loop0: detected capacity change from 0 to 512
EXT4-fs: Ignoring removed i_version option
EXT4-fs: Ignoring removed oldalloc option
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
loop0: detected capacity change from 512 to 64
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767
Read of size 18446744073709551600 at addr ffff8880138dad24 by task syz.0.0/5340

CPU: 0 UID: 0 PID: 5340 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
 ext4_da_write_begin+0x46a/0xd70 fs/ext4/inode.c:3281
 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
 aio_write+0x5cb/0x870 fs/aio.c:1687
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x798/0x13d0 fs/aio.c:2111
 __do_sys_io_submit fs/aio.c:2170 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2140
 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: 0033:0x7f035399f559
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:00007f035489bfe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f0353c25fa0 RCX: 00007f035399f559
RDX: 000020000003bd40 RSI: 0000000000000001 RDI: 00007f035485a000
RBP: 00007f0353a36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0353c26038 R14: 00007f0353c25fa0 R15: 00007ffe6d897108
 </TASK>

The buggy address belongs to the physical page:
page: refcount:3 mapcount:0 mapping:ffff88801e425940 index:0x5 pfn:0x138da
memcg:ffff888045d86900
aops:def_blk_aops ino:700000 dentry name(?):""
flags: 0xfff18000000214(referenced|dirty|workingset|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000000214 0000000000000000 dead000000000122 ffff88801e425940
raw: 0000000000000005 ffff8880458ca8c0 00000003ffffffff ffff888045d86900
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 5340, tgid 5339 (syz.0.0), ts 95576703105
 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:7442
 __ext4_mark_inode_dirty+0x141/0x7e0 fs/ext4/inode.c:7636
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:7673
 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2741
 generic_update_time fs/inode.c:2252 [inline]
 file_update_time_flags+0x399/0x440 fs/inode.c:2482
 ext4_write_checks+0x9f/0x220 fs/ext4/file.c:312
page last free pid 5340 tgid 5339 ts 95539937972 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:822
 dentry_kill+0x1b9/0x910 fs/dcache.c:840
 finish_dput+0x1a/0x260 fs/dcache.c:1015
 __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:
 ffff8880138dac00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880138dac80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880138dad00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                               ^
 ffff8880138dad80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880138dae00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================