linux-kernel - Re: kernel BUG at drivers/dma-buf/dma-buf.c:LINE!

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Date:   Sat, 19 Dec 2020 10:41:46 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+d6734079f30f7fc39021@...kaller.appspotmail.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        christian.koenig@....com, Christian Brauner <christian@...uner.io>,
        Colin King <colin.king@...onical.com>,
        "open list:ANDROID DRIVERS" <devel@...verdev.osuosl.org>,
        DRI <dri-devel@...ts.freedesktop.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hridya Valsaraju <hridya@...gle.com>, jbwyatt4@...il.com,
        Joel Fernandes <joel@...lfernandes.org>,
        linaro-mm-sig-owner@...ts.linaro.org,
        linaro-mm-sig@...ts.linaro.org,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, linux-media@...r.kernel.org,
        m.szyprowski@...sung.com, Martijn Coenen <maco@...roid.com>,
        masahiroy@...nel.org, Peter Zijlstra <peterz@...radead.org>,
        Shuah Khan <shuah@...nel.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Todd Kjos <tkjos@...roid.com>
Subject: Re: kernel BUG at drivers/dma-buf/dma-buf.c:LINE!

On Sat, Dec 19, 2020 at 3:50 AM syzbot
<syzbot+d6734079f30f7fc39021@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit e722a295cf493388dae474745d30e91e1a2ec549
> Author: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Date:   Thu Aug 27 12:36:27 2020 +0000
>
>     staging: ion: remove from the tree
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17d4f137500000
> start commit:   abb3438d Merge tag 'm68knommu-for-v5.9-rc3' of git://git.k..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=978db74cb30aa994
> dashboard link: https://syzkaller.appspot.com/bug?extid=d6734079f30f7fc39021
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17428596900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: staging: ion: remove from the tree
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

The reproducer opens /dev/ion

#syz fix: staging: ion: remove from the tree