INFO: task syz-executor.3:7694 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26952 pid: 7694 ppid: 3637 flags:0x20004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x1f0 kernel/sched/core.c:6376
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1264 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1299
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+0x4f9/0x29d0 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x45a/0x2490 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:186 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:221
__syscall_exit_to_user_mode_work kernel/entry/common.c:303 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:314
__do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6ec7549
RSP: 002b:00000000f58c167c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 00000000f7023fa8 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f7023fac
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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: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:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7698 Comm: iou-wrk-7694 Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0xa9/0x720 kernel/locking/lockdep.c:5650
Code: 07 0f 87 f6 04 00 00 89 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 10 1b 94 8d e8 8f b8 62 00 48 0f a3 1d 57 66 36 0c <0f> 82 60 04 00 00 48 c7 c3 ec 4e 94 8d 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000e2e7758 EFLAGS: 00000247
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815db4b1
RDX: fffffbfff1b28363 RSI: 0000000000000008 RDI: ffffffff8d941b10
RBP: 1ffff92001c5ceed R08: 0000000000000000 R09: ffffffff8d941b17
R10: fffffbfff1b28362 R11: 0000000000000000 R12: ffff8880733d5098
R13: fffffffffffffff5 R14: ffffc9000e2e79f8 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f58c1b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000055617194c600 CR3: 0000000048451000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ldsem_up_read+0x18/0x80 drivers/tty/tty_ldsem.c:393
tty_read+0x4d6/0x5d0 drivers/tty/tty_io.c:934
call_read_iter include/linux/fs.h:2068 [inline]
io_iter_do_read fs/io_uring.c:3789 [inline]
io_read+0x330/0x12a0 fs/io_uring.c:3859
io_issue_sqe+0x813/0x8390 fs/io_uring.c:7172
io_wq_submit_work+0x1ed/0x590 fs/io_uring.c:7340
io_worker_handle_work+0xad6/0x1b30 fs/io-wq.c:595
io_wqe_worker+0x606/0xd40 fs/io-wq.c:642
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 0f 87 f6 04 00 00 ja 0x4fc
6: 89 db mov %ebx,%ebx
8: be 08 00 00 00 mov $0x8,%esi
d: 48 89 d8 mov %rbx,%rax
10: 48 c1 f8 06 sar $0x6,%rax
14: 48 8d 3c c5 10 1b 94 lea -0x726be4f0(,%rax,8),%rdi
1b: 8d
1c: e8 8f b8 62 00 callq 0x62b8b0
21: 48 0f a3 1d 57 66 36 bt %rbx,0xc366657(%rip) # 0xc366680
28: 0c
* 29: 0f 82 60 04 00 00 jb 0x48f <-- trapping instruction
2f: 48 c7 c3 ec 4e 94 8d mov $0xffffffff8d944eec,%rbx
36: 48 rex.W
37: b8 00 00 00 00 mov $0x0,%eax
3c: 00 fc add %bh,%ah
3e: ff .byte 0xff