INFO: task syz-executor.0:5514 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:28208 pid:5514  ppid:5434   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0xb4a/0x5410 kernel/sched/core.c:6555
 schedule+0xda/0x1b0 kernel/sched/core.c:6631
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6690
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 blkdev_put+0x9a/0x660 block/bdev.c:911
 blkdev_close+0x5f/0x90 block/fops.c:492
 __fput+0x1fa/0x9a0 fs/file_table.c:320
 task_work_run+0x12b/0x220 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb053e3bd4b
RSP: 002b:00007ffdf4fc91f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007fb053e3bd4b
RDX: 0000001b2f220000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fb053f9d960 R08: 0000000000000000 R09: 00007ffdf4fef080
R10: 00007ffdf4fef090 R11: 0000000000000293 R12: 000000000000f852
R13: 00007ffdf4fc92f0 R14: 00007ffdf4fc9310 R15: 0000000000000032
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8b17f950 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8b17f650 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8b1804a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
1 lock held by syslogd/4380:
 #0: ffff8880b9d3a518 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:537
2 locks held by getty/4706:
 #0: ffff88802a02b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb6f/0x1040 drivers/tty/n_tty.c:2177
1 lock held by udevd/5432:
 #0: ffff8881469e64c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x78/0xa00 block/bdev.c:813
1 lock held by syz-executor.0/5514:
 #0: ffff8881469e64c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x9a/0x660 block/bdev.c:911

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x18/0x106 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x255/0x2d0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0x8c4/0xc60 kernel/hung_task.c:377
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:108
Code: 00 00 be 01 00 00 00 e9 c6 81 2c 00 66 0f 1f 44 00 00 b8 01 00 00 00 c3 cc cc cc cc cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff <c3> 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48
RSP: 0018:ffffc900001e0fd8 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffffff8ab85ac0 RCX: 1ffff110173a4ef6
RDX: 1ffffffff1570b58 RSI: 0000000000000000 RDI: 00000000000000b0
RBP: ffffc90000177c78 R08: ffffffff8e673058 R09: ffffffff8e67304f
R10: ffffffff8e673057 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa6f4b8a990 CR3: 000000000ae8e000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 apic_eoi arch/x86/include/asm/apic.h:398 [inline]
 ack_APIC_irq arch/x86/include/asm/apic.h:444 [inline]
 __sysvec_call_function_single+0x4c/0x4d0 arch/x86/kernel/smp.c:245
 sysvec_call_function_single+0x8e/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:657
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline]
RIP: 0010:acpi_idle_do_entry+0x185/0x200 drivers/acpi/processor_idle.c:570
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 65 48 8b 45 00 a8 08 75 c9 e8 46 8b 9f f8 eb 07 0f 00 2d cd a5 98 00 fb f4 <9c> 58 fa f6 c4 02 74 b1 5d e9 bd 89 9f f8 48 89 ef 5d e9 c4 f2 ff
RSP: 0018:ffffc90000177d28 EFLAGS: 00000206
RAX: 0000000000092cd7 RBX: ffff8880162c9865 RCX: 1ffffffff19e4831
RDX: 0000000000000000 RSI: ffffffff890be940 RDI: ffffffff896628a0
RBP: ffff888010e89d00 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed10021d13a0 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8880162c9864 R14: ffffffff8bb88440 R15: ffff888146384804
 acpi_idle_enter+0x2c3/0x4c0 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x152/0xc40 drivers/cpuidle/cpuidle.c:239
 cpuidle_enter+0x45/0xa0 drivers/cpuidle/cpuidle.c:356
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x3f7/0x590 kernel/sched/idle.c:303
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400
 start_secondary+0x252/0x300 arch/x86/kernel/smpboot.c:264
 secondary_startup_64_no_verify+0xce/0xdb
 </TASK>