INFO: task syz-executor.4:5616 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-02172-g6b1f86f8e9c7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28104 pid: 5616 ppid: 3641 flags:0x20004004
Call Trace:
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: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+0x4f9/0x2a30 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x4b0/0x28c0 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:149 [inline]
exit_to_user_mode_loop kernel/entry/common.c:187 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:315
__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: 0023:0xf7f0e549
RSP: 002b:00000000f7f0967c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 00000000f6f5afa8 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f6f5afac
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: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-02172-g6b1f86f8e9c7 #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: 5619 Comm: iou-wrk-5616 Tainted: G W 5.17.0-syzkaller-02172-g6b1f86f8e9c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__io_import_iovec+0x2bc/0x1360 fs/io_uring.c:3529
Code: 85 db 0f 85 69 07 00 00 e8 d1 d1 8c ff 48 8b 54 24 10 4c 89 e6 4d 89 e8 8b 7c 24 08 49 8d 4d 40 e8 d9 e9 fd 01 31 ff 4c 63 e0 <4c> 89 e6 e8 9c d5 8c ff 4d 85 e4 0f 84 6e 09 00 00 e8 9e d1 8c ff
RSP: 0018:ffffc90003b5f860 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802133d700 RSI: ffffffff83e9d478 RDI: 0000000000000000
RBP: ffff88807ae5a780 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff83e9d359 R11: 0000000000000001 R12: 0000000000000000
R13: ffffc90003b5f9f8 R14: 0000000000000000 R15: ffff88807ae5a7c2
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f7f09b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c00829b470 CR3: 000000001d98c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
io_import_iovec fs/io_uring.c:3554 [inline]
io_read+0xcef/0x12a0 fs/io_uring.c:3813
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+0xb1c/0x1ab0 fs/io-wq.c:595
io_wqe_worker+0x637/0xdb0 fs/io-wq.c:642
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 85 db test %ebx,%ebx
2: 0f 85 69 07 00 00 jne 0x771
8: e8 d1 d1 8c ff callq 0xff8cd1de
d: 48 8b 54 24 10 mov 0x10(%rsp),%rdx
12: 4c 89 e6 mov %r12,%rsi
15: 4d 89 e8 mov %r13,%r8
18: 8b 7c 24 08 mov 0x8(%rsp),%edi
1c: 49 8d 4d 40 lea 0x40(%r13),%rcx
20: e8 d9 e9 fd 01 callq 0x1fde9fe
25: 31 ff xor %edi,%edi
27: 4c 63 e0 movslq %eax,%r12
* 2a: 4c 89 e6 mov %r12,%rsi <-- trapping instruction
2d: e8 9c d5 8c ff callq 0xff8cd5ce
32: 4d 85 e4 test %r12,%r12
35: 0f 84 6e 09 00 00 je 0x9a9
3b: e8 9e d1 8c ff callq 0xff8cd1de