linux-kernel - Re: [PATCH v7 15/15] KVM: s390: fix possible null pointer dereference in pending

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Message-ID: <20190131184712.3fcd8c36.cohuck@redhat.com>
Date:   Thu, 31 Jan 2019 18:47:12 +0100
From:   Cornelia Huck <cohuck@...hat.com>
To:     Michael Mueller <mimu@...ux.ibm.com>
Cc:     KVM Mailing List <kvm@...r.kernel.org>,
        Linux-S390 Mailing List <linux-s390@...r.kernel.org>,
        linux-kernel@...r.kernel.org,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Pierre Morel <pmorel@...ux.ibm.com>
Subject: Re: [PATCH v7 15/15] KVM: s390: fix possible null pointer
 dereference in pending_irqs()

On Thu, 31 Jan 2019 09:52:46 +0100
Michael Mueller <mimu@...ux.ibm.com> wrote:

> Assure a GISA is in use before accessing the IPM to avoid a
> null pointer dereference issue.

This series can hopefully make it into the next merge window;
otherwise, queuing a patch fixing up the original code would be good.

> 
> Signed-off-by: Michael Mueller <mimu@...ux.ibm.com>
> Reported-by: Halil Pasic <pasic@...ux.ibm.com>
> ---
>  arch/s390/kvm/interrupt.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@...hat.com>