Re: [syzbot] KASAN: slab-out-of-bounds Write in utf32_to_utf8

[syzbot]

Hello,

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

Reported-by: syzbot+a2748ba908c108e7e525@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+a2748ba908c108e7e525@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         2c3418ff Merge tag 'keys-v7.3-rc7' of git://git.kernel..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16f1c715580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=341a98f91c13ec9
dashboard link: https://syzkaller.appspot.com/bug?extid=a2748ba908c108e7e525
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=16686ff5580000

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