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workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: kernel/workqueue.c:2251 at 0x0, CPU#2: syz.8.12064/16869
Modules linked in:
CPU: 2 UID: 0 PID: 16869 Comm: syz.8.12064 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 03 69 07 0f 48 8b 75 18 <67> 48 0f b9 3a e9 90 f7 ff ff e8 10 11 3a 00 90 0f 0b 90 e9 15 f6
RSP: 0018:ffffc90000538be8 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff1100ad16951
RDX: ffff888020e23178 RSI: ffffffff8a682630 RDI: ffffffff908b9dd0
RBP: ffff8880568b4a70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: ffff8880538c54b0 R12: 1ffff920000a718f
R13: ffffffff81844610 R14: 0000000000000101 R15: ffff888020e23000
FS: 0000000000000000(0000) GS:ffff888097904000(0063) knlGS:00000000f545db40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f549bda4 CR3: 000000006fbcf000 CR4: 0000000000352ef0
DR0: 0000000000000001 DR1: 0000000000000005 DR2: 8000000000000001
DR3: 0000000000000007 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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+0x219/0x950 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:preempt_schedule_irq+0x4c/0x90 kernel/sched/core.c:7190
Code: df 55 65 48 8b 2d 0c da 3b 08 53 48 89 eb 48 c1 eb 03 48 01 c3 bf 01 00 00 00 e8 ff 49 14 f6 e8 4a 81 50 f6 fb bf 01 00 00 00 3f 96 ff ff 9c 58 fa f6 c4 02 75 1e bf 01 00 00 00 e8 ad db 13
RSP: 0018:ffffc90006616f78 EFLAGS: 00000202
RAX: 000000000000172f RBX: ffffed100a718930 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff8dac8060 RDI: 0000000000000001
RBP: ffff8880538c4980 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff9088acd7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0xe9/0x140 kernel/locking/lockdep.c:6616
Code: 48 89 ef e8 89 ee ff ff 48 83 2d 69 9b 38 14 01 89 c3 e8 0a ef ff ff 9c 58 f6 c4 02 75 52 41 f7 c4 00 02 00 00 74 01 fb 84 db <75> 1b 5b 5d 41 5c e9 ac ac 0a 00 8b 05 2a de ef 0e 31 db 85 c0 74
RSP: 0018:ffffc90006617080 EFLAGS: 00000246
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dbb8575 RDI: ffffffff8bf2a700
RBP: ffffffff97389b48 R08: 000000000003fcb2 R09: ffffffff95d99444
R10: 0000000000000002 R11: ffff8880538c54b0 R12: 0000000000000246
R13: ffff888026718000 R14: ffff8880267184c8 R15: 0000000000000010
__qdisc_destroy+0x11a/0x4a0 net/sched/sch_generic.c:1079
qdisc_put+0xab/0xe0 net/sched/sch_generic.c:1105
shutdown_scheduler_queue+0xa5/0x160 net/sched/sch_generic.c:1158
netdev_for_each_tx_queue include/linux/netdevice.h:2680 [inline]
dev_shutdown+0xb8/0x430 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0xb37/0x2590 net/core/dev.c:12369
rtnl_delete_link net/core/rtnetlink.c:3528 [inline]
rtnl_dellink+0x45f/0xad0 net/core/rtnetlink.c:3570
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6958
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592
___sys_sendmsg+0x134/0x1d0 net/socket.c:2646
__sys_sendmsg+0x16d/0x220 net/socket.c:2678
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0xe8/0x680 arch/x86/entry/syscall_32.c:307
do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:332
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf706d579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f545d55c EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000600
RDX: 00000000040cc040 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
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 03 69 07 0f lea 0xf076903(%rip),%rdi # 0xf076929
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 10 11 3a 00 call 0x3a1149
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: 15 .byte 0x15
3f: f6 .byte 0xf6