------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 1 PID: 8519 at kernel/locking/lockdep.c:202 hlock_class kernel/locking/lockdep.c:202 [inline]
WARNING: CPU: 1 PID: 8519 at kernel/locking/lockdep.c:202 hlock_class kernel/locking/lockdep.c:191 [inline]
WARNING: CPU: 1 PID: 8519 at kernel/locking/lockdep.c:202 check_wait_context kernel/locking/lockdep.c:4506 [inline]
WARNING: CPU: 1 PID: 8519 at kernel/locking/lockdep.c:202 __lock_acquire+0x165e/0x5500 kernel/locking/lockdep.c:4782
Modules linked in:
CPU: 1 PID: 8519 Comm: syz-executor.5 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:202 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:191 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4506 [inline]
RIP: 0010:__lock_acquire+0x165e/0x5500 kernel/locking/lockdep.c:4782
Code: 08 84 d2 0f 85 1c 2c 00 00 8b 15 35 60 97 0b 85 d2 0f 85 5f fa ff ff 48 c7 c6 e0 66 4b 89 48 c7 c7 00 5d 4b 89 e8 ae b6 5a 07 <0f> 0b e9 45 fa ff ff c7 44 24 60 fe ff ff ff 41 bf 01 00 00 00 c7
RSP: 0018:ffffc900017af7f0 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888011c50000 RSI: ffffffff8158ca25 RDI: fffff520002f5ef0
RBP: ffff888011c50000 R08: 0000000000000001 R09: ffff8880b9f2011b
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888011c509e0
R13: 00000000000019b2 R14: ffff88801bdee0a0 R15: 0000000000040000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e591940ca8 CR3: 000000001fc8f000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire kernel/locking/lockdep.c:5437 [inline]
 lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:3055
 l2cap_sock_teardown_cb+0xa1/0x660 net/bluetooth/l2cap_sock.c:1520
 l2cap_chan_del+0xbc/0xa80 net/bluetooth/l2cap_core.c:618
 l2cap_conn_del+0x3c0/0x7b0 net/bluetooth/l2cap_core.c:1896
 l2cap_disconn_cfm net/bluetooth/l2cap_core.c:8167 [inline]
 l2cap_disconn_cfm+0x98/0xd0 net/bluetooth/l2cap_core.c:8160
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1462 [inline]
 hci_conn_hash_flush+0x127/0x260 net/bluetooth/hci_conn.c:1565
 hci_dev_do_close+0x569/0x1110 net/bluetooth/hci_core.c:1776
 hci_unregister_dev+0x223/0xfe0 net/bluetooth/hci_core.c:3872
 vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:340
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:151
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0xb64/0x29b0 kernel/exit.c:809
 do_group_exit+0x125/0x310 kernel/exit.c:906
 __do_sys_exit_group kernel/exit.c:917 [inline]
 __se_sys_exit_group kernel/exit.c:915 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:915
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e159
Code: Unable to access opcode bytes at RIP 0x45e12f.
RSP: 002b:00007ffce02e92c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045e159
RDX: 00000000004179f1 RSI: 00000000016b9df0 RDI: 0000000000000043
RBP: 00000000004c3c61 R08: 000000000000000b R09: 0000000000000000
R10: 0000000003483940 R11: 0000000000000246 R12: 0000000000000012
R13: 00007ffce02e9410 R14: 00007ffce02e9420 R15: 000000000011a218