linux-kernel - Re: [syzbot] BUG: unable to handle kernel paging request in bitfill

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Message-ID: <CACT4Y+bi-h7PGWqM=JyjvaTHcyzkg9nndUTVCyV-rADPYgHspA@mail.gmail.com>
Date:   Thu, 12 May 2022 15:21:14 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+a4edd73d589b0b7efbeb@...kaller.appspotmail.com>
Cc:     b.zolnierkie@...sung.com, bugs-a21@...nlit-rail.com,
        dri-devel@...ts.freedesktop.org, javierm@...hat.com,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        maxime@...no.tech, ngraniel@...obongo.net,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] BUG: unable to handle kernel paging request in
 bitfill_aligned (2)

On Sat, 29 Jan 2022 at 15:07, syzbot
<syzbot+a4edd73d589b0b7efbeb@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 0499f419b76f94ede08304aad5851144813ac55c
> Author: Javier Martinez Canillas <javierm@...hat.com>
> Date:   Mon Jan 10 09:56:25 2022 +0000
>
>     video: vga16fb: Only probe for EGA and VGA 16 color graphic cards
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1752f5c0700000
> start commit:   2a987e65025e Merge tag 'perf-tools-fixes-for-v5.16-2021-12..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=7d5e878e3399b6cc
> dashboard link: https://syzkaller.appspot.com/bug?extid=a4edd73d589b0b7efbeb
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16671badb00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=122beabdb00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: video: vga16fb: Only probe for EGA and VGA 16 color graphic cards

Based on commit subject looks legit:

#syz fix: video: vga16fb: Only probe for EGA and VGA 16 color graphic cards