------------[ cut here ]------------ workqueue: cannot queue hci_tx_work on wq hci0 WARNING: kernel/workqueue.c:2258 at __queue_work+0xd38/0xfb0 kernel/workqueue.c:2256, CPU#1: syz.9.5103/22086 Modules linked in: CPU: 1 UID: 0 PID: 22086 Comm: syz.9.5103 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__queue_work+0xd38/0xfb0 kernel/workqueue.c:2256 Code: 42 80 3c 20 00 74 08 4c 89 ef e8 33 d5 9b 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 a0 eb 69 8b 4c 89 fa e8 b9 31 f9 ff 90 <0f> 0b 90 90 e9 1a f5 ff ff e8 fa 15 36 00 90 0f 0b 90 e9 dd fc ff RSP: 0018:ffffc9000deaf490 EFLAGS: 00010046 RAX: c46250018a582c00 RBX: 0000000000000000 RCX: ffff888026bf3c80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff1100fa4f838 R08: ffff8880b8724293 R09: 1ffff110170e4852 R10: dffffc0000000000 R11: ffffed10170e4853 R12: dffffc0000000000 R13: ffff888027cdcb70 R14: ffff888026bf3c80 R15: ffff88807d27c178 FS: 00007f2cf8b556c0(0000) GS:ffff888125e22000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000040 CR3: 000000006682e000 CR4: 00000000003526f0 Call Trace: queue_work_on+0x181/0x270 kernel/workqueue.c:2392 l2cap_chan_send+0x1110/0x2790 net/bluetooth/l2cap_core.c:-1 l2cap_sock_sendmsg+0x32e/0x4a0 net/bluetooth/l2cap_sock.c:1139 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x52d/0x830 net/socket.c:2630 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684 __sys_sendmmsg+0x227/0x430 net/socket.c:2773 __do_sys_sendmmsg net/socket.c:2800 [inline] __se_sys_sendmmsg net/socket.c:2797 [inline] __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2797 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2cf7d8eec9 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:00007f2cf8b55038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f2cf7fe6090 RCX: 00007f2cf7d8eec9 RDX: 0000000000000002 RSI: 00002000000008c0 RDI: 0000000000000005 RBP: 00007f2cf7e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000044000844 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2cf7fe6128 R14: 00007f2cf7fe6090 R15: 00007ffec3bd75f8