NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=56, inode=212147896334, rec_len=0, name_len=0
Remounting filesystem read-only
NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
BTRFS error (device loop4): superblock checksum mismatch
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kernel BUG at kernel/time/timer.c:939!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 9717 Comm: syz-executor.0 Not tainted 4.14.296-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
task: ffff8880a1b822c0 task.stack: ffff888046a00000
RIP: 0010:__mod_timer kernel/time/timer.c:939 [inline]
RIP: 0010:mod_timer+0x7fd/0xf70 kernel/time/timer.c:1070
RSP: 0018:ffff888046a07b48 EFLAGS: 00010216
RAX: 0000000000040000 RBX: 00000000ffffdc4c RCX: ffffc90005bde000
RDX: 0000000000033c25 RSI: ffffffff81489b4d RDI: ffff8880a9fab930
RBP: ffff8880a9fab918 R08: ffff8880a9fab800 R09: 0000000000040705
R10: ffff8880a1b82be8 R11: ffff8880a1b822c0 R12: dffffc0000000000
R13: 1ffff11008d40f71 R14: ffff8880a9fab680 R15: ffff888046a07c8a
FS:  00007f50a64cc700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2de24000 CR3: 0000000096833000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nilfs_segctor_start_timer fs/nilfs2/segment.c:2139 [inline]
 nilfs_transaction_commit+0x6b4/0xae0 fs/nilfs2/segment.c:288
 nilfs_evict_inode+0x2be/0x3a0 fs/nilfs2/inode.c:967
 evict+0x2c8/0x700 fs/inode.c:554
 iput_final fs/inode.c:1523 [inline]
 iput+0x458/0x7e0 fs/inode.c:1550
 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:387
 d_delete+0x1c5/0x280 fs/dcache.c:2417
 vfs_rmdir.part.0+0x260/0x390 fs/namei.c:3922
 vfs_rmdir fs/namei.c:3895 [inline]
 do_rmdir+0x334/0x3c0 fs/namei.c:3970
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f50a7f595a9
RSP: 002b:00007f50a64cc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f50a8079f80 RCX: 00007f50a7f595a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f50a7fb47b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdf3111b8f R14: 00007f50a64cc300 R15: 0000000000022000
Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 66 06 00 00 48 89 5d 10 4c 89 64 24 10 c7 44 24 08 01 00 00 00 e9 db fc ff ff e8 73 ac 0c 00 <0f> 0b e8 6c ac 0c 00 8b 5c 24 0c 48 b8 00 00 00 00 00 fc ff df 
RIP: __mod_timer kernel/time/timer.c:939 [inline] RSP: ffff888046a07b48
RIP: mod_timer+0x7fd/0xf70 kernel/time/timer.c:1070 RSP: ffff888046a07b48
---[ end trace 8939ff822381f5eb ]---