INFO: task segctord:6707 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord        state:D stack:29048 pid:6707  ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6503
 schedule+0xcb/0x190 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 nilfs_transaction_lock+0x246/0x4b0 fs/nilfs2/segment.c:357
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2486 [inline]
 nilfs_segctor_thread+0x593/0x11c0 fs/nilfs2/segment.c:2570
 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: 28 Comm: khungtaskd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xcf5/0xd40 kernel/hung_task.c:377
 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: 3632 Comm: syz-executor.4 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:228 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:240 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:444 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1030 [inline]
RIP: 0010:trace_user_exit+0x79/0x2a0 include/trace/events/context_tracking.h:48
Code: d4 ff 89 db 48 89 d8 48 c1 e8 06 48 8d 3c c5 a8 af 0d 8e be 08 00 00 00 e8 24 e3 28 00 31 f6 48 0f a3 1d a2 c8 5a 0c 0f 92 c3 <40> 0f 92 c6 31 ff e8 ac eb d4 ff 84 db 75 07 e8 c3 e8 d4 ff eb 47
RSP: 0018:ffffc9000480feb8 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81b2e6fc
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e0dafa8
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff1c1b5f6
R10: fffffbfff1c1b5f6 R11: 1ffffffff1c1b5f5 R12: 0000000000000000
R13: 0000000000000101 R14: 0000000000000002 R15: 0000000000000000
FS:  0000555556197400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555561a8888 CR3: 000000002fd01000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ct_user_exit+0x86/0xe0 kernel/context_tracking.c:623
 user_exit_irqoff include/linux/context_tracking.h:48 [inline]
 __enter_from_user_mode kernel/entry/common.c:25 [inline]
 syscall_enter_from_user_mode+0x188/0x1d0 kernel/entry/common.c:108
 do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f03fda3d654
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007fff53238020 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fff53238120 RCX: 00007f03fda3d654
RDX: 0000000000000002 RSI: 00007fff53238160 RDI: 00000000ffffff9c
RBP: 00007fff53238160 R08: 0000000000000000 R09: 00007fff53237f30
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 000000000004a08b R14: 0000000000000010 R15: 00007fff53238160
 </TASK>