From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Ignacio Alvarado <ikalvarado@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
kvm@vger.kernel.org, David Matlack <dmatlack@google.com>,
stable <stable@vger.kernel.org>
Subject: Re: [PATCH v2] KVM: Disable irq while unregistering user notifier
Date: Sat, 19 Nov 2016 20:35:49 +0100 [thread overview]
Message-ID: <20161119193548.GH26213@potion> (raw)
In-Reply-To: <d2a834b7-e1be-0308-c87a-f4c160a8c2be@redhat.com>
2016-11-17 13:42+0100, Paolo Bonzini:
> On 04/11/2016 20:15, Ignacio Alvarado wrote:
>> Function user_notifier_unregister should be called only once for each
>> registered user notifier.
>>
>> Function kvm_arch_hardware_disable can be executed from an IPI context
>> which could cause a race condition with a VCPU returning to user mode
>> and attempting to unregister the notifier.
>>
>> Signed-off-by: Ignacio Alvarado <ikalvarado@google.com>
>
> Cc: stable@vger.kernel.org
> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Applied to kvm/master, thanks.
prev parent reply other threads:[~2016-11-19 19:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CACXrx53vkO=HKfwWwk+fVpvxcNjPrYmtDZ10qWxFvVX_PTGp3g@mail.gmail.com>
[not found] ` <1478286955-108360-1-git-send-email-ikalvarado@google.com>
2016-11-17 12:42 ` [PATCH v2] KVM: Disable irq while unregistering user notifier Paolo Bonzini
2016-11-19 19:35 ` Radim Krčmář [this message]
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