INFO: task segctord:4634 blocked for more than 143 seconds.
      Not tainted 6.0.0-syzkaller-07362-g62e6e5940c0c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord        state:D stack:25016 pid: 4634 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5183 [inline]
 __schedule+0x91f/0xdf0 kernel/sched/core.c:6495
 schedule+0xcb/0x190 kernel/sched/core.c:6571
 rwsem_down_write_slowpath+0xf1c/0x1350 kernel/locking/rwsem.c:1182
 __down_write_common kernel/locking/rwsem.c:1297 [inline]
 __down_write kernel/locking/rwsem.c:1306 [inline]
 down_write+0x163/0x170 kernel/locking/rwsem.c:1553
 nilfs_transaction_lock+0x246/0x4b0 fs/nilfs2/segment.c:357
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2482 [inline]
 nilfs_segctor_thread+0x52a/0x1180 fs/nilfs2/segment.c:2566
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-07362-g62e6e5940c0c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x425/0x450 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x169/0x280 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xcd5/0xd20 kernel/hung_task.c:369
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3596 Comm: syz-fuzzer Not tainted 6.0.0-syzkaller-07362-g62e6e5940c0c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:rcu_read_lock_sched_held+0x8/0x110 kernel/rcu/update.c:120
Code: 00 00 e9 9b 3a 22 00 66 2e 0f 1f 84 00 00 00 00 00 90 e9 eb 3d 22 00 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 <53> 48 83 e4 e0 48 83 ec 60 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc90003d9fc38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e0bc968
RBP: ffffc90003d9fc48 R08: dffffc0000000000 R09: fffffbfff1c1792e
R10: fffffbfff1c1792e R11: 1ffffffff1c1792d R12: dffffc0000000000
R13: 1ffff920007b3f98 R14: 0000000000000000 R15: 0000000000000000
FS:  000000c000052090(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9953e8fc8 CR3: 00000000704b9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 trace_lock_acquire+0x7f/0x1d0 include/trace/events/lock.h:24
 lock_acquire+0xa4/0x3c0 kernel/locking/lockdep.c:5637
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:304
 rcu_read_lock include/linux/rcupdate.h:738 [inline]
 __task_pid_nr_ns+0x27/0x3c0 kernel/pid.c:497
 task_tgid_vnr include/linux/sched.h:1614 [inline]
 do_tkill kernel/signal.c:3935 [inline]
 __do_sys_tgkill kernel/signal.c:3957 [inline]
 __se_sys_tgkill kernel/signal.c:3951 [inline]
 __x64_sys_tgkill+0x193/0x360 kernel/signal.c:3951
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x467116
Code: c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 48 8b 54 24 18 b8 ea 00 00 00 0f 05 <c3> cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 8b 74 24 10 48 8b 54
RSP: 002b:000000c000061e98 EFLAGS: 00000206 ORIG_RAX: 00000000000000ea
RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000000467116
RDX: 0000000000000017 RSI: 0000000000000e0f RDI: 0000000000000e0b
RBP: 000000c000061ec0 R08: 00000000006f6c8f R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000206 R12: 000000c000061950
R13: 000000c00c262800 R14: 000000c0000004e0 R15: 00007f750f568175
 </TASK>