EXT4-fs (loop7): VFS: Can't find ext4 filesystem
ieee802154 phy1 wpan1: encryption failed: -22
device veth0_vlan entered promiscuous mode
ieee802154 phy1 wpan1: encryption failed: -22
================================
WARNING: inconsistent lock state
5.10.60 #1 Not tainted
--------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
syz-executor.6/10406 [HC0[0]:SC0[0]:HE1:SE1] takes:
ffff88804345f0a0 (slock-AF_BLUETOOTH-BTPROTO_SCO){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffff88804345f0a0 (slock-AF_BLUETOOTH-BTPROTO_SCO){+.?.}-{2:2}, at: sco_conn_del+0x128/0x270 net/bluetooth/sco.c:176
{IN-SOFTIRQ-W} state was registered at:
  lock_acquire kernel/locking/lockdep.c:5560 [inline]
  lock_acquire+0x197/0x490 kernel/locking/lockdep.c:5525
  __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
  _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151
  spin_lock include/linux/spinlock.h:354 [inline]
  sco_sock_timeout+0x24/0x150 net/bluetooth/sco.c:83
  call_timer_fn+0x182/0x580 kernel/time/timer.c:1414
  expire_timers kernel/time/timer.c:1459 [inline]
  __run_timers.part.0+0x666/0x9d0 kernel/time/timer.c:1750
  __run_timers kernel/time/timer.c:1731 [inline]
  run_timer_softirq+0x80/0x120 kernel/time/timer.c:1763
  __do_softirq+0x1b6/0x86a kernel/softirq.c:298
  asm_call_irq_on_stack+0x12/0x20
  __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
  run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
  do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77
  invoke_softirq kernel/softirq.c:393 [inline]
  __irq_exit_rcu kernel/softirq.c:423 [inline]
  irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:435
  sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095
  asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
  native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
  arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
  default_idle+0xe/0x10 arch/x86/kernel/process.c:688
  default_idle_call+0x87/0xd0 kernel/sched/idle.c:112
  cpuidle_idle_call kernel/sched/idle.c:194 [inline]
  do_idle+0x3a5/0x510 kernel/sched/idle.c:300
  cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:396
  start_kernel+0x475/0x496 init/main.c:1057
  secondary_startup_64_no_verify+0xc2/0xcb
irq event stamp: 11077
hardirqs last  enabled at (11077): [<ffffffff816a5457>] quarantine_put+0x87/0x190 mm/kasan/quarantine.c:217
hardirqs last disabled at (11076): [<ffffffff816a5450>] quarantine_put+0x80/0x190 mm/kasan/quarantine.c:190
softirqs last  enabled at (9618): [<ffffffff83e00f92>] asm_call_irq_on_stack+0x12/0x20
softirqs last disabled at (9609): [<ffffffff83e00f92>] asm_call_irq_on_stack+0x12/0x20

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 ***

4 locks held by syz-executor.6/10406:
 #0: ffffffff85418888 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0xfe/0x4b0 net/rfkill/core.c:1232
 #1: ffff88800e850f40 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0xee/0x1240 net/bluetooth/hci_core.c:1727
 #2: ffff88800e850078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x23f/0x1240 net/bluetooth/hci_core.c:1764
 #3: ffffffff85366d28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1440 [inline]
 #3: ffffffff85366d28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc7/0x230 net/bluetooth/hci_conn.c:1557

stack backtrace:
CPU: 0 PID: 10406 Comm: syz-executor.6 Not tainted 5.10.60 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 print_usage_bug kernel/locking/lockdep.c:3857 [inline]
 valid_state kernel/locking/lockdep.c:3869 [inline]
 mark_lock_irq kernel/locking/lockdep.c:4072 [inline]
 mark_lock.cold+0x19/0x159 kernel/locking/lockdep.c:4529
 mark_usage kernel/locking/lockdep.c:4442 [inline]
 __lock_acquire+0x8cf/0x5b60 kernel/locking/lockdep.c:4904
 lock_acquire kernel/locking/lockdep.c:5560 [inline]
 lock_acquire+0x197/0x490 kernel/locking/lockdep.c:5525
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 sco_conn_del+0x128/0x270 net/bluetooth/sco.c:176
 sco_disconn_cfm net/bluetooth/sco.c:1189 [inline]
 sco_disconn_cfm+0x62/0x80 net/bluetooth/sco.c:1182
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1443 [inline]
 hci_conn_hash_flush+0x119/0x230 net/bluetooth/hci_conn.c:1557
 hci_dev_do_close+0x717/0x1240 net/bluetooth/hci_core.c:1777
 hci_rfkill_set_block+0x154/0x190 net/bluetooth/hci_core.c:2216
 rfkill_set_block+0x20f/0x560 net/rfkill/core.c:341
 rfkill_fop_write+0x252/0x4b0 net/rfkill/core.c:1240
 vfs_write+0x295/0xa50 fs/read_write.c:603
 ksys_write+0x1ee/0x250 fs/read_write.c:658
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466609
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5d8857e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000000000056 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff88d1cf0f R14: 00007f5d8857e300 R15: 0000000000022000