_64+0x51/0x95
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fix this by:
(1) Attempting to cancel the probe timer and, if successful, drop the
count that the timer was holding.
(2) Make the timer function just drop the count and not schedule the
prober if the afs portion of net namespace is being destroyed.
Also, whilst we're at it, make the following changes:
(3) Initialise net->servers_outstanding to 1 and decrement it before
waiting on it so that it doesn't generate wake up events by being
decremented to 0 until we're cleaning up.
(4) Switch the atomic_dec() on ->servers_outstanding for ->fs_timer in
afs_purge_servers() to use the helper function for that.
Fixes:
|
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David Howells
|
f8ea5c7bce |
afs: Fix afs_do_lookup() to call correct fetch-status op variant
Fix afs_do_lookup()'s fallback case for when FS.InlineBulkStatus isn't supported by the server. In the fallback, it calls FS.FetchStatus for the specific vnode it's meant to be looking up. Commit |
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Linus Torvalds
|
4333a9b0b6 |
io_uring-5.8-2020-06-19
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Linus Torvalds
|
d2b1c81f5f |
block-5.8-2020-06-19
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Linus Torvalds
|
592be758f1 |
libata-5.8-2020-06-19
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Linus Torvalds
|
62c91ead97 |
drm fixes for 5.8-rc2
i915: - Fix for timeslicing and virtual engines/unpremptable requests (+ 1 dependency patch) - Fixes into TypeC register programming and interrupt storm detecting - Disable DIP on MST ports with the transcoder clock still on - Avoid missing GT workarounds at reset for HSW and older gens - Fix for unwinding multiple requests missing force restore - Fix encoder type check for DDI vswing sequence - Build warning fixes amdgpu: - Fix kvfree/kfree mixup - Fix hawaii device id in powertune configuration - Display FP fixes - Documentation fixes amdkfd: - devcgroup check fix -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJe7Cm0AAoJEAx081l5xIa+keYP/3ieT0ZvTj1A9WUSHjA54YVr y4ifXwo1wtsB8jwdsCLa7gEzDN41tJ6zU4vxOZ4sz8WIgE9ulerM7E6hqJqHm8mt YF8TCOpy7rl/SuMa7NPNFkglJgFGm3uNZU2KUWUpexYQlBc8d3+rPQXEYSvRCvb2 e//h5eKXAWAfMj4ZlYwy721lEyc55agb3FAguRHiVEj+x9TBWbMU6HQzzxhHL6hh 6zjWgJEHD/B/JDtS508bHmI/yCoe21LVENiKyHLpWu2zCNcdqdsQz+d7z2gnR2ir MsebnqdOxlGmR6VdpqPaE3jukL1okH/SEk4akGOOhjlM3U/MmsJz8n22aYsXlzK7 XHvyTjSdO8Spd+taLKEmZkIj++tVFHN9RR4uXbweknsqEhec6rakKFW3fsqhIC7G 9fTWevP5lRyOLD1xqt7aWpGf+21dbcJEtN+Gnrmb+eOl+5WWShS3KE384XZ4k/n1 G7l8ETT1okMdFU7YU9Ws9tAFYsM6bdt5mD2N1g9jIr2L/F78upwzurNMz2FLJUQZ CMsPUIw0luWNSBXi91TjF0Itt1gSy8x8lC/Be3lN94KuvbO6yuUIznO8jshrHcLW T8kzP3IZxCm29pvGBDuA5t3vTI6bTVfLH9vXmAONuPRUQx62XXjrLywGmXYe0C+g uHmfLYRmvHvdru5K+muP =lvAZ -----END PGP SIGNATURE----- Merge tag 'drm-fixes-2020-06-19' of git://anongit.freedesktop.org/drm/drm Pull drm fixes from Dave Airlie: "Just i915 and amd here. i915 has some workaround movement so they get applied at the right times, and a timeslicing fix, along with some display fixes. AMD has a few display floating point fix and a devcgroup fix for amdkfd. i915: - Fix for timeslicing and virtual engines/unpremptable requests (+ 1 dependency patch) - Fixes into TypeC register programming and interrupt storm detecting - Disable DIP on MST ports with the transcoder clock still on - Avoid missing GT workarounds at reset for HSW and older gens - Fix for unwinding multiple requests missing force restore - Fix encoder type check for DDI vswing sequence - Build warning fixes amdgpu: - Fix kvfree/kfree mixup - Fix hawaii device id in powertune configuration - Display FP fixes - Documentation fixes amdkfd: - devcgroup check fix" * tag 'drm-fixes-2020-06-19' of git://anongit.freedesktop.org/drm/drm: (23 commits) drm/amdgpu: fix documentation around busy_percentage drm/amdgpu/pm: update comment to clarify Overdrive interfaces drm/amdkfd: Use correct major in devcgroup check drm/i915/display: Fix the encoder type check drm/i915/icl+: Fix hotplug interrupt disabling after storm detection drm/i915/gt: Move gen4 GT workarounds from init_clock_gating to workarounds drm/i915/gt: Move ilk GT workarounds from init_clock_gating to workarounds drm/i915/gt: Move snb GT workarounds from init_clock_gating to workarounds drm/i915/gt: Move vlv GT workarounds from init_clock_gating to workarounds drm/i915/gt: Move ivb GT workarounds from init_clock_gating to workarounds drm/i915/gt: Move hsw GT workarounds from init_clock_gating to workarounds drm/i915/icl: Disable DIP on MST ports with the transcoder clock still on drm/i915/gt: Incrementally check for rewinding drm/i915/tc: fix the reset of ln0 drm/i915/gt: Prevent timeslicing into unpreemptable requests drm/i915/selftests: Restore to default heartbeat drm/i915: work around false-positive maybe-uninitialized warning drm/i915/pmu: avoid an maybe-uninitialized warning drm/i915/gt: Incorporate the virtual engine into timeslicing drm/amd/display: Rework dsc to isolate FPU operations ... |
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Linus Torvalds
|
672f9255a7 |
An important follow-up for replica reads support that went into -rc1
and two target_copy() fixups. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAl7ssCITHGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHzi1cVB/9V1BPWKdPKiRWaOgYJSd0qk3izSZQp 4U+foILpQi0fo23H5PAINrYEcURFjNxfFF7P9esQQ4i3NhbA/b7/tLu6sSsxq5HQ FoUgYPj5WXKiJ+pF2JayP6lpxGDdUHjWYFBR28P9g9otOepRBkJl91ZuU7Hp9rSp usMSl1+3zJ+HModREk4VmNUgEDW/8DW2EDXXETzoLdhgUXhG+6KYC2qrExrBR7L3 k1V9+zPgZK+qykim0p453eCQbYlO74SKv1/Q7FPqYGGkohyyHaYMqw7/xItbqMPa 5lACBuobQ4YiDfhiNcF15Mr1gZjexYbAcAx799bnbv3z/yTZi9IFszhK =MFh3 -----END PGP SIGNATURE----- Merge tag 'ceph-for-5.8-rc2' of git://github.com/ceph/ceph-client Pull ceph fixes from Ilya Dryomov: "An important follow-up for replica reads support that went into -rc1 and two target_copy() fixups" * tag 'ceph-for-5.8-rc2' of git://github.com/ceph/ceph-client: libceph: don't omit used_replica in target_copy() libceph: don't omit recovery_deletes in target_copy() libceph: move away from global osd_req_flags |
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Linus Torvalds
|
84bc1993e2 |
arm64 fixes for -rc2
- Fix handling of watchpoints triggered by uaccess routines - Fix initialisation of gigantic pages for CMA buffers - Raise minimum clang version for BTI to avoid miscompilation - Fix data race in SVE vector length configuration code - Ensure address tags are ignored in kern_addr_valid() - Dump register state on fatal BTI exception - kexec_file() cleanup to use struct_size() macro -----BEGIN PGP SIGNATURE----- iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAl7sl1IQHHdpbGxAa2Vy bmVsLm9yZwAKCRC3rHDchMFjNNESB/0UhaH4JI3UPu1DAESsHyYqh6Jdb8TljMxd uiAkBT8hJhgq5gUQLBicFpo5AAnEgGuQcG3OMWxWG8PG1MevHemKV1TW38QtbJlA p6jwMriSXiwe6199ImoIH6tujshKnoSeo33B470N6i1TzEz8lmS9ml5v1epIT7q4 1wEPSX+o1Zi/CQKjrfW1UQW7I9C5G26BXusQH4b2Sz8B7RIzHA/+/LqUjcYVtSph yjJn1jHhc0GhC7qZUgea4Rz6WZNGlBebGBksIqssvBNhO/St4UmWGmhiUS3YX7rn cP7DicrrWVwCib2xUr3fwxxPki4rlV+xHIINVINrOwE1BpqRENl5 =Gthp -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "Unfortunately, we still have a number of outstanding issues so there will be more fixes to come, but this lot are a good start. - Fix handling of watchpoints triggered by uaccess routines - Fix initialisation of gigantic pages for CMA buffers - Raise minimum clang version for BTI to avoid miscompilation - Fix data race in SVE vector length configuration code - Ensure address tags are ignored in kern_addr_valid() - Dump register state on fatal BTI exception - kexec_file() cleanup to use struct_size() macro" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints arm64: kexec_file: Use struct_size() in kmalloc() arm64: mm: reserve hugetlb CMA after numa_init arm64: bti: Require clang >= 10.0.1 for in-kernel BTI support arm64: sve: Fix build failure when ARM64_SVE=y and SYSCTL=n arm64: pgtable: Clear the GP bit for non-executable kernel pages arm64: mm: reset address tag set by kasan sw tagging arm64: traps: Dump registers prior to panic() in bad_mode() arm64/sve: Eliminate data races on sve_default_vl docs/arm64: Fix typo'd #define in sve.rst arm64: remove TEXT_OFFSET randomization |
||
Linus Torvalds
|
98b769942c |
Add flex-array size helper
-----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAl7sJLcWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJux3D/9RCaL24L5lNMZrfWo6lHhXUain EdUUdnzKB2uschPXcFPm7olaAGrwh/nlbJc51uKWrdEaLbM2xausC6T+tg5K/fJc 1o/Rhe74GhuMlZqcJwKG90pM/11lHQsoYavNl3SZLiDwgIIXxOzdP/ZMN3K+Ug75 W/5eVhwdU5A87tCXU50UwcAWvLw2kBQzS7HDa4CWuiV4cACNBaTtiUomJ/yCFE5V gZW139HM/XGFKMNxLvICT00ZznePDcvYbXlXdRNGKKC8O8t0Si6Xb7TLMUhcBNIQ Npvz2g+hofhiFlVDMOpOeAxRrkb7gdYaOqTHk9/YcxarsHkJA5EN7HQnjMnNScNf 5HIFnP5IOrcnjA009qM+tvFCMJo3FglBSr3pLCcnUoFwnut7sY8+z67JaeVRp2Hc 3SOcXWamh4HJW+YsDR7bAgBkUPq0FmMY6oGVqIqwTWQJUwGHS4RljFl43HqFn7Fm Bggk1OBjm4Kifj0EwujBdLDNuaaNMb2bmSFr4L6CJcQBU7gOyT87TuSOHR5oI7U7 ywQDr9sQIB70wmQ27z9OqZwEnTIV0LzlD0ZfrhkNS4bcK42livS0qv3hx8YnPaTg a0leNmHB6qwkIxoFdCMY2E6ZmpCPUAwPk8NqTPrPmwfMoDbSlMW/6ENjYSyiFB8r nbpx2KU0JjsRlYfkhA== =94sc -----END PGP SIGNATURE----- Merge tag 'overflow-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull flex-array size helper from Kees Cook: "During the treewide clean-ups of zero-length "flexible arrays", the struct_size() helper was heavily used, but it was noticed that many times it would have been nice to have an additional helper to get the size of just the flexible array itself. This need appears to be even more common when cleaning up the 1-byte array "flexible arrays", so Gustavo implemented it. I'd love to get this landed early so it can be used during the v5.9 dev cycle to ease the 1-byte array cleanups." * tag 'overflow-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: overflow.h: Add flex_array_size() helper |
||
Linus Torvalds
|
98d7e741a0 |
perf tooling fixes for v5.8:
- Update various UAPI headers, some automatically adding support for a new MSR and the faccess2 syscall. - Fix corner case NULL deref in the histograms code. - Fix corner case NULL deref in 'perf stat' aggregation code. - Fix array pointer deref and old style declaration in the parsing of events. - Fix segfault when processing ZSTD compressed perf.data files in 'perf script' due to lack of initialization of the ZSTD library. - Handle __attribute__((user)) in libtraceevent fixing the parsing of syscall tracepoints with user buffers. - Make libtraevent aware of __builtin_expect() appearing in tracepoint fields. - Make the BPF prologue generation use bpf_probe_read_{user,kernel}(). - Fix the '@user' attribute parsing in kprobes variables in 'perf probe'. - Fix error message when asking for -fsanitize=address without required libraries. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Test results: The first ones are container based builds of tools/perf with and without libelf support. Where clang is available, it is also used to build perf with/without libelf, and building with LIBCLANGLLVM=1 (built-in clang) with gcc and clang when clang and its devel libraries are installed. The objtool and samples/bpf/ builds are disabled now that I'm switching from using the sources in a local volume to fetching them from a http server to build it inside the container, to make it easier to build in a container cluster. Those will come back later. Several are cross builds, the ones with -x-ARCH and the android one, and those may not have all the features built, due to lack of multi-arch devel packages, available and being used so far on just a few, like debian:experimental-x-{arm64,mipsel}. The 'perf test' one will perform a variety of tests exercising tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands with a variety of command line event specifications to then intercept the sys_perf_event syscall to check that the perf_event_attr fields are set up as expected, among a variety of other unit tests. Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/ with a variety of feature sets, exercising the build with an incomplete set of features as well as with a complete one. It is planned to have it run on each of the containers mentioned above, using some container orchestration infrastructure. Get in contact if interested in helping having this in place. Ubuntu 19.10 and Debian experimental is failing when linking against libllvm, which isn't the default, needs to be investigated, haven't tested with CC=gcc, but should be the same problem: + make ARCH= CROSS_COMPILE= EXTRA_CFLAGS= LIBCLANGLLVM=1 -C /git/linux/tools/perf O=/tmp/build/perf CC=clang ... /usr/bin/ld: /usr/lib/llvm-9/lib/libclangAnalysis.a(ExprMutationAnalyzer.cpp.o): in function `clang::ast_matchers::internal::matcher_ignoringImpCasts0Matcher::matches(clang::Expr const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const': (.text._ZNK5clang12ast_matchers8internal32matcher_ignoringImpCasts0Matcher7matchesERKNS_4ExprEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE[_ZNK5clang12ast_matchers8internal32matcher_ignoringImpCasts0Matcher7matchesERKNS_4ExprEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE]+0x43): undefined reference to `clang::ast_matchers::internal::DynTypedMatcher::matches(clang::ast_type_traits::DynTypedNode const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const' /usr/bin/ld: /usr/lib/llvm-9/lib/libclangAnalysis.a(ExprMutationAnalyzer.cpp.o): in function `clang::ast_matchers::internal::matcher_hasLoopVariable0Matcher::matches(clang::CXXForRangeStmt const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const': (.text._ZNK5clang12ast_matchers8internal31matcher_hasLoopVariable0Matcher7matchesERKNS_15CXXForRangeStmtEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE[_ZNK5clang12ast_matchers8internal31matcher_hasLoopVariable0Matcher7matchesERKNS_15CXXForRangeStmtEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE]+0x48): undefined reference to `clang::ast_matchers::internal::DynTypedMatcher::matches(clang::ast_type_traits::DynTypedNode const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const' ... It builds ok with the default set of options. And with the newest gcc 10.1.1 in fedora rawhide, same version but slightly newer build than the one in fedora 32, it is failing with: util/scripting-engines/trace-event-python.c: In function 'python_start_script': util/scripting-engines/trace-event-python.c:1595:2: error: 'visibility' attribute ignored [-Werror=attributes] 1595 | PyMODINIT_FUNC (*initfunc)(void); | ^~~~~~~~~~~~~~ Will be fixed soon. # export PERF_TARBALL=http://192.168.124.1/perf/perf-5.8.0-rc1.tar.xz # dm 1 alpine:3.4 : Ok gcc (Alpine 5.3.0) 5.3.0, clang version 3.8.0 (tags/RELEASE_380/final) 2 alpine:3.5 : Ok gcc (Alpine 6.2.1) 6.2.1 20160822, clang version 3.8.1 (tags/RELEASE_381/final) 3 alpine:3.6 : Ok gcc (Alpine 6.3.0) 6.3.0, clang version 4.0.0 (tags/RELEASE_400/final) 4 alpine:3.7 : Ok gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.0 (tags/RELEASE_500/final) (based on LLVM 5.0.0) 5 alpine:3.8 : Ok gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.1 (tags/RELEASE_501/final) (based on LLVM 5.0.1) 6 alpine:3.9 : Ok gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 5.0.1 (tags/RELEASE_502/final) (based on LLVM 5.0.1) 7 alpine:3.10 : Ok gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 8.0.0 (tags/RELEASE_800/final) (based on LLVM 8.0.0) 8 alpine:3.11 : Ok gcc (Alpine 9.2.0) 9.2.0, Alpine clang version 9.0.0 (https://git.alpinelinux.org/aports f7f0d2c2b8bcd6a5843401a9a702029556492689) (based on LLVM 9.0.0) 9 alpine:3.12 : Ok gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (https://gitlab.alpinelinux.org/alpine/aports.git 7445adce501f8473efdb93b17b5eaf2f1445ed4c) 10 alpine:edge : Ok gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (git://git.alpinelinux.org/aports 7445adce501f8473efdb93b17b5eaf2f1445ed4c) 11 alt:p8 : Ok x86_64-alt-linux-gcc (GCC) 5.3.1 20151207 (ALT p8 5.3.1-alt3.M80P.1), clang version 3.8.0 (tags/RELEASE_380/final) 12 alt:p9 : Ok x86_64-alt-linux-gcc (GCC) 8.4.1 20200305 (ALT p9 8.4.1-alt0.p9.1), clang version 7.0.1 13 alt:sisyphus : Ok x86_64-alt-linux-gcc (GCC) 9.2.1 20200123 (ALT Sisyphus 9.2.1-alt3), clang version 10.0.0 14 amazonlinux:1 : Ok gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2), clang version 3.6.2 (tags/RELEASE_362/final) 15 amazonlinux:2 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 7.0.1 (Amazon Linux 2 7.0.1-1.amzn2.0.2) 16 android-ndk:r12b-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease) 17 android-ndk:r15c-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease) 18 centos:5 : Ok gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55) 19 centos:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23) 20 centos:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39) 21 centos:8 : Ok gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4), clang version 8.0.1 (Red Hat 8.0.1-1.module_el8.1.0+215+a01033fb) 22 clearlinux:latest : Ok gcc (Clear Linux OS for Intel Architecture) 9.3.1 20200501 releases/gcc-9.3.0-196-gcb2c76c8b1, clang version 10.0.0 23 debian:8 : Ok gcc (Debian 4.9.2-10+deb8u2) 4.9.2, Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0) 24 debian:9 : Ok gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, clang version 3.8.1-24 (tags/RELEASE_381/final) 25 debian:10 : Ok gcc (Debian 8.3.0-6) 8.3.0, clang version 7.0.1-8 (tags/RELEASE_701/final) 26 debian:experimental : FAIL gcc (Debian 9.3.0-13) 9.3.0, clang version 9.0.1-12 27 debian:experimental-x-arm64 : Ok aarch64-linux-gnu-gcc (Debian 9.3.0-8) 9.3.0 28 debian:experimental-x-mips : Ok mips-linux-gnu-gcc (Debian 8.3.0-19) 8.3.0 29 debian:experimental-x-mips64 : Ok mips64-linux-gnuabi64-gcc (Debian 9.3.0-8) 9.3.0 30 debian:experimental-x-mipsel : Ok mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909 31 fedora:20 : Ok gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7) 32 fedora:22 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.5.0 (tags/RELEASE_350/final) 33 fedora:23 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.7.0 (tags/RELEASE_370/final) 34 fedora:24 : Ok gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1), clang version 3.8.1 (tags/RELEASE_381/final) 35 fedora:24-x-ARC-uClibc : Ok arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710 36 fedora:25 : Ok gcc (GCC) 6.4.1 20170727 (Red Hat 6.4.1-1), clang version 3.9.1 (tags/RELEASE_391/final) 37 fedora:26 : Ok gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2), clang version 4.0.1 (tags/RELEASE_401/final) 38 fedora:27 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 5.0.2 (tags/RELEASE_502/final) 39 fedora:28 : Ok gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 6.0.1 (tags/RELEASE_601/final) 40 fedora:29 : Ok gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 7.0.1 (Fedora 7.0.1-6.fc29) 41 fedora:30 : Ok gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1), clang version 8.0.0 (Fedora 8.0.0-3.fc30) 42 fedora:30-x-ARC-glibc : Ok arc-linux-gcc (ARC HS GNU/Linux glibc toolchain 2019.03-rc1) 8.3.1 20190225 43 fedora:30-x-ARC-uClibc : Ok arc-linux-gcc (ARCv2 ISA Linux uClibc toolchain 2019.03-rc1) 8.3.1 20190225 44 fedora:31 : Ok gcc (GCC) 9.3.1 20200408 (Red Hat 9.3.1-2), clang version 9.0.1 (Fedora 9.0.1-2.fc31) 45 fedora:32 : Ok gcc (GCC) 10.1.1 20200507 (Red Hat 10.1.1-1), clang version 10.0.0 (Fedora 10.0.0-1.fc32) 46 fedora:rawhide : FAIL gcc (GCC) 10.1.1 20200507 (Red Hat 10.1.1-1), clang version 10.0.0 (Fedora 10.0.0-4.fc33) 47 gentoo-stage3-amd64:latest : Ok gcc (Gentoo 9.2.0-r2 p3) 9.2.0 48 mageia:5 : Ok gcc (GCC) 4.9.2, clang version 3.5.2 (tags/RELEASE_352/final) 49 mageia:6 : Ok gcc (Mageia 5.5.0-1.mga6) 5.5.0, clang version 3.9.1 (tags/RELEASE_391/final) 50 mageia:7 : Ok gcc (Mageia 8.3.1-0.20190524.1.mga7) 8.3.1 20190524, clang version 8.0.0 (Mageia 8.0.0-1.mga7) 51 manjaro:latest : Ok gcc (GCC) 9.2.0, clang version 9.0.0 (tags/RELEASE_900/final) 52 openmandriva:cooker : Ok gcc (GCC) 10.0.0 20200502 (OpenMandriva), clang version 10.0.1 53 opensuse:15.0 : Ok gcc (SUSE Linux) 7.4.1 20190424 [gcc-7-branch revision 270538], clang version 5.0.1 (tags/RELEASE_501/final 312548) 54 opensuse:15.1 : Ok gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238) 55 opensuse:15.2 : Ok gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238) 56 opensuse:42.3 : Ok gcc (SUSE Linux) 4.8.5, clang version 3.8.0 (tags/RELEASE_380/final 262553) 57 opensuse:tumbleweed : Ok gcc (SUSE Linux) 9.3.1 20200406 [revision 6db837a5288ee3ca5ec504fbd5a765817e556ac2], clang version 10.0.0 58 oraclelinux:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23.0.1) 59 oraclelinux:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39.0.3) 60 oraclelinux:8 : Ok gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5.0.3), clang version 9.0.1 (Red Hat 9.0.1-2.0.1.module+el8.2.0+5599+9ed9ef6d) 61 ubuntu:12.04 : Ok gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0) 62 ubuntu:14.04 : Ok gcc (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4 63 ubuntu:16.04 : Ok gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609, clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final) 64 ubuntu:16.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609 65 ubuntu:16.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609 66 ubuntu:16.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609 67 ubuntu:16.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609 68 ubuntu:16.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609 69 ubuntu:16.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609 70 ubuntu:18.04 : Ok gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0, clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final) 71 ubuntu:18.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0 72 ubuntu:18.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0 73 ubuntu:18.04-x-m68k : Ok m68k-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 74 ubuntu:18.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0 75 ubuntu:18.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0 76 ubuntu:18.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 77 ubuntu:18.04-x-riscv64 : Ok riscv64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 78 ubuntu:18.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 79 ubuntu:18.04-x-sh4 : Ok sh4-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0 80 ubuntu:18.04-x-sparc64 : Ok sparc64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 81 ubuntu:18.10 : Ok gcc (Ubuntu 8.3.0-6ubuntu1~18.10.1) 8.3.0, clang version 7.0.0-3 (tags/RELEASE_700/final) 82 ubuntu:19.04 : Ok gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0, clang version 8.0.0-3 (tags/RELEASE_800/final) 83 ubuntu:19.04-x-alpha : Ok alpha-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0 84 ubuntu:19.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 8.3.0-6ubuntu1) 8.3.0 85 ubuntu:19.04-x-hppa : Ok hppa-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0 86 ubuntu:19.10 : FAIL gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008, clang version 9.0.0-2 (tags/RELEASE_900/final) 87 ubuntu:20.04 : Ok gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0, clang version 10.0.0-4ubuntu1 # # uname -a Linux five 5.7.0 #1 SMP Mon Jun 1 12:29:31 -03 2020 x86_64 x86_64 x86_64 GNU/Linux # git log --oneline -1 |
||
Atish Patra
|
0e2c09011d
|
RISC-V: Acquire mmap lock before invoking walk_page_range
As per walk_page_range documentation, mmap lock should be acquired by the caller before invoking walk_page_range. mmap_assert_locked gets triggered without that. The details can be found here. http://lists.infradead.org/pipermail/linux-riscv/2020-June/010335.html Fixes: 395a21ff859c(riscv: add ARCH_HAS_SET_DIRECT_MAP support) Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Michel Lespinasse <walken@google.com> Reviewed-by: Zong Li <zong.li@sifive.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com> |
||
Yash Shah
|
e0d17c842c
|
RISC-V: Don't allow write+exec only page mapping request in mmap
As per the table 4.4 of version "20190608-Priv-MSU-Ratified" of the RISC-V instruction set manual[0], the PTE permission bit combination of "write+exec only" is reserved for future use. Hence, don't allow such mapping request in mmap call. An issue is been reported by David Abdurachmanov, that while running stress-ng with "sysbadaddr" argument, RCU stalls are observed on RISC-V specific kernel. This issue arises when the stress-sysbadaddr request for pages with "write+exec only" permission bits and then passes the address obtain from this mmap call to various system call. For the riscv kernel, the mmap call should fail for this particular combination of permission bits since it's not valid. [0]: http://dabbelt.com/~palmer/keep/riscv-isa-manual/riscv-privileged-20190608-1.pdf Signed-off-by: Yash Shah <yash.shah@sifive.com> Reported-by: David Abdurachmanov <david.abdurachmanov@gmail.com> [Palmer: Refer to the latest ISA specification at the only link I could find, and update the terminology.] Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com> |
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Dave Airlie
|
8a7a3d1d0d |
Merge tag 'amd-drm-fixes-5.8-2020-06-17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
amd-drm-fixes-5.8-2020-06-17: amdgpu: - Fix kvfree/kfree mixup - Fix hawaii device id in powertune configuration - Display FP fixes - Documentation fixes amdkfd: - devcgroup check fix Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200617220733.3773183-1-alexander.deucher@amd.com |
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Dave Airlie
|
7ac98ff024 |
Merge tag 'drm-intel-fixes-2020-06-18' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix for timeslicing and virtual engines/unpremptable requests (+ 1 dependency patch) - Fixes into TypeC register programming and interrupt storm detecting - Disable DIP on MST ports with the transcoder clock still on - Avoid missing GT workarounds at reset for HSW and older gens - Fix for unwinding multiple requests missing force restore - Fix encoder type check for DDI vswing sequence - Build warning fixes Signed-off-by: Dave Airlie <airlied@redhat.com> From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200618124659.GA12342@jlahtine-desk.ger.corp.intel.com |
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Linus Torvalds
|
5e857ce6ea |
Merge branch 'hch' (maccess patches from Christoph Hellwig)
Merge non-faulting memory access cleanups from Christoph Hellwig: "Andrew and I decided to drop the patches implementing your suggested rename of the probe_kernel_* and probe_user_* helpers from -mm as there were way to many conflicts. After -rc1 might be a good time for this as all the conflicts are resolved now" This also adds a type safety checking patch on top of the renaming series to make the subtle behavioral difference between 'get_user()' and 'get_kernel_nofault()' less potentially dangerous and surprising. * emailed patches from Christoph Hellwig <hch@lst.de>: maccess: make get_kernel_nofault() check for minimal type compatibility maccess: rename probe_kernel_address to get_kernel_nofault maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault |
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Linus Torvalds
|
0c389d89ab |
maccess: make get_kernel_nofault() check for minimal type compatibility
Now that we've renamed probe_kernel_address() to get_kernel_nofault() and made it look and behave more in line with get_user(), some of the subtle type behavior differences end up being more obvious and possibly dangerous. When you do get_user(val, user_ptr); the type of the access comes from the "user_ptr" part, and the above basically acts as val = *user_ptr; by design (except, of course, for the fact that the actual dereference is done with a user access). Note how in the above case, the type of the end result comes from the pointer argument, and then the value is cast to the type of 'val' as part of the assignment. So the type of the pointer is ultimately the more important type both for the access itself. But 'get_kernel_nofault()' may now _look_ similar, but it behaves very differently. When you do get_kernel_nofault(val, kernel_ptr); it behaves like val = *(typeof(val) *)kernel_ptr; except, of course, for the fact that the actual dereference is done with exception handling so that a faulting access is suppressed and returned as the error code. But note how different the casting behavior of the two superficially similar accesses are: one does the actual access in the size of the type the pointer points to, while the other does the access in the size of the target, and ignores the pointer type entirely. Actually changing get_kernel_nofault() to act like get_user() is almost certainly the right thing to do eventually, but in the meantime this patch adds logit to at least verify that the pointer type is compatible with the type of the result. In many cases, this involves just casting the pointer to 'void *' to make it obvious that the type of the pointer is not the important part. It's not how 'get_user()' acts, but at least the behavioral difference is now obvious and explicit. Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Hellwig
|
25f12ae45f |
maccess: rename probe_kernel_address to get_kernel_nofault
Better describe what this helper does, and match the naming of copy_from_kernel_nofault. Also switch the argument order around, so that it acts and looks like get_user(). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Luc Van Oostenryck
|
670d0a4b10 |
sparse: use identifiers to define address spaces
Currently, address spaces in warnings are displayed as '<asn:X>' with 'X' being the address space's arbitrary number. But since sparse v0.6.0-rc1 (late December 2018), sparse allows you to define the address spaces using an identifier instead of a number. This identifier is then directly used in the warnings. So, use the identifiers '__user', '__iomem', '__percpu' & '__rcu' for the corresponding address spaces. The default address space, __kernel, being not displayed in warnings, stays defined as '0'. With this change, warnings that used to be displayed as: cast removes address space '<asn:1>' of expression ... void [noderef] <asn:2> * will now be displayed as: cast removes address space '__user' of expression ... void [noderef] __iomem * This also moves the __kernel annotation to be the first one, since it is quite different from the others because it's the default one, and so: - it's never displayed - it's normally not needed, nor in type annotations, nor in cast between address spaces. The only time it's needed is when it's combined with a typeof to express "the same type as this one but without the address space" - it can't be defined with a name, '0' must be used. So, it seemed strange to me to have it in the middle of the other ones. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Zheng Bin
|
3373a3461a |
block: make function 'kill_bdev' static
kill_bdev does not have any external user, so make it static. Signed-off-by: Zheng Bin <zhengbin13@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Zheng Bin
|
f4bd34b139 |
loop: replace kill_bdev with invalidate_bdev
When a filesystem is mounted on a loop device and on a loop ioctl
LOOP_SET_STATUS64, because of kill_bdev, buffer_head mappings are getting
destroyed.
kill_bdev
truncate_inode_pages
truncate_inode_pages_range
do_invalidatepage
block_invalidatepage
discard_buffer -->clear BH_Mapped flag
sb_bread
__bread_gfp
bh = __getblk_gfp
-->discard_buffer clear BH_Mapped flag
__bread_slow
submit_bh
submit_bh_wbc
BUG_ON(!buffer_mapped(bh)) --> hit this BUG_ON
Fixes:
|
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Kai-Heng Feng
|
b5292111de |
libata: Use per port sync for detach
Commit |
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Andy Shevchenko
|
bc163c2046 |
partitions/ldm: Replace uuid_copy() with import_uuid() where it makes sense
There is a specific API to treat raw data as UUID, i.e. import_uuid(). Use it instead of uuid_copy() with explicit casting. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Xiaoguang Wang
|
6f2cc1664d |
io_uring: fix possible race condition against REQ_F_NEED_CLEANUP
In io_read() or io_write(), when io request is submitted successfully, it'll go through the below sequence: kfree(iovec); req->flags &= ~REQ_F_NEED_CLEANUP; return ret; But clearing REQ_F_NEED_CLEANUP might be unsafe. The io request may already have been completed, and then io_complete_rw_iopoll() and io_complete_rw() will be called, both of which will also modify req->flags if needed. This causes a race condition, with concurrent non-atomic modification of req->flags. To eliminate this race, in io_read() or io_write(), if io request is submitted successfully, we don't remove REQ_F_NEED_CLEANUP flag. If REQ_F_NEED_CLEANUP is set, we'll leave __io_req_aux_free() to the iovec cleanup work correspondingly. Cc: stable@vger.kernel.org Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Tiezhu Yang
|
6a1515c962 |
perf build: Fix error message when asking for -fsanitize=address without required libraries
When build perf with ASan or UBSan, if libasan or libubsan can not find, the feature-glibc is 0 and there exists the following error log which is wrong, because we can find gnu/libc-version.h in /usr/include, glibc-devel is also installed. [yangtiezhu@linux perf]$ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address' BUILD: Doing 'make -j4' parallel build HOSTCC fixdep.o HOSTLD fixdep-in.o LINK fixdep <stdin>:1:0: warning: -fsanitize=address and -fsanitize=kernel-address are not supported for this target <stdin>:1:0: warning: -fsanitize=address not supported for this target Auto-detecting system features: ... dwarf: [ OFF ] ... dwarf_getlocations: [ OFF ] ... glibc: [ OFF ] ... gtk2: [ OFF ] ... libaudit: [ OFF ] ... libbfd: [ OFF ] ... libcap: [ OFF ] ... libelf: [ OFF ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libcrypto: [ OFF ] ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ OFF ] ... zlib: [ OFF ] ... lzma: [ OFF ] ... get_cpuid: [ OFF ] ... bpf: [ OFF ] ... libaio: [ OFF ] ... libzstd: [ OFF ] ... disassembler-four-args: [ OFF ] Makefile.config:393: *** No gnu/libc-version.h found, please install glibc-dev[el]. Stop. Makefile.perf:224: recipe for target 'sub-make' failed make[1]: *** [sub-make] Error 2 Makefile:69: recipe for target 'all' failed make: *** [all] Error 2 [yangtiezhu@linux perf]$ ls /usr/include/gnu/libc-version.h /usr/include/gnu/libc-version.h After install libasan and libubsan, the feature-glibc is 1 and the build process is success, so the cause is related with libasan or libubsan, we should check them and print an error log to reflect the reality. Committer testing: $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address' O=/tmp/build/perf -C tools/perf/ install-bin make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j12' parallel build HOSTCC /tmp/build/perf/fixdep.o HOSTLD /tmp/build/perf/fixdep-in.o LINK /tmp/build/perf/fixdep Auto-detecting system features: ... dwarf: [ OFF ] ... dwarf_getlocations: [ OFF ] ... glibc: [ OFF ] ... gtk2: [ OFF ] ... libbfd: [ OFF ] ... libcap: [ OFF ] ... libelf: [ OFF ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libcrypto: [ OFF ] ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ OFF ] ... zlib: [ OFF ] ... lzma: [ OFF ] ... get_cpuid: [ OFF ] ... bpf: [ OFF ] ... libaio: [ OFF ] ... libzstd: [ OFF ] ... disassembler-four-args: [ OFF ] Makefile.config:401: *** No libasan found, please install libasan. Stop. make[1]: *** [Makefile.perf:231: sub-make] Error 2 make: *** [Makefile:70: all] Error 2 make: Leaving directory '/home/acme/git/perf/tools/perf' $ $ $ sudo dnf install libasan <SNIP> Installed: libasan-9.3.1-2.fc31.x86_64 $ $ $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address' O=/tmp/build/perf -C tools/perf/ install-bin make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j12' parallel build Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libbfd: [ on ] ... libcap: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... numa_num_possible_cpus: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] ... libzstd: [ on ] ... disassembler-four-args: [ on ] <SNIP> CC /tmp/build/perf/util/pmu-flex.o FLEX /tmp/build/perf/util/expr-flex.c CC /tmp/build/perf/util/expr-bison.o CC /tmp/build/perf/util/expr.o CC /tmp/build/perf/util/expr-flex.o CC /tmp/build/perf/util/parse-events-flex.o CC /tmp/build/perf/util/parse-events.o LD /tmp/build/perf/util/intel-pt-decoder/perf-in.o LD /tmp/build/perf/util/perf-in.o LD /tmp/build/perf/perf-in.o LINK /tmp/build/perf/perf <SNIP> INSTALL python-scripts INSTALL perf_completion-script INSTALL perf-tip make: Leaving directory '/home/acme/git/perf/tools/perf' $ ldd ~/bin/perf | grep asan libasan.so.5 => /lib64/libasan.so.5 (0x00007f0904164000) $ And if we rebuild without -fsanitize-address: $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf $ make O=/tmp/build/perf -C tools/perf/ install-bin make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j12' parallel build HOSTCC /tmp/build/perf/fixdep.o HOSTLD /tmp/build/perf/fixdep-in.o LINK /tmp/build/perf/fixdep Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libbfd: [ on ] ... libcap: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... numa_num_possible_cpus: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] ... libzstd: [ on ] ... disassembler-four-args: [ on ] GEN /tmp/build/perf/common-cmds.h CC /tmp/build/perf/exec-cmd.o <SNIP> INSTALL perf_completion-script INSTALL perf-tip make: Leaving directory '/home/acme/git/perf/tools/perf' $ ldd ~/bin/perf | grep asan $ Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: tiezhu yang <yangtiezhu@loongson.cn> Cc: xuefeng li <lixuefeng@loongson.cn> Link: http://lore.kernel.org/lkml/1592445961-28044-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Steven Rostedt (VMware)
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1b20d9491c |
tools lib traceevent: Add handler for __builtin_expect()
In order to move pointer checks like IS_ERR_VALUE() out of the hotpath and into the reader path of a trace event, user space tools need to be able to parse that. IS_ERR_VALUE() is defined as: #define IS_ERR_VALUE() unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) Which eventually turns into: __builtin_expect(!!((unsigned long)(void *)(x) >= (unsigned long)-4095), 0) Now the traceevent parser can handle most of that except for the __builtin_expect(), which needs to be added. Link: https://lore.kernel.org/linux-mm/20200320055823.27089-3-jaewon31.kim@samsung.com/ Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jaewon Kim <jaewon31.kim@samsung.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kees Kook <keescook@chromium.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: linux-mm@kvack.org Cc: linux-trace-devel@vger.kernel.org Link: http://lore.kernel.org/lkml/20200324200956.821799393@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Steven Rostedt (VMware)
|
74621d929d |
tools lib traceevent: Handle __attribute__((user)) in field names
Commit
|
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Steven Rostedt (VMware)
|
27d4d336f2 |
tools lib traceevent: Add append() function helper for appending strings
There's several locations that open code realloc and strcat() to append text to strings. Add an append() function that takes a delimiter and a string to append to another string. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jaewon Lim <jaewon31.kim@samsung.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kees Kook <keescook@chromium.org> Cc: linux-mm@kvack.org Cc: linux-trace-devel@vger.kernel.org Cc: Namhyung Kim <namhyung@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Link: http://lore.kernel.org/lkml/20200324200956.515118403@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Will Deacon
|
24ebec25fb |
arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
Unprivileged memory accesses generated by the so-called "translated"
instructions (e.g. STTR) at EL1 can cause EL0 watchpoints to fire
unexpectedly if kernel debugging is enabled. In such cases, the
hw_breakpoint logic will invoke the user overflow handler which will
typically raise a SIGTRAP back to the current task. This is futile when
returning back to the kernel because (a) the signal won't have been
delivered and (b) userspace can't handle the thing anyway.
Avoid invoking the user overflow handler for watchpoints triggered by
kernel uaccess routines, and instead single-step over the faulting
instruction as we would if no overflow handler had been installed.
(Fixes tag identifies the introduction of unprivileged memory accesses,
which exposed this latent bug in the hw_breakpoint code)
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Fixes:
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Gustavo A. R. Silva
|
bf508ec95c |
arm64: kexec_file: Use struct_size() in kmalloc()
Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200617213407.GA1385@embeddedor Signed-off-by: Will Deacon <will@kernel.org> |
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Barry Song
|
618e07865b |
arm64: mm: reserve hugetlb CMA after numa_init
hugetlb_cma_reserve() is called at the wrong place. numa_init has not been
done yet. so all reserved memory will be located at node0.
Fixes:
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Weiping Zhang
|
fe35ec58f0 |
block: update hctx map when use multiple maps
There is an issue when tune the number for read and write queues, if the total queue count was not changed. The hctx->type cannot be updated, since __blk_mq_update_nr_hw_queues will return directly if the total queue count has not been changed. Reproduce: dmesg | grep "default/read/poll" [ 2.607459] nvme nvme0: 48/0/0 default/read/poll queues cat /sys/kernel/debug/block/nvme0n1/hctx*/type | sort | uniq -c 48 default tune the write queues to 24: echo 24 > /sys/module/nvme/parameters/write_queues echo 1 > /sys/block/nvme0n1/device/reset_controller dmesg | grep "default/read/poll" [ 433.547235] nvme nvme0: 24/24/0 default/read/poll queues cat /sys/kernel/debug/block/nvme0n1/hctx*/type | sort | uniq -c 48 default The driver's hardware queue mapping is not same as block layer. Signed-off-by: Weiping Zhang <zhangweiping@didiglobal.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Alex Deucher
|
da9cebe169 |
drm/amdgpu: fix documentation around busy_percentage
Add rename the gpu busy percentage for consistency and add the mem busy percentage documentation. Reviewed-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Nirmoy Das <nirmoy.das@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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Alex Deucher
|
7386f5c9c8 |
drm/amdgpu/pm: update comment to clarify Overdrive interfaces
Vega10 and previous asics use one interface, vega20 and newer use another. Reviewed-by: Evan Quan <evan.quan@amd.com> Acked-by: Nirmoy Das <nirmoy.das@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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Lorenz Brun
|
99c7b30947 |
drm/amdkfd: Use correct major in devcgroup check
The existing code used the major version number of the DRM driver
instead of the device major number of the DRM subsystem for
validating access for a devices cgroup.
This meant that accesses allowed by the devices cgroup weren't
permitted and certain accesses denied by the devices cgroup were
permitted (if they matched the wrong major device number).
Signed-off-by: Lorenz Brun <lorenz@brun.one>
Fixes:
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Jens Axboe
|
56952e91ac |
io_uring: reap poll completions while waiting for refs to drop on exit
If we're doing polled IO and end up having requests being submitted async, then completions can come in while we're waiting for refs to drop. We need to reap these manually, as nobody else will be looking for them. Break the wait into 1/20th of a second time waits, and check for done poll completions if we time out. Otherwise we can have done poll completions sitting in ctx->poll_list, which needs us to reap them but we're just waiting for them. Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Dmitry V. Levin
|
b3583fca5f |
s390: fix syscall_get_error for compat processes
If both the tracer and the tracee are compat processes, and gprs[2] is assigned a value by __poke_user_compat, then the higher 32 bits of gprs[2] are cleared, IS_ERR_VALUE() always returns false, and syscall_get_error() always returns 0. Fix the implementation by sign-extending the value for compat processes the same way as x86 implementation does. The bug was exposed to user space by commit |
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Julian Wiedmann
|
c920c54528 |
s390/qdio: warn about unexpected SLSB states
The way we produce SBALs to the device (first update q->nr_buf_used, then update the SLSB) should ensure that we never see some of the SLSB states when scanning the queue for progress. So make some noise if we do, this implies a bug in our SBAL tracking. Also tweak the WARN msg to provide more information. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Julian Wiedmann
|
3d6c6f20d9 |
s390/qdio: clean up usage of qdio_data
This removes the last remaining accesses to ->qdio_data from internal code. Just pass the qdio_irq struct where needed instead. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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Jens Axboe
|
9d8426a091 |
io_uring: acquire 'mm' for task_work for SQPOLL
If we're unlucky with timing, we could be running task_work after having dropped the memory context in the sq thread. Since dropping the context requires a runnable task state, we cannot reliably drop it as part of our check-for-work loop in io_sq_thread(). Instead, abstract out the mm acquire for the sq thread into a helper, and call it from the async task work handler. Cc: stable@vger.kernel.org # v5.7 Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Xiaoguang Wang
|
bbde017a32 |
io_uring: add memory barrier to synchronize io_kiocb's result and iopoll_completed
In io_complete_rw_iopoll(), stores to io_kiocb's result and iopoll completed are two independent store operations, to ensure that once iopoll_completed is ture and then req->result must been perceived by the cpu executing io_do_iopoll(), proper memory barrier should be used. And in io_do_iopoll(), we check whether req->result is EAGAIN, if it is, we'll need to issue this io request using io-wq again. In order to just issue a single smp_rmb() on the completion side, move the re-submit work to io_iopoll_complete(). Cc: stable@vger.kernel.org Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> [axboe: don't set ->iopoll_completed for -EAGAIN retry] Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Xiaoguang Wang
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2d7d67920e |
io_uring: don't fail links for EAGAIN error in IOPOLL mode
In IOPOLL mode, for EAGAIN error, we'll try to submit io request again using io-wq, so don't fail rest of links if this io request has links. Cc: stable@vger.kernel.org Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Linus Torvalds
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1b50440210 |
dma-mapping fixes for 5.8
- fixes for the SEV atomic pool (Geert Uytterhoeven and David Rientjes) -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAl7pxQwLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYN7kg/9F/S+fE587iJhn+6LbJHyNiAWtASi+cogBoO+Qdx/ GDby8YP+s2+6hxIskavfdCSzY6W3UbCslgwxeZNKD60semb8BacAtf55N2PEK0/H UE8J9d/EInbe1ehrJvd7xCcuWxkesHGa/zcFbMBPvXxphX6SNfgPV0fdgg3UuWM9 ZxRPENA14hXOF2ehKnbQNHcgodOm6SGM22PEk3g8GqASc2zCL+E+CVcRVFgoYmzw BgRgv5CaaHCHGvmWWtN4wWNmOm5YCqYmMuEAElbuWhY6VhcPVirMVtLju+3RfSmY 1QEQQ0jQRtlQe9SuqhUPiegtReFMIvwC0Aoip7FaCSVMMean6uSzk3ubapkigCza r5dwG6RiLzVpRJyoYbDhCHh7gOUsXTMXqUzy33Jr5bTbGSJcelbycehL7gP9Qzag fFQ9Yep+BLDYESf7H5KzhDv9siZqGX2kXj3Z/gJGGMjkCUeAKNviRsi9t/IhQuzt cVAJCcU9vLJk2MJRuQ0P/7lCDvUIR4yGalN9Jl9J1ZTsVR7go330RVvonPhlTcXX 9HrroqzSkqnLfaUFB3ml3LHj4SqygfUGtjbJ6qxkXxrChMfySe/VWbBrmOVUlta3 SfKfXRcEYeHlgS7TtkxHkstaXfVA+fKN7V//PoycP9+rvoX74e2h++ujUY9kf8xJ QPQ= =uKpw -----END PGP SIGNATURE----- Merge tag 'dma-mapping-5.8-3' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fixes from Christoph Hellwig: "Fixes for the SEV atomic pool (Geert Uytterhoeven and David Rientjes)" * tag 'dma-mapping-5.8-3' of git://git.infradead.org/users/hch/dma-mapping: dma-pool: decouple DMA_REMAP from DMA_COHERENT_POOL dma-pool: fix too large DMA pools on medium memory size systems |
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Christoph Hellwig
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c0ee37e85e |
maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault
Better describe what these functions do. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Hellwig
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fe557319aa |
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
Better describe what these functions do. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Arnaldo Carvalho de Melo
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0e093c77c5 |
tools headers UAPI: Sync linux/fs.h with the kernel sources
To pick the changes from:
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Arnaldo Carvalho de Melo
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f64925c1eb |
tools include UAPI: Sync linux/vhost.h with the kernel sources
To get the changes in:
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Arnaldo Carvalho de Melo
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25ca7e5c0b |
tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:
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