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workqueue: cannot queue hci_conn_timeout on wq hci2
WARNING: kernel/workqueue.c:2271 at __queue_work+0xd53/0x1020 kernel/workqueue.c:2269, CPU#0: syz.7.1370/15512
Modules linked in:
CPU: 0 UID: 0 PID: 15512 Comm: syz.7.1370 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+0xd7e/0x1020 kernel/workqueue.c:2269
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 23 64 a2 00 49 8b 75 00 49 81 c7 78 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc
RSP: 0018:ffffc90000007c10 EFLAGS: 00010086
RAX: 1ffff1100235314b RBX: 0000000000000008 RCX: ffff88808bee8000
RDX: ffff888036b67178 RSI: ffffffff8aa31a10 RDI: ffffffff9014bb10
RBP: 0000000000000100 R08: ffffffff9011c4b7 R09: 1ffffffff2023896
R10: dffffc0000000000 R11: ffffffff818d83c0 R12: dffffc0000000000
R13: ffff888011a98a58 R14: ffffffff9014bb10 R15: ffff888036b67178
FS:  00007fee887726c0(0000) GS:ffff888125455000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c425635 CR3: 00000000346be000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 call_timer_fn+0x192/0x640 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
 handle_softirqs+0x22a/0x870 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_release+0x2d7/0x3d0 kernel/locking/lockdep.c:5893
Code: 25 7b 11 00 00 00 00 eb b5 e8 85 12 0e 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 05 e0 7a 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d b2 4b 73
RSP: 0018:ffffc9000486f5a8 EFLAGS: 00000282
RAX: 6cdade04516c3100 RBX: 0000000000000206 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e16b532 RDI: ffffffff8c27f980
RBP: ffff88808bee8b18 R08: ffff88805db8e4a7 R09: 1ffff1100bb71c94
R10: dffffc0000000000 R11: ffffed100bb71c95 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888020b90eb8 R15: ffff88808bee8000
 __mutex_unlock_slowpath+0xd3/0x7d0 kernel/locking/mutex.c:938
 __unix_dgram_recvmsg+0x9da/0xd50 net/unix/af_unix.c:2654
 sock_recvmsg_nosec+0x186/0x1c0 net/socket.c:1093
 ____sys_recvmsg+0x245/0x510 net/socket.c:-1
 ___sys_recvmsg+0x215/0x590 net/socket.c:2872
 do_recvmmsg+0x334/0x800 net/socket.c:2967
 __sys_recvmmsg net/socket.c:3041 [inline]
 __do_sys_recvmmsg net/socket.c:3064 [inline]
 __se_sys_recvmmsg net/socket.c:3057 [inline]
 __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3057
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fee8799c629
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:00007fee88772028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fee87c16090 RCX: 00007fee8799c629
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007fee87a32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fee87c16128 R14: 00007fee87c16090 R15: 00007fffaf88a1b8
 </TASK>
----------------
Code disassembly (best guess):
   0:	83 c5 18             	add    $0x18,%ebp
   3:	4c 89 e8             	mov    %r13,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   f:	74 08                	je     0x19
  11:	4c 89 ef             	mov    %r13,%rdi
  14:	e8 23 64 a2 00       	call   0xa2643c
  19:	49 8b 75 00          	mov    0x0(%r13),%rsi
  1d:	49 81 c7 78 01 00 00 	add    $0x178,%r15
  24:	4c 89 f7             	mov    %r14,%rdi
  27:	4c 89 fa             	mov    %r15,%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 83 c4 58          	add    $0x58,%rsp
  33:	5b                   	pop    %rbx
  34:	41 5c                	pop    %r12
  36:	41 5d                	pop    %r13
  38:	41 5e                	pop    %r14
  3a:	41 5f                	pop    %r15
  3c:	5d                   	pop    %rbp
  3d:	c3                   	ret
  3e:	cc                   	int3
  3f:	cc                   	int3