INFO: task syz.9.5575:17420 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.5575      state:D stack:0     pid:17420 tgid:17420 ppid:17109  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 request_wait_answer fs/fuse/dev.c:476 [inline]
 __fuse_request_send fs/fuse/dev.c:491 [inline]
 __fuse_simple_request+0xdb1/0x1980 fs/fuse/dev.c:586
 fuse_simple_request fs/fuse/fuse_i.h:1248 [inline]
 fuse_flush+0x909/0x1d50 fs/fuse/file.c:582
 filp_flush fs/open.c:1550 [inline]
 filp_close+0xc0/0x160 fs/open.c:1563
 __range_close fs/file.c:712 [inline]
 __close_range+0x50e/0x6c0 fs/file.c:769
 __do_sys_close_range fs/open.c:1616 [inline]
 __se_sys_close_range fs/open.c:1613 [inline]
 __x64_sys_close_range+0x7e/0x90 fs/open.c:1613
 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: 0033:0x7f6c2418eba9
RSP: 002b:00007ffd2608c528 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 000000000004741e RCX: 00007f6c2418eba9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f6c243d7da0 R08: 0000000000000001 R09: 0000000c2608c81f
R10: 0000001b31020000 R11: 0000000000000246 R12: 00007f6c243d5fac
R13: 00007f6c243d5fa0 R14: ffffffffffffffff R15: 00007ffd2608c640
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 fee5265d319350b22cf00991634aaaf1de34201c
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2c7/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 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: 282 Comm: syz-executor Not tainted syzkaller #0 fee5265d319350b22cf00991634aaaf1de34201c
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:sock_read_iter+0x92/0x2f0 net/socket.c:1129
Code: f1 f1 f1 41 c7 44 1f 11 f3 f3 f3 f3 66 41 c7 44 1f 15 f3 f3 41 c6 44 1f 17 f3 e8 89 75 20 fd 4c 89 e0 48 c1 e8 03 80 3c 18 00 <74> 08 4c 89 e7 e8 34 aa 76 fd 48 8d 5c 24 40 4d 8b 2c 24 49 8d 7d
RSP: 0018:ffffc9000111fb60 EFLAGS: 00000246
RAX: 1ffff92000223fa4 RBX: dffffc0000000000 RCX: ffff888124f81300
RDX: 0000000000000000 RSI: ffffc9000111fd70 RDI: ffffc9000111fd20
RBP: ffffc9000111fc90 R08: ffffc9000111fd7f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff84656e00 R12: ffffc9000111fd20
R13: ffffffff8669cae8 R14: 1ffff92000223fa0 R15: 1ffff92000223f70
FS:  0000555575058500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557ce214a8 CR3: 0000000124010000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000000000fb DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 new_sync_read fs/read_write.c:489 [inline]
 vfs_read+0x53d/0xb60 fs/read_write.c:570
 ksys_read+0x141/0x250 fs/read_write.c:713
 __do_sys_read fs/read_write.c:723 [inline]
 __se_sys_read fs/read_write.c:721 [inline]
 __x64_sys_read+0x7f/0x90 fs/read_write.c:721
 x64_sys_call+0x2638/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:1
 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: 0033:0x7fcc7778d57d
Code: a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb b5 e8 a8 48 00 00 0f 1f 84 00 00 00 00 00 80 3d e1 af 21 00 00 74 17 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 5b c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec
RSP: 002b:00007fff99a06bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcc7778d57d
RDX: 0000000000000004 RSI: 00007fff99a06c0c RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000003534f9b R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff99a07020
R13: 0000000000000004 R14: 00007fff99a06c0c R15: 00007fff99a06ca0
 </TASK>