* Perf: RIP: 0010:__schedule on qemu-x86_64
@ 2023-05-24 9:02 Naresh Kamboju
2023-05-25 15:21 ` Joel Fernandes
0 siblings, 1 reply; 3+ messages in thread
From: Naresh Kamboju @ 2023-05-24 9:02 UTC (permalink / raw)
To: open list, linux-stable, linux-perf-users, rcu, lkft-triage
Cc: Peter Zijlstra, Paul E. McKenney, Arnaldo Carvalho de Melo,
Ingo Molnar, Vincent Guittot, Juri Lelli, Dan Carpenter,
Arnaldo Carvalho de Melo
Following kernel crash noticed while running perf testing on qemu-x86_64
with stable-rc 6.3.4-rc2 + kselftest merge configs.
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
logs:
=====
INFO: Performing perf record test...
Parse sched tracepoints fields: Ok
16: syscalls:sys_enter_openat event fields :
--- start ---
test child forked, pid 255
<4>[ 152.221288] int3: 0000 [#1] PREEMPT SMP PTI
<4>[ 152.221564] CPU: 0 PID: 255 Comm: perf Not tainted 6.3.4-rc2 #1
<4>[ 152.221607] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
BIOS 1.14.0-2 04/01/2014
<4>[ 152.221733] RIP: 0010:__schedule+0x29e/0xaa0
<4>[ 152.222066] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
0a 00 00
<4>[ 152.222122] RSP: 0018:ffff94aec0677bc0 EFLAGS: 00000046
<4>[ 152.222170] RAX: ffffffffa2e10900 RBX: ffff8b517bc2b700 RCX:
0000000000000004
<4>[ 152.222184] RDX: 00000023711138c0 RSI: 0000000000000000 RDI:
ffff8b517bc2b700
<4>[ 152.222197] RBP: ffff94aec0677c28 R08: ffff8b5102aa6a00 R09:
000000000000004e
<4>[ 152.222211] R10: 0000000000000001 R11: 0000000000000001 R12:
ffff8b51009e3c00
<4>[ 152.222223] R13: ffffffffa2cf3f48 R14: ffffffffa2e10900 R15:
ffff8b51009e4248
<4>[ 152.222275] FS: 00007f6b8ea81800(0000)
GS:ffff8b517bc00000(0000) knlGS:0000000000000000
<4>[ 152.222294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 152.222308] CR2: 00007f6b8dd204e0 CR3: 0000000105a1c000 CR4:
00000000000006f0
<4>[ 152.222409] Call Trace:
<4>[ 152.222500] <TASK>
<4>[ 152.222605] schedule+0x6a/0xf0
<4>[ 152.222664] schedule_timeout+0x14f/0x160
<4>[ 152.222680] wait_for_completion+0x8c/0x140
<4>[ 152.222696] __wait_rcu_gp+0x13e/0x140
<4>[ 152.222712] synchronize_rcu+0x12f/0x140
<4>[ 152.222731] ? __pfx_call_rcu_hurry+0x10/0x10
<4>[ 152.222748] ? __pfx_wakeme_after_rcu+0x10/0x10
<4>[ 152.222766] perf_event_alloc+0xd53/0xdc0
<4>[ 152.222783] ? preempt_count_sub+0x50/0x80
<4>[ 152.222795] ? _raw_spin_unlock+0x1a/0x40
<4>[ 152.222810] __do_sys_perf_event_open+0x1df/0xd10
<4>[ 152.222838] __x64_sys_perf_event_open+0x26/0x30
<4>[ 152.222849] do_syscall_64+0x3e/0x90
<4>[ 152.222863] entry_SYSCALL_64_after_hwframe+0x72/0xdc
<4>[ 152.222920] RIP: 0033:0x7f6b8dd204f9
<4>[ 152.223150] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00
00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c
24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d7 08 0d 00 f7 d8 64
89 01 48
<4>[ 152.223158] RSP: 002b:00007ffd51880f68 EFLAGS: 00000202
ORIG_RAX: 000000000000012a
<4>[ 152.223175] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX:
00007f6b8dd204f9
<4>[ 152.223181] RDX: 0000000000000000 RSI: 00000000000000ff RDI:
000055e658912b50
<4>[ 152.223187] RBP: 00007ffd51881030 R08: 0000000000000008 R09:
00007ffd51881090
<4>[ 152.223192] R10: 00000000ffffffff R11: 0000000000000202 R12:
0000000000000008
<4>[ 152.223198] R13: 0000000000000000 R14: 0000000000000000 R15:
000055e658912b40
<4>[ 152.223246] </TASK>
<4>[ 152.223308] Modules linked in:
<4>[ 152.247884] ---[ end trace 0000000000000000 ]---
<4>[ 152.248004] RIP: 0010:__schedule+0x29e/0xaa0
<4>[ 152.248051] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
0a 00 00
<4>[ 152.248066] RSP: 0018:ffff94aec0677bc0 EFLAGS: 00000046
<4>[ 152.248089] RAX: ffffffffa2e10900 RBX: ffff8b517bc2b700 RCX:
0000000000000004
<4>[ 152.248099] RDX: 00000023711138c0 RSI: 0000000000000000 RDI:
ffff8b517bc2b700
<4>[ 152.248269] RBP: ffff94aec0677c28 R08: ffff8b5102aa6a00 R09:
000000000000004e
<4>[ 152.248282] R10: 0000000000000001 R11: 0000000000000001 R12:
ffff8b51009e3c00
<4>[ 152.248294] R13: ffffffffa2cf3f48 R14: ffffffffa2e10900 R15:
ffff8b51009e4248
<4>[ 152.248304] FS: 00007f6b8ea81800(0000)
GS:ffff8b517bc00000(0000) knlGS:0000000000000000
<4>[ 152.248316] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 152.248479] CR2: 00007f6b8dd204e0 CR3: 0000000105a1c000 CR4:
00000000000006f0
<0>[ 152.248663] Kernel panic - not syncing: Fatal exception in interrupt
<4>[ 152.248980] int3: 0000 [#2] PREEMPT SMP PTI
<4>[ 152.249101] CPU: 1 PID: 32 Comm: kworker/u4:3 Tainted: G D
6.3.4-rc2 #1
<4>[ 152.249124] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
BIOS 1.14.0-2 04/01/2014
<4>[ 152.249292] Workqueue: 0x0 (events_unbound)
<4>[ 152.249420] RIP: 0010:__schedule+0x29e/0xaa0
<4>[ 152.249471] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
0a 00 00
<4>[ 152.249486] RSP: 0018:ffff94aec0117e38 EFLAGS: 00000046
<4>[ 152.249502] RAX: ffff8b51002d8000 RBX: ffff8b517bd2b700 RCX:
0000000000000004
<4>[ 152.249512] RDX: 0000002372bd853f RSI: ffffffffffa7caff RDI:
ffff8b517bd2b700
<4>[ 152.249522] RBP: ffff94aec0117ea0 R08: 0000000000000400 R09:
0000000000000361
<4>[ 152.249532] R10: 0000000000000001 R11: 0000000000000000 R12:
ffff8b51008a0f00
<4>[ 152.249542] R13: ffffffffa2cf3f48 R14: ffff8b51002d8000 R15:
ffff8b51008a1548
<4>[ 152.249552] FS: 0000000000000000(0000)
GS:ffff8b517bd00000(0000) knlGS:0000000000000000
<4>[ 152.249565] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 152.249576] CR2: 00007ffd518816b8 CR3: 000000010591e000 CR4:
00000000000006e0
<4>[ 152.249588] Call Trace:
<4>[ 152.249603] <TASK>
<4>[ 152.249636] schedule+0x6a/0xf0
<4>[ 152.249658] worker_thread+0xc0/0x3e0
<4>[ 152.249684] ? __pfx_worker_thread+0x10/0x10
<4>[ 152.249704] kthread+0xfc/0x120
<4>[ 152.249721] ? __pfx_kthread+0x10/0x10
<4>[ 152.249739] ret_from_fork+0x2c/0x50
<4>[ 152.249797] </TASK>
<4>[ 152.249805] Modules linked in:
<4>[ 152.250386] ---[ end trace 0000000000000000 ]---
<4>[ 152.250399] RIP: 0010:__schedule+0x29e/0xaa0
<4>[ 152.250421] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
0a 00 00
<4>[ 152.250434] RSP: 0018:ffff94aec0677bc0 EFLAGS: 00000046
<4>[ 152.250448] RAX: ffffffffa2e10900 RBX: ffff8b517bc2b700 RCX:
0000000000000004
<4>[ 152.250458] RDX: 00000023711138c0 RSI: 0000000000000000 RDI:
ffff8b517bc2b700
<4>[ 152.250467] RBP: ffff94aec0677c28 R08: ffff8b5102aa6a00 R09:
000000000000004e
<4>[ 152.250477] R10: 0000000000000001 R11: 0000000000000001 R12:
ffff8b51009e3c00
<4>[ 152.250486] R13: ffffffffa2cf3f48 R14: ffffffffa2e10900 R15:
ffff8b51009e4248
<4>[ 152.250496] FS: 0000000000000000(0000)
GS:ffff8b517bd00000(0000) knlGS:0000000000000000
<4>[ 152.250508] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 152.250519] CR2: 00007ffd518816b8 CR3: 000000010591e000 CR4:
00000000000006e0
<0>[ 154.015533] Shutting down cpus with NMI
<0>[ 154.016784] Kernel Offset: 0x20000000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)
log links,
=====
- https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.3.y/build/v6.3.3-364-ga37c304c022d/testrun/17169996/suite/log-parser-test/test/check-kernel-panic/log
- https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.3.y/build/v6.3.3-364-ga37c304c022d/testrun/17169996/suite/log-parser-test/tests/
- https://storage.tuxsuite.com/public/linaro/lkft/builds/2QCeuajqUTZlyC4kEyQGxT6YwYv/
- https://storage.tuxsuite.com/public/linaro/lkft/builds/2QCeuajqUTZlyC4kEyQGxT6YwYv/config
--
Linaro LKFT
https://lkft.linaro.org
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Perf: RIP: 0010:__schedule on qemu-x86_64
2023-05-24 9:02 Perf: RIP: 0010:__schedule on qemu-x86_64 Naresh Kamboju
@ 2023-05-25 15:21 ` Joel Fernandes
2023-05-26 5:39 ` Naresh Kamboju
0 siblings, 1 reply; 3+ messages in thread
From: Joel Fernandes @ 2023-05-25 15:21 UTC (permalink / raw)
To: Naresh Kamboju
Cc: open list, linux-stable, linux-perf-users, rcu, lkft-triage,
Peter Zijlstra, Paul E. McKenney, Arnaldo Carvalho de Melo,
Ingo Molnar, Vincent Guittot, Juri Lelli, Dan Carpenter,
Arnaldo Carvalho de Melo
Hello Naresh,
On Wed, May 24, 2023 at 5:02 AM Naresh Kamboju
<naresh.kamboju@linaro.org> wrote:
>
> Following kernel crash noticed while running perf testing on qemu-x86_64
> with stable-rc 6.3.4-rc2 + kselftest merge configs.
>
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>
> logs:
> =====
> INFO: Performing perf record test...
>
> Parse sched tracepoints fields: Ok
> 16: syscalls:sys_enter_openat event fields :
> --- start ---
> test child forked, pid 255
> <4>[ 152.221288] int3: 0000 [#1] PREEMPT SMP PTI
> <4>[ 152.221564] CPU: 0 PID: 255 Comm: perf Not tainted 6.3.4-rc2 #1
> <4>[ 152.221607] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
> BIOS 1.14.0-2 04/01/2014
> <4>[ 152.221733] RIP: 0010:__schedule+0x29e/0xaa0
> <4>[ 152.222066] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
> 0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
> 44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
> 0a 00 00
> <4>[ 152.222122] RSP: 0018:ffff94aec0677bc0 EFLAGS: 00000046
> <4>[ 152.222170] RAX: ffffffffa2e10900 RBX: ffff8b517bc2b700 RCX:
> 0000000000000004
> <4>[ 152.222184] RDX: 00000023711138c0 RSI: 0000000000000000 RDI:
> ffff8b517bc2b700
> <4>[ 152.222197] RBP: ffff94aec0677c28 R08: ffff8b5102aa6a00 R09:
> 000000000000004e
> <4>[ 152.222211] R10: 0000000000000001 R11: 0000000000000001 R12:
> ffff8b51009e3c00
> <4>[ 152.222223] R13: ffffffffa2cf3f48 R14: ffffffffa2e10900 R15:
> ffff8b51009e4248
> <4>[ 152.222275] FS: 00007f6b8ea81800(0000)
> GS:ffff8b517bc00000(0000) knlGS:0000000000000000
> <4>[ 152.222294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> <4>[ 152.222308] CR2: 00007f6b8dd204e0 CR3: 0000000105a1c000 CR4:
> 00000000000006f0
> <4>[ 152.222409] Call Trace:
> <4>[ 152.222500] <TASK>
> <4>[ 152.222605] schedule+0x6a/0xf0
> <4>[ 152.222664] schedule_timeout+0x14f/0x160
> <4>[ 152.222680] wait_for_completion+0x8c/0x140
> <4>[ 152.222696] __wait_rcu_gp+0x13e/0x140
> <4>[ 152.222712] synchronize_rcu+0x12f/0x140
> <4>[ 152.222731] ? __pfx_call_rcu_hurry+0x10/0x10
> <4>[ 152.222748] ? __pfx_wakeme_after_rcu+0x10/0x10
> <4>[ 152.222766] perf_event_alloc+0xd53/0xdc0
> <4>[ 152.222783] ? preempt_count_sub+0x50/0x80
> <4>[ 152.222795] ? _raw_spin_unlock+0x1a/0x40
> <4>[ 152.222810] __do_sys_perf_event_open+0x1df/0xd10
> <4>[ 152.222838] __x64_sys_perf_event_open+0x26/0x30
> <4>[ 152.222849] do_syscall_64+0x3e/0x90
> <4>[ 152.222863] entry_SYSCALL_64_after_hwframe+0x72/0xdc
> <4>[ 152.222920] RIP: 0033:0x7f6b8dd204f9
> <4>[ 152.223150] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00
> 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c
> 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d7 08 0d 00 f7 d8 64
> 89 01 48
> <4>[ 152.223158] RSP: 002b:00007ffd51880f68 EFLAGS: 00000202
> ORIG_RAX: 000000000000012a
> <4>[ 152.223175] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX:
> 00007f6b8dd204f9
> <4>[ 152.223181] RDX: 0000000000000000 RSI: 00000000000000ff RDI:
> 000055e658912b50
> <4>[ 152.223187] RBP: 00007ffd51881030 R08: 0000000000000008 R09:
> 00007ffd51881090
> <4>[ 152.223192] R10: 00000000ffffffff R11: 0000000000000202 R12:
> 0000000000000008
> <4>[ 152.223198] R13: 0000000000000000 R14: 0000000000000000 R15:
> 000055e658912b40
> <4>[ 152.223246] </TASK>
> <4>[ 152.223308] Modules linked in:
> <4>[ 152.247884] ---[ end trace 0000000000000000 ]---
> <4>[ 152.248004] RIP: 0010:__schedule+0x29e/0xaa0
> <4>[ 152.248051] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
> 0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
> 44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
> 0a 00 00
> <4>[ 152.248066] RSP: 0018:ffff94aec0677bc0 EFLAGS: 00000046
> <4>[ 152.248089] RAX: ffffffffa2e10900 RBX: ffff8b517bc2b700 RCX:
> 0000000000000004
> <4>[ 152.248099] RDX: 00000023711138c0 RSI: 0000000000000000 RDI:
> ffff8b517bc2b700
> <4>[ 152.248269] RBP: ffff94aec0677c28 R08: ffff8b5102aa6a00 R09:
> 000000000000004e
> <4>[ 152.248282] R10: 0000000000000001 R11: 0000000000000001 R12:
> ffff8b51009e3c00
> <4>[ 152.248294] R13: ffffffffa2cf3f48 R14: ffffffffa2e10900 R15:
> ffff8b51009e4248
> <4>[ 152.248304] FS: 00007f6b8ea81800(0000)
> GS:ffff8b517bc00000(0000) knlGS:0000000000000000
> <4>[ 152.248316] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> <4>[ 152.248479] CR2: 00007f6b8dd204e0 CR3: 0000000105a1c000 CR4:
> 00000000000006f0
> <0>[ 152.248663] Kernel panic - not syncing: Fatal exception in interrupt
> <4>[ 152.248980] int3: 0000 [#2] PREEMPT SMP PTI
> <4>[ 152.249101] CPU: 1 PID: 32 Comm: kworker/u4:3 Tainted: G D
> 6.3.4-rc2 #1
> <4>[ 152.249124] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
> BIOS 1.14.0-2 04/01/2014
> <4>[ 152.249292] Workqueue: 0x0 (events_unbound)
> <4>[ 152.249420] RIP: 0010:__schedule+0x29e/0xaa0
> <4>[ 152.249471] Code: 00 48 29 c1 49 01 8e 48 04 00 00 48 85 db 74
> 0f 48 01 8b 90 0c 00 00 48 83 83 88 0c 00 00 01 0f 1f 44 00 00 0f 1f
> 44 00 00 e9 <7a> 01 00 00 49 0f ba ac 24 18 0a 00 00 00 49 83 bc 24 08
> 0a 00 00
> <4>[ 152.249486] RSP: 0018:ffff94aec0117e38 EFLAGS: 00000046
> <4>[ 152.249502] RAX: ffff8b51002d8000 RBX: ffff8b517bd2b700 RCX:
> 0000000000000004
> <4>[ 152.249512] RDX: 0000002372bd853f RSI: ffffffffffa7caff RDI:
> ffff8b517bd2b700
> <4>[ 152.249522] RBP: ffff94aec0117ea0 R08: 0000000000000400 R09:
> 0000000000000361
> <4>[ 152.249532] R10: 0000000000000001 R11: 0000000000000000 R12:
> ffff8b51008a0f00
> <4>[ 152.249542] R13: ffffffffa2cf3f48 R14: ffff8b51002d8000 R15:
> ffff8b51008a1548
> <4>[ 152.249552] FS: 0000000000000000(0000)
> GS:ffff8b517bd00000(0000) knlGS:0000000000000000
> <4>[ 152.249565] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> <4>[ 152.249576] CR2: 00007ffd518816b8 CR3: 000000010591e000 CR4:
> 00000000000006e0
> <4>[ 152.249588] Call Trace:
> <4>[ 152.249603] <TASK>
> <4>[ 152.249636] schedule+0x6a/0xf0
> <4>[ 152.249658] worker_thread+0xc0/0x3e0
> <4>[ 152.249684] ? __pfx_worker_thread+0x10/0x10
> <4>[ 152.249704] kthread+0xfc/0x120
> <4>[ 152.249721] ? __pfx_kthread+0x10/0x10
I wonder if this is a deadlock related to runqueue lock since another
CPU call stack are similarly in schedule.
I tried to run gdb on your vmlinux but it does not have symbols, would
it be possible for you to provide a copy of vmlinux with symbols?
Were you able to narrow down the commit/release using git bisect to
see when it started happening?
Thank you,
- Joel
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Perf: RIP: 0010:__schedule on qemu-x86_64
2023-05-25 15:21 ` Joel Fernandes
@ 2023-05-26 5:39 ` Naresh Kamboju
0 siblings, 0 replies; 3+ messages in thread
From: Naresh Kamboju @ 2023-05-26 5:39 UTC (permalink / raw)
To: Joel Fernandes
Cc: open list, linux-stable, linux-perf-users, rcu, lkft-triage,
Peter Zijlstra, Paul E. McKenney, Arnaldo Carvalho de Melo,
Ingo Molnar, Vincent Guittot, Juri Lelli, Dan Carpenter,
Arnaldo Carvalho de Melo
HI Joel,
On Thu, 25 May 2023 at 20:51, Joel Fernandes <joel@joelfernandes.org> wrote:
>
> Hello Naresh,
>
> On Wed, May 24, 2023 at 5:02 AM Naresh Kamboju
> <naresh.kamboju@linaro.org> wrote:
> >
> > Following kernel crash noticed while running perf testing on qemu-x86_64
> > with stable-rc 6.3.4-rc2 + kselftest merge configs.
> >
> > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> >
> > logs:
> > =====
> > INFO: Performing perf record test...
> >
> > Parse sched tracepoints fields: Ok
> > 16: syscalls:sys_enter_openat event fields :
> > --- start ---
> > test child forked, pid 255
> > <4>[ 152.221288] int3: 0000 [#1] PREEMPT SMP PTI
> > <4>[ 152.221564] CPU: 0 PID: 255 Comm: perf Not tainted 6.3.4-rc2 #1
> > <4>[ 152.221607] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
> > BIOS 1.14.0-2 04/01/2014
> > <4>[ 152.221733] RIP: 0010:__schedule+0x29e/0xaa0
<trim>
> I wonder if this is a deadlock related to runqueue lock since another
> CPU call stack are similarly in schedule.
>
> I tried to run gdb on your vmlinux but it does not have symbols, would
> it be possible for you to provide a copy of vmlinux with symbols?
DEBUG_INFO not enabled on this build.
>
> Were you able to narrow down the commit/release using git bisect to
> see when it started happening?
I will bisect this problem and get back to you.
>
> Thank you,
>
> - Joel
- Naresh
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-05-26 5:39 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-05-24 9:02 Perf: RIP: 0010:__schedule on qemu-x86_64 Naresh Kamboju
2023-05-25 15:21 ` Joel Fernandes
2023-05-26 5:39 ` Naresh Kamboju
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.