==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1277/0x3a90 fs/ext4/xattr.c:1747
Read of size 18446744073709551572 at addr ffff8881200632e8 by task syz-executor.0/740

CPU: 1 PID: 740 Comm: syz-executor.0 Not tainted 5.10.222-syzkaller-1003210-gfd58936f3c1f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:452
 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189
 memmove+0x2d/0x70 mm/kasan/shadow.c:54
 ext4_xattr_set_entry+0x1277/0x3a90 fs/ext4/xattr.c:1747
 ext4_xattr_ibody_set+0x124/0x390 fs/ext4/xattr.c:2228
 ext4_xattr_set_handle+0xc26/0x14e0 fs/ext4/xattr.c:2385
 ext4_xattr_set+0x231/0x3d0 fs/ext4/xattr.c:2498
 ext4_xattr_trusted_set+0x3b/0x50 fs/ext4/xattr_trusted.c:37
 __vfs_setxattr+0x404/0x450 fs/xattr.c:177
 __vfs_setxattr_noperm+0x11d/0x4f0 fs/xattr.c:208
 __vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
 vfs_setxattr+0x112/0x2c0 fs/xattr.c:283
 setxattr+0x1ea/0x3f0 fs/xattr.c:548
 path_setxattr+0x169/0x240 fs/xattr.c:567
 __do_sys_setxattr fs/xattr.c:582 [inline]
 __se_sys_setxattr fs/xattr.c:578 [inline]
 __x64_sys_setxattr+0xc5/0xe0 fs/xattr.c:578
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9d22c6aae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9d1a40c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f9d22d8a050 RCX: 00007f9d22c6aae9
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 00000000200002c0
RBP: 00007f9d22cb647a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9d22d8a050 R15: 00007fff8074bbb8

The buggy address belongs to the page:
page:ffffea00048018c0 refcount:2 mapcount:0 mapping:ffff888109198f50 index:0x2 pfn:0x120063
aops:def_blk_aops ino:0
flags: 0x4000000000002036(referenced|uptodate|lru|active|private)
raw: 4000000000002036 ffffea00048050c8 ffff88811fb7f030 ffff888109198f50
raw: 0000000000000002 ffff8881102c4dc8 00000002ffffffff ffff88811fb6c000
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff88811fb6c000
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x108c48(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE), pid 737, ts 45337719000, free_ts 45335731101
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x166/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348
 __alloc_pages include/linux/gfp.h:544 [inline]
 __alloc_pages_node include/linux/gfp.h:557 [inline]
 alloc_pages_node include/linux/gfp.h:571 [inline]
 alloc_pages include/linux/gfp.h:590 [inline]
 __page_cache_alloc include/linux/pagemap.h:290 [inline]
 pagecache_get_page+0x669/0x950 mm/filemap.c:1848
 find_or_create_page include/linux/pagemap.h:402 [inline]
 grow_dev_page fs/buffer.c:976 [inline]
 grow_buffers fs/buffer.c:1045 [inline]
 __getblk_slow fs/buffer.c:1072 [inline]
 __getblk_gfp+0x221/0x7e0 fs/buffer.c:1370
 sb_getblk include/linux/buffer_head.h:361 [inline]
 __ext4_get_inode_loc+0x4c2/0xbf0 fs/ext4/inode.c:4414
 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4524 [inline]
 __ext4_iget+0x516/0x41f0 fs/ext4/inode.c:4749
 ext4_orphan_get+0x1e3/0x630 fs/ext4/ialloc.c:1391
 ext4_orphan_cleanup+0x696/0xd50 fs/ext4/super.c:3083
 ext4_fill_super+0x888c/0x9150 fs/ext4/super.c:5075
 mount_bdev+0x262/0x370 fs/super.c:1429
 ext4_mount+0x34/0x40 fs/ext4/super.c:6638
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1559
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910
 path_mount+0x56f/0xcb0 fs/namespace.c:3240
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 free_pcp_prepare mm/page_alloc.c:1421 [inline]
 free_unref_page_prepare+0x2ae/0x2d0 mm/page_alloc.c:3336
 free_unref_page_list+0x122/0xb20 mm/page_alloc.c:3443
 release_pages+0xea0/0xef0 mm/swap.c:1103
 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:356
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x177/0x320 mm/mmu_gather.c:326
 unmap_region+0x31c/0x370 mm/mmap.c:2810
 __do_munmap+0x699/0x8c0 mm/mmap.c:3041
 __vm_munmap mm/mmap.c:3064 [inline]
 __do_sys_munmap mm/mmap.c:3090 [inline]
 __se_sys_munmap+0x120/0x1a0 mm/mmap.c:3086
 __x64_sys_munmap+0x5b/0x70 mm/mmap.c:3086
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Memory state around the buggy address:
 ffff888120063180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888120063200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888120063280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                          ^
 ffff888120063300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888120063380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs warning (device loop0): ext4_update_dynamic_rev:1047: updating to rev 1 because of new feature flag, running e2fsck is recommended