INFO: task syz-executor.4:8630 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28040 pid: 8630 ppid: 21424 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9523
io_uring_release+0x42/0x46 fs/io_uring.c:9552
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0411d3fb32
RSP: 002b:00007f040f2940f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: 0000000020400000 RBX: 0000000000008011 RCX: 00007f0411d3fb32
RDX: 0000000000000003 RSI: 0000000000200000 RDI: 0000000020400000
RBP: 0000000020400000 R08: 0000000000000003 R09: 0000000010000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020400000 R14: 0000000020000100 R15: 0000000020002000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b983a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6241:
1 lock held by syz-executor.4/8618:
1 lock held by syz-executor.4/8630:
#0: ffff888038adf0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9523
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-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:105
nmi_trigger_cpumask_backtrace+0x1ae/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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8618 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_lockdep_current_cpu_online+0x14/0x150 kernel/rcu/tree.c:1166
Code: 48 8b 44 24 18 e9 41 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 65 8b 15 c9 23 9f 7e 81 e2 00 00 f0 00 b8 01 00 00 00 75 0a <8b> 15 3a 9e 0d 0c 85 d2 75 01 c3 55 53 65 ff 05 a8 23 9f 7e e8 03
RSP: 0018:ffffc9000a6b77a8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815cdb51
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffffff8b35b8a8
RBP: 1ffff920014d6efa R08: 0000000000000000 R09: ffffffff8d70e997
R10: fffffbfff1ae1d32 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88803050ba00 R15: ffff8881bbf84f80
FS: 00007f040f2b5700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd93566000 CR3: 000000007dbe8000 CR4: 0000000000350ee0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5648
rcu_lock_release include/linux/rcupdate.h:273 [inline]
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
is_bpf_text_address+0x99/0x170 kernel/bpf/core.c:710
kernel_text_address kernel/extable.c:124 [inline]
kernel_text_address+0x39/0x80 kernel/extable.c:93
__kernel_text_address+0x9/0x30 kernel/extable.c:78
unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:590 [inline]
io_add_buffers fs/io_uring.c:4405 [inline]
io_provide_buffers fs/io_uring.c:4439 [inline]
io_issue_sqe+0x2887/0x7010 fs/io_uring.c:6705
__io_queue_sqe fs/io_uring.c:6974 [inline]
io_req_task_submit+0xce/0x450 fs/io_uring.c:2282
tctx_task_work+0x1b3/0x630 fs/io_uring.c:2206
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_signal include/linux/tracehook.h:214 [inline]
handle_signal_work kernel/entry/common.c:146 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x256/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0411d3fae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f040f2b5188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000006700 RBX: 00007f0411e52f60 RCX: 00007f0411d3fae9
RDX: 0000000000000000 RSI: 0000000000006700 RDI: 0000000000000004
RBP: 00007f0411d99f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff4387228f R14: 00007f040f2b5300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 48 8b 44 24 18 mov 0x18(%rsp),%rax
5: e9 41 fe ff ff jmpq 0xfffffe4b
a: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
11: 00 00 00 00
15: 90 nop
16: 65 8b 15 c9 23 9f 7e mov %gs:0x7e9f23c9(%rip),%edx # 0x7e9f23e6
1d: 81 e2 00 00 f0 00 and $0xf00000,%edx
23: b8 01 00 00 00 mov $0x1,%eax
28: 75 0a jne 0x34
* 2a: 8b 15 3a 9e 0d 0c mov 0xc0d9e3a(%rip),%edx # 0xc0d9e6a <-- trapping instruction
30: 85 d2 test %edx,%edx
32: 75 01 jne 0x35
34: c3 retq
35: 55 push %rbp
36: 53 push %rbx
37: 65 ff 05 a8 23 9f 7e incl %gs:0x7e9f23a8(%rip) # 0x7e9f23e6
3e: e8 .byte 0xe8
3f: 03 .byte 0x3