==================================================================
BUG: KASAN: use-after-free in ext4_search_dir+0xf7/0x1b0 fs/ext4/namei.c:1543
Read of size 1 at addr ffff88811f1cf6e3 by task syz-executor680/301

CPU: 1 PID: 301 Comm: syz-executor680 Not tainted 5.15.149-syzkaller-00490-g5d96939590c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
 ext4_search_dir+0xf7/0x1b0 fs/ext4/namei.c:1543
 ext4_find_inline_entry+0x4b6/0x5e0 fs/ext4/inline.c:1714
 __ext4_find_entry+0x2b0/0x1af0 fs/ext4/namei.c:1616
 ext4_lookup_entry fs/ext4/namei.c:1771 [inline]
 ext4_lookup+0x3c6/0xaa0 fs/ext4/namei.c:1839
 lookup_open fs/namei.c:3440 [inline]
 open_last_lookups fs/namei.c:3532 [inline]
 path_openat+0x1194/0x2f40 fs/namei.c:3739
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13f/0x830 fs/open.c:1234
 do_sys_open fs/open.c:1250 [inline]
 __do_sys_openat fs/open.c:1266 [inline]
 __se_sys_openat fs/open.c:1261 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1261
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f98132627c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1b 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:00007fff8c21e328 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f98132627c9
RDX: 000000000000275a RSI: 0000000020000280 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 00007fff8c21e5c0 R09: 00007fff8c21e5c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8c21e5c0
R13: 0000000000000000 R14: 431bde82d7b634db R15: 00007fff8c21e390
 </TASK>

The buggy address belongs to the page:
page:ffffea00047c73c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x11f1cf
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea00047c7408 ffffea00047c7388 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffff88811f1cf580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811f1cf600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88811f1cf680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                       ^
 ffff88811f1cf700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811f1cf780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop3): ext4_find_dest_de:2112: inode #12: block 5: comm syz-executor680: bad entry in directory: rec_len % 4 != 0 - offset=0, inode=1375716473, rec_len=40042, size=56 fake=0