linux-kernel - Re: KASAN: slab-out-of-bounds Read in gfn_to

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Date:   Fri, 10 Apr 2020 10:50:33 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     syzbot <syzbot+25a50e1a4e196faed650@...kaller.appspotmail.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        pbonzini@...hat.com, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: slab-out-of-bounds Read in gfn_to_pfn

On Fri, Apr 10, 2020 at 09:33:11AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    f5e94d10 Merge tag 'drm-next-2020-04-08' of git://anongit...
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1450c657e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=ca75979eeebf06c2
> dashboard link: https://syzkaller.appspot.com/bug?extid=25a50e1a4e196faed650
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+25a50e1a4e196faed650@...kaller.appspotmail.com

#syz dup: KASAN: slab-out-of-bounds Read in __kvm_gfn_to_hva_cache_init