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Message-ID: <0000000000006d819905fe07c52f@google.com>
Date:   Tue, 13 Jun 2023 12:23:34 -0700
From:   syzbot <syzbot+2d4f8693f438d2bd4bdb@...kaller.appspotmail.com>
To:     airlied@...il.com, airlied@...ux.ie, christian.koenig@....com,
        daniel.vetter@...ll.ch, daniel.vetter@...el.com, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org, javierm@...hat.com,
        linaro-mm-sig-owner@...ts.linaro.org,
        linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, maarten.lankhorst@...ux.intel.com,
        mripard@...nel.org, suijingfeng@...ngson.cn,
        sumit.semwal@...aro.org, syzkaller-bugs@...glegroups.com,
        tzimmermann@...e.de, zackr@...are.com
Subject: Re: [syzbot] kernel BUG in vmf_insert_pfn_prot

syzbot suspects this issue was fixed by commit:

commit a5b44c4adb1699661d22e5152fb26885f30a2e4c
Author: Thomas Zimmermann <tzimmermann@...e.de>
Date:   Mon Mar 20 15:07:44 2023 +0000

    drm/fbdev-generic: Always use shadow buffering

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1025ee07280000
start commit:   0326074ff465 Merge tag 'net-next-6.1' of git://git.kernel...
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d323d85b1f8a4ed7
dashboard link: https://syzkaller.appspot.com/bug?extid=2d4f8693f438d2bd4bdb
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14fd1182880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17567514880000

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

#syz fix: drm/fbdev-generic: Always use shadow buffering

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

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