linux-kernel - Re: kernel panic: stack is corrupted in get_kernel_gp

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Date:   Fri, 13 Nov 2020 10:38:24 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+d6459d8f8984c0929e54@...kaller.appspotmail.com>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: kernel panic: stack is corrupted in get_kernel_gp_address

On Fri, Nov 13, 2020 at 9:27 AM syzbot
<syzbot+d6459d8f8984c0929e54@...kaller.appspotmail.com> wrote:
>
> 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=10ff7572500000
> start commit:   f4d51dff Linux 5.9-rc4
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9
> dashboard link: https://syzkaller.appspot.com/bug?extid=d6459d8f8984c0929e54
> userspace arch: i386
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=164270dd900000
>
> 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

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