linux-kernel - Re: NULL-ptr deref in kvm_arch_vcpu

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Message-ID: <CACT4Y+aKHE-aiW9eSuqzLw_XbwFxj_DOxWA4ZoHk9Np8+iofzg@mail.gmail.com>
Date:   Thu, 18 Aug 2016 17:16:56 -0700
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Robert Święcki <robert@...ecki.net>,
        LKML <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: NULL-ptr deref in kvm_arch_vcpu_ioctl under AMD CPUs

On Thu, Aug 18, 2016 at 4:58 AM, Paolo Bonzini <pbonzini@...hat.com> wrote:
>
>
> On 19/02/2016 15:06, Robert Święcki wrote:
>> Hi,
>>
>> This seems non-exploitable due to mmap_min_addr, so I guess it should
>> be treated just as a regular bug
>
> Probably fixed by commit 4c5ea0a9cd02 ("locking/static_key: Fix
> concurrent static_key_slow_inc()", 2016-06-21).  There should be no
> outstanding syzkaller reports for KVM now!

Thanks for the update. I will try to reenable kvm fuzzing on my
syzkaller instances.
Just to make sure, you mean all bugs prefixed with kvm: here, right?
https://github.com/google/syzkaller/wiki/Found-Bugs