loop0: detected capacity change from 0 to 33280
EXT4-fs (loop0): mounting ext3 file system using the ext4 subsystem
EXT4-fs (loop0): 1 truncate cleaned up
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
loop0: detected capacity change from 33280 to 33275
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767
Read of size 18446744073709551600 at addr ffff888023e712b8 by task syz.0.0/5352

CPU: 0 UID: 0 PID: 5352 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_nolock+0x208/0x980 fs/ext4/inline.c:1132
 ext4_convert_inline_data+0x484/0x5c0 fs/ext4/inline.c:2012
 ext4_setattr+0xef2/0x1550 fs/ext4/inode.c:7104
 notify_change+0xbba/0xea0 fs/attr.c:556
 do_truncate+0x1c2/0x250 fs/open.c:68
 vfs_truncate+0x4b7/0x540 fs/open.c:118
 ksys_truncate+0xf3/0x1c0 fs/open.c:142
 __do_sys_truncate fs/open.c:154 [inline]
 __se_sys_truncate fs/open.c:152 [inline]
 __x64_sys_truncate+0x5b/0x70 fs/open.c:152
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x16a/0x530 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbcc97a94d9
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:00007fbcca67afe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fbcc9a25fa0 RCX: 00007fbcc97a94d9
RDX: 0000000000000000 RSI: 000000000000979e RDI: 0000200000000840
RBP: 00007fbcc983804e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbcc9a26038 R14: 00007fbcc9a25fa0 R15: 00007ffd0c7e2558
 </TASK>

The buggy address belongs to the physical page:
page: refcount:3 mapcount:0 mapping:ffff88801e825940 index:0x2 pfn:0x23e71
memcg:ffff8880400e5600
aops:def_blk_aops ino:700000 dentry name(?):""
flags: 0xfff18000000204(referenced|workingset|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000000204 0000000000000000 dead000000000122 ffff88801e825940
raw: 0000000000000002 ffff8880144019a0 00000003ffffffff ffff8880400e5600
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 5352, tgid 5351 (syz.0.0), ts 103786727427
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1860
 prep_new_page mm/page_alloc.c:1868 [inline]
 get_page_from_freelist+0x225d/0x22e0 mm/page_alloc.c:3950
 __alloc_frozen_pages_noprof+0x211/0x450 mm/page_alloc.c:5492
 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2513
 alloc_frozen_pages_noprof mm/mempolicy.c:2584 [inline]
 alloc_pages_noprof+0xb1/0x2b0 mm/mempolicy.c:2604
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2614
 filemap_alloc_folio_noprof+0x111/0x460 mm/filemap.c:1017
 __filemap_get_folio_mpol+0x3fd/0xff0 mm/filemap.c:2047
 __filemap_get_folio include/linux/pagemap.h:758 [inline]
 grow_dev_folio fs/buffer.c:868 [inline]
 grow_buffers fs/buffer.c:934 [inline]
 __getblk_slow fs/buffer.c:952 [inline]
 bdev_getblk+0x1ec/0x670 fs/buffer.c:1362
 __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:5709
 ext4_get_inode_loc+0x81/0xf0 fs/ext4/inode.c:5837
 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:2209
page last free pid 5352 tgid 5351 ts 103722139932 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1402 [inline]
 free_unref_folios+0xdcc/0x15d0 mm/page_alloc.c:3018
 folios_put_refs+0x9e9/0xb30 mm/folio.c:1039
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x55a/0x1730 mm/shmem.c:1377
 shmem_truncate_range mm/shmem.c:1513 [inline]
 shmem_evict_inode+0x240/0xb00 mm/shmem.c:1657
 evict+0x6bf/0xc20 fs/inode.c:829
 dentry_kill+0x1b9/0x910 fs/dcache.c:857
 finish_dput+0x1a/0x260 fs/dcache.c:1032
 __fput+0x65b/0xa40 fs/file_table.c:520
 fput_close_sync+0x11f/0x240 fs/file_table.c:618
 filp_close_sync fs/open.c:1574 [inline]
 __do_sys_close fs/open.c:1597 [inline]
 __se_sys_close+0xa2/0x160 fs/open.c:1584
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x16a/0x530 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888023e71180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888023e71200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888023e71280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff888023e71300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888023e71380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================