NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
Remounting filesystem read-only
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7986 at include/linux/backing-dev.h:335 inode_to_wb include/linux/backing-dev.h:335 [inline]
WARNING: CPU: 1 PID: 7986 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 7986 Comm: syz-executor142 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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:inode_to_wb include/linux/backing-dev.h:335 [inline]
RIP: 0010:account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
RSP: 0018:ffff88808ca3f2e0 EFLAGS: 00010097
RAX: ffff888096324480 RBX: ffff8880aec4e280 RCX: 1ffffffff127a5d4
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086
RBP: ffff88808dbcf4b8 R08: ffffffff8b9c5098 R09: 00000000000c023a
R10: ffff888096324df8 R11: ffff888096324480 R12: ffffea0002cc8100
R13: ffff88808dbcf328 R14: ffff88808dbcf328 R15: ffffea0002cc8120
 __set_page_dirty+0x77/0x2a0 fs/buffer.c:634
 mark_buffer_dirty+0x307/0x480 fs/buffer.c:1173
 nilfs_btree_commit_convert_and_insert fs/nilfs2/btree.c:1821 [inline]
 nilfs_btree_convert_and_insert+0xd33/0x1070 fs/nilfs2/btree.c:1886
 nilfs_bmap_do_insert fs/nilfs2/bmap.c:120 [inline]
 nilfs_bmap_insert+0x242/0x380 fs/nilfs2/bmap.c:156
 nilfs_mdt_insert_new_block fs/nilfs2/mdt.c:53 [inline]
 nilfs_mdt_create_block fs/nilfs2/mdt.c:102 [inline]
 nilfs_mdt_get_block+0x4a1/0xb90 fs/nilfs2/mdt.c:263
 nilfs_palloc_get_block+0xb2/0x250 fs/nilfs2/alloc.c:225
 nilfs_palloc_get_desc_block fs/nilfs2/alloc.c:274 [inline]
 nilfs_palloc_prepare_alloc_entry+0x235/0x950 fs/nilfs2/alloc.c:533
 nilfs_ifile_create_inode+0x74/0x1e0 fs/nilfs2/ifile.c:73
 nilfs_new_inode+0x1c4/0x6f0 fs/nilfs2/inode.c:362
 nilfs_create fs/nilfs2/namei.c:94 [inline]
 nilfs_create+0xd2/0x2a0 fs/nilfs2/namei.c:84
 lookup_open+0x77a/0x1750 fs/namei.c:3241
 do_last fs/namei.c:3334 [inline]
 path_openat+0xe08/0x2970 fs/namei.c:3571
 do_filp_open+0x179/0x3c0 fs/namei.c:3605
 do_sys_open+0x296/0x410 fs/open.c:1081
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fde09840309
RSP: 002b:00007ffe1a7b9ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fde09840309
RDX: 00007fde097fe8a3 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007fde097ffb70 R08: 0000555555ad22c0 R09: 0000000000000000
R10: 00007ffe1a7b9b70 R11: 0000000000000246 R12: 00007fde097ffc00
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..