syzbot

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workqueue: cannot queue hci_tx_work on wq hci2
WARNING: kernel/workqueue.c:2298 at __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296, CPU#0: kbnepd 
/10362
Modules linked in:
CPU: 0 UID: 0 PID: 10362 Comm: kbnepd 
 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296
lr : __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296
sp : ffff8000971a7560
x29: ffff8000971a75a0 x28: ffff0000ed3e98c0 x27: ffff0000ed3e9990
x26: ffff0000ca68f800 x25: 0000000000000008 x24: ffff0000ca68f9c0
x23: dfff800000000000 x22: ffff0000d8bb002c x21: 0000000000208040
x20: ffff800089f06000 x19: ffff0000ce2d0c50 x18: 1fffe00035c20e20
x17: ffff8000888db000 x16: ffff80008898cfc0 x15: ffff0001ae10710c
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000001c1f x10: 0000000000ff0100 x9 : 2106f328601d6d00
x8 : 2106f328601d6d00 x7 : ffff8000804886d0 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f13b0
x2 : 0000000100000000 x1 : ffff0000d8bb0000 x0 : 0000000000000000
Call trace:
 __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296 (P)
 queue_work_on+0xc0/0x130 kernel/workqueue.c:2432
 queue_work include/linux/workqueue.h:696 [inline]
 hci_send_acl+0x4a4/0x7c4 net/bluetooth/hci_core.c:3283
 l2cap_do_send+0x18c/0x2b4 net/bluetooth/l2cap_core.c:1019
 l2cap_chan_send+0x108c/0x1dc4 net/bluetooth/l2cap_core.c:-1
 l2cap_sock_sendmsg+0x284/0x428 net/bluetooth/l2cap_sock.c:1164
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg+0xc8/0x138 net/socket.c:802
 sock_sendmsg+0x154/0x228 net/socket.c:825
 kernel_sendmsg+0x54/0x6c net/socket.c:849
 bnep_tx_frame net/bluetooth/bnep/core.c:466 [inline]
 bnep_session+0x1ce0/0x2298 net/bluetooth/bnep/core.c:509
 kthread+0x2f0/0x3c0 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
irq event stamp: 284
hardirqs last  enabled at (283): [<ffff8000803bd554>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline]
hardirqs last  enabled at (283): [<ffff8000803bd554>] finish_lock_switch+0x160/0x204 kernel/sched/core.c:5124
hardirqs last disabled at (284): [<ffff80008034c854>] queue_work_on+0x4c/0x130 kernel/workqueue.c:2428
softirqs last  enabled at (236): [<ffff800084ab928c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (232): [<ffff800084ab9258>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---