INFO: task syz.2.2928:16133 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.2928      state:D stack:27720 pid:16133 tgid:16129 ppid:13305  task_flags:0x400140 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
 request_wait_answer fs/fuse/dev.c:567 [inline]
 __fuse_request_send fs/fuse/dev.c:581 [inline]
 __fuse_simple_request+0xf15/0x18d0 fs/fuse/dev.c:675
 fuse_simple_request fs/fuse/fuse_i.h:1247 [inline]
 fuse_lookup_name+0x34c/0x860 fs/fuse/dir.c:381
 fuse_lookup+0x1e9/0x640 fs/fuse/dir.c:428
 fuse_atomic_open+0x173/0x440 fs/fuse/dir.c:748
 atomic_open fs/namei.c:3568 [inline]
 lookup_open fs/namei.c:3679 [inline]
 open_last_lookups fs/namei.c:3807 [inline]
 path_openat+0xf63/0x3830 fs/namei.c:4043
 do_filp_open+0x1fa/0x410 fs/namei.c:4073
 do_sys_openat2+0x121/0x1c0 fs/open.c:1435
 do_sys_open fs/open.c:1450 [inline]
 __do_sys_openat fs/open.c:1466 [inline]
 __se_sys_openat fs/open.c:1461 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1461
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f454f38ebe9
RSP: 002b:00007f45501c2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f454f5b6180 RCX: 00007f454f38ebe9
RDX: 000000000004a300 RSI: 0000200000000640 RDI: ffffffffffffff9c
RBP: 00007f454f411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000000cd R11: 0000000000000246 R12: 0000000000000000
R13: 00007f454f5b6218 R14: 00007f454f5b6180 R15: 00007ffee04df7f8
 </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: 16 Comm: rcu_preempt Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:update_load_avg+0x0/0x1880 kernel/sched/fair.c:4720
Code: fc ff ff 4c 89 ff e8 1f 0b 90 00 e9 24 fc ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 58 41 89 d4 48 89 74 24 10
RSP: 0018:ffffc90000157628 EFLAGS: 00000097
RAX: 0000000000000001 RBX: ffff88801d29da80 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff88801d29da80 RDI: ffff8880b863a040
RBP: dffffc0000000000 R08: ffffffff8fe52d37 R09: 1ffffffff1fca5a6
R10: dffffc0000000000 R11: fffffbfff1fca5a7 R12: 0000000000000009
R13: ffff8880b863a040 R14: ffff88801d29db28 R15: ffff88801d29da68
FS:  0000000000000000(0000) GS:ffff8881257c4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c439d06 CR3: 0000000074e60000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dequeue_entity+0x3f9/0x1690 kernel/sched/fair.c:5420
 dequeue_entities+0x1c0/0x13d0 kernel/sched/fair.c:6984
 dequeue_task_fair+0x205/0x580 kernel/sched/fair.c:7080
 block_task kernel/sched/core.c:2155 [inline]
 try_to_block_task kernel/sched/core.c:6585 [inline]
 __schedule+0x5f1/0x4cc0 kernel/sched/core.c:6896
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 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>