==================================================================
BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:209 [inline]
BUG: KASAN: use-after-free in ext4_read_inline_dir+0x435/0xd90 fs/ext4/inline.c:1523
Read of size 68 at addr ffff88812ca1ad05 by task syz-executor/465

CPU: 0 PID: 465 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0xe2/0x130 mm/kasan/report.c:452
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x280/0x290 mm/kasan/generic.c:189
 memcpy+0x2d/0x70 mm/kasan/shadow.c:65
 ext4_read_inline_data fs/ext4/inline.c:209 [inline]
 ext4_read_inline_dir+0x435/0xd90 fs/ext4/inline.c:1523
 ext4_readdir+0x380/0x39b0 fs/ext4/dir.c:161
 iterate_dir+0x260/0x570 fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64+0xe5/0x240 fs/readdir.c:354
 __x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f342ae07193
Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 42 43 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:00007ffee89aa0a8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 000055559189d520 RCX: 00007f342ae07193
RDX: 0000000000008000 RSI: 000055559189d520 RDI: 0000000000000006
RBP: 000055559189d4f4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8
R13: 0000000000000016 R14: 000055559189d4f0 R15: 00007ffee89ad440

The buggy address belongs to the page:
page:ffffea0004b28680 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x12ca1a
flags: 0x4000000000000000()
raw: 4000000000000000 ffffea0004b286c8 ffffea0004b28648 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:
 ffff88812ca1ac00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88812ca1ac80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88812ca1ad00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88812ca1ad80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88812ca1ae00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop1): ext4_read_inline_dir:1604: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0
EXT4-fs error (device loop1): ext4_read_inline_dir:1604: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0
EXT4-fs error (device loop1): empty_inline_dir:1858: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=1633771873, rec_len=24929, size=60 fake=0
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs error (device loop1): ext4_read_inline_dir:1604: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0
EXT4-fs error (device loop1): ext4_read_inline_dir:1604: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0
EXT4-fs error (device loop1): empty_inline_dir:1858: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=1633771873, rec_len=24929, size=60 fake=0
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs error (device loop1): ext4_read_inline_dir:1604: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0
EXT4-fs error (device loop1): ext4_read_inline_dir:1604: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0
EXT4-fs error (device loop1): empty_inline_dir:1858: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=1633771873, rec_len=24929, size=60 fake=0
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60
EXT4-fs warning (device loop1): empty_inline_dir:1865: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60