linux-kernel - Re: [syzbot] [mm?] WARNING in try_to_migrate

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <10f44f4b-f561-4682-b46d-a61174da1347@lucifer.local>
Date: Mon, 13 Oct 2025 11:58:11 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: syzbot <syzbot+63859a31071a369082b1@...kaller.appspotmail.com>
Cc: Liam.Howlett@...cle.com, akpm@...ux-foundation.org, david@...hat.com,
        dev.jain@....com, harry.yoo@...cle.com, hdanton@...a.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, riel@...riel.com,
        syzkaller-bugs@...glegroups.com, vbabka@...e.cz, ziy@...dia.com
Subject: Re: [syzbot] [mm?] WARNING in try_to_migrate_one (3)

On Wed, Oct 08, 2025 at 09:37:02PM -0700, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit cf1b80dc31a1137b8b4568c138b453bf7453204a
> Author: Dev Jain <dev.jain@....com>
> Date:   Wed Aug 6 14:56:11 2025 +0000
>
>     mm: pass page directly instead of using folio_page
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11f121e2580000
> start commit:   0227b49b5027 Merge tag 'gpio-updates-for-v6.17-rc1-part2' ..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=2ae1da3a7f4a6ba4
> dashboard link: https://syzkaller.appspot.com/bug?extid=63859a31071a369082b1
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=117c72f0580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17ab7ea2580000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: mm: pass page directly instead of using folio_page

Indeed, as discussed in my initial reply + confirmed by syzbot test this does
seem to be it :)

Therefore:

#syz fix: mm: pass page directly instead of using folio_page

>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection