==================================================================
BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:209 [inline]
BUG: KASAN: use-after-free in ext4_convert_inline_data_nolock+0x319/0xda0 fs/ext4/inline.c:1223
Read of size 68 at addr ffff888123bb70cf by task syz-executor/602

CPU: 1 PID: 602 Comm: syz-executor Not tainted 5.15.149-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description+0x87/0x3a0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x177/0x1c0 mm/kasan/report.c:451
 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189
 memcpy+0x2d/0x70 mm/kasan/shadow.c:65
 ext4_read_inline_data fs/ext4/inline.c:209 [inline]
 ext4_convert_inline_data_nolock+0x319/0xda0 fs/ext4/inline.c:1223
 ext4_try_add_inline_entry+0x7ff/0xb60 fs/ext4/inline.c:1349
 ext4_add_entry+0x6c2/0x12b0 fs/ext4/namei.c:2409
 ext4_mkdir+0x54f/0xce0 fs/ext4/namei.c:3032
 vfs_mkdir+0x3f6/0x610 fs/namei.c:4065
 do_mkdirat+0x1eb/0x450 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4103
 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: 0033:0x7fda48e169e7
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 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fda48978ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fda48978f80 RCX: 00007fda48e169e7
RDX: 00000000000001ff RSI: 0000000020000580 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000580
R13: 00007fda48978f40 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

The buggy address belongs to the page:
page:ffffea00048eedc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x123bb7
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea00048eee08 ffffea00048eed88 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x1100dca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO), pid 593, ts 42397489275, free_ts 42398034451
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x15d/0x170 mm/page_alloc.c:2420
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x33e6/0x34c0 mm/page_alloc.c:4159
 __alloc_pages+0x38a/0x7b0 mm/page_alloc.c:5421
 __alloc_pages_node include/linux/gfp.h:570 [inline]
 alloc_pages_node include/linux/gfp.h:584 [inline]
 alloc_pages include/linux/gfp.h:597 [inline]
 wp_page_copy+0x1dd/0x16b0 mm/memory.c:3021
 do_wp_page+0x66c/0xa90
 handle_pte_fault mm/memory.c:4639 [inline]
 __handle_mm_fault mm/memory.c:4756 [inline]
 handle_mm_fault+0x1f28/0x4350 mm/memory.c:4854
 do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
 handle_page_fault arch/x86/mm/fault.c:1485 [inline]
 exc_page_fault+0x23a/0x610 arch/x86/mm/fault.c:1541
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:568
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1413 [inline]
 free_unref_page_prepare+0x7a9/0x7e0 mm/page_alloc.c:3317
 free_unref_page_list+0x1aa/0x6d0 mm/page_alloc.c:3433
 release_pages+0xe33/0xe90 mm/swap.c:963
 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:320
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x177/0x320 mm/mmu_gather.c:338
 unmap_region+0x304/0x350 mm/mmap.c:2668
 __do_munmap+0x142d/0x1ae0 mm/mmap.c:2899
 __vm_munmap+0x131/0x230 mm/mmap.c:2922
 __do_sys_munmap mm/mmap.c:2948 [inline]
 __se_sys_munmap mm/mmap.c:2944 [inline]
 __x64_sys_munmap+0x6b/0x80 mm/mmap.c:2944
 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

Memory state around the buggy address:
 ffff888123bb6f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888123bb7000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888123bb7080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff888123bb7100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888123bb7180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop0): ext4_check_all_de:656: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, size=124 fake=0