================================
WARNING: inconsistent lock state
4.19.190-syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
000000007b8d473f (slock-AF_BLUETOOTH-BTPROTO_SCO){+.?.}, at: spin_lock include/linux/spinlock.h:329 [inline]
000000007b8d473f (slock-AF_BLUETOOTH-BTPROTO_SCO){+.?.}, at: sco_sock_timeout+0x31/0x210 net/bluetooth/sco.c:82
{SOFTIRQ-ON-W} state was registered at:
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
sco_conn_del+0xe2/0x240 net/bluetooth/sco.c:175
sco_disconn_cfm+0x74/0xb0 net/bluetooth/sco.c:1133
hci_disconn_cfm include/net/bluetooth/hci_core.h:1261 [inline]
hci_conn_hash_flush+0x127/0x260 net/bluetooth/hci_conn.c:1512
hci_dev_do_close+0x659/0xf10 net/bluetooth/hci_core.c:1668
hci_unregister_dev+0x18b/0x910 net/bluetooth/hci_core.c:3273
vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:354
__fput+0x2ce/0x890 fs/file_table.c:278
task_work_run+0x148/0x1c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0xbf3/0x2be0 kernel/exit.c:870
do_group_exit+0x125/0x310 kernel/exit.c:967
__do_sys_exit_group kernel/exit.c:978 [inline]
__se_sys_exit_group kernel/exit.c:976 [inline]
__x64_sys_exit_group+0x3a/0x50 kernel/exit.c:976
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
irq event stamp: 6689188
hardirqs last enabled at (6689188): [<ffffffff8817faa4>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
hardirqs last enabled at (6689188): [<ffffffff8817faa4>] _raw_spin_unlock_irq+0x24/0x80 kernel/locking/spinlock.c:192
hardirqs last disabled at (6689187): [<ffffffff8817f735>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline]
hardirqs last disabled at (6689187): [<ffffffff8817f735>] _raw_spin_lock_irq+0x35/0x80 kernel/locking/spinlock.c:160
softirqs last enabled at (6689180): [<ffffffff813924ad>] irq_enter+0xbd/0xd0 kernel/softirq.c:354
softirqs last disabled at (6689181): [<ffffffff813926d5>] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (6689181): [<ffffffff813926d5>] irq_exit+0x215/0x260 kernel/softirq.c:412
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
<Interrupt>
lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
*** DEADLOCK ***
1 lock held by swapper/0/0:
#0: 00000000068510bc ((&sk->sk_timer)#3){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:168 [inline]
#0: 00000000068510bc ((&sk->sk_timer)#3){+.-.}, at: call_timer_fn+0xc9/0x700 kernel/time/timer.c:1328
stack backtrace:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.190-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
print_usage_bug.cold+0x42e/0x570 kernel/locking/lockdep.c:2545
valid_state kernel/locking/lockdep.c:2558 [inline]
mark_lock_irq kernel/locking/lockdep.c:2752 [inline]
mark_lock+0xc70/0x1160 kernel/locking/lockdep.c:3132
mark_irqflags kernel/locking/lockdep.c:3010 [inline]
__lock_acquire+0xdc4/0x3ff0 kernel/locking/lockdep.c:3373
lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
sco_sock_timeout+0x31/0x210 net/bluetooth/sco.c:82
call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1696 [inline]
run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:535 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 48 89 df e8 64 37 80 f9 e9 2e ff ff ff 48 89 df e8 57 37 80 f9 eb 82 90 90 90 90 90 e9 07 00 00 00 0f 00 2d e4 99 4f 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d d4 99 4f 00 f4 c3 90 90 41 56 41 55
RSP: 0018:ffffffff89e07d40 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e304c RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff89e78904
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89f18250
R13: 1ffffffff13c0fb2 R14: 0000000000000000 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0x49/0x310 arch/x86/kernel/process.c:557
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x2ec/0x4b0 kernel/sched/idle.c:263
cpu_startup_entry+0xc5/0xe0 kernel/sched/idle.c:369
start_kernel+0x8d6/0x911 init/main.c:736
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22