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workqueue: cannot queue hci_rx_work on wq hci0
WARNING: kernel/workqueue.c:2298 at __queue_work+0xd67/0x1010 kernel/workqueue.c:2296, CPU#0: syz.1.935/10692
Modules linked in:
CPU: 0 UID: 0 PID: 10692 Comm: syz.1.935 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__queue_work+0xd87/0x1010 kernel/workqueue.c:2296
Code: 01 00 00 4c 8d 35 19 62 00 0e 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 43 23 a1 00 49 8b 75 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:ffffc90003a47b20 EFLAGS: 00010046
RAX: 1ffff1100591197d RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffff8880114f9168 RSI: ffffffff8a1a6690 RDI: ffffffff8f8da4e0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100591197b R12: dffffc0000000000
R13: ffff88802c88cbe8 R14: ffffffff8f8da4e0 R15: ffff8880114f9168
FS:  00007f950a0446c0(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f950a043ff8 CR3: 0000000067744000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 queue_work_on+0x106/0x1d0 kernel/workqueue.c:2432
 queue_work include/linux/workqueue.h:698 [inline]
 hci_recv_frame+0x625/0x7c0 net/bluetooth/hci_core.c:2969
 vhci_get_user drivers/bluetooth/hci_vhci.c:520 [inline]
 vhci_write+0x35a/0x4a0 drivers/bluetooth/hci_vhci.c:616
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x629/0xba0 fs/read_write.c:688
 ksys_write+0x156/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f950bded68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f950a043fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f950a0446c0 RCX: 00007f950bded68e
RDX: 0000000000000007 RSI: 0000200000000180 RDI: 00000000000000ca
RBP: 00007f950bec2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f950c0a6218 R14: 00007f950c0a6180 R15: 00007ffd64c8cc58
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	4c 8d 35 19 62 00 0e 	lea    0xe006219(%rip),%r14        # 0xe006222
   9:	4c 89 e8             	mov    %r13,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  15:	74 08                	je     0x1f
  17:	4c 89 ef             	mov    %r13,%rdi
  1a:	e8 43 23 a1 00       	call   0xa12362
  1f:	49 8b 75 00          	mov    0x0(%r13),%rsi
  23:	4c 89 f7             	mov    %r14,%rdi
  26:	4c 89 fa             	mov    %r15,%rdx
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	48 83 c4 58          	add    $0x58,%rsp
  32:	5b                   	pop    %rbx
  33:	41 5c                	pop    %r12
  35:	41 5d                	pop    %r13
  37:	41 5e                	pop    %r14
  39:	41 5f                	pop    %r15
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3