IPVS: ftp: loaded support on port[0] = 21
NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8032 at fs/nilfs2/dat.c:195 nilfs_dat_commit_end+0x469/0x5c0 fs/nilfs2/dat.c:195
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8032 Comm: segctord Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:nilfs_dat_commit_end+0x469/0x5c0 fs/nilfs2/dat.c:195
RSP: 0018:ffff8880959a78c0 EFLAGS: 00010297
RAX: ffff8880b3248340 RBX: ffff8880999c9a40 RCX: 1ffff11013510dc9
RDX: 0000000000000000 RSI: 0000000000000012 RDI: ffff88809a8877b8
RBP: ffff8880959a7968 R08: ffff88808d67f7c0 R09: 0000000000000002
R10: 0000000000000000 R11: ffff8880b3248340 R12: ffff88808d67c9c8
R13: ffff8880959a7980 R14: 0000000000000003 R15: 000023d50af30002
 nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:245
 nilfs_direct_propagate fs/nilfs2/direct.c:286 [inline]
 nilfs_direct_propagate+0x1d4/0x270 fs/nilfs2/direct.c:265
 nilfs_bmap_propagate+0x73/0x160 fs/nilfs2/bmap.c:346
 nilfs_collect_file_data+0x41/0xb0 fs/nilfs2/segment.c:582
 nilfs_segctor_apply_buffers+0x191/0x450 fs/nilfs2/segment.c:1027
 nilfs_segctor_scan_file+0x366/0x630 fs/nilfs2/segment.c:1076
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1183 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1507 [inline]
 nilfs_segctor_do_construct+0x20f0/0x78d0 fs/nilfs2/segment.c:2049
 nilfs_segctor_construct+0x6db/0x8e0 fs/nilfs2/segment.c:2385
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2493 [inline]
 nilfs_segctor_thread+0x3ad/0xdb0 fs/nilfs2/segment.c:2577
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..