XFS (loop4): Unmounting Filesystem
NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
------------[ cut here ]------------
WARNING: CPU: 1 PID: 23796 at fs/nilfs2/dat.c:151 nilfs_dat_prepare_end.cold+0x11/0x18 fs/nilfs2/dat.c:151
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 23796 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:nilfs_dat_prepare_end.cold+0x11/0x18 fs/nilfs2/dat.c:151
Code: c1 e8 b0 4f 69 f9 48 c7 c7 80 df 9e 88 e8 0f 81 fa ff 0f 0b e9 20 61 b6 fa e8 98 4f 69 f9 48 c7 c7 80 df 9e 88 e8 f7 80 fa ff <0f> 0b e9 1a 66 b6 fa e8 80 4f 69 f9 48 c7 c7 80 df 9e 88 e8 df 80
RSP: 0000:ffff88809d9df530 EFLAGS: 00010282
RAX: 0000000000000024 RBX: ffff88809d9df598 RCX: 0000000000000000
RDX: 0000000000008fbe RSI: ffffffff814dff01 RDI: ffffed1013b3be98
RBP: ffff88804a9229c0 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 00000000fffffffe
R13: ffff88809d9df5b0 R14: ffff88804a9229c0 R15: ffff8880318658c8
 nilfs_bmap_prepare_end_ptr fs/nilfs2/bmap.h:211 [inline]
 nilfs_direct_delete+0x20c/0x2d0 fs/nilfs2/direct.c:155
 nilfs_bmap_do_delete+0x225/0x2e0 fs/nilfs2/bmap.c:176
 nilfs_bmap_do_truncate fs/nilfs2/bmap.c:264 [inline]
 nilfs_bmap_truncate+0x109/0x300 fs/nilfs2/bmap.c:297
 nilfs_truncate_bmap+0x13d/0x350 fs/nilfs2/inode.c:710
 nilfs_truncate+0x26f/0x4e0 fs/nilfs2/inode.c:741
 nilfs_setattr+0x246/0x2a0 fs/nilfs2/inode.c:835
 notify_change+0x70b/0xfc0 fs/attr.c:334
 do_truncate+0x134/0x1f0 fs/open.c:63
 handle_truncate fs/namei.c:3009 [inline]
 do_last fs/namei.c:3427 [inline]
 path_openat+0x2308/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f88c6fca0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f88c553c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f88c70e9f80 RCX: 00007f88c6fca0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f88c7025ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeaff3385f R14: 00007f88c553c300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..