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

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Date:   Tue, 7 Apr 2020 18:08:35 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     syzbot <syzbot+516667c144d77aa5ba3c@...kaller.appspotmail.com>
Cc:     alex.shi@...ux.alibaba.com, armijn@...ldur.nl,
        gregkh@...uxfoundation.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, pbonzini@...hat.com,
        rfontana@...hat.com, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, willy@...radead.org
Subject: Re: KASAN: slab-out-of-bounds Read in __kvm_map_gfn

On Tue, Apr 07, 2020 at 01:16:11PM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    bef7b2a7 Merge tag 'devicetree-for-5.7' of git://git.kerne..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=12672c5de00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=91b674b8f0368e69
> dashboard link: https://syzkaller.appspot.com/bug?extid=516667c144d77aa5ba3c
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> userspace arch: i386
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1217010be00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=106c8febe00000

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