From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49445) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dXOU1-0006xP-RK for qemu-devel@nongnu.org; Tue, 18 Jul 2017 05:07:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dXOTy-000856-Jv for qemu-devel@nongnu.org; Tue, 18 Jul 2017 05:07:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40364) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dXOTy-00083N-Df for qemu-devel@nongnu.org; Tue, 18 Jul 2017 05:07:54 -0400 Date: Tue, 18 Jul 2017 11:07:49 +0200 From: Cornelia Huck Message-ID: <20170718110749.5e7bcc65@gondolin> In-Reply-To: <20170718084943.GC15985@bjsdjshi@linux.vnet.ibm.com> References: <20170718014926.44781-1-bjsdjshi@linux.vnet.ibm.com> <20170718014926.44781-2-bjsdjshi@linux.vnet.ibm.com> <20170718103213.29a597b2@gondolin> <20170718084943.GC15985@bjsdjshi@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 1/2] vfio/ccw: allocate irq info with the right size List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Dong Jia Shi Cc: linux-s390@vger.kernel.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, borntraeger@de.ibm.com, Jing Zhang On Tue, 18 Jul 2017 16:49:43 +0800 Dong Jia Shi wrote: > * Cornelia Huck [2017-07-18 10:32:13 +0200]: > > > On Tue, 18 Jul 2017 03:49:25 +0200 > > Dong Jia Shi wrote: > > > > > From: Jing Zhang > > > > > > When allocating memory for the vfio_irq_info parameter of the > > > VFIO_DEVICE_GET_IRQ_INFO ioctl, we used the wrong size. Let's > > > fix it by using the right size. > > > > > > Reviewed-by: Dong Jia Shi > > > Signed-off-by: Jing Zhang > > > Signed-off-by: Dong Jia Shi > > > --- > > > hw/vfio/ccw.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c > > > index 12d0262336..8d97b53e77 100644 > > > --- a/hw/vfio/ccw.c > > > +++ b/hw/vfio/ccw.c > > > @@ -168,7 +168,7 @@ static void vfio_ccw_register_io_notifier(VFIOCCWDevice *vcdev, Error **errp) > > > return; > > > } > > > > > > - argsz = sizeof(*irq_set); > > > + argsz = sizeof(*irq_info); > > > irq_info = g_malloc0(argsz); > > > irq_info->index = VFIO_CCW_IO_IRQ_INDEX; > > > irq_info->argsz = argsz; > > > > irq_set is larger than irq_info, but yes, let's do this correctly. > > > > Out of curiosity, how did you spot this? > > > > I'm trying to reuse the code here, while introducing some new MMIO > regions, which you will see them some days later. ;> > Looking forward to that :)