INFO: task syz-executor151:3612 blocked for more than 143 seconds.
      Not tainted 6.1.77-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor151 state:D stack:28168 pid:3612  ppid:3577   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
 blkdev_put+0x100/0x750 block/bdev.c:913
 blkdev_close+0x56/0x80 block/fops.c:514
 __fput+0x3b7/0x890 fs/file_table.c:320
 task_work_run+0x246/0x300 kernel/task_work.c:179
 get_signal+0x15fc/0x17d0 kernel/signal.c:2639
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:297
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3cbb8a24b9
RSP: 002b:00007f3cbb83f228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f3cbb929338 RCX: 00007f3cbb8a24b9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007f3cbb929330 R08: 00007ffce9412937 R09: 00007f3cbb83f6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3cbb92933c
R13: 00007f3cbb8f61a4 R14: 64626e2f7665642f R15: 00007ffce9412938
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8d12a910 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8d12b110 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/28:
 #0: ffffffff8d12a740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:318 [inline]
 #0: ffffffff8d12a740 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:759 [inline]
 #0: ffffffff8d12a740 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
2 locks held by getty/3306:
 #0: ffff888029287098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2188
1 lock held by udevd/3582:
 #0: ffff88802011b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x148/0xa10 block/bdev.c:815
1 lock held by syz-executor151/3612:
 #0: ffff88802011b4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x100/0x750 block/bdev.c:913

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.77-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 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+0xf88/0xfd0 kernel/hung_task.c:377
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.77-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue:  0x0 (events_unbound)
RIP: 0010:___update_load_sum kernel/sched/pelt.c:226 [inline]
RIP: 0010:update_rt_rq_load_avg+0x3e6/0x9c0 kernel/sched/pelt.c:348
Code: 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 c3 02 00 00 01 2b 4c 89 f3 48 8b 6c 24 20 48 8b 34 24 eb 1a <48> 8b 5c 24 28 48 8b 6c 24 20 42 0f b6 44 35 00 84 c0 0f 85 63 04
RSP: 0018:ffffc90000107818 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 00000000000000d2 RSI: 00000000000010d2 RDI: 0000000000000004
RBP: 1ffff1101730752b R08: dffffc0000000000 R09: fffffbfff1ce6876
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b983a958
R13: ffff8880b9839e00 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc786ae228 CR3: 000000000ce8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __update_blocked_others kernel/sched/fair.c:8674 [inline]
 update_blocked_averages+0x32f/0x16a0 kernel/sched/fair.c:8805
 newidle_balance+0x4ae/0x10b0 kernel/sched/fair.c:11582
 pick_next_task_fair+0x27d/0xdc0 kernel/sched/fair.c:7887
 __pick_next_task kernel/sched/core.c:5868 [inline]
 pick_next_task kernel/sched/core.c:5943 [inline]
 __schedule+0x7a9/0x4550 kernel/sched/core.c:6522
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 worker_thread+0xe9d/0x1200 kernel/workqueue.c:2460
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.193 msecs