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workqueue: cannot queue hci_rx_work on wq hci0
WARNING: kernel/workqueue.c:2298 at __queue_work+0xd87/0x1090 kernel/workqueue.c:2296, CPU#0: syz.1.1410/9240
Modules linked in:
CPU: 0 UID: 0 PID: 9240 Comm: syz.1.1410 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__queue_work+0xda4/0x1090 kernel/workqueue.c:2296
Code: 81 c7 68 01 00 00 4c 8d 35 39 04 01 0e 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 56 f0 a1 00 49 8b 75 18 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef
RSP: 0018:ffffc9001db1fb08 EFLAGS: 00010046
RAX: 1ffff110065d197d RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffff88803708c168 RSI: ffffffff8a1ccb40 RDI: ffffffff8f8e62c0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10065d197b R12: dffffc0000000000
R13: ffff888032e8cbd0 R14: ffffffff8f8e62c0 R15: ffff88803708c168
FS:  00007ff84865d6c0(0000) GS:ffff888125f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff84865cff8 CR3: 0000000036f54000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 queue_work_on+0x106/0x1d0 kernel/workqueue.c:2444
 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: 0033:0x7ff84a3ed68e
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:00007ff84865cfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff84865d6c0 RCX: 00007ff84a3ed68e
RDX: 0000000000000022 RSI: 0000200000000040 RDI: 00000000000000ca
RBP: 00007ff84a4c2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff84a6a6128 R14: 00007ff84a6a6090 R15: 00007ffef854d9a8
 </TASK>
----------------
Code disassembly (best guess):
   0:	81 c7 68 01 00 00    	add    $0x168,%edi
   6:	4c 8d 35 39 04 01 0e 	lea    0xe010439(%rip),%r14        # 0xe010446
   d:	48 89 f8             	mov    %rdi,%rax
  10:	48 c1 e8 03          	shr    $0x3,%rax
  14:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  19:	74 05                	je     0x20
  1b:	e8 56 f0 a1 00       	call   0xa1f076
  20:	49 8b 75 18          	mov    0x18(%r13),%rsi
  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:	4c 89 e8             	mov    %r13,%rax
  32:	48 c1 e8 03          	shr    $0x3,%rax
  36:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  3b:	74 08                	je     0x45
  3d:	4c 89 ef             	mov    %r13,%rdi