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Message-ID: <CA+G9fYvF3cyrY+-iw_SZtpN-i2qA2BruHg4M=QYECU2-dNdsMw@mail.gmail.com>
Date: Fri, 12 Jun 2020 00:26:10 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, x86@...nel.org
Cc: cj.chengjian@...wei.com,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
Thomas Gleixner <tglx@...utronix.de>,
Andy Lutomirski <luto@...nel.org>,
Minchan Kim <minchan@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Michel Lespinasse <walken@...gle.com>,
lkft-triage@...ts.linaro.org,
Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Perf: WARNING: arch/x86/entry/common.c:624 idtentry_exit_cond_rcu+0x92/0xc0
While running perf test and selftest x86 single_step_syscall_32 on
i386 kernel linux
next 5.7.0-next-20200610 kernel warning noticed.
steps to reproduce:
--------------------------
perf test
and
cd /opt/kselftests/default-in-kernel/x86
./single_step_syscall_32
perf warning log:
----------------------
[ 57.260865] ------------[ cut here ]------------
[ 57.266576] IRQs not disabled as expected
[ 57.270583] WARNING: CPU: 1 PID: 500 at
/usr/src/kernel/arch/x86/entry/common.c:624
idtentry_exit_cond_rcu+0x92/0xc0
[ 57.281092] Modules linked in: x86_pkg_temp_thermal fuse
[ 57.286406] CPU: 1 PID: 500 Comm: perf Not tainted 5.7.0-next-20200610 #1
[ 57.293190] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.2 05/23/2018
[ 57.300577] EIP: idtentry_exit_cond_rcu+0x92/0xc0
[ 57.305280] Code: 8b 89 d8 05 00 00 85 c9 74 ae 80 3d b1 64 2c d4
00 75 a5 68 94 2d fb d3 89 55 f8 89 45 fc c6 05 b1 64 2c d4 01 e8 8e
f5 2b ff <0f> 0b 58 8b 55 f8 8b 45 fc eb 83 8d 76 00 e8 5b fd ff ff c9
c3 89
[ 57.324017] EAX: 0000001d EBX: 0d00022a ECX: 00000027 EDX: f5b9e14c
[ 57.330274] ESI: f2a2ffb4 EDI: ffff0ff4 EBP: f2a2ff8c ESP: f2a2ff80
[ 57.336531] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010096
[ 57.343345] CR0: 80050033 CR2: 08700a58 CR3: 14ad7000 CR4: 003406d0
[ 57.349608] DR0: 080dfb80 DR1: 080dfc00 DR2: 08700a58 DR3: 00000000
[ 57.355866] DR6: fffe0ff0 DR7: 0d00062a
[ 57.359697] Call Trace:
[ 57.362143] exc_debug+0x84/0x1b0
[ 57.365487] ? exc_int3+0x1d0/0x1d0
[ 57.368981] handle_exception+0x145/0x145
[ 57.372991] EIP: 0x80dfbcd
[ 57.375694] Code: Bad RIP value.
[ 57.378918] EAX: 00000000 EBX: 00000005 ECX: 00002400 EDX: 00000000
[ 57.385175] ESI: 00000003 EDI: 00000004 EBP: bfd59798 ESP: bfd59770
[ 57.391431] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000246
[ 57.398215] irq event stamp: 1896
[ 57.401556] hardirqs last enabled at (1895): [<d3c316b9>]
idtentry_exit_user+0x39/0x60
[ 57.409556] hardirqs last disabled at (1896): [<d2f6e742>]
vprintk_emit+0x42/0x290
[ 57.417120] softirqs last enabled at (0): [<d2eee73a>]
copy_process+0x3ea/0x17d0
[ 57.424590] softirqs last disabled at (0): [<00000000>] 0x0
[ 57.430155] ---[ end trace 421998f6ba46136b ]---
10.2: PMU event [ 57.434872] ------------[ cut here ]------------
[ 57.440858] IRQs not disabled as expected
[ 57.444870] WARNING: CPU: 1 PID: 500 at
/usr/src/kernel/arch/x86/entry/common.c:240
__prepare_exit_to_usermode+0x164/0x1b0
[ 57.455900] Modules linked in: x86_pkg_temp_thermal fuse
[ 57.461207] CPU: 1 PID: 500 Comm: perf Tainted: G W
5.7.0-next-20200610 #1
[ 57.469379] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.2 05/23/2018
[ 57.476770] EIP: __prepare_exit_to_usermode+0x164/0x1b0
[ 57.481988] Code: d8 05 00 00 85 db 0f 84 08 ff ff ff 80 3d b2 64
2c d4 00 0f 85 fb fe ff ff 68 94 2d fb d3 c6 05 b2 64 2c d4 01 e8 8c
ec 0e 00 <0f> 0b 59 e9 e2 fe ff ff 8d 74 26 00 68 3c 2d fb d3 e8 76 ec
0e 00
[ 57.500732] EAX: 0000001d EBX: 00000001 ECX: 00000027 EDX: f5b9e14c
[ 57.506991] ESI: f1e9a400 EDI: f2a2ffb4 EBP: f2a2ff74 ESP: f2a2ff64
[ 57.513275] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010086
[ 57.520060] CR0: 80050033 CR2: 08700a58 CR3: 14ad7000 CR4: 003406d0
[ 57.526346] DR0: 080dfb80 DR1: 080dfc00 DR2: 08700a58 DR3: 00000000
[ 57.532608] DR6: fffe0ff0 DR7: 0d00062a
[ 57.536439] Call Trace:
[ 57.538885] prepare_exit_to_usermode+0x8/0x30
[ 57.543356] idtentry_exit_cond_rcu+0xa5/0xc0
[ 57.547714] ? idtentry_exit_user+0x39/0x60
[ 57.551892] exc_debug+0x84/0x1b0
[ 57.555212] ? exc_int3+0x1d0/0x1d0
[ 57.558704] handle_exception+0x145/0x145
[ 57.562715] EIP: 0x80dfc00
[ 57.565417] Code: Bad RIP value.
[ 57.568644] EAX: 0000001d EBX: 00000005 ECX: bfd5920c EDX: bfd5918c
[ 57.574899] ESI: 00000003 EDI: 00000004 EBP: bfd59798 ESP: bfd5917c
[ 57.581158] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010246
[ 57.587948] irq event stamp: 1942
[ 57.591340] hardirqs last enabled at (1941): [<d3c316b9>]
idtentry_exit_user+0x39/0x60
[ 57.599345] hardirqs last disabled at (1942): [<d2f6e742>]
vprintk_emit+0x42/0x290
[ 57.606906] softirqs last enabled at (1934): [<d2eb1b68>]
fpu__clear+0x78/0xd0
[ 57.614210] softirqs last disabled at (1932): [<d2eb1b11>]
fpu__clear+0x21/0xd0
[ 57.621509] ---[ end trace 421998f6ba46136c ]---
map aliases :
Full test log link,
----------------------
perf test full output log:
https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20200610/testrun/2808447/suite/linux-log-parser/test/check-kernel-warning-1486409/log
kselftest full output log,
https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20200610/testrun/2808443/suite/linux-log-parser/test/check-kernel-exception-1486406/log
metadata:
--------------
git branch: master
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git commit: 976c320052ff22a7f9b8be0d56aefacb3a40f466
git describe: next-20200610
kernel-config:
http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-core2-32/lkft/linux-next/786/config
--
Linaro LKFT
https://lkft.linaro.org
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