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

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Date:   Mon, 27 Jul 2020 14:26:05 -0700
From:   syzbot <syzbot+6a8d618862e1fc55313d@...kaller.appspotmail.com>
To:     daniel.vetter@...ll.ch, ghalat@...hat.com,
        gregkh@...uxfoundation.org, jslaby@...e.com,
        linux-kernel@...r.kernel.org, nico@...xnic.net,
        penguin-kernel@...ove.SAKURA.ne.jp,
        penguin-kernel@...ove.sakura.ne.jp, sam@...nborg.org,
        syzkaller-bugs@...glegroups.com, textshell@...uujin.de
Subject: Re: BUG: unable to handle kernel paging request in insert_char

syzbot suspects this issue was fixed by commit:

commit ce684552a266cb1c7cc2f7e623f38567adec6653
Author: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Date:   Sun Jul 12 11:10:12 2020 +0000

    vt: Reject zero-sized screen buffer size.

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14357d8c900000
start commit:   510c9788 Merge tag 'Wimplicit-fallthrough-5.5-rc2' of git:..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=79f79de2a27d3e3d
dashboard link: https://syzkaller.appspot.com/bug?extid=6a8d618862e1fc55313d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16ed05dee00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16e569b6e00000

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

#syz fix: vt: Reject zero-sized screen buffer size.

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