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workqueue: cannot queue hci_cmd_timeout on wq hci4
WARNING: kernel/workqueue.c:2270 at __queue_work+0xd08/0x1150 kernel/workqueue.c:2269, CPU#0: syz.6.1684/12863
Modules linked in:
CPU: 0 UID: 0 PID: 12863 Comm: syz.6.1684 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [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 98 b4 0c 0f 48 8b 75 18 <67> 48 0f b9 3a e9 2a f7 ff ff e8 a5 e2 38 00 90 0f 0b 90 e9 b2 f5
RSP: 0018:ffffc90000007be8 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff1100522b951
RDX: ffff888073db6178 RSI: ffffffff8a8398d0 RDI: ffffffff90dc84e0
RBP: ffff88802915ca70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff888073db6000
R13: 1ffff92000000f8f R14: ffffffff81cfe160 R15: 0000000000000001
FS: 00007f9290d7b6c0(0000) GS:ffff888124345000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f928ffe9e80 CR3: 000000005d02c000 CR4: 00000000003526f0
DR0: 0000000000000009 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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:preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7235
Code: 00 00 00 fc ff df 48 89 eb 48 c1 eb 03 48 01 d3 f6 c4 02 75 47 bf 01 00 00 00 e8 90 9b 44 f6 e8 0b 98 7f f6 fb bf 01 00 00 00 e0 96 ff ff 9c 58 fa f6 c4 02 75 1e bf 01 00 00 00 e8 ae 39 44
RSP: 0018:ffffc90006687548 EFLAGS: 00000206
RAX: 0000000000001571 RBX: ffffed100eda2000 RCX: 0000000000000040
RDX: 0000000000000000 RSI: ffffffff8de72ef9 RDI: 0000000000000001
RBP: ffff888076d10000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_one_record+0xac3/0xe50 kernel/printk/printk.c:3270
Code: 00 e8 51 35 29 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 4f 32 21 00 48 85 ed 0f 85 d7 01 00 00 e8 61 37 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:ffffc90006687640 EFLAGS: 00000246
RAX: ffffffff8f512bf8 RBX: ffffffff8f512ba0 RCX: ffffc90011e19000
RDX: 0000000000080000 RSI: ffffffff81e77b9f RDI: ffff888076d10000
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000018c8
R13: ffffffff8f512bf8 R14: ffffc900066876c0 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
class_console_lock_destructor include/linux/console.h:736 [inline]
do_con_write+0x7a8/0x8540 drivers/tty/vt/vt.c:3187
con_put_char+0x73/0xa0 drivers/tty/vt/vt.c:3566
tty_put_char+0xbe/0x160 drivers/tty/tty_io.c:3153
do_output_char+0x155/0x850 drivers/tty/n_tty.c:459
process_output drivers/tty/n_tty.c:482 [inline]
n_tty_write+0x528/0x12d0 drivers/tty/n_tty.c:2377
iterate_tty_write drivers/tty/tty_io.c:1006 [inline]
file_tty_write.isra.0+0x4d2/0x890 drivers/tty/tty_io.c:1081
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f928ff9c799
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:00007f9290d7b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9290215fa0 RCX: 00007f928ff9c799
RDX: 0000000000001006 RSI: 0000200000001040 RDI: 0000000000000009
RBP: 00007f9290032bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9290216038 R14: 00007f9290215fa0 R15: 00007ffe481d1908
----------------
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 98 b4 0c 0f lea 0xf0cb498(%rip),%rdi # 0xf0cb4be
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 a5 e2 38 00 call 0x38e2de
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: b2 f5 mov $0xf5,%dl