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BUG: KASAN: use-after-free in ext4_xattr_delete_inode+0xcd0/0xce0 fs/ext4/xattr.c:2904
Read of size 4 at addr ffff888110e72000 by task syz-executor/555

CPU: 0 PID: 555 Comm: syz-executor Not tainted 5.15.149-syzkaller #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+0x87/0x3a0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x177/0x1c0 mm/kasan/report.c:451
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 ext4_xattr_delete_inode+0xcd0/0xce0 fs/ext4/xattr.c:2904
 ext4_evict_inode+0xe50/0x1490 fs/ext4/inode.c:299
 evict+0x2a3/0x630 fs/inode.c:587
 iput_final fs/inode.c:1705 [inline]
 iput+0x63b/0x7e0 fs/inode.c:1731
 d_delete_notify include/linux/fsnotify.h:248 [inline]
 vfs_rmdir+0x359/0x470 fs/namei.c:4162
 do_rmdir+0x3ab/0x630 fs/namei.c:4210
 __do_sys_unlinkat fs/namei.c:4390 [inline]
 __se_sys_unlinkat fs/namei.c:4384 [inline]
 __x64_sys_unlinkat+0xdf/0xf0 fs/namei.c:4384
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa18930e6c7
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:00007fff022589d8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007fa18930e6c7
RDX: 0000000000000200 RSI: 00007fff02259b80 RDI: 00000000ffffff9c
RBP: 00007fa18935a336 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000207 R12: 00007fff02259b80
R13: 00007fa18935a336 R14: 0000000000009f02 R15: 0000000000000007
 </TASK>

Allocated by task 187:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:513
 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 kmem_cache_alloc_trace+0x115/0x210 mm/slub.c:3247
 kmalloc include/linux/slab.h:591 [inline]
 kernfs_get_open_node fs/kernfs/file.c:552 [inline]
 kernfs_fop_open+0x7ef/0xaa0 fs/kernfs/file.c:698
 do_dentry_open+0x812/0xec0 fs/open.c:826
 vfs_open+0x73/0x80 fs/open.c:956
 do_open fs/namei.c:3608 [inline]
 path_openat+0x26f0/0x2f40 fs/namei.c:3742
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13b/0x500 fs/open.c:1211
 do_sys_open fs/open.c:1227 [inline]
 __do_sys_openat fs/open.c:1243 [inline]
 __se_sys_openat fs/open.c:1238 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1238
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888110e72000
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes inside of
 64-byte region [ffff888110e72000, ffff888110e72040)
The buggy address belongs to the page:
page:ffffea0004439c80 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888110e72800 pfn:0x110e72
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 ffffea000442f380 0000000400000004 ffff888100041640
raw: ffff888110e72800 0000000080200009 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 187, ts 4273282892, free_ts 0
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x15d/0x170 mm/page_alloc.c:2420
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x33e6/0x34c0 mm/page_alloc.c:4159
 __alloc_pages+0x38a/0x7b0 mm/page_alloc.c:5421
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0x92/0x490 mm/slub.c:1975
 ___slab_alloc+0x39e/0x830 mm/slub.c:3008
 __slab_alloc+0x4a/0x90 mm/slub.c:3095
 slab_alloc_node mm/slub.c:3186 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 __kmalloc+0x16d/0x270 mm/slub.c:4403
 __kmalloc_node include/linux/slab.h:457 [inline]
 kmalloc_node include/linux/slab.h:614 [inline]
 kvmalloc_node+0x82/0x130 mm/util.c:619
 kvmalloc include/linux/mm.h:805 [inline]
 simple_xattr_alloc+0x43/0xa0 fs/xattr.c:987
 shmem_initxattrs+0x8d/0x200 mm/shmem.c:3186
 security_inode_init_security+0x252/0x390 security/security.c:1114
 shmem_mknod+0xb8/0x1c0 mm/shmem.c:2858
 shmem_create+0x2c/0x40 mm/shmem.c:2916
 lookup_open fs/namei.c:3462 [inline]
 open_last_lookups fs/namei.c:3532 [inline]
 path_openat+0x13a8/0x2f40 fs/namei.c:3739
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13b/0x500 fs/open.c:1211
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888110e71f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888110e71f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888110e72000: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                   ^
 ffff888110e72080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888110e72100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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