------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 0 PID: 14456 at kernel/locking/lockdep.c:202 hlock_class kernel/locking/lockdep.c:202 [inline]
WARNING: CPU: 0 PID: 14456 at kernel/locking/lockdep.c:202 check_wait_context kernel/locking/lockdep.c:4506 [inline]
WARNING: CPU: 0 PID: 14456 at kernel/locking/lockdep.c:202 __lock_acquire+0xa46/0x5e90 kernel/locking/lockdep.c:4782
Modules linked in:
CPU: 0 PID: 14456 Comm: syz-executor.5 Not tainted 5.11.0-rc6-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:check_wait_context kernel/locking/lockdep.c:4506 [inline]
RIP: 0010:__lock_acquire+0xa46/0x5e90 kernel/locking/lockdep.c:4782
Code: b8 0b 00 0f 85 fc fa ff ff 31 db 48 c7 c7 c0 73 ae 89 48 c7 c6 00 77 ae 89 31 c0 e8 54 c7 eb ff 48 ba 00 00 00 00 00 fc ff df <0f> 0b e9 f6 fa ff ff e8 be 8b ec 07 85 c0 0f 84 a7 07 00 00 48 c7
RSP: 0018:ffffc9000912f5e0 EFLAGS: 00010046
RAX: d26da29e09168d00 RBX: 0000000000000000 RCX: ffff888029bdd340
RDX: dffffc0000000000 RSI: 0000000080000201 RDI: 0000000000000000
RBP: ffffc9000912f788 R08: ffffffff815fa2d2 R09: ffffed1017384004
R10: ffffed1017384004 R11: 0000000000000000 R12: ffff888029bdd340
R13: ffff888029bdddb0 R14: 0000000000040d3f R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000400200 CR3: 000000005b877000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x114/0x5e0 kernel/locking/lockdep.c:5442
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x43/0x110 net/core/sock.c:3049
 l2cap_sock_teardown_cb+0x76/0x360 net/bluetooth/l2cap_sock.c:1520
 l2cap_chan_del+0xaf/0x610 net/bluetooth/l2cap_core.c:618
 l2cap_conn_del+0x406/0x650 net/bluetooth/l2cap_core.c:1896
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1462 [inline]
 hci_conn_hash_flush+0x112/0x240 net/bluetooth/hci_conn.c:1565
 hci_dev_do_close+0xa04/0xfe0 net/bluetooth/hci_core.c:1776
 hci_unregister_dev+0x27d/0x16f0 net/bluetooth/hci_core.c:3872
 vhci_release+0x73/0xc0 drivers/bluetooth/hci_vhci.c:340
 __fput+0x34d/0x7a0 fs/file_table.c:280
 task_work_run+0x137/0x1c0 kernel/task_work.c:140
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x6e4/0x2380 kernel/exit.c:825
 do_group_exit+0x168/0x2d0 kernel/exit.c:922
 get_signal+0x1734/0x1ef0 kernel/signal.c:2773
 arch_do_signal_or_restart+0x3c/0x610 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0xac/0x1e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x48/0x180 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: Unable to access opcode bytes at RIP 0x45e1ef.
RSP: 002b:00007fd7761e2cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000119bf88 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000119bf88
RBP: 000000000119bf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff63fabe3f R14: 00007fd7761e39c0 R15: 000000000119bf8c