INFO: task syz-executor.1:18887 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28208 pid:18887 ppid: 8029 flags:0x00004000
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_del_tctx_node+0x109/0x20a fs/io_uring.c:9777
io_uring_clean_tctx fs/io_uring.c:9793 [inline]
io_uring_cancel_generic+0x5d5/0x690 fs/io_uring.c:9882
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x60c/0x2b40 kernel/exit.c:787
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
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:172 [inline]
exit_to_user_mode_prepare+0x17d/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: 0033:0x7f1881287ae9
RSP: 002b:00007f187e7dc218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f188139b028 RCX: 00007f1881287ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f188139b028
RBP: 00007f188139b020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f188139b02c
R13: 00007ffc14d57c7f R14: 00007f187e7dc300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6213:
#0: ffff8880733cfc70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.1/18846:
1 lock held by syz-executor.1/18887:
#0: ffff88807e7090a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9777
1 lock held by syz-executor.1/18888:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 18846 Comm: syz-executor.1 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:199 [inline]
RIP: 0010:__lock_acquire+0x144a/0x54a0 kernel/locking/lockdep.c:5023
Code: f8 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 00 2a f7 8f e8 6e fd 61 00 48 0f a3 1d d6 b7 9a 0e <0f> 83 90 05 00 00 48 8d 1c 5b 48 c1 e3 06 48 81 c3 20 2e f7 8f 48
RSP: 0018:ffffc9000de1f3e0 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 000000000000084d RCX: ffffffff815c7222
RDX: fffffbfff1fee562 RSI: 0000000000000008 RDI: ffffffff8ff72b08
RBP: 0000000000000003 R08: 0000000000000000 R09: ffffffff8ff72b0f
R10: fffffbfff1fee561 R11: 000000000008808a R12: ffff888037dc4488
R13: ffff888037dc3a00 R14: 0000000000000000 R15: 9a66ba33791b20c9
FS: 00007f187e7fd700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1307a14050 CR3: 000000007cc79000 CR4: 0000000000350ee0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
is_bpf_text_address+0x36/0x170 kernel/bpf/core.c:715
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:4445 [inline]
io_provide_buffers fs/io_uring.c:4479 [inline]
io_issue_sqe+0x2887/0x7060 fs/io_uring.c:6748
__io_queue_sqe fs/io_uring.c:7018 [inline]
io_queue_sqe fs/io_uring.c:7060 [inline]
io_submit_sqe fs/io_uring.c:7263 [inline]
io_submit_sqes+0x1bca/0x8a20 fs/io_uring.c:7369
__do_sys_io_uring_enter+0xf6e/0x1f50 fs/io_uring.c:10070
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f1881287ae9
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:00007f187e7fd188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f188139af60 RCX: 00007f1881287ae9
RDX: 0000000000000000 RSI: 0000000000002905 RDI: 0000000000000003
RBP: 00007f18812e1f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc14d57c7f R14: 00007f187e7fd300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: f8 clc
1: 66 81 e3 ff 1f and $0x1fff,%bx
6: 0f b7 db movzwl %bx,%ebx
9: be 08 00 00 00 mov $0x8,%esi
e: 48 89 d8 mov %rbx,%rax
11: 48 c1 f8 06 sar $0x6,%rax
15: 48 8d 3c c5 00 2a f7 lea -0x7008d600(,%rax,8),%rdi
1c: 8f
1d: e8 6e fd 61 00 callq 0x61fd90
22: 48 0f a3 1d d6 b7 9a bt %rbx,0xe9ab7d6(%rip) # 0xe9ab800
29: 0e
* 2a: 0f 83 90 05 00 00 jae 0x5c0 <-- trapping instruction
30: 48 8d 1c 5b lea (%rbx,%rbx,2),%rbx
34: 48 c1 e3 06 shl $0x6,%rbx
38: 48 81 c3 20 2e f7 8f add $0xffffffff8ff72e20,%rbx
3f: 48 rex.W