linux-kernel - Re: [syzbot] [gfs2?] KASAN: use-after-free Read in qd

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Message-ID: <b3c92f88-4fb7-c4ee-e1a2-8f38150d7edd@redhat.com>
Date:   Wed, 26 Jul 2023 11:14:05 -0500
From:   Bob Peterson <rpeterso@...hat.com>
To:     syzbot <syzbot+3f6a670108ce43356017@...kaller.appspotmail.com>,
        agruenba@...hat.com, andersson@...nel.org,
        cluster-devel@...hat.com, dmitry.baryshkov@...aro.org,
        eadavis@...a.com, konrad.dybcio@...aro.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [gfs2?] KASAN: use-after-free Read in qd_unlock (2)

On 7/26/23 10:03 AM, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit 41a37d157a613444c97e8f71a5fb2a21116b70d7
> Author: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Date:   Mon Dec 26 04:21:51 2022 +0000
> 
>      arm64: dts: qcom: qcs404: use symbol names for PCIe resets
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17b48111a80000
> start commit:   [unknown]
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=fe56f7d193926860
> dashboard link: https://syzkaller.appspot.com/bug?extid=3f6a670108ce43356017
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1209f878c80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=111a48ab480000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: arm64: dts: qcom: qcs404: use symbol names for PCIe resets
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
> 
The bisect is very likely to be wrong.

I have a lot of patches to gfs2's quota code in linux-gfs2/bobquota that 
I hope to get into the next merge window, but the critical patch has 
already been merged. I'm still working on others.

Regards,

Bob Peterson
gfs2 file system