INFO: task syz-executor.5:10875 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-13034-gd888c83fcec7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27592 pid:10875 ppid: 3625 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10512 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10582
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2904
arch_do_signal_or_restart+0x88/0x1a10 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:180 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:215
__syscall_exit_to_user_mode_work kernel/entry/common.c:297 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:308
do_syscall_64+0x42/0x80 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f716b689049
RSP: 002b:00007f716c84e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f716b79bf68 RCX: 00007f716b689049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f716b79bf68
RBP: 00007f716b79bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f716b79bf6c
R13: 00007f716bccfb1f R14: 00007f716c84e300 R15: 0000000000022000
</TASK>
INFO: task syz-executor.3:10880 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-13034-gd888c83fcec7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28400 pid:10880 ppid: 3624 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10512 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10582
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2904
arch_do_signal_or_restart+0x88/0x1a10 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:180 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:215
__syscall_exit_to_user_mode_work kernel/entry/common.c:297 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:308
do_syscall_64+0x42/0x80 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8488089049
RSP: 002b:00007f848911a218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f848819bf68 RCX: 00007f8488089049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f848819bf68
RBP: 00007f848819bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f848819bf6c
R13: 00007f84886cfb1f R14: 00007f848911a300 R15: 0000000000022000
</TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-13034-gd888c83fcec7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__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:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10895 Comm: iou-wrk-10880 Tainted: G W 5.17.0-syzkaller-13034-gd888c83fcec7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iov_iter_iovec include/linux/uio.h:129 [inline]
RIP: 0010:loop_rw_iter+0x307/0x530 fs/io_uring.c:3597
Code: 01 00 00 49 8b 44 24 08 48 8d 7b 08 48 89 fa 48 c1 ea 03 49 01 c6 80 3c 2a 00 0f 85 a1 01 00 00 48 8b 5b 08 48 29 c3 4c 39 fb <49> 0f 47 df e8 00 a6 8e ff 48 8b 04 24 48 8d 78 28 48 89 f8 48 c1
RSP: 0018:ffffc90014dc7900 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000
RDX: 1ffff920029b8f48 RSI: ffffffff81e9f6ab RDI: ffffc90014dc7a40
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81e9f69d R11: 0000000000000002 R12: ffffc90014dc79f8
R13: ffff888051214a00 R14: 0000000020000040 R15: 0000000000000012
FS: 00007f848911a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdae358468 CR3: 000000001fccd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
io_iter_do_read fs/io_uring.c:3792 [inline]
io_iter_do_read fs/io_uring.c:3787 [inline]
io_read+0xee7/0x1290 fs/io_uring.c:3860
io_issue_sqe+0x813/0x8380 fs/io_uring.c:7172
io_wq_submit_work+0x1ed/0x590 fs/io_uring.c:7340
io_worker_handle_work+0xb1c/0x1ab0 fs/io-wq.c:597
io_wqe_worker+0x637/0xdb0 fs/io-wq.c:644
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
----------------
Code disassembly (best guess):
0: 01 00 add %eax,(%rax)
2: 00 49 8b add %cl,-0x75(%rcx)
5: 44 24 08 rex.R and $0x8,%al
8: 48 8d 7b 08 lea 0x8(%rbx),%rdi
c: 48 89 fa mov %rdi,%rdx
f: 48 c1 ea 03 shr $0x3,%rdx
13: 49 01 c6 add %rax,%r14
16: 80 3c 2a 00 cmpb $0x0,(%rdx,%rbp,1)
1a: 0f 85 a1 01 00 00 jne 0x1c1
20: 48 8b 5b 08 mov 0x8(%rbx),%rbx
24: 48 29 c3 sub %rax,%rbx
27: 4c 39 fb cmp %r15,%rbx
* 2a: 49 0f 47 df cmova %r15,%rbx <-- trapping instruction
2e: e8 00 a6 8e ff callq 0xff8ea633
33: 48 8b 04 24 mov (%rsp),%rax
37: 48 8d 78 28 lea 0x28(%rax),%rdi
3b: 48 89 f8 mov %rdi,%rax
3e: 48 rex.W
3f: c1 .byte 0xc1