Re: [syzbot] [ext4?] KASAN: slab-use-after-free Write in do_split

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+09bec78ee77613a3efdd@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+09bec78ee77613a3efdd@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         72d3fcf8 Linux 7.3-rc5
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1472dec9580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=718e346eb0b8f38
dashboard link: https://syzkaller.appspot.com/bug?extid=09bec78ee77613a3efdd
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
patch:          https://syzkaller.appspot.com/x/patch.diff?x=15ccdec9580000

Note: testing is done by a robot and is best-effort only.