INFO: task syz.7.2181:13985 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.2181      state:D stack:26984 pid:13985 tgid:13982 ppid:10662  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_do_getattr+0x33b/0x620 fs/fuse/dir.c:1317
 fuse_perm_getattr fs/fuse/dir.c:1544 [inline]
 fuse_permission+0x4e5/0xdc0 fs/fuse/dir.c:1585
 do_inode_permission fs/namei.c:526 [inline]
 inode_permission+0x282/0x470 fs/namei.c:593
 may_open+0x325/0x4c0 fs/namei.c:3477
 do_open fs/namei.c:3885 [inline]
 path_openat+0x2d91/0x3830 fs/namei.c:4046
 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: 0033:0x7fea2e18ebe9
RSP: 002b:00007fea2f059038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fea2e3b6180 RCX: 00007fea2e18ebe9
RDX: 0000000000080101 RSI: 000020000000c380 RDI: ffffffffffffff9c
RBP: 00007fea2e211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fea2e3b6218 R14: 00007fea2e3b6180 R15: 00007ffe983cecf8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5849 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:__cpu_to_node+0x0/0xe0 arch/x86/mm/numa.c:334
Code: fb e8 d4 aa 49 00 89 df be ff ff ff ff 5b e9 17 fd ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 53 89 fb 49 bf 00 00 00 00 00 fc ff df e8
RSP: 0018:ffffc90004077d98 EFLAGS: 00000246
RAX: ffff88802440da00 RBX: ffff88802440ef70 RCX: ffff88802440da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90004077eb0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90004077e20 R11: fffff5200080efc8 R12: 000055558a4ace20
R13: ffffc90004077fc8 R14: 1ffff11004881dee R15: ffff88802440da00
FS:  000055558a4ac500(0000) GS:ffff8881258c4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dc1eff8 CR3: 00000000763c2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 rseq_update_cpu_node_id kernel/rseq.c:165 [inline]
 __rseq_handle_notify_resume+0x1de/0x11f0 kernel/rseq.c:442
 rseq_handle_notify_resume include/linux/rseq.h:38 [inline]
 resume_user_mode_work include/linux/resume_user_mode.h:62 [inline]
 exit_to_user_mode_loop+0xc2/0x130 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: 0033:0x7efcb15c1463
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d fe 70 1c 00 00 74 14 b8 e6 00 00 00 0f 05 <f7> d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffc62de6c68 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007efcb15c1463
RDX: 00007ffc62de6c80 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 000000002f334c30 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc62de70d0
R13: 0000000000000004 R14: 00007ffc62de6cbc R15: 00007ffc62de6d50
 </TASK>