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workqueue: cannot queue hci_cmd_timeout on wq hci5
WARNING: kernel/workqueue.c:2251 at 0x0, CPU#0: syz.7.3115/16815
Modules linked in:
CPU: 0 UID: 0 PID: 16815 Comm: syz.7.3115 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__queue_work+0xca1/0x10e0 kernel/workqueue.c:2250
Code: 78 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 0c 04 00 00 48 8d 3d c3 c4 05 0f 48 8b 75 18 <67> 48 0f b9 3a e9 90 f7 ff ff e8 a0 df 39 00 90 0f 0b 90 e9 15 f6
RSP: 0018:ffffc90000007be8 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff110081f9951
RDX: ffff888045a06978 RSI: ffffffff8a5b78c0 RDI: ffffffff908a0b50
RBP: ffff888040fcca70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 00000000ffffffff R12: 1ffff92000000f8f
R13: ffffffff818457d0 R14: 0000000000000100 R15: ffff888045a06800
FS: 0000000000000000(0000) GS:ffff8880d6960000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f82bb575440 CR3: 000000004604b000 CR4: 0000000000352ef0
Call Trace:
call_timer_fn+0x19a/0x5a0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers+0x569/0xae0 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/0x40 kernel/time/timer.c:2404
handle_softirqs+0x219/0x8b0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x109/0x170 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+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x62/0x330 kernel/locking/lockdep.c:5872
Code: 8f 12 12 83 f8 07 0f 87 a2 02 00 00 89 c0 48 0f a3 05 e2 ac ed 0e 0f 82 74 02 00 00 8b 35 5a dd ed 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 f9 8e 12 12 0f 85 ad 02 00 00 48 83 c4
RSP: 0018:ffffc90006737420 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3c92c0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8da973d4 RDI: ffffffff8bf21180
RBP: 0000000000000002 R08: 000000004d28d54e R09: 000000006e69535f
R10: ffff8880380e0b30 R11: 00000000f6e69535 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
__unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x73/0x100 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:559
__call_rcu_common.constprop.0+0xa5/0xa10 kernel/rcu/tree.c:3119
slab_free_hook mm/slub.c:2504 [inline]
slab_free mm/slub.c:6663 [inline]
kmem_cache_free+0x171/0x770 mm/slub.c:6774
exit_mmap+0x50a/0xb60 mm/mmap.c:1305
__mmput+0x12a/0x410 kernel/fork.c:1130
mmput+0x62/0x70 kernel/fork.c:1153
exit_mm kernel/exit.c:583 [inline]
do_exit+0x7d7/0x2bd0 kernel/exit.c:961
do_group_exit+0xd3/0x2a0 kernel/exit.c:1114
get_signal+0x2671/0x26d0 kernel/signal.c:3034
arch_do_signal_or_restart+0x8f/0x7e0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75
__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_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f82bb58f7c9
Code: Unable to access opcode bytes at 0x7f82bb58f79f.
RSP: 002b:00007f82bc3a30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f82bb7e5fa8 RCX: 00007f82bb58f7c9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f82bb7e5fa8
RBP: 00007f82bb7e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f82bb7e6038 R14: 00007ffc8c28abc0 R15: 00007ffc8c28aca8
----------------
Code disassembly (best guess):
0: 78 01 js 0x3
2: 00 00 add %al,(%rax)
4: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
b: fc ff df
e: 48 89 f9 mov %rdi,%rcx
11: 48 c1 e9 03 shr $0x3,%rcx
15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
19: 0f 85 0c 04 00 00 jne 0x42b
1f: 48 8d 3d c3 c4 05 0f lea 0xf05c4c3(%rip),%rdi # 0xf05c4e9
26: 48 8b 75 18 mov 0x18(%rbp),%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 90 f7 ff ff jmp 0xfffff7c4
34: e8 a0 df 39 00 call 0x39dfd9
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: 15 .byte 0x15
3f: f6 .byte 0xf6