------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2274 at __queue_work+0xd53/0x1020 kernel/workqueue.c:2272, CPU#0: syz.0.230/6947
Modules linked in:
CPU: 0 UID: 0 PID: 6947 Comm: syz.0.230 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
RIP: 0010:__queue_work+0xd7e/0x1020 kernel/workqueue.c:2272
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 c3 c2 a1 00 49 8b 75 00 49 81 c7 78 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc
RSP: 0018:ffffc90000007bf0 EFLAGS: 00010086
RAX: 1ffff1100f8ed151 RBX: 0000000000000008 RCX: ffff88803314bd00
RDX: ffff888048ccb978 RSI: ffffffff8aa466b0 RDI: ffffffff90154a00
RBP: 0000000000000100 R08: ffffffff901250f7 R09: 1ffffffff2024a1e
R10: dffffc0000000000 R11: ffffffff818e4600 R12: dffffc0000000000
R13: ffff88807c768a88 R14: ffffffff90154a00 R15: ffff888048ccb978
FS:  00007f51593f66c0(0000) GS:ffff88812543d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc16da720c0 CR3: 0000000022fb8000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 call_timer_fn+0x192/0x640 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
 handle_softirqs+0x22a/0x870 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x220 kernel/softirq.c:739
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:756
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:preempt_schedule_irq+0x48/0xa0 kernel/sched/core.c:7292
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 93 16 e0 f5 e8 8e 08 1a f6 fb bf 01 00 00 00 <e8> 03 a4 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 64 0a 1a f6 bf 01
RSP: 0018:ffffc90005bee770 EFLAGS: 00000206
RAX: 0000000000004d33 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8df14eff RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff901250f7 R09: 1ffffffff2024a1e
R10: dffffc0000000000 R11: fffffbfff2024a1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x5e4/0x700 kernel/entry/common.c:240
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
RIP: 0010:kernfs_root+0xf1/0x230 fs/kernfs/kernfs-internal.h:75
Code: 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 56 1f c1 ff 4d 8b 3f e8 de a5 44 09 89 c5 31 ff 89 c6 e8 f3 c4 57 ff 85 ed 74 1b <e8> ba f2 3b ff 89 c5 31 ff 89 c6 e8 df c4 57 ff 85 ed 74 7f e8 96
RSP: 0018:ffffc90005bee890 EFLAGS: 00000202
RAX: ffffffff826ee2fd RBX: ffffffff826ee22c RCX: 0000000000000002
RDX: ffff88803314bd00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff826ee22c R09: ffffffff8e75f420
R10: dffffc0000000000 R11: ffffed100f34aba5 R12: dffffc0000000000
R13: ffff88801c2b5118 R14: ffff888079a55d20 R15: ffff888079a55870
 kernfs_next_descendant_post+0x83/0x310 fs/kernfs/dir.c:1385
 kernfs_activate fs/kernfs/dir.c:1440 [inline]
 kernfs_add_one+0x452/0x5c0 fs/kernfs/dir.c:846
 __kernfs_create_file+0x22b/0x2e0 fs/kernfs/file.c:1086
 sysfs_add_file_mode_ns+0x238/0x300 fs/sysfs/file.c:313
 create_files fs/sysfs/group.c:82 [inline]
 internal_create_group+0x673/0x1180 fs/sysfs/group.c:189
 internal_create_groups fs/sysfs/group.c:229 [inline]
 sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:255
 rx_queue_add_kobject net/core/net-sysfs.c:1251 [inline]
 net_rx_queue_update_kobjects+0x294/0x750 net/core/net-sysfs.c:1307
 register_queue_kobjects net/core/net-sysfs.c:2099 [inline]
 netdev_register_kobject+0x21f/0x310 net/core/net-sysfs.c:2347
 register_netdevice+0x12c0/0x1cf0 net/core/dev.c:11440
 gtp_newlink+0xa77/0x1780 drivers/net/gtp.c:1528
 rtnl_newlink_create+0x329/0xb70 net/core/rtnetlink.c:3840
 __rtnl_newlink net/core/rtnetlink.c:3957 [inline]
 rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4072
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec+0x112/0x150 net/socket.c:796
 __sock_sendmsg net/socket.c:811 [inline]
 ____sys_sendmsg+0x589/0x8c0 net/socket.c:2668
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2722
 __sys_sendmsg net/socket.c:2754 [inline]
 __do_sys_sendmsg net/socket.c:2759 [inline]
 __se_sys_sendmsg net/socket.c:2757 [inline]
 __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2757
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f515b19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f51593f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f515b416180 RCX: 00007f515b19c799
RDX: 0000000000048010 RSI: 0000200000000280 RDI: 0000000000000005
RBP: 00007f515b232c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f515b416218 R14: 00007f515b416180 R15: 00007ffc6b5da5b8
 </TASK>
----------------
Code disassembly (best guess):
   0:	83 c5 18             	add    $0x18,%ebp
   3:	4c 89 e8             	mov    %r13,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   f:	74 08                	je     0x19
  11:	4c 89 ef             	mov    %r13,%rdi
  14:	e8 c3 c2 a1 00       	call   0xa1c2dc
  19:	49 8b 75 00          	mov    0x0(%r13),%rsi
  1d:	49 81 c7 78 01 00 00 	add    $0x178,%r15
  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:	48 83 c4 58          	add    $0x58,%rsp
  33:	5b                   	pop    %rbx
  34:	41 5c                	pop    %r12
  36:	41 5d                	pop    %r13
  38:	41 5e                	pop    %r14
  3a:	41 5f                	pop    %r15
  3c:	5d                   	pop    %rbp
  3d:	c3                   	ret
  3e:	cc                   	int3
  3f:	cc                   	int3