INFO: task kworker/u4:7:12132 blocked for more than 143 seconds.
Not tainted 5.16.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:7 state:D stack:25888 pid:12132 ppid: 2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
io_uring_try_cancel_iowq fs/io_uring.c:9644 [inline]
io_uring_try_cancel_requests+0x124/0x713 fs/io_uring.c:9674
io_ring_exit_work+0xff/0xbd0 fs/io_uring.c:9483
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6222:
#0: ffff88807beceaf0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:994
3 locks held by kworker/u4:7/12132:
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000ba7fdb0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffff88807930d0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_try_cancel_iowq fs/io_uring.c:9644 [inline]
#2: ffff88807930d0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_try_cancel_requests+0x124/0x713 fs/io_uring.c:9674
2 locks held by kworker/u4:5/7804:
3 locks held by syz-executor.1/16591:
1 lock held by syz-executor.1/16597:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc4-syzkaller #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+0x1b3/0x230 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+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 21172 Comm: kworker/0:0 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:417 [inline]
RIP: 0010:__lock_acquire+0x9ef/0x54a0 kernel/locking/lockdep.c:5015
Code: 89 fa 48 c1 ea 03 0f b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 95 38 00 00 41 32 5c 24 21 83 e3 60 0f 85 ee 0b 00 00 <4c> 89 f8 44 89 7c 24 40 48 c1 e8 20 89 c3 89 44 24 60 44 01 f8 c1
RSP: 0018:ffffc9000abf7a98 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815c6e2a
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88807d618ad1
RBP: ffff88807d618ad2 R08: 0000000000000000 R09: ffffffff8ff73adf
R10: fffffbfff1fee75b R11: 0000000000000000 R12: ffff88807d618ab0
R13: ffff88807d618000 R14: 0000000000000000 R15: b0cf6446bc47d484
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00a67d900 CR3: 00000000159ad000 CR4: 00000000003506f0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
wg_ratelimiter_gc_entries+0x5d/0x430 drivers/net/wireguard/ratelimiter.c:63
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 89 fa mov %edi,%edx
2: 48 c1 ea 03 shr $0x3,%rdx
6: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
a: 48 89 fa mov %rdi,%rdx
d: 83 e2 07 and $0x7,%edx
10: 38 d0 cmp %dl,%al
12: 7f 08 jg 0x1c
14: 84 c0 test %al,%al
16: 0f 85 95 38 00 00 jne 0x38b1
1c: 41 32 5c 24 21 xor 0x21(%r12),%bl
21: 83 e3 60 and $0x60,%ebx
24: 0f 85 ee 0b 00 00 jne 0xc18
* 2a: 4c 89 f8 mov %r15,%rax <-- trapping instruction
2d: 44 89 7c 24 40 mov %r15d,0x40(%rsp)
32: 48 c1 e8 20 shr $0x20,%rax
36: 89 c3 mov %eax,%ebx
38: 89 44 24 60 mov %eax,0x60(%rsp)
3c: 44 01 f8 add %r15d,%eax
3f: c1 .byte 0xc1