* INFO: task hung in io_ring_exit_work
@ 2021-10-14 2:27 Hao Sun
2021-10-14 10:00 ` Pavel Begunkov
0 siblings, 1 reply; 4+ messages in thread
From: Hao Sun @ 2021-10-14 2:27 UTC (permalink / raw)
To: Pavel Begunkov, Jens Axboe, io-uring; +Cc: Linux Kernel Mailing List
Hello,
When using Healer to fuzz the latest Linux kernel, the following crash
was triggered.
HEAD commit: 64570fbc14f8 Linux 5.15-rc5
git tree: upstream
console output:
https://drive.google.com/file/d/1JeHQP3cxmLK6WDSLxyOrUGLDujuTCXeU/view?usp=sharing
kernel config: https://drive.google.com/file/d/1em3xgUIMNN_-LUUdySzwN-UDPc3qiiKD/view?usp=sharing
Similar report from syzbot:
https://syzkaller.appspot.com/bug?id=db58a4022d476752fca3c46386b33ca799d3a7f0
Sorry, I don't have a reproducer for this crash, hope the symbolized
report can help.
If you fix this issue, please add the following tag to the commit:
Reported-by: Hao Sun <sunhao.th@gmail.com>
INFO: task kworker/u10:0:24 blocked for more than 143 seconds.
Not tainted 5.15.0-rc5 #3
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:0 state:D stack:24944 pid: 24 ppid: 2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xcd9/0x2530 kernel/sched/core.c:6287
schedule+0xd3/0x270 kernel/sched/core.c:6366
schedule_timeout+0x5e5/0x890 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x17d/0x280 kernel/sched/completion.c:138
io_ring_exit_work+0x530/0x1550 fs/io_uring.c:9442
process_one_work+0x9df/0x16d0 kernel/workqueue.c:2297
worker_thread+0x90/0xed0 kernel/workqueue.c:2444
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 39 Comm: khungtaskd Not tainted 5.15.0-rc5 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1e1/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xcc8/0x1010 kernel/hung_task.c:295
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1-3:
NMI backtrace for cpu 1
CPU: 1 PID: 13884 Comm: syz-executor Not tainted 5.15.0-rc5 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
RIP: 0010:irqentry_enter+0x28/0x50 kernel/entry/common.c:380
Code: 00 00 f6 87 88 00 00 00 03 75 37 65 48 8b 04 25 40 f0 01 00 f6
40 2c 02 48 8b 3c 24 75 0f e8 1f f4 ff ff eb 00 e8 d8 87 49 f8 <31> c0
c3 e8 10 f4 ff ff e8 cb fc ff ff e8 c6 87 49 f8 b8 01 00 00
RSP: 0018:ffffc90009db7db0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888017765580
RDX: 0000000000000000 RSI: ffff888017765580 RDI: 0000000000000002
RBP: ffffc90009db7de8 R08: ffffffff8932db28 R09: 0000000000000000
R10: 0000000000000001 R11: fffffbfff1adb0b2 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000
FS: 00007ff54513e700(0000) GS:ffff888135c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 00000000149e3000 CR4: 0000000000350ee0
Call Trace:
exc_page_fault+0x45/0x180 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
RIP: 0010:strncpy_from_user+0x1e6/0x3f0 lib/strncpy_from_user.c:139
Code: 83 eb 08 4d 89 7c 2d 00 bf 07 00 00 00 48 83 c5 08 48 89 de e8
cb 40 7b fd 48 83 fb 07 0f 86 c4 01 00 00 e8 3c 3f 7b fd 31 c0 <4d> 8b
3c 2c 31 ff 89 c6 89 04 24 e8 8a 40 7b fd 8b 04 24 85 c0 0f
RSP: 0018:ffffc90009db7e90 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000fe0 RCX: ffff888017765580
RDX: 0000000000000000 RSI: ffff888017765580 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff83fb1f84 R09: 0000000000000007
R10: 0000000000000007 R11: fffff94000862c40 R12: 0000000000000003
R13: ffff88810c589120 R14: 0000000000000fe0 R15: 0000000000000fe3
getname_flags fs/namei.c:149 [inline]
getname_flags+0x117/0x5b0 fs/namei.c:128
getname fs/namei.c:217 [inline]
__do_sys_rename fs/namei.c:4825 [inline]
__se_sys_rename fs/namei.c:4823 [inline]
__x64_sys_rename+0x56/0xa0 fs/namei.c:4823
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x2000028a
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 98 4a 2a e9 2c b8 b6 4c 0f 05 <bf> 00
00 40 00 c4 a3 7b f0 c5 01 41 e2 e9 c4 22 e9 aa bb 3c 00 00
RSP: 002b:00007ff54513dbb8 EFLAGS: 00000203 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 000000002000028a
RDX: 0000000000004c01 RSI: 0000000000000003 RDI: 0000000000400000
RBP: 000000000000008b R08: 0000000000000005 R09: 0000000000000006
R10: 0000000000000007 R11: 0000000000000203 R12: 000000000000000b
R13: 000000000000000c R14: 000000000000000d R15: 00007ff54513ddc0
NMI backtrace for cpu 2 skipped: idling at native_safe_halt
arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 2 skipped: idling at arch_safe_halt
arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 2 skipped: idling at default_idle+0xb/0x10
arch/x86/kernel/process.c:716
NMI backtrace for cpu 3
CPU: 3 PID: 3019 Comm: systemd-journal Not tainted 5.15.0-rc5 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
RIP: 0033:0x7ffc3d1c69b5
Code: 00 0f 84 b9 00 00 00 4c 63 cf 49 c1 e1 04 4d 01 c1 45 8b 10 41
f6 c2 01 0f 85 8d 00 00 00 41 8b 40 04 83 f8 01 75 6f 0f 01 f9 <66> 90
48 c1 e2 20 48 09 c2 48 85 d2 78 63 49 8b 48 08 49 8b 41 28
RSP: 002b:00007ffc3d110910 EFLAGS: 00000246
RAX: 000000007fa7dd4e RBX: 0000000000000007 RCX: 0000000000001003
RDX: 0000000000000096 RSI: 00007ffc3d110960 RDI: 0000000000000007
RBP: 00007ffc3d110930 R08: 00007ffc3d1c2080 R09: 00007ffc3d1c20f0
R10: 000000000000dd10 R11: 000000000000011d R12: 00007ffc3d1109a0
R13: 0000000000000001 R14: 0000000000000001 R15: 0005ce1974964533
FS: 00007f9157d9a8c0 GS: 0000000000000000
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: f6 87 88 00 00 00 03 testb $0x3,0x88(%rdi)
9: 75 37 jne 0x42
b: 65 48 8b 04 25 40 f0 mov %gs:0x1f040,%rax
12: 01 00
14: f6 40 2c 02 testb $0x2,0x2c(%rax)
18: 48 8b 3c 24 mov (%rsp),%rdi
1c: 75 0f jne 0x2d
1e: e8 1f f4 ff ff callq 0xfffff442
23: eb 00 jmp 0x25
25: e8 d8 87 49 f8 callq 0xf8498802
* 2a: 31 c0 xor %eax,%eax <-- trapping instruction
2c: c3 retq
2d: e8 10 f4 ff ff callq 0xfffff442
32: e8 cb fc ff ff callq 0xfffffd02
37: e8 c6 87 49 f8 callq 0xf8498802
3c: b8 .byte 0xb8
3d: 01 00 add %eax,(%rax)%
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: INFO: task hung in io_ring_exit_work
2021-10-14 2:27 INFO: task hung in io_ring_exit_work Hao Sun
@ 2021-10-14 10:00 ` Pavel Begunkov
0 siblings, 0 replies; 4+ messages in thread
From: Pavel Begunkov @ 2021-10-14 10:00 UTC (permalink / raw)
To: Hao Sun, Jens Axboe, io-uring; +Cc: Linux Kernel Mailing List
On 10/14/21 03:27, Hao Sun wrote:
> Hello,
>
> When using Healer to fuzz the latest Linux kernel, the following crash
> was triggered.
>
> HEAD commit: 64570fbc14f8 Linux 5.15-rc5
> git tree: upstream
> console output:
> https://drive.google.com/file/d/1JeHQP3cxmLK6WDSLxyOrUGLDujuTCXeU/view?usp=sharing
> kernel config: https://drive.google.com/file/d/1em3xgUIMNN_-LUUdySzwN-UDPc3qiiKD/view?usp=sharing
> Similar report from syzbot:
> https://syzkaller.appspot.com/bug?id=db58a4022d476752fca3c46386b33ca799d3a7f0
>
> Sorry, I don't have a reproducer for this crash, hope the symbolized
> report can help.
> If you fix this issue, please add the following tag to the commit:
> Reported-by: Hao Sun <sunhao.th@gmail.com>
That's interesting, tws are not being run again. I'm afraid the
report doesn't help, but hopefully it'll be able to find a repro
> INFO: task kworker/u10:0:24 blocked for more than 143 seconds.
> Not tainted 5.15.0-rc5 #3
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:kworker/u10:0 state:D stack:24944 pid: 24 ppid: 2 flags:0x00004000
> Workqueue: events_unbound io_ring_exit_work
> Call Trace:
> context_switch kernel/sched/core.c:4940 [inline]
> __schedule+0xcd9/0x2530 kernel/sched/core.c:6287
> schedule+0xd3/0x270 kernel/sched/core.c:6366
> schedule_timeout+0x5e5/0x890 kernel/time/timer.c:1857
> do_wait_for_common kernel/sched/completion.c:85 [inline]
> __wait_for_common kernel/sched/completion.c:106 [inline]
> wait_for_common kernel/sched/completion.c:117 [inline]
> wait_for_completion+0x17d/0x280 kernel/sched/completion.c:138
> io_ring_exit_work+0x530/0x1550 fs/io_uring.c:9442
> process_one_work+0x9df/0x16d0 kernel/workqueue.c:2297
> worker_thread+0x90/0xed0 kernel/workqueue.c:2444
> kthread+0x3e5/0x4d0 kernel/kthread.c:319
> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
> INFO: lockdep is turned off.
> NMI backtrace for cpu 0
> CPU: 0 PID: 39 Comm: khungtaskd Not tainted 5.15.0-rc5 #3
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> 1.13.0-1ubuntu1.1 04/01/2014
> Call Trace:
> __dump_stack lib/dump_stack.c:88 [inline]
> dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
> nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
> nmi_trigger_cpumask_backtrace+0x1e1/0x220 lib/nmi_backtrace.c:62
> trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
> check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
> watchdog+0xcc8/0x1010 kernel/hung_task.c:295
> kthread+0x3e5/0x4d0 kernel/kthread.c:319
> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
> Sending NMI from CPU 0 to CPUs 1-3:
> NMI backtrace for cpu 1
> CPU: 1 PID: 13884 Comm: syz-executor Not tainted 5.15.0-rc5 #3
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> 1.13.0-1ubuntu1.1 04/01/2014
> RIP: 0010:irqentry_enter+0x28/0x50 kernel/entry/common.c:380
> Code: 00 00 f6 87 88 00 00 00 03 75 37 65 48 8b 04 25 40 f0 01 00 f6
> 40 2c 02 48 8b 3c 24 75 0f e8 1f f4 ff ff eb 00 e8 d8 87 49 f8 <31> c0
> c3 e8 10 f4 ff ff e8 cb fc ff ff e8 c6 87 49 f8 b8 01 00 00
> RSP: 0018:ffffc90009db7db0 EFLAGS: 00000046
> RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888017765580
> RDX: 0000000000000000 RSI: ffff888017765580 RDI: 0000000000000002
> RBP: ffffc90009db7de8 R08: ffffffff8932db28 R09: 0000000000000000
> R10: 0000000000000001 R11: fffffbfff1adb0b2 R12: 0000000000000000
> R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000
> FS: 00007ff54513e700(0000) GS:ffff888135c00000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000000003 CR3: 00000000149e3000 CR4: 0000000000350ee0
> Call Trace:
> exc_page_fault+0x45/0x180 arch/x86/mm/fault.c:1538
> asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
> RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
> RIP: 0010:strncpy_from_user+0x1e6/0x3f0 lib/strncpy_from_user.c:139
> Code: 83 eb 08 4d 89 7c 2d 00 bf 07 00 00 00 48 83 c5 08 48 89 de e8
> cb 40 7b fd 48 83 fb 07 0f 86 c4 01 00 00 e8 3c 3f 7b fd 31 c0 <4d> 8b
> 3c 2c 31 ff 89 c6 89 04 24 e8 8a 40 7b fd 8b 04 24 85 c0 0f
> RSP: 0018:ffffc90009db7e90 EFLAGS: 00050246
> RAX: 0000000000000000 RBX: 0000000000000fe0 RCX: ffff888017765580
> RDX: 0000000000000000 RSI: ffff888017765580 RDI: 0000000000000002
> RBP: 0000000000000000 R08: ffffffff83fb1f84 R09: 0000000000000007
> R10: 0000000000000007 R11: fffff94000862c40 R12: 0000000000000003
> R13: ffff88810c589120 R14: 0000000000000fe0 R15: 0000000000000fe3
> getname_flags fs/namei.c:149 [inline]
> getname_flags+0x117/0x5b0 fs/namei.c:128
> getname fs/namei.c:217 [inline]
> __do_sys_rename fs/namei.c:4825 [inline]
> __se_sys_rename fs/namei.c:4823 [inline]
> __x64_sys_rename+0x56/0xa0 fs/namei.c:4823
> do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> entry_SYSCALL_64_after_hwframe+0x44/0xae
> RIP: 0033:0x2000028a
> Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 98 4a 2a e9 2c b8 b6 4c 0f 05 <bf> 00
> 00 40 00 c4 a3 7b f0 c5 01 41 e2 e9 c4 22 e9 aa bb 3c 00 00
> RSP: 002b:00007ff54513dbb8 EFLAGS: 00000203 ORIG_RAX: 0000000000000052
> RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 000000002000028a
> RDX: 0000000000004c01 RSI: 0000000000000003 RDI: 0000000000400000
> RBP: 000000000000008b R08: 0000000000000005 R09: 0000000000000006
> R10: 0000000000000007 R11: 0000000000000203 R12: 000000000000000b
> R13: 000000000000000c R14: 000000000000000d R15: 00007ff54513ddc0
> NMI backtrace for cpu 2 skipped: idling at native_safe_halt
> arch/x86/include/asm/irqflags.h:51 [inline]
> NMI backtrace for cpu 2 skipped: idling at arch_safe_halt
> arch/x86/include/asm/irqflags.h:89 [inline]
> NMI backtrace for cpu 2 skipped: idling at default_idle+0xb/0x10
> arch/x86/kernel/process.c:716
> NMI backtrace for cpu 3
> CPU: 3 PID: 3019 Comm: systemd-journal Not tainted 5.15.0-rc5 #3
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> 1.13.0-1ubuntu1.1 04/01/2014
> RIP: 0033:0x7ffc3d1c69b5
> Code: 00 0f 84 b9 00 00 00 4c 63 cf 49 c1 e1 04 4d 01 c1 45 8b 10 41
> f6 c2 01 0f 85 8d 00 00 00 41 8b 40 04 83 f8 01 75 6f 0f 01 f9 <66> 90
> 48 c1 e2 20 48 09 c2 48 85 d2 78 63 49 8b 48 08 49 8b 41 28
> RSP: 002b:00007ffc3d110910 EFLAGS: 00000246
> RAX: 000000007fa7dd4e RBX: 0000000000000007 RCX: 0000000000001003
> RDX: 0000000000000096 RSI: 00007ffc3d110960 RDI: 0000000000000007
> RBP: 00007ffc3d110930 R08: 00007ffc3d1c2080 R09: 00007ffc3d1c20f0
> R10: 000000000000dd10 R11: 000000000000011d R12: 00007ffc3d1109a0
> R13: 0000000000000001 R14: 0000000000000001 R15: 0005ce1974964533
> FS: 00007f9157d9a8c0 GS: 0000000000000000
> ----------------
> Code disassembly (best guess):
> 0: 00 00 add %al,(%rax)
> 2: f6 87 88 00 00 00 03 testb $0x3,0x88(%rdi)
> 9: 75 37 jne 0x42
> b: 65 48 8b 04 25 40 f0 mov %gs:0x1f040,%rax
> 12: 01 00
> 14: f6 40 2c 02 testb $0x2,0x2c(%rax)
> 18: 48 8b 3c 24 mov (%rsp),%rdi
> 1c: 75 0f jne 0x2d
> 1e: e8 1f f4 ff ff callq 0xfffff442
> 23: eb 00 jmp 0x25
> 25: e8 d8 87 49 f8 callq 0xf8498802
> * 2a: 31 c0 xor %eax,%eax <-- trapping instruction
> 2c: c3 retq
> 2d: e8 10 f4 ff ff callq 0xfffff442
> 32: e8 cb fc ff ff callq 0xfffffd02
> 37: e8 c6 87 49 f8 callq 0xf8498802
> 3c: b8 .byte 0xb8
> 3d: 01 00 add %eax,(%rax)%
>
--
Pavel Begunkov
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: INFO: task hung in io_ring_exit_work
2023-02-27 6:23 Sanan Hasanov
@ 2023-03-01 14:53 ` Jens Axboe
0 siblings, 0 replies; 4+ messages in thread
From: Jens Axboe @ 2023-03-01 14:53 UTC (permalink / raw)
To: Sanan Hasanov, asml.silence, io-uring, linux-kernel; +Cc: syzkaller, contact
On 2/26/23 11:23 PM, Sanan Hasanov wrote:
> Good day, dear maintainers,
>
> We found a bug using a modified kernel configuration file used by syzbot.
>
> We enhanced the coverage of the configuration file using our tool, klocalizer.
>
> Kernel Branch: 6.2.0-next-20230225
> Kernel config: https://drive.google.com/file/d/1NS9N8rvftQ7BouImn2OVnC96qrNhAeuO/view?usp=share_link
> C Reproducer: Unfortunately, there is no reproducer for this bug yet.
Not sure what we're supposed to do with this, without a syzbot or
c reproducer? You can get into this condition if you SIGSTOP the
task so it can't complete its task_work, for example. But impossible
to glean anything from this report.
--
Jens Axboe
^ permalink raw reply [flat|nested] 4+ messages in thread
* INFO: task hung in io_ring_exit_work
@ 2023-02-27 6:23 Sanan Hasanov
2023-03-01 14:53 ` Jens Axboe
0 siblings, 1 reply; 4+ messages in thread
From: Sanan Hasanov @ 2023-02-27 6:23 UTC (permalink / raw)
To: axboe, asml.silence, io-uring, linux-kernel; +Cc: syzkaller, contact
Good day, dear maintainers,
We found a bug using a modified kernel configuration file used by syzbot.
We enhanced the coverage of the configuration file using our tool, klocalizer.
Kernel Branch: 6.2.0-next-20230225
Kernel config: https://drive.google.com/file/d/1NS9N8rvftQ7BouImn2OVnC96qrNhAeuO/view?usp=share_link
C Reproducer: Unfortunately, there is no reproducer for this bug yet.
Thank you!
Best regards,
Sanan Hasanov
INFO: task kworker/u16:20:839 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:20 state:D stack:25504 pid:839 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:24:842 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:24 state:D stack:25472 pid:842 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:27:845 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:27 state:D stack:25120 pid:845 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:57:870 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:57 state:D stack:25120 pid:870 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:58:871 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:58 state:D stack:24624 pid:871 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:60:874 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:60 state:D stack:24784 pid:874 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:62:875 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:62 state:D stack:24864 pid:875 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:63:876 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:63 state:D stack:24272 pid:876 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:64:877 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:64 state:D stack:25008 pid:877 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
schedule_timeout+0x26e/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5d0 kernel/sched/completion.c:106
io_ring_exit_work+0x543/0x13c0 io_uring/io_uring.c:3027
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
INFO: task kworker/u16:0:28836 blocked for more than 143 seconds.
Not tainted 6.2.0-next-20230225 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u16:0 state:D stack:25472 pid:28836 ppid:2 flags:0x00004000
Workqueue: loop2 loop_rootcg_workfn
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x24bc/0x5a60 kernel/sched/core.c:6622
schedule+0xe7/0x1b0 kernel/sched/core.c:6698
io_schedule+0xbe/0x130 kernel/sched/core.c:8884
folio_wait_bit_common+0x390/0x9b0 mm/filemap.c:1301
__folio_lock mm/filemap.c:1664 [inline]
folio_lock include/linux/pagemap.h:952 [inline]
folio_lock include/linux/pagemap.h:948 [inline]
__filemap_get_folio+0xb13/0xd20 mm/filemap.c:1936
shmem_get_folio_gfp+0x41e/0x1960 mm/shmem.c:1880
shmem_get_folio mm/shmem.c:2071 [inline]
shmem_file_read_iter+0x569/0xa50 mm/shmem.c:2748
call_read_iter include/linux/fs.h:1845 [inline]
do_iter_readv_writev+0x2df/0x3b0 fs/read_write.c:733
do_iter_read+0x2f2/0x750 fs/read_write.c:796
vfs_iter_read+0x74/0xa0 fs/read_write.c:838
lo_read_simple drivers/block/loop.c:290 [inline]
do_req_filebacked drivers/block/loop.c:500 [inline]
loop_handle_cmd drivers/block/loop.c:1879 [inline]
loop_process_work+0x15a8/0x2130 drivers/block/loop.c:1914
process_one_work+0x9ba/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8bf915f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2e/0xd90 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8bf912f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2e/0xd90 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/59:
#0: ffffffff8bf92140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
1 lock held by in:imklog/7366:
#0: ffff88811488a168 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x100 fs/file.c:1046
1 lock held by syz-fuzzer/7263:
2 locks held by kworker/u16:20/839:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90007487da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:24/842:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc900074b7da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:27/845:
#0:
ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc900074e7da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:57/870:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc900076bfda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:58/871:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc900076cfda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:60/874:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc9000775fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:62/875:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc9000776fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:63/876:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc9000777fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:64/877:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc9000781fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:0/28836:
#0: ffff8880458e9938 ((wq_completion)loop2){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880458e9938 ((wq_completion)loop2){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880458e9938 ((wq_completion)loop2){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880458e9938 ((wq_completion)loop2){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff8880458e9938 ((wq_completion)loop2){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff8880458e9938 ((wq_completion)loop2){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90009aa7da8 ((work_completion)(&lo->rootcg_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by syz-executor.2/6115:
#0: ffff8881128c00e0 (&type->s_umount_key#73/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb60 fs/super.c:228
#1: ffff8881128b5090 (&nilfs->ns_sem){++++}-{3:3}, at: init_nilfs+0x7d/0x1300 fs/nilfs2/the_nilfs.c:630
2 locks held by kworker/u16:1/6137:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a0fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:2/6138:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003887da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:3/6139:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a2fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:4/6140:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003677da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:5/6141:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003847da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:6/6142:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a3fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:7/6143:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a4fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:8/6144:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a5fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:9/6145:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a6fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:10/6146:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a7fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
2 locks held by kworker/u16:11/6147:
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888100081138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x868/0x1820 kernel/workqueue.c:2361
#1: ffffc90003a8fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x89c/0x1820 kernel/workqueue.c:2365
=============================================
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end of thread, other threads:[~2023-03-01 14:54 UTC | newest]
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2021-10-14 2:27 INFO: task hung in io_ring_exit_work Hao Sun
2021-10-14 10:00 ` Pavel Begunkov
2023-02-27 6:23 Sanan Hasanov
2023-03-01 14:53 ` Jens Axboe
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