EXT4-fs error (device loop3): ext4_readdir:260: inode #2: block 36: comm syz-executor: path /21/file0: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, size=1024 fake=0
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kernel BUG at fs/ext4/inode.c:5246!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8706 Comm: syz-executor Not tainted 5.10.222-syzkaller-01494-gfd58936f3c1f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5245 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x3e51/0x3e60 fs/ext4/inode.c:5841
Code: 6d ca ff e9 0f f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 21 f1 ff ff 48 89 df e8 79 6e ca ff e9 14 f1 ff ff e8 1f d6 8c ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 57 41
RSP: 0018:ffffc90000b679a0 EFLAGS: 00010293
RAX: ffffffff81ddd2e1 RBX: 0000000000000000 RCX: ffff888133c3bb40
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc90000b67ab0 R08: ffffffff81ddaefd R09: ffffed10220d9ced
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 00000000ffffffff R14: 0000000000000000 R15: ffff888130d10000
FS:  0000555556abb500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556ade4e8 CR3: 000000011bac5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __ext4_mark_inode_dirty+0x4fc/0x7b0 fs/ext4/inode.c:6043
 ext4_dirty_inode+0xdd/0x120 fs/ext4/inode.c:6079
 __mark_inode_dirty+0xd0/0x9d0 fs/fs-writeback.c:2252
 generic_update_time fs/inode.c:1807 [inline]
 inode_update_time fs/inode.c:1820 [inline]
 touch_atime+0x2ff/0x4c0 fs/inode.c:1892
 file_accessed include/linux/fs.h:2345 [inline]
 iterate_dir+0x4a0/0x580 fs/readdir.c:70
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0x1c1/0x460 fs/readdir.c:354
 __x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1ec09db333
Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 02 45 f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8
RSP: 002b:00007ffcd4a17288 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000555556ad64e0 RCX: 00007f1ec09db333
RDX: 0000000000008000 RSI: 0000555556ad64e0 RDI: 0000000000000005
RBP: 0000555556ad64b4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8
R13: 0000000000000010 R14: 0000555556ad64b0 R15: 00007ffcd4a19530
Modules linked in:
---[ end trace ca2afdde72ccc86b ]---
RIP: 0010:ext4_do_update_inode fs/ext4/inode.c:5245 [inline]
RIP: 0010:ext4_mark_iloc_dirty+0x3e51/0x3e60 fs/ext4/inode.c:5841
Code: 6d ca ff e9 0f f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 21 f1 ff ff 48 89 df e8 79 6e ca ff e9 14 f1 ff ff e8 1f d6 8c ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 57 41
RSP: 0018:ffffc90000b679a0 EFLAGS: 00010293
RAX: ffffffff81ddd2e1 RBX: 0000000000000000 RCX: ffff888133c3bb40
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc90000b67ab0 R08: ffffffff81ddaefd R09: ffffed10220d9ced
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 00000000ffffffff R14: 0000000000000000 R15: ffff888130d10000
FS:  0000555556abb500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556ade4e8 CR3: 000000011bac5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400