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Message-ID: <000000000000d2c94e0596c1d47b@google.com>
Date:   Thu, 07 Nov 2019 05:42:06 -0800
From:   syzbot <syzbot+a9317fe7ad261fc76b88@...kaller.appspotmail.com>
To:     andy@...yhouse.net, davem@...emloft.net,
        dri-devel@...ts.freedesktop.org, gregkh@...uxfoundation.org,
        hverkuil-cisco@...all.nl, j.vosburgh@...il.com,
        kyungmin.park@...sung.com, linaro-mm-sig-owner@...ts.linaro.org,
        linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, m.szyprowski@...sung.com,
        maheshb@...gle.com, mchehab+samsung@...nel.org, mchehab@...nel.org,
        netdev@...r.kernel.org, pawel@...iak.com, sumit.semwal@...aro.org,
        syzkaller-bugs@...glegroups.com, tfiga@...omium.org,
        vfalico@...il.com
Subject: Re: WARNING in dma_buf_vunmap

syzbot suspects this bug was fixed by commit:

commit 62dcb4f41836bd3c44b5b651bb6df07ea4cb1551
Author: Hans Verkuil <hverkuil-cisco@...all.nl>
Date:   Thu Nov 8 12:23:37 2018 +0000

     media: vb2: check memory model for VIDIOC_CREATE_BUFS

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=116af11c600000
start commit:   d41217aa Merge tag 'pci-v4.20-fixes-1' of git://git.kernel..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=4a0a89f12ca9b0f5
dashboard link: https://syzkaller.appspot.com/bug?extid=a9317fe7ad261fc76b88
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16f7b6f5400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=105a2783400000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: media: vb2: check memory model for VIDIOC_CREATE_BUFS

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

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