------------[ cut here ]------------
WARNING: CPU: 1 PID: 7940 at kernel/workqueue.c:1441 __queue_work+0xddc/0xf90
Modules linked in:
CPU: 1 PID: 7940 Comm: syz.2.820 Not tainted 6.1.103-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__queue_work+0xddc/0xf90 kernel/workqueue.c:1441
Code: 8b 3c 24 e8 66 9c 88 00 e9 d9 fc ff ff e8 4c 20 31 00 89 ee 48 c7 c7 80 99 1d 8d e8 fe 72 0a 03 e9 1e fc ff ff e8 34 20 31 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 1e 20 31 00
RSP: 0018:ffffc900001e0af8 EFLAGS: 00010046
RAX: ffffffff8159806c RBX: 00000000000b0012 RCX: ffff888025b5bb80
RDX: 0000000080000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff815a6db5 R09: fffffbfff1d33896
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000008 R15: ffff888059269800
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a9636a90b0 CR3: 0000000028f07000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1544 [inline]
__run_timers+0x6a8/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 9f a8 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000310f380 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000621e7c RCX: ffffffff91f31103
RDX: dffffc0000000000 RSI: ffffffff8b0c13e0 RDI: ffffffff8b5d5de0
RBP: ffffc9000310f4c8 R08: dffffc0000000000 R09: fffffbfff22fb155
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000621e78
R13: dffffc0000000000 R14: ffffc9000310f3e0 R15: 0000000000000246
__flush_workqueue+0x170/0x1610 kernel/workqueue.c:2812
drain_workqueue+0xc5/0x390 kernel/workqueue.c:2977
hci_dev_close_sync+0x47d/0x1020 net/bluetooth/hci_sync.c:5016
hci_dev_do_close net/bluetooth/hci_core.c:510 [inline]
hci_unregister_dev+0x207/0x500 net/bluetooth/hci_core.c:2704
vhci_release+0x7f/0xd0 drivers/bluetooth/hci_vhci.c:573
__fput+0x3f6/0x8d0 fs/file_table.c:320
task_work_run+0x246/0x300 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0xa73/0x26a0 kernel/exit.c:871
do_group_exit+0x202/0x2b0 kernel/exit.c:1021
get_signal+0x16f7/0x17d0 kernel/signal.c:2870
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcaa95779f9
Code: Unable to access opcode bytes at 0x7fcaa95779cf.
RSP: 002b:00007fcaaa2d2048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 0000000000000040 RBX: 00007fcaa9706058 RCX: 00007fcaa95779f9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000006
RBP: 00007fcaa95e58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fcaa9706058 R15: 00007ffdc06fe598
----------------
Code disassembly (best guess):
0: 2b 00 sub (%rax),%eax
2: 74 08 je 0xc
4: 4c 89 f7 mov %r14,%rdi
7: e8 9f a8 77 00 call 0x77a8ab
c: f6 44 24 61 02 testb $0x2,0x61(%rsp)
11: 0f 85 84 01 00 00 jne 0x19b
17: 41 f7 c7 00 02 00 00 test $0x200,%r15d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction
31: 00 00
33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1)
3a: 00 00
3c: 43 rex.XB
3d: c7 .byte 0xc7
3e: 44 rex.R
3f: 25 .byte 0x25