==================================================================
BUG: KASAN: use-after-free in ext4_xattr_delete_inode+0xcd0/0xce0 fs/ext4/xattr.c:2905
Read of size 4 at addr ffff88812557e000 by task syz-executor.1/18618

CPU: 1 PID: 18618 Comm: syz-executor.1 Tainted: G        W          6.1.78-syzkaller-00001-gec795e4eaa8a #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 mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 ext4_xattr_delete_inode+0xcd0/0xce0 fs/ext4/xattr.c:2905
 ext4_evict_inode+0xef9/0x1550 fs/ext4/inode.c:296
 evict+0x2a3/0x630 fs/inode.c:666
 iput_final fs/inode.c:1791 [inline]
 iput+0x642/0x870 fs/inode.c:1817
 d_delete_notify include/linux/fsnotify.h:284 [inline]
 vfs_rmdir+0x3c2/0x500 fs/namei.c:4205
 do_rmdir+0x3ab/0x630 fs/namei.c:4253
 __do_sys_unlinkat fs/namei.c:4433 [inline]
 __se_sys_unlinkat fs/namei.c:4427 [inline]
 __x64_sys_unlinkat+0xdf/0xf0 fs/namei.c:4427
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f930227c747
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 07 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:00007ffde18e0558 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f930227c747
RDX: 0000000000000200 RSI: 00007ffde18e1700 RDI: 00000000ffffff9c
RBP: 00007f93022d9636 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffde18e1700
R13: 00007f93022d9636 R14: 0000000000086418 R15: 0000000000000007
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0004955f80 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x12557e
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffff8881f703bb68 ffffea0004932448 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 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 21175, tgid 21174 (syz-executor.4), ts 534855097563, free_ts 536934582142
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2597
 get_page_from_freelist+0x27ea/0x2870 mm/page_alloc.c:4425
 __alloc_pages+0x3a1/0x780 mm/page_alloc.c:5712
 __folio_alloc+0x15/0x40 mm/page_alloc.c:5744
 __folio_alloc_node include/linux/gfp.h:245 [inline]
 folio_alloc include/linux/gfp.h:274 [inline]
 shmem_alloc_folio mm/shmem.c:1597 [inline]
 shmem_alloc_and_acct_folio+0x78c/0xa50 mm/shmem.c:1622
 shmem_get_folio_gfp+0x12d4/0x24b0 mm/shmem.c:1950
 shmem_get_folio mm/shmem.c:2081 [inline]
 shmem_write_begin+0x164/0x3a0 mm/shmem.c:2569
 generic_perform_write+0x2f9/0x5c0 mm/filemap.c:3838
 __generic_file_write_iter+0x174/0x3a0 mm/filemap.c:3966
 generic_file_write_iter+0xb1/0x310 mm/filemap.c:3998
 call_write_iter include/linux/fs.h:2258 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x902/0xeb0 fs/read_write.c:584
 ksys_write+0x199/0x2c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1498 [inline]
 free_pcp_prepare mm/page_alloc.c:1572 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
 free_unref_page_list+0xf1/0x7b0 mm/page_alloc.c:3646
 release_pages+0xf7f/0xfe0 mm/swap.c:1063
 __pagevec_release+0x84/0x100 mm/swap.c:1083
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 shmem_undo_range+0x5fc/0x1660 mm/shmem.c:951
 shmem_truncate_range mm/shmem.c:1067 [inline]
 shmem_evict_inode+0x25f/0xa30 mm/shmem.c:1176
 evict+0x2a3/0x630 fs/inode.c:666
 iput_final fs/inode.c:1791 [inline]
 iput+0x642/0x870 fs/inode.c:1817
 dentry_unlink_inode+0x34f/0x440 fs/dcache.c:401
 __dentry_kill+0x447/0x650 fs/dcache.c:607
 dentry_kill+0xc0/0x2a0
 dput+0x40/0x80 fs/dcache.c:914
 __fput+0x5f0/0x870 fs/file_table.c:328
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x24d/0x2e0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:171

Memory state around the buggy address:
 ffff88812557df00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88812557df80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88812557e000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88812557e080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88812557e100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs (loop1): unmounting filesystem.