------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci5
WARNING: kernel/workqueue.c:2270 at __queue_work+0xd08/0x1150 kernel/workqueue.c:2269, CPU#0: syz.6.5294/26960
Modules linked in:
CPU: 0 UID: 0 PID: 26960 Comm: syz.6.5294 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__queue_work+0xd0c/0x1150 kernel/workqueue.c:2269
Code: 00 00 00 fc ff df 49 8d 94 24 78 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 04 04 00 00 48 8d 3d d8 d0 0c 0f 48 8b 75 18 <67> 48 0f b9 3a e9 2a f7 ff ff e8 a5 e2 38 00 90 0f 0b 90 e9 b2 f5
RSP: 0018:ffffc90000007be8 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff110045f8151
RDX: ffff8880366d4978 RSI: ffffffff8a833e50 RDI: ffffffff90dca1e0
RBP: ffff888022fc0a70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff8880366d4800
R13: 1ffff92000000f8f R14: ffffffff81cfe220 R15: 0000000000000001
FS: 00007f2c70c7b6c0(0000) GS:ffff888124346000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 0000000098392000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x19a/0x670 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers+0x570/0xb30 kernel/time/timer.c:2373
__run_timer_base kernel/time/timer.c:2385 [inline]
__run_timer_base kernel/time/timer.c:2377 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2394
run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2404
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x20 kernel/kcov.c:314
Code: bf 03 00 00 00 e9 58 fe ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 2a fe ff ff 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc900102a7930 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc900102a7a80 RCX: ffffffff81f46bc7
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000000
RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000004 R14: ffff88808ccb0000 R15: dffffc0000000000
__mod_timer+0xb7/0xca0 kernel/time/timer.c:1032
add_timer+0x62/0x90 kernel/time/timer.c:1249
schedule_timeout+0x122/0x280 kernel/time/sleep_timeout.c:98
snd_rawmidi_drain_output+0x72e/0xb10 sound/core/rawmidi.c:263
close_substream.part.0+0x412/0x880 sound/core/rawmidi.c:551
close_substream sound/core/rawmidi.c:585 [inline]
rawmidi_release_priv+0x236/0x2a0 sound/core/rawmidi.c:580
snd_rawmidi_release+0x5a/0xf0 sound/core/rawmidi.c:610
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x100/0x4a0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x67c/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2c6fd9c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2c70c7b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: 000000000000f000 RBX: 00007f2c70015fa0 RCX: 00007f2c6fd9c799
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000008
RBP: 00007f2c6fe32bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c70016038 R14: 00007f2c70015fa0 R15: 00007ffdce27b248
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 fc add %bh,%ah
4: ff lcall (bad)
5: df 49 8d fisttps -0x73(%rcx)
8: 94 xchg %eax,%esp
9: 24 78 and $0x78,%al
b: 01 00 add %eax,(%rax)
d: 00 48 89 add %cl,-0x77(%rax)
10: f9 stc
11: 48 c1 e9 03 shr $0x3,%rcx
15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
19: 0f 85 04 04 00 00 jne 0x423
1f: 48 8d 3d d8 d0 0c 0f lea 0xf0cd0d8(%rip),%rdi # 0xf0cd0fe
26: 48 8b 75 18 mov 0x18(%rbp),%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 2a f7 ff ff jmp 0xfffff75e
34: e8 a5 e2 38 00 call 0x38e2de
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: b2 f5 mov $0xf5,%dl