------------[ cut here ]------------ workqueue: cannot queue hci_tx_work on wq hci0 WARNING: CPU: 0 PID: 18997 at kernel/workqueue.c:2255 __queue_work+0xd03/0x1160 kernel/workqueue.c:2254 Modules linked in: CPU: 0 UID: 0 PID: 18997 Comm: syz.1.3296 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__queue_work+0xd03/0x1160 kernel/workqueue.c:2254 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 4b 04 00 00 48 8b 75 18 4c 89 fa 48 c7 c7 a0 03 ac 8b e8 be 1e f7 ff 90 <0f> 0b 90 90 e9 2f f7 ff ff e8 8f 7b 38 00 90 0f 0b 90 e9 b4 f5 ff RSP: 0018:ffffc90004a97710 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90020733000 RDX: 0000000000080000 RSI: ffffffff817a4395 RDI: 0000000000000001 RBP: ffff88805dd4cb50 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: fffffffffffce858 R12: 0000000000000008 R13: ffff88807f0db000 R14: 0000000000000000 R15: ffff88807f0db178 FS: 00007f7326cdc6c0(0000) GS:ffff8881246b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000003940 CR3: 0000000050120000 CR4: 00000000003526f0 Call Trace: queue_work_on+0x1a4/0x1f0 kernel/workqueue.c:2390 l2cap_chan_send+0xce5/0x2c50 net/bluetooth/l2cap_core.c:2610 l2cap_sock_sendmsg+0x3c7/0x490 net/bluetooth/l2cap_sock.c:1139 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg net/socket.c:729 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2614 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2668 __sys_sendmmsg+0x200/0x420 net/socket.c:2757 __do_sys_sendmmsg net/socket.c:2784 [inline] __se_sys_sendmmsg net/socket.c:2781 [inline] __x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2781 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7325d8eba9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7326cdc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f7325fd6090 RCX: 00007f7325d8eba9 RDX: 000000000000ff80 RSI: 0000200000003940 RDI: 0000000000000006 RBP: 00007f7325e11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000024004810 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7325fd6128 R14: 00007f7325fd6090 R15: 00007ffc32846ad8