linux-kernel - Re: [PATCH v2] KVM: x86: Handle SRCU initialization failure during page track init

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Date:   Fri, 03 Sep 2021 09:59:12 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     tcs.kernel@...il.com, pbonzini@...hat.com, seanjc@...gle.com,
        vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Haimin Zhang <tcs_kernel@...cent.com>
Subject: Re: [PATCH v2] KVM: x86: Handle SRCU initialization failure during
 page track init

On Fri, 2021-09-03 at 10:37 +0800, tcs.kernel@...il.com wrote:
> From: Haimin Zhang <tcs_kernel@...cent.com>
> 
> Check the return of init_srcu_struct(), which can fail due to OOM, when
> initializing the page track mechanism.  Lack of checking leads to a NULL
> pointer deref found by a modified syzkaller.
> 
> Signed-off-by: Haimin Zhang <tcs_kernel@...cent.com>
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> Reported-by: TCS Robot <tcs_robot@...cent.com>

I'd drop reported-by. It's not a person (I guess) and the desc
is self-contained already.

Anyway,

Acked-by: Jarkko Sakkinen <jarkko@...nel.org>

/Jarkko