------------[ cut here ]------------
workqueue: cannot queue hci_devcd_timeout on wq hci0
WARNING: kernel/workqueue.c:2270 at __queue_work+0xd08/0x1150 kernel/workqueue.c:2269, CPU#0: syz.0.1270/12129
Modules linked in:
CPU: 0 UID: 0 PID: 12129 Comm: syz.0.1270 Tainted: G U L syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__queue_work+0xd0c/0x1150 kernel/workqueue.c:2269
Code: 00 00 00 fc ff df 49 8d 94 24 78 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 04 04 00 00 48 8d 3d d8 5c 0d 0f 48 8b 75 18 <67> 48 0f b9 3a e9 2a f7 ff ff e8 95 a6 38 00 90 0f 0b 90 e9 b2 f5
RSP: 0018:ffffc90000007be8 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff11006694286
RDX: ffff88807e95a978 RSI: ffffffff8a961f40 RDI: ffffffff90dcb0d0
RBP: ffff8880334a1418 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000001 R12: ffff88807e95a800
R13: 1ffff92000000f8f R14: ffffffff81cf6510 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff88812434c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05cab4da08 CR3: 0000000059564000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x19a/0x670 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers+0x570/0xb30 kernel/time/timer.c:2373
__run_timer_base kernel/time/timer.c:2385 [inline]
__run_timer_base kernel/time/timer.c:2377 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2394
run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2404
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_flush_one_record+0xac3/0xe50 kernel/printk/printk.c:3270
Code: 00 e8 81 18 29 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 2f 16 21 00 48 85 ed 0f 85 d7 01 00 00 e8 41 1b 21 00 fb 4c 89 e8 <48> c1 e8 03 42 80 3c 38 00 0f 85 64 03 00 00 48 8b 0c 24 48 8b 6b
RSP: 0018:ffffc90004a4f238 EFLAGS: 00000293
RAX: ffffffff8f5158b8 RBX: ffffffff8f515860 RCX: ffffffff81e6df51
RDX: ffff888026c3bc80 RSI: ffffffff81e6df5f RDI: ffff888026c3bc80
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000153e
R13: ffffffff8f5158b8 R14: ffffc90004a4f2b8 R15: dffffc0000000000
console_flush_all kernel/printk/printk.c:3343 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3413
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479
__warn_printf lib/bug.c:190 [inline]
__report_bug.cold+0x7b/0x137 lib/bug.c:244
report_bug_entry+0xe1/0x290 lib/bug.c:269
handle_bug+0x1c9/0x2a0 arch/x86/kernel/traps.c:430
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:489
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RIP: 0010:debug_print_object+0x19b/0x2a0 lib/debugobjects.c:612
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d 62 be e8 0b 41 56 48 8b 14 dd e0 05 1b 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 4c 61 de 0b 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90004a4f708 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff8c1b0520 RSI: ffffffff8c1b0140 RDI: ffffffff90e440f0
RBP: 0000000000000001 R08: ffff8880334a1460 R09: ffffffff8bb2b800
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c1b0140
R13: ffffffff8bb2b840 R14: ffffffff8a961f40 R15: ffffc90004a4f808
__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1129
__free_pages_prepare mm/page_alloc.c:1440 [inline]
__free_frozen_pages+0x392/0x10d0 mm/page_alloc.c:2978
hci_release_dev+0x4ef/0x630 net/bluetooth/hci_core.c:2777
bt_host_release+0x6a/0xb0 net/bluetooth/hci_sysfs.c:87
device_release+0xa4/0x240 drivers/base/core.c:2565
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
put_device+0x1f/0x30 drivers/base/core.c:3797
vhci_release+0x185/0x230 drivers/bluetooth/hci_vhci.c:691
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x829/0x2aa0 kernel/exit.c:971
do_group_exit+0xd5/0x2a0 kernel/exit.c:1112
get_signal+0x1ec7/0x21e0 kernel/signal.c:3034
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop+0x86/0x4a0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x668/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f934d55cfce
Code: Unable to access opcode bytes at 0x7f934d55cfa4.
RSP: 002b:00007f934e3d7f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f934e3d86c0 RCX: 00007f934d55cfce
RDX: 00007f934e3d7fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f934d632bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f934d816038 R14: 00007f934d815fa0 R15: 00007ffdad62f238
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 fc add %bh,%ah
4: ff lcall (bad)
5: df 49 8d fisttps -0x73(%rcx)
8: 94 xchg %eax,%esp
9: 24 78 and $0x78,%al
b: 01 00 add %eax,(%rax)
d: 00 48 89 add %cl,-0x77(%rax)
10: f9 stc
11: 48 c1 e9 03 shr $0x3,%rcx
15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
19: 0f 85 04 04 00 00 jne 0x423
1f: 48 8d 3d d8 5c 0d 0f lea 0xf0d5cd8(%rip),%rdi # 0xf0d5cfe
26: 48 8b 75 18 mov 0x18(%rbp),%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 2a f7 ff ff jmp 0xfffff75e
34: e8 95 a6 38 00 call 0x38a6ce
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: b2 f5 mov $0xf5,%dl