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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 4096 at addr ffffffe00ccd7600 by task syz-executor.1/4737

CPU: 1 PID: 4737 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 2697:
(stack is not available)

Freed by task 2697:
(stack is not available)

The buggy address belongs to the object at ffffffe00ccd7500
 which belongs to the cache skbuff_head_cache of size 232
The buggy address is located 24 bytes to the right of
 232-byte region [ffffffe00ccd7500, ffffffe00ccd75e8)
The buggy address belongs to the page:
page:ffffffcf0233b5c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8ced7
flags: 0xffe000000000200(slab|node=0|zone=0|lastcpupid=0x7ff)
raw: 0ffe000000000200 ffffffcf0229ae40 0000000300000002 ffffffe0057b6500
raw: 0000000000000000 00000000000c000c 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 0x12a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY), pid 13, ts 318744794300, free_ts 247743236000
page_owner allocation stack trace missing
page_owner free stack trace missing

Memory state around the buggy address:
 ffffffe00ccd7500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffffffe00ccd7580: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
>ffffffe00ccd7600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
                   ^
 ffffffe00ccd7680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffffffe00ccd7700: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
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