kernel-janitors.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Sean Christopherson <seanjc@google.com>
To: Colin King <colin.king@canonical.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
	Ben Gardon <bgardon@google.com>,
	kvm@vger.kernel.org, kernel-janitors@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH][next] KVM: x86/mmu: Fix uninitialized boolean variable flush
Date: Tue, 22 Jun 2021 16:38:25 +0000	[thread overview]
Message-ID: <YNISAXXPWnhJlurO@google.com> (raw)
In-Reply-To: <20210622150912.23429-1-colin.king@canonical.com>

On Tue, Jun 22, 2021, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> In the case where kvm_memslots_have_rmaps(kvm) is false the boolean
> variable flush is not set and is uninitialized.  If is_tdp_mmu_enabled(kvm)
> is true then the call to kvm_tdp_mmu_zap_collapsible_sptes passes the
> uninitialized value of flush into the call. Fix this by initializing
> flush to false.
> 
> Addresses-Coverity: ("Uninitialized scalar variable")
> Fixes: e2209710ccc5 ("KVM: x86/mmu: Skip rmap operations if rmaps not allocated")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---

Reviewed-by: Sean Christopherson <seanjc@google.com>

  reply	other threads:[~2021-06-22 16:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-22 15:09 Colin King
2021-06-22 16:38 ` Sean Christopherson [this message]
2021-06-22 16:43 ` Paolo Bonzini

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YNISAXXPWnhJlurO@google.com \
    --to=seanjc@google.com \
    --cc=bgardon@google.com \
    --cc=bp@alien8.de \
    --cc=colin.king@canonical.com \
    --cc=hpa@zytor.com \
    --cc=jmattson@google.com \
    --cc=joro@8bytes.org \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=tglx@linutronix.de \
    --cc=vkuznets@redhat.com \
    --cc=wanpengli@tencent.com \
    --cc=x86@kernel.org \
    --subject='Re: [PATCH][next] KVM: x86/mmu: Fix uninitialized boolean variable flush' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).