linux-kernel - Re: BUG: unable to handle kernel paging request in cfb

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Message-ID: <000000000000fbf57305b6beb939@google.com>
Date:   Fri, 18 Dec 2020 07:26:03 -0800
From:   syzbot <syzbot+dfd0b1c6705301cc4847@...kaller.appspotmail.com>
To:     b.zolnierkie@...sung.com, dan.carpenter@...cle.com,
        dri-devel@...ts.freedesktop.org, george.kennedy@...cle.com,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: BUG: unable to handle kernel paging request in cfb_imageblit

syzbot suspects this issue was fixed by commit:

commit a49145acfb975d921464b84fe00279f99827d816
Author: George Kennedy <george.kennedy@...cle.com>
Date:   Tue Jul 7 19:26:03 2020 +0000

    fbmem: add margin check to fb_check_caps()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1149f30f500000
start commit:   22fbc037 Merge tag 'for-linus' of git://git.kernel.org/pub..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=4e672827d2ffab1f
dashboard link: https://syzkaller.appspot.com/bug?extid=dfd0b1c6705301cc4847
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11ba9a5d900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17cfd4af900000

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

#syz fix: fbmem: add margin check to fb_check_caps()

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