INFO: task syz-executor.0:19542 blocked for more than 149 seconds.
      Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:27552 pid:19542 ppid:  6483 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4969 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6250
 schedule+0xd2/0x260 kernel/sched/core.c:6323
 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline]
 synchronize_rcu_expedited+0x5a8/0x620 kernel/rcu/tree_exp.h:836
 synchronize_rcu+0x132/0x190 kernel/rcu/tree.c:3744
 hci_conn_hash_del include/net/bluetooth/hci_core.h:932 [inline]
 hci_conn_cleanup+0x177/0x6c0 net/bluetooth/hci_conn.c:123
 hci_conn_del+0x2a0/0x790 net/bluetooth/hci_conn.c:806
 hci_conn_hash_flush+0x19c/0x260 net/bluetooth/hci_conn.c:1743
 hci_dev_do_close+0x57d/0x1150 net/bluetooth/hci_core.c:1672
 hci_unregister_dev+0x1c8/0x5b0 net/bluetooth/hci_core.c:3915
 vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:462
 __fput+0x286/0x9f0 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc14/0x2b40 kernel/exit.c:832
 do_group_exit+0x125/0x310 kernel/exit.c:929
 get_signal+0x47d/0x21d0 kernel/signal.c:2820
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f415974ff87
RSP: 002b:00007ffc953b9520 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000000000004c83 RCX: 00007f415974ff87
RDX: 0000000040000000 RSI: 00007ffc953b955c RDI: 00000000ffffffff
RBP: 00007ffc953b955c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f4159865bf0
R13: 00007ffc953b9650 R14: 0000000000000000 R15: 00000000000000f8
 </TASK>