INFO: task syz.2.16:458 blocked for more than 122 seconds.
      Not tainted 6.12.30-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.16        state:D stack:0     pid:458   tgid:458   ppid:454    flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5332 [inline]
 __schedule+0xda5/0x1780 kernel/sched/core.c:6710
 __schedule_loop kernel/sched/core.c:6787 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:6802
 request_wait_answer fs/fuse/dev.c:464 [inline]
 __fuse_request_send fs/fuse/dev.c:478 [inline]
 __fuse_simple_request+0xe46/0x1900 fs/fuse/dev.c:572
 fuse_simple_request fs/fuse/fuse_i.h:1162 [inline]
 fuse_flush+0x5b3/0x840 fs/fuse/file.c:542
 filp_flush fs/open.c:1527 [inline]
 filp_close+0xc0/0x160 fs/open.c:1540
 __range_close fs/file.c:712 [inline]
 __close_range+0x50e/0x6c0 fs/file.c:769
 __do_sys_close_range fs/open.c:1593 [inline]
 __se_sys_close_range fs/open.c:1590 [inline]
 __x64_sys_close_range+0x7e/0x90 fs/open.c:1590
 x64_sys_call+0x1686/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:437
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f5f6558e929
RSP: 002b:00007ffc15755138 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 000000000000d77d RCX: 00007f5f6558e929
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f5f657b7ba0 R08: 0000000000000001 R09: 0000000b1575542f
R10: 00007f5f65400000 R11: 0000000000000246 R12: 00007f5f657b5fac
R13: 00007f5f657b5fa0 R14: ffffffffffffffff R15: 00007ffc15755250
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller #0 7fdd827982619cc7e88646a73201cbf83046ea89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xbd4/0xc20 kernel/hung_task.c:379
 kthread+0x2c7/0x370 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 545 Comm: syz-executor Not tainted 6.12.30-syzkaller #0 7fdd827982619cc7e88646a73201cbf83046ea89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__asan_memset+0x42/0x50 mm/kasan/shadow.c:88
Code: 4d 08 48 89 d6 ba 01 00 00 00 e8 39 e4 ff ff 84 c0 74 10 4c 89 ff 44 89 f6 48 89 da e8 b7 0c 70 03 eb 02 31 c0 5b 41 5e 41 5f <5d> e9 c8 eb 75 03 cc 0f 1f 80 00 00 00 00 b8 6b e4 3c 4a 90 90 90
RSP: 0000:ffffc90001307d10 EFLAGS: 00000246
RAX: ffffc90001307dbc RBX: ffff8881203b39c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90001307dc8
RBP: ffffc90001307d10 R08: 0000000000000004 R09: 0000000000000004
R10: ffffc90001307dbc R11: fffff52000260fb9 R12: ffffc90001307d80
R13: 0000000000000255 R14: 00007f59adec8040 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59adec8040 CR3: 000000011db6e000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_vma_under_rcu+0xea/0x480 mm/memory.c:6238
 do_user_addr_fault+0x2f9/0x1150 arch/x86/mm/fault.c:1329
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x59/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f59adda6b44
Code: 66 0f 1f 44 00 00 48 8b 38 8b 50 08 4c 01 ff 48 83 fa 26 74 0a 48 83 fa 08 0f 85 1b 0a 00 00 48 8b 50 10 48 83 c0 18 4c 01 fa <48> 89 17 48 39 d8 72 d4 4c 8b b1 e8 01 00 00 49 01 f0 4d 85 f6 0f
RSP: 002b:00007ffc31014e50 EFLAGS: 00010202
RAX: 00007f59adc0a6f8 RBX: 00007f59adc48540 RCX: 00007f59adf86700
RDX: 00007f59ade17fc4 RSI: 00007f59adc003c0 RDI: 00007f59adec8040
RBP: 00007f59adf86700 R08: 0000000000048570 R09: 00007f59adc48930
R10: 0000000070000025 R11: 00007f59adc003a0 R12: 00007ffc31014e90
R13: 00007ffc31015018 R14: 00007ffc31014fb0 R15: 00007f59adc00000
 </TASK>