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WARNING: CPU: 1 PID: 3375 at kernel/workqueue.c:1386 __queue_work+0xaaa/0xf70 kernel/workqueue.c:1386
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3375 Comm: syz-executor.2 Not tainted 4.14.281-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:__queue_work+0xaaa/0xf70 kernel/workqueue.c:1386
RSP: 0018:ffff888096817ab8 EFLAGS: 00010097
RAX: ffff8880a97da1c0 RBX: ffff8880a97da1c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880a1a52000 RDI: ffff8880a97da1e4
RBP: 0000000000000008 R08: ffffffff8b9dcae0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888080a0a4c0
R13: ffff888080a0a4c0 R14: 0000000000000000 R15: ffff8880a1a52000
 queue_work_on+0x159/0x1d0 kernel/workqueue.c:1491
 queue_work include/linux/workqueue.h:491 [inline]
 hci_sock_sendmsg+0x106b/0x1d00 net/bluetooth/hci_sock.c:1814
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 sock_write_iter+0x22c/0x370 net/socket.c:925
 call_write_iter include/linux/fs.h:1780 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fbb499ef109
RSP: 002b:00007fbb48343168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbb49b02030 RCX: 00007fbb499ef109
RDX: 000000000000002a RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fbb49a4908d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe454ecaf R14: 00007fbb48343300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..