------------[ cut here ]------------
WARNING: CPU: 1 PID: 24617 at kernel/workqueue.c:1726 is_chained_work kernel/workqueue.c:1672 [inline]
WARNING: CPU: 1 PID: 24617 at kernel/workqueue.c:1726 __queue_work+0xd49/0x1020 kernel/workqueue.c:1725
Modules linked in:
CPU: 1 PID: 24617 Comm: syz-executor Not tainted 6.6.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__queue_work+0xd49/0x1020 kernel/workqueue.c:1725
Code: 4c 89 f7 48 89 de 89 e9 e8 d4 e3 00 00 48 8b 5c 24 10 e9 10 ff ff ff e8 75 38 2f 00 eb 0c e8 6e 38 2f 00 eb 05 e8 67 38 2f 00 <0f> 0b 48 83 c4 78 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 51 38 2f 00
RSP: 0018:ffffc900001f0b10 EFLAGS: 00010046
RAX: ffffffff81565d5b RBX: 0000000000000100 RCX: ffff88806113bc00
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: ffff88805e2429c0 R08: ffffffff8e49ab2f R09: 1ffffffff1c93565
R10: dffffc0000000000 R11: fffffbfff1c93566 R12: 0000000000000008
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88805e242800
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00391f000 CR3: 0000000030b63000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x16e/0x530 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1746 [inline]
 __run_timers+0x558/0x7d0 kernel/time/timer.c:2022
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__cancel_work_timer+0x462/0x520 kernel/workqueue.c:3527
Code: 67 0b 48 3d 20 b3 bd 8c 74 20 e8 29 f4 2e 00 48 c7 c7 e0 b2 bd 8c be 03 00 00 00 ba 01 00 00 00 48 89 d9 e8 d0 ae 0d 00 eb 05 <e8> 09 f4 2e 00 31 ff 8b 5c 24 08 89 de e8 ac f7 2e 00 85 db 0f 95
RSP: 0018:ffffc900050bf8c0 EFLAGS: 00000246
RAX: ffffffff8cbdb320 RBX: ffff88805e7daa08 RCX: ffffffff8156a17b
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88805e7daa08
RBP: ffffc900050bf9e0 R08: ffff88805e7daa0f R09: 1ffff1100bcfb541
R10: dffffc0000000000 R11: ffffed100bcfb542 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff1100bcfb541 R15: 0000001fffffffc0
 l2cap_conn_del+0x123/0x660 net/bluetooth/l2cap_core.c:1775
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1983 [inline]
 hci_conn_hash_flush+0x107/0x220 net/bluetooth/hci_conn.c:2539
 hci_dev_close_sync+0x962/0xfb0 net/bluetooth/hci_sync.c:5227
 hci_dev_do_close net/bluetooth/hci_core.c:505 [inline]
 hci_unregister_dev+0x206/0x500 net/bluetooth/hci_core.c:2683
 vhci_release+0x83/0xd0 drivers/bluetooth/hci_vhci.c:666
 __fput+0x234/0x970 fs/file_table.c:384
 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x903/0x23c0 kernel/exit.c:874
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1023
 __do_sys_exit_group kernel/exit.c:1034 [inline]
 __se_sys_exit_group kernel/exit.c:1032 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1032
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f052778e929
Code: Unable to access opcode bytes at 0x7f052778e8ff.
RSP: 002b:00007fffdc5c8038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f052778e929
RDX: 00007f05277907bc RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 000000000000000c R09: 0000000000000007
R10: 00007fffdc5c8694 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f05284e4670 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	67 0b 48 3d          	or     0x3d(%eax),%ecx
   4:	20 b3 bd 8c 74 20    	and    %dh,0x20748cbd(%rbx)
   a:	e8 29 f4 2e 00       	call   0x2ef438
   f:	48 c7 c7 e0 b2 bd 8c 	mov    $0xffffffff8cbdb2e0,%rdi
  16:	be 03 00 00 00       	mov    $0x3,%esi
  1b:	ba 01 00 00 00       	mov    $0x1,%edx
  20:	48 89 d9             	mov    %rbx,%rcx
  23:	e8 d0 ae 0d 00       	call   0xdaef8
  28:	eb 05                	jmp    0x2f
* 2a:	e8 09 f4 2e 00       	call   0x2ef438 <-- trapping instruction
  2f:	31 ff                	xor    %edi,%edi
  31:	8b 5c 24 08          	mov    0x8(%rsp),%ebx
  35:	89 de                	mov    %ebx,%esi
  37:	e8 ac f7 2e 00       	call   0x2ef7e8
  3c:	85 db                	test   %ebx,%ebx
  3e:	0f                   	.byte 0xf
  3f:	95                   	xchg   %eax,%ebp