INFO: task syz.1.6677:16142 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.6677      state:D stack:0     pid:16142 tgid:16142 ppid:14399  flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 fuse_set_nowrite+0x1e1/0x330 fs/fuse/dir.c:2129
 fuse_sync_writes fs/fuse/file.c:546 [inline]
 fuse_flush+0x76e/0x1f20 fs/fuse/file.c:581
 filp_flush fs/open.c:1546 [inline]
 filp_close+0xc0/0x160 fs/open.c:1559
 __range_close fs/file.c:726 [inline]
 __close_range+0x344/0x4e0 fs/file.c:796
 __do_sys_close_range fs/open.c:1612 [inline]
 __se_sys_close_range fs/open.c:1609 [inline]
 __x64_sys_close_range+0x7e/0x90 fs/open.c:1609
 x64_sys_call+0x1686/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:437
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f8081d9e159
RSP: 002b:00007ffed9a6c088 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007ffed9a6c170 RCX: 00007f8081d9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000004a192 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2f920000 R11: 0000000000000246 R12: 00007ffed9a6c1b0
R13: 00007f8082025fac R14: 000000000004a268 R15: 00007f8082025fa0
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 67445127a0e550c06f7dc74ca5ff4a71fcbc5924
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2ba/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+0xe45/0xf90 kernel/hung_task.c:423
 kthread+0x2c4/0x360 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 21853 Comm: syz.5.9041 Not tainted syzkaller #0 67445127a0e550c06f7dc74ca5ff4a71fcbc5924
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:format_decode+0xb76/0x1610 lib/vsprintf.c:-1
Code: 8b 5d a0 48 8b 45 b0 0f b6 04 10 84 c0 0f 85 39 05 00 00 48 8b 45 a8 0f b6 04 10 84 c0 0f 85 55 05 00 00 48 8b 45 c0 4c 89 28 <48> 8b 45 b0 0f b6 04 10 84 c0 0f 85 76 04 00 00 48 8b 45 a8 0f b6
RSP: 0018:ffffc900048a6ee8 EFLAGS: 00000287
RAX: ffffffff85a185a3 RBX: 000000000000006c RCX: 0000000000080000
RDX: dffffc0000000000 RSI: 000000000001d02c RDI: 000000000001d02d
RBP: ffffc900048a6f58 R08: ffff8881147bcc00 R09: 000000000000000a
R10: 0000000000000078 R11: 0000000000000002 R12: 0000000000000075
R13: ffff000000000500 R14: ffffffff85e92de4 R15: 1ffffffff0bd25bc
FS:  00007fb6d67ae6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6d67adff8 CR3: 000000012c42e000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 vsnprintf+0xe6/0x1ad0 lib/vsprintf.c:2755
 sprintf+0xe8/0x140 lib/vsprintf.c:3007
 print_time kernel/printk/printk.c:1387 [inline]
 info_print_prefix+0x183/0x4a0 kernel/printk/printk.c:1416
 record_print_text+0x182/0x4b0 kernel/printk/printk.c:1465
 printk_get_next_message+0x2ab/0x9e0 kernel/printk/printk.c:3037
 console_emit_next_record kernel/printk/printk.c:3108 [inline]
 console_flush_all+0x3d0/0xc10 kernel/printk/printk.c:3242
 __console_flush_and_unlock kernel/printk/printk.c:3301 [inline]
 console_unlock+0xf8/0x2c0 kernel/printk/printk.c:3341
 vprintk_emit+0x282/0x650 kernel/printk/printk.c:2462
 vprintk_default+0x2a/0x40 kernel/printk/printk.c:2477
 vprintk+0x93/0xa0 kernel/printk/printk_safe.c:75
 _printk+0xde/0x140 kernel/printk/printk.c:2487
 ovl_get_layers fs/overlayfs/super.c:1046 [inline]
 ovl_get_lowerstack fs/overlayfs/super.c:1143 [inline]
 ovl_fill_super+0x33b1/0x3c10 fs/overlayfs/super.c:1391
 vfs_get_super fs/super.c:1286 [inline]
 get_tree_nodev+0xce/0x170 fs/super.c:1305
 ovl_get_tree+0x20/0x30 fs/overlayfs/params.c:632
 vfs_get_tree+0xa1/0x290 fs/super.c:1820
 do_new_mount+0x251/0xb40 fs/namespace.c:3567
 path_mount+0x66a/0xff0 fs/namespace.c:3894
 do_mount fs/namespace.c:3907 [inline]
 __do_sys_mount fs/namespace.c:4117 [inline]
 __se_sys_mount+0x2bf/0x480 fs/namespace.c:4094
 __x64_sys_mount+0xc3/0xf0 fs/namespace.c:4094
 x64_sys_call+0x2021/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb6d599e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb6d67ae028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb6d5c26090 RCX: 00007fb6d599e159
RDX: 0000200000000180 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007fb6d5a3503b R08: 00002000000001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb6d5c26128 R14: 00007fb6d5c26090 R15: 00007ffc15831f68
 </TASK>