Re: [syzbot] KASAN: slab-use-after-free Write in o2hb_region_dev_store

[syzbot]

Hello,

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

Reported-by: syzbot+3025e3e8fc0b928af8f5@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+3025e3e8fc0b928af8f5@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         654ae5d7 Merge tag 'drm-fixes-2026-09-05' of https://g..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13d8e125580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8c5c3949d762a91f
dashboard link: https://syzkaller.appspot.com/bug?extid=3025e3e8fc0b928af8f5
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch:          https://syzkaller.appspot.com/x/patch.diff?x=10349215580000

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