INFO: task syz-executor.4:32173 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:28288 pid:32173 tgid:32173 ppid:5102   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf15/0x5c80 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe7/0x270 kernel/sched/core.c:6817
 schedule_timeout+0x254/0x290 kernel/time/timer.c:2159
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3da/0x5f0 kernel/sched/completion.c:116
 __flush_work+0x522/0xa10 kernel/workqueue.c:3410
 __cancel_work_timer+0x3ef/0x590 kernel/workqueue.c:3497
 hci_cmd_sync_clear+0x2b/0x2b0 net/bluetooth/hci_sync.c:573
 hci_unregister_dev+0x188/0x600 net/bluetooth/hci_core.c:2733
 vhci_release+0x7f/0x100 drivers/bluetooth/hci_vhci.c:674
 __fput+0x270/0xb70 fs/file_table.c:376
 task_work_run+0x14c/0x240 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa7d/0x2ac0 kernel/exit.c:871
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1020
 get_signal+0x238c/0x2760 kernel/signal.c:2893
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f6a8be7cce9
RSP: 002b:00007f6a8cbe6078 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f6a8bf9c050 RCX: 00007f6a8be7cce9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6a8bec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6a8bf9c050 R15: 00007ffc19848628
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf86/0x1210 kernel/hung_task.c:379
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112