KASAN: slab-out-of-bounds Read in fbcon_get_font

Paolo Bonzini pbonzini at redhat.com
Thu Dec 5 10:13:17 UTC 2019


On 04/12/19 22:41, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31
> Author: Russell Currey <ruscur at russell.cc>
> Date:   Mon Feb 8 04:08:20 2016 +0000
> 
>     powerpc/powernv: Remove support for p5ioc2
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=127a042ae00000
> start commit:   76bb8b05 Merge tag 'kbuild-v5.5' of
> git://git.kernel.org/p..
> git tree:       upstream
> final crash:    https://syzkaller.appspot.com/x/report.txt?x=117a042ae00000
> console output: https://syzkaller.appspot.com/x/log.txt?x=167a042ae00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=dd226651cb0f364b
> dashboard link:
> https://syzkaller.appspot.com/bug?extid=4455ca3b3291de891abc
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11181edae00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=105cbb7ae00000
> 
> Reported-by: syzbot+4455ca3b3291de891abc at syzkaller.appspotmail.com
> Fixes: 2de50e9674fc ("powerpc/powernv: Remove support for p5ioc2")
> 
> For information about bisection process see:
> https://goo.gl/tpsmEJ#bisection
> 

Why is everybody being CC'd, even if the bug has nothing to do with the
person's subsystem?

Thanks,

Paolo



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