EXT4-fs error (device loop3): ext4_read_inline_dir:1589: inode #12: block 7: comm syz-executor.3: path /root/syzkaller-testdir1225997388/syzkaller.M9PGfP/51/file1/file0: bad entry in directory: rec_len is smaller than minimal - offset=80, inode=0, rec_len=0, size=148 fake=0 ================================================================== BUG: KASAN: use-after-free in __ext4_check_dir_entry+0x700/0x880 fs/ext4/dir.c:85 Read of size 2 at addr ffff888144a38008 by task syz-executor.3/311 CPU: 0 PID: 311 Comm: syz-executor.3 Not tainted 6.1.78-syzkaller-00132-g92704e00b599 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x158/0x4e0 mm/kasan/report.c:427 kasan_report+0x13c/0x170 mm/kasan/report.c:531 __asan_report_load2_noabort+0x14/0x20 mm/kasan/report_generic.c:349 __ext4_check_dir_entry+0x700/0x880 fs/ext4/dir.c:85 empty_inline_dir+0x54f/0xa30 fs/ext4/inline.c:1856 ext4_empty_dir+0x121/0xa10 fs/ext4/namei.c:3079 ext4_rmdir+0x30b/0xad0 fs/ext4/namei.c:3176 vfs_rmdir+0x398/0x500 fs/namei.c:4192 do_rmdir+0x3ab/0x630 fs/namei.c:4253 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4427 [inline] __x64_sys_unlinkat+0xdf/0xf0 fs/namei.c:4427 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe5d387c6c7 Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01