INFO: task syz-executor.5:5074 blocked for more than 143 seconds.
      Not tainted 6.5.0-syzkaller-12921-ga3c57ab79a06 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:24664 pid:5074  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0xee1/0x59f0 kernel/sched/core.c:6695
 schedule+0xe7/0x1b0 kernel/sched/core.c:6771
 schedule_timeout+0x27a/0x2c0 kernel/time/timer.c:2143
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e2/0x5f0 kernel/sched/completion.c:116
 __flush_work+0x5b4/0xbb0 kernel/workqueue.c:3407
 nilfs_segctor_destroy fs/nilfs2/segment.c:2766 [inline]
 nilfs_detach_log_writer+0x39a/0xa80 fs/nilfs2/segment.c:2850
 nilfs_put_super+0x43/0x1b0 fs/nilfs2/super.c:499
 generic_shutdown_super+0x161/0x3c0 fs/super.c:693
 kill_block_super+0x3b/0x70 fs/super.c:1646
 deactivate_locked_super+0x9a/0x170 fs/super.c:481
 deactivate_super+0xde/0x100 fs/super.c:514
 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
 task_work_run+0x14d/0x240 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9127e7de17
RSP: 002b:00007ffee3f46cc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9127e7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffee3f46d80
RBP: 00007ffee3f46d80 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffee3f47e40
R13: 00007f9127ec73b9 R14: 0000000000242e13 R15: 000000000000001b
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.5.0-syzkaller-12921-ga3c57ab79a06 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfac/0x1230 kernel/hung_task.c:379
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4480 Comm: klogd Not tainted 6.5.0-syzkaller-12921-ga3c57ab79a06 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 kernel/kcov.c:207
Code: 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 3d ee 7b 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 c0 bc 03 00 a9
RSP: 0018:ffffc9000306f830 EFLAGS: 00000202
RAX: 0000000080000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88807e148000 RSI: ffffffff8a31601a RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000040ae80 R12: ffffc9000306f938
R13: ffffffff8a8d7ba3 R14: 0000000000000001 R15: dffffc0000000000
FS:  00007f50f2b04380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c8ffc3c680 CR3: 000000002a697000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 format_decode+0x2d4/0xba0 lib/vsprintf.c:2559
 vsnprintf+0x13d/0x1870 lib/vsprintf.c:2770
 sprintf+0xcd/0x100 lib/vsprintf.c:3022
 print_syslog kernel/printk/printk.c:1320 [inline]
 info_print_prefix+0x2e2/0x350 kernel/printk/printk.c:1350
 record_print_text+0x143/0x410 kernel/printk/printk.c:1402
 syslog_print+0x4e5/0x5d0 kernel/printk/printk.c:1613
 do_syslog+0x2d4/0x580 kernel/printk/printk.c:1732
 __do_sys_syslog kernel/printk/printk.c:1824 [inline]
 __se_sys_syslog kernel/printk/printk.c:1822 [inline]
 __x64_sys_syslog+0x74/0xb0 kernel/printk/printk.c:1822
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f50f2c65fa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff021efb38 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f50f2e044a0 RCX: 00007f50f2c65fa7
RDX: 00000000000003ff RSI: 00007f50f2e044a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 898b8af545e3b4f1
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f50f2e044a0
R13: 00007f50f2df4212 R14: 00007f50f2e044fc R15: 00007f50f2e044fc
 </TASK>