EXT4-fs error (device loop0): ext4_find_dest_de:2052: inode #2: block 13: comm syz.0.0: bad entry in directory: directory entry overrun - offset=92, inode=0, rec_len=1024, size=1024 fake=0
EXT4-fs error (device loop0): ext4_validate_block_bitmap:436: comm syz.0.0: bg 0: block 18: invalid block bitmap
EXT4-fs error (device loop0) in ext4_mb_clear_bb:6678: Corrupt filesystem
EXT4-fs error (device loop0): ext4_read_inode_bitmap:141: comm syz.0.0: Invalid inode bitmap blk 65548 in block_group 0
EXT4-fs error (device loop0) in ext4_free_inode:363: Corrupt filesystem
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BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767
Read of size 18446744073709551600 at addr ffff888053e1d6b8 by task syz.0.0/5349

CPU: 0 UID: 0 PID: 5349 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200
 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94
 ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767
 ext4_xattr_ibody_set+0x262/0x710 fs/ext4/xattr.c:2277
 ext4_destroy_inline_data_nolock+0x23a/0x5f0 fs/ext4/inline.c:471
 ext4_convert_inline_data_to_extent+0x549/0xde0 fs/ext4/inline.c:630
 ext4_write_begin+0x3bd/0x1900 fs/ext4/inode.c:1432
 generic_perform_write+0x2d5/0x8e0 mm/filemap.c:4392
 ext4_buffered_write_iter+0x139/0x540 fs/ext4/file.c:372
 ext4_file_write_iter+0xae4/0x1cd0 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_pwrite64 fs/read_write.c:794 [inline]
 __do_sys_pwrite64 fs/read_write.c:802 [inline]
 __se_sys_pwrite64 fs/read_write.c:799 [inline]
 __x64_sys_pwrite64+0x210/0x2c0 fs/read_write.c:799
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f934419fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9344fedfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f9344426090 RCX: 00007f934419fb19
RDX: 000000000000fdef RSI: 0000200000000f00 RDI: 0000000000000009
RBP: 00007f9344237b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010c6b R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9344426128 R14: 00007f9344426090 R15: 00007ffe7ca8aff8
 </TASK>

The buggy address belongs to the physical page:
page: refcount:2 mapcount:0 mapping:ffff88801e825940 index:0xc pfn:0x53e1d
memcg:ffff88803bedd700
aops:def_blk_aops ino:700000 dentry name(?):""
flags: 0x4fff58000000234(referenced|dirty|lru|workingset|node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff58000000234 ffffea00014f6508 ffffea00014f8708 ffff88801e825940
raw: 000000000000000c ffff8880454aaa80 00000002ffffffff ffff88803bedd700
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_MOVABLE|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL), pid 5349, tgid 5347 (syz.0.0), ts 94457062055
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1856
 prep_new_page mm/page_alloc.c:1864 [inline]
 get_page_from_freelist+0x220f/0x2280 mm/page_alloc.c:3935
 __alloc_frozen_pages_noprof+0x1fe/0x410 mm/page_alloc.c:5444
 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2511
 alloc_frozen_pages_noprof mm/mempolicy.c:2582 [inline]
 alloc_pages_noprof+0xb1/0x2b0 mm/mempolicy.c:2602
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2612
 filemap_alloc_folio_noprof+0x111/0x460 mm/filemap.c:1018
 __filemap_get_folio_mpol+0x3fd/0xff0 mm/filemap.c:2036
 __filemap_get_folio include/linux/pagemap.h:758 [inline]
 grow_dev_folio fs/buffer.c:856 [inline]
 grow_buffers fs/buffer.c:922 [inline]
 __getblk_slow fs/buffer.c:940 [inline]
 bdev_getblk+0x1ec/0x670 fs/buffer.c:1350
 __getblk include/linux/buffer_head.h:436 [inline]
 sb_getblk include/linux/buffer_head.h:442 [inline]
 __ext4_get_inode_loc+0x56c/0xf40 fs/ext4/inode.c:5738
 ext4_get_inode_loc fs/ext4/inode.c:5866 [inline]
 ext4_reserve_inode_write+0x18b/0x360 fs/ext4/inode.c:7448
 __ext4_mark_inode_dirty+0x141/0x7e0 fs/ext4/inode.c:7642
 ext4_mkdir+0x4ea/0xce0 fs/ext4/namei.c:3027
 vfs_mkdir+0x411/0x660 fs/namei.c:5428
 filename_mkdirat+0x284/0x550 fs/namei.c:5461
 __do_sys_mkdirat fs/namei.c:5482 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5479
page last free pid 5349 tgid 5347 ts 94453788605 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1403 [inline]
 free_unref_folios+0xdc6/0x14e0 mm/page_alloc.c:3014
 folios_put_refs+0x9e9/0xb30 mm/folio.c:1039
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x547/0x15d0 mm/shmem.c:1371
 shmem_truncate_range mm/shmem.c:1496 [inline]
 shmem_evict_inode+0x240/0xb00 mm/shmem.c:1627
 evict+0x624/0xb50 fs/inode.c:821
 dentry_kill+0x1b9/0x910 fs/dcache.c:862
 finish_dput+0x1a/0x260 fs/dcache.c:1037
 __fput+0x65b/0xa40 fs/file_table.c:520
 fput_close_sync+0x11f/0x240 fs/file_table.c:618
 filp_close_sync fs/open.c:1573 [inline]
 __do_sys_close fs/open.c:1596 [inline]
 __se_sys_close+0xa2/0x160 fs/open.c:1583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888053e1d580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888053e1d600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888053e1d680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff888053e1d700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888053e1d780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================