loop0: detected capacity change from 0 to 2048
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
loop0: detected capacity change from 2048 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 ffff888053faceb8 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_destroy_inline_data+0x83/0xe0 fs/ext4/inline.c:1824
 ext4_do_writepages+0x57f/0x44a0 fs/ext4/inode.c:2956
 ext4_writepages+0x1fe/0x4e0 fs/ext4/inode.c:3171
 do_writepages+0x338/0x560 mm/page-writeback.c:2560
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x36e/0x440 mm/filemap.c:786
 ext4_sync_file+0x252/0xa40 fs/ext4/fsync.c:145
 generic_write_sync include/linux/fs.h:2695 [inline]
 ext4_buffered_write_iter+0x471/0x540 fs/ext4/file.c:378
 ext4_file_write_iter+0xae4/0x1cd0 fs/ext4/file.c:-1
 aio_write+0x5cb/0x870 fs/aio.c:1697
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x798/0x13d0 fs/aio.c:2121
 __do_sys_io_submit fs/aio.c:2180 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2150
 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: 0033:0x7f8cf039fb19
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:00007f8cec7f4fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f8cf0625fa0 RCX: 00007f8cf039fb19
RDX: 0000200000015a40 RSI: 0000000000000001 RDI: 00007f8cf115e000
RBP: 00007f8cf0437af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8cf0626038 R14: 00007f8cf0625fa0 R15: 00007ffc787ee008
 </TASK>

The buggy address belongs to the physical page:
page: refcount:2 mapcount:0 mapping:ffff88801e825940 index:0x2 pfn:0x53fac
memcg:ffff8880450e1300
aops:def_blk_aops ino:700000 dentry name(?):""
flags: 0x4fff58000000234(referenced|dirty|lru|workingset|node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff58000000234 ffffea0001144fc8 ffffea0001031008 ffff88801e825940
raw: 0000000000000002 ffff888045950b60 00000002ffffffff ffff8880450e1300
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 93851488120
 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+0x81/0xf0 fs/ext4/inode.c:5866
 ext4_xattr_ibody_get+0x113/0x4b0 fs/ext4/xattr.c:659
 ext4_xattr_get+0x121/0x690 fs/ext4/xattr.c:720
 __vfs_getxattr+0x412/0x440 fs/xattr.c:446
 cap_inode_need_killpriv+0x45/0x60 security/commoncap.c:331
 security_inode_need_killpriv+0x85/0x240 security/security.c:2208
page last free pid 5295 tgid 5295 ts 93851099846 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
 end_renaming fs/namei.c:4128 [inline]
 filename_renameat2+0x639/0x9f0 fs/namei.c:6346
 __do_sys_rename fs/namei.c:6388 [inline]
 __se_sys_rename+0x55/0x2c0 fs/namei.c:6384
 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:
 ffff888053facd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888053face00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888053face80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff888053facf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888053facf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================