EXT4-fs (sda1): Unrecognized mount option "fowner=00000000000000000000" or missing value
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16731: comm syz-executor.4: corrupted xattr entries
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #17299: comm syz-executor.1: corrupted xattr entries
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16729: comm syz-executor.0: corrupted xattr entries
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BUG: KASAN: use-after-free in memset include/linux/string.h:332 [inline]
BUG: KASAN: use-after-free in __ext4_expand_extra_isize.isra.0+0x10b/0x1c0 fs/ext4/inode.c:5781
Write of size 992 at addr ffff8881a6c6bea0 by task syz-executor.0/330

CPU: 1 PID: 330 Comm: syz-executor.0 Not tainted 4.14.129+ #11
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 print_address_description+0x60/0x226 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report mm/kasan/report.c:409 [inline]
 kasan_report.cold+0xae/0x2d5 mm/kasan/report.c:393

The buggy address belongs to the page:
page:ffffea00069b1ac0 count:2 mapcount:0 mapping:ffff8881d9eb0950 index:0x42b
flags: 0x400000000000203a(referenced|dirty|lru|active|private)
raw: 400000000000203a ffff8881d9eb0950 000000000000042b 00000002ffffffff
raw: ffffea00069b0aa0 ffffea0006b7f2a0 ffff8881ce977000 ffff8881da81aa80
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff8881da81aa80

Memory state around the buggy address:
 ffff8881a6c6bf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881a6c6bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881a6c6c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff8881a6c6c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881a6c6c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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