Re: [syzbot] [iommu?] KMSAN: uninit-value in iopt_pages_unfill_xarray

[syzbot]

Hello,

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

Reported-by: syzbot+a0c841e02f328005bbcc@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+a0c841e02f328005bbcc@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         63804fed Linux 6.19-rc7
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=172211b2580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8bf02b9e495b9fcd
dashboard link: https://syzkaller.appspot.com/bug?extid=a0c841e02f328005bbcc
compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1302205a580000

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