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BUG: KASAN: slab-out-of-bounds in ext4_xattr_set_entry+0x13e2/0x1ed6 fs/ext4/xattr.c:1750
Write of size 4029 at addr ffffffe00d6b7440 by task syz-executor.1/13833

CPU: 1 PID: 13833 Comm: syz-executor.1 Not tainted 5.15.0-rc1-syzkaller-00001-g64a19591a293 #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8000957e>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:112

Allocated by task 2023:
(stack is not available)

The buggy address belongs to the object at ffffffe00d6b7400
 which belongs to the cache kmalloc-cg-512 of size 512
The buggy address is located 64 bytes inside of
 512-byte region [ffffffe00d6b7400, ffffffe00d6b7600)
The buggy address belongs to the page:
page:ffffffcf02362d00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8d8b4
head:ffffffcf02362d00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xffe000000010200(slab|head|node=0|zone=0|lastcpupid=0x7ff)
raw: 0ffe000000010200 ffffffcf02339800 0000000300000003 ffffffe005602dc0
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1959, ts 197600044500, free_ts 197525410800
page_owner allocation stack trace missing
page_owner free stack trace missing

Memory state around the buggy address:
 ffffffe00d6b7480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffe00d6b7500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffe00d6b7580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffffffe00d6b7600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffffffe00d6b7680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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