linux-kernel - Re: [PATCH] KVM: x86: Fix mce_banks memory leak on mci_ctl2

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Message-ID: <Yw6FD867fK2Blf1G@google.com>
Date:   Tue, 30 Aug 2022 21:45:51 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Vipin Sharma <vipinsh@...gle.com>
Cc:     pbonzini@...hat.com, jmattson@...gle.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: x86: Fix mce_banks memory leak on mci_ctl2_banks
 allocation failure

On Fri, Aug 19, 2022, Vipin Sharma wrote:
> If mci_ctl2_banks allocation fails, kvm goes to fail_free_pio_data and
> forgets about freeing mce_banks memory causing memory leak.
> 
> Individually check memory allocation status and free memory in the correct
> order.
> 
> Fixes: 281b52780b57 ("KVM: x86: Add emulation for MSR_IA32_MCx_CTL2 MSRs.")
> Signed-off-by: Vipin Sharma <vipinsh@...gle.com>
> ---

Pushed to branch `for_paolo/6.1` at:

    https://github.com/sean-jc/linux.git

Unless you hear otherwise, it will make its way to kvm/queue "soon".

Note, the commit IDs are not guaranteed to be stable.