INFO: task syz.1.1556:15504 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1556      state:D stack:26728 pid:15504 tgid:15502 ppid:11288  task_flags:0x400740 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common+0x3da/0x710 kernel/sched/completion.c:121
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:269
 coredump_wait fs/coredump.c:534 [inline]
 vfs_coredump+0x8cf/0x2a60 fs/coredump.c:1131
 get_signal+0x1109/0x1340 kernel/signal.c:3019
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x130 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32f218d550
RSP: 002b:00007f32f03f3ef0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f32f218d550
RDX: 0000000000000002 RSI: 00007f32f2211af4 RDI: 00000000ffffff9c
RBP: 00007f32f2211af4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000024 R14: 00002000000000c0 R15: 00007ffca6b19468
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
 watchdog+0xf60/0xfa0 kernel/hung_task.c:495
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16965 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:avg_vruntime kernel/sched/fair.c:656 [inline]
RIP: 0010:place_entity+0x29/0x580 kernel/sched/fair.c:5130
Code: 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 40 89 54 24 14 48 89 f3 48 89 fd 49 be 00 00 00 00 00 fc ff df 4c 8d 7f 58 4c 89 f8 <48> c1 e8 03 48 89 44 24 30 42 80 3c 30 00 74 08 4c 89 ff e8 9f 1b
RSP: 0018:ffffc90000007a60 EFLAGS: 00000086
RAX: ffff888058c14858 RBX: ffff888025af3c80 RCX: ffffffff81943f18
RDX: 0000000000000409 RSI: ffff888025af3c80 RDI: ffff888058c14800
RBP: ffff888058c14800 R08: ffff888057241187 R09: 1ffff1100ae48230
R10: dffffc0000000000 R11: ffffed100ae48231 R12: dffffc0000000000
R13: ffff888058c14800 R14: dffffc0000000000 R15: ffff888058c14858
FS:  000055557ae74500(0000) GS:ffff8881259ff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ccd9bd000 CR3: 0000000064a32000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 enqueue_entity+0xe6/0x1120 kernel/sched/fair.c:5278
 enqueue_task_fair+0x25a/0x1470 kernel/sched/fair.c:6876
 enqueue_task+0x75/0x420 kernel/sched/core.c:2090
 activate_task kernel/sched/core.c:2132 [inline]
 ttwu_do_activate+0x1f3/0x870 kernel/sched/core.c:3741
 ttwu_queue kernel/sched/core.c:4004 [inline]
 try_to_wake_up+0x721/0x12b0 kernel/sched/core.c:4328
 hrtimer_wakeup+0x4e/0x60 kernel/time/hrtimer.c:1997
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline]
RIP: 0010:vprintk_emit+0x58f/0x7a0 kernel/printk/printk.c:2449
Code: 85 32 01 00 00 e8 a1 81 1f 00 41 89 df 4d 85 f6 48 8b 1c 24 75 07 e8 90 81 1f 00 eb 06 e8 89 81 1f 00 fb 48 c7 c7 80 02 33 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 b9 35
RSP: 0018:ffffc90004dcf980 EFLAGS: 00000293
RAX: ffffffff81a10d47 RBX: ffffffff81a10c04 RCX: ffff88802a3f3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e330280
RBP: ffffc90004dcfa90 R08: ffffffff8fc40337 R09: 1ffffffff1f88066
R10: dffffc0000000000 R11: fffffbfff1f88067 R12: dffffc0000000000
R13: 1ffff920009b9f34 R14: 0000000000000200 R15: 0000000000000047
 _printk+0xcf/0x120 kernel/printk/printk.c:2475
 __xfs_printk fs/xfs/xfs_message.c:24 [inline]
 xfs_printk_level+0x18b/0x280 fs/xfs/xfs_message.c:44
 xfs_fs_put_super+0x55/0x160 fs/xfs/xfs_super.c:1245
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1723
 xfs_kill_sb+0x15/0x50 fs/xfs/xfs_super.c:2317
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1375
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x130 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e4318ff17
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff080fcd08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3e43211c05 RCX: 00007f3e4318ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff080fcdc0
RBP: 00007fff080fcdc0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff080fde50
R13: 00007f3e43211c05 R14: 000000000008f470 R15: 00007fff080fde90
 </TASK>