* [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
@ 2023-05-04 13:50 Dragos Tatulea via Virtualization
2023-05-04 17:08 ` Feng Liu via Virtualization
2023-05-04 17:47 ` Feng Liu via Virtualization
0 siblings, 2 replies; 11+ messages in thread
From: Dragos Tatulea via Virtualization @ 2023-05-04 13:50 UTC (permalink / raw)
To: Michael S. Tsirkin, Jason Wang, Xuan Zhuo, Xie Yongji
Cc: linux-kernel, Gal Pressman, virtualization
The referenced patch calls set_vq_affinity without checking if the op is
valid. This patch adds the check.
Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
---
drivers/virtio/virtio_vdpa.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index eb6aee8c06b2..989e2d7184ce 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
err = PTR_ERR(vqs[i]);
goto err_setup_vq;
}
- ops->set_vq_affinity(vdpa, i, &masks[i]);
+
+ if (ops->set_vq_affinity)
+ ops->set_vq_affinity(vdpa, i, &masks[i]);
}
cb.callback = virtio_vdpa_config_cb;
--
2.40.1
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^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 13:50 [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity Dragos Tatulea via Virtualization
@ 2023-05-04 17:08 ` Feng Liu via Virtualization
2023-05-04 17:19 ` Dragos Tatulea via Virtualization
2023-05-04 18:51 ` Michael S. Tsirkin
2023-05-04 17:47 ` Feng Liu via Virtualization
1 sibling, 2 replies; 11+ messages in thread
From: Feng Liu via Virtualization @ 2023-05-04 17:08 UTC (permalink / raw)
To: Dragos Tatulea, Michael S. Tsirkin, Jason Wang, Xuan Zhuo,
Xie Yongji
Cc: Gal Pressman, linux-kernel, virtualization
On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> External email: Use caution opening links or attachments
>
>
> The referenced patch calls set_vq_affinity without checking if the op is
> valid. This patch adds the check.
>
> Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
> Reviewed-by: Gal Pressman <gal@nvidia.com>
> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> ---
> drivers/virtio/virtio_vdpa.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> index eb6aee8c06b2..989e2d7184ce 100644
> --- a/drivers/virtio/virtio_vdpa.c
> +++ b/drivers/virtio/virtio_vdpa.c
> @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
> err = PTR_ERR(vqs[i]);
> goto err_setup_vq;
> }
> - ops->set_vq_affinity(vdpa, i, &masks[i]);
> +
> + if (ops->set_vq_affinity)
> + ops->set_vq_affinity(vdpa, i, &masks[i]);
if ops->set_vq_affinity is NULL, should give an error code to err, and
return err
> }
>
> cb.callback = virtio_vdpa_config_cb;
> --
> 2.40.1
>
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 17:08 ` Feng Liu via Virtualization
@ 2023-05-04 17:19 ` Dragos Tatulea via Virtualization
2023-05-04 17:46 ` Feng Liu via Virtualization
2023-05-04 18:51 ` Michael S. Tsirkin
1 sibling, 1 reply; 11+ messages in thread
From: Dragos Tatulea via Virtualization @ 2023-05-04 17:19 UTC (permalink / raw)
To: Feng Liu, xieyongji@bytedance.com, mst@redhat.com,
jasowang@redhat.com, xuanzhuo@linux.alibaba.com
Cc: Gal Pressman, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org
On Thu, 2023-05-04 at 13:08 -0400, Feng Liu wrote:
>
>
> On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> > External email: Use caution opening links or attachments
> >
> >
> > The referenced patch calls set_vq_affinity without checking if the op is
> > valid. This patch adds the check.
> >
> > Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading
> > mechanism")
> > Reviewed-by: Gal Pressman <gal@nvidia.com>
> > Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> > ---
> > drivers/virtio/virtio_vdpa.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> > index eb6aee8c06b2..989e2d7184ce 100644
> > --- a/drivers/virtio/virtio_vdpa.c
> > +++ b/drivers/virtio/virtio_vdpa.c
> > @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device
> > *vdev, unsigned int nvqs,
> > err = PTR_ERR(vqs[i]);
> > goto err_setup_vq;
> > }
> > - ops->set_vq_affinity(vdpa, i, &masks[i]);
> > +
> > + if (ops->set_vq_affinity)
> > + ops->set_vq_affinity(vdpa, i, &masks[i]);
> if ops->set_vq_affinity is NULL, should give an error code to err, and
> return err
>
I don't think so: the set_vq_affinity is marked as optional.
> > }
> >
> > cb.callback = virtio_vdpa_config_cb;
> > --
> > 2.40.1
> >
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 17:19 ` Dragos Tatulea via Virtualization
@ 2023-05-04 17:46 ` Feng Liu via Virtualization
0 siblings, 0 replies; 11+ messages in thread
From: Feng Liu via Virtualization @ 2023-05-04 17:46 UTC (permalink / raw)
To: Dragos Tatulea, xieyongji@bytedance.com, mst@redhat.com,
jasowang@redhat.com, xuanzhuo@linux.alibaba.com
Cc: Gal Pressman, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org
On 2023-05-04 p.m.1:19, Dragos Tatulea wrote:
> On Thu, 2023-05-04 at 13:08 -0400, Feng Liu wrote:
>>
>>
>> On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
>>> External email: Use caution opening links or attachments
>>>
>>>
>>> The referenced patch calls set_vq_affinity without checking if the op is
>>> valid. This patch adds the check.
>>>
>>> Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading
>>> mechanism")
>>> Reviewed-by: Gal Pressman <gal@nvidia.com>
>>> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
>>> ---
>>> drivers/virtio/virtio_vdpa.c | 4 +++-
>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
>>> index eb6aee8c06b2..989e2d7184ce 100644
>>> --- a/drivers/virtio/virtio_vdpa.c
>>> +++ b/drivers/virtio/virtio_vdpa.c
>>> @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device
>>> *vdev, unsigned int nvqs,
>>> err = PTR_ERR(vqs[i]);
>>> goto err_setup_vq;
>>> }
>>> - ops->set_vq_affinity(vdpa, i, &masks[i]);
>>> +
>>> + if (ops->set_vq_affinity)
>>> + ops->set_vq_affinity(vdpa, i, &masks[i]);
>> if ops->set_vq_affinity is NULL, should give an error code to err, and
>> return err
>>
> I don't think so: the set_vq_affinity is marked as optional.
>
Yes, I see
>>> }
>>>
>>> cb.callback = virtio_vdpa_config_cb;
>>> --
>>> 2.40.1
>>>
>
>
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 13:50 [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity Dragos Tatulea via Virtualization
2023-05-04 17:08 ` Feng Liu via Virtualization
@ 2023-05-04 17:47 ` Feng Liu via Virtualization
1 sibling, 0 replies; 11+ messages in thread
From: Feng Liu via Virtualization @ 2023-05-04 17:47 UTC (permalink / raw)
To: Dragos Tatulea, Michael S. Tsirkin, Jason Wang, Xuan Zhuo,
Xie Yongji
Cc: Gal Pressman, linux-kernel, virtualization
On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> External email: Use caution opening links or attachments
>
>
> The referenced patch calls set_vq_affinity without checking if the op is
> valid. This patch adds the check.
>
> Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
> Reviewed-by: Gal Pressman <gal@nvidia.com>
> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> ---
Reviewed-by: Feng Liu <feliu@nvidia.com>
> drivers/virtio/virtio_vdpa.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> index eb6aee8c06b2..989e2d7184ce 100644
> --- a/drivers/virtio/virtio_vdpa.c
> +++ b/drivers/virtio/virtio_vdpa.c
> @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
> err = PTR_ERR(vqs[i]);
> goto err_setup_vq;
> }
> - ops->set_vq_affinity(vdpa, i, &masks[i]);
> +
> + if (ops->set_vq_affinity)
> + ops->set_vq_affinity(vdpa, i, &masks[i]);
> }
>
> cb.callback = virtio_vdpa_config_cb;
> --
> 2.40.1
>
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 17:08 ` Feng Liu via Virtualization
2023-05-04 17:19 ` Dragos Tatulea via Virtualization
@ 2023-05-04 18:51 ` Michael S. Tsirkin
2023-05-04 22:47 ` Feng Liu via Virtualization
2023-05-12 12:51 ` Dragos Tatulea
1 sibling, 2 replies; 11+ messages in thread
From: Michael S. Tsirkin @ 2023-05-04 18:51 UTC (permalink / raw)
To: Feng Liu
Cc: Xuan Zhuo, linux-kernel, virtualization, Xie Yongji, Gal Pressman
On Thu, May 04, 2023 at 01:08:54PM -0400, Feng Liu wrote:
>
>
> On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> > External email: Use caution opening links or attachments
> >
> >
> > The referenced patch calls set_vq_affinity without checking if the op is
> > valid. This patch adds the check.
> >
> > Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
> > Reviewed-by: Gal Pressman <gal@nvidia.com>
> > Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> > ---
> > drivers/virtio/virtio_vdpa.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> > index eb6aee8c06b2..989e2d7184ce 100644
> > --- a/drivers/virtio/virtio_vdpa.c
> > +++ b/drivers/virtio/virtio_vdpa.c
> > @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
> > err = PTR_ERR(vqs[i]);
> > goto err_setup_vq;
> > }
> > - ops->set_vq_affinity(vdpa, i, &masks[i]);
> > +
> > + if (ops->set_vq_affinity)
> > + ops->set_vq_affinity(vdpa, i, &masks[i]);
> if ops->set_vq_affinity is NULL, should give an error code to err, and
> return err
Given we ignore return code, hardly seems like a critical thing to do.
Is it really important? affinity is an optimization isn't it?
> > }
> >
> > cb.callback = virtio_vdpa_config_cb;
> > --
> > 2.40.1
> >
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 18:51 ` Michael S. Tsirkin
@ 2023-05-04 22:47 ` Feng Liu via Virtualization
2023-05-12 12:51 ` Dragos Tatulea
1 sibling, 0 replies; 11+ messages in thread
From: Feng Liu via Virtualization @ 2023-05-04 22:47 UTC (permalink / raw)
To: Michael S. Tsirkin
Cc: Xuan Zhuo, linux-kernel, virtualization, Xie Yongji, Gal Pressman
On 2023-05-04 p.m.2:51, Michael S. Tsirkin wrote:
> External email: Use caution opening links or attachments
>
>
> On Thu, May 04, 2023 at 01:08:54PM -0400, Feng Liu wrote:
>>
>>
>> On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
>>> External email: Use caution opening links or attachments
>>>
>>>
>>> The referenced patch calls set_vq_affinity without checking if the op is
>>> valid. This patch adds the check.
>>>
>>> Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
>>> Reviewed-by: Gal Pressman <gal@nvidia.com>
>>> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
>>> ---
>>> drivers/virtio/virtio_vdpa.c | 4 +++-
>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
>>> index eb6aee8c06b2..989e2d7184ce 100644
>>> --- a/drivers/virtio/virtio_vdpa.c
>>> +++ b/drivers/virtio/virtio_vdpa.c
>>> @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
>>> err = PTR_ERR(vqs[i]);
>>> goto err_setup_vq;
>>> }
>>> - ops->set_vq_affinity(vdpa, i, &masks[i]);
>>> +
>>> + if (ops->set_vq_affinity)
>>> + ops->set_vq_affinity(vdpa, i, &masks[i]);
>> if ops->set_vq_affinity is NULL, should give an error code to err, and
>> return err
>
> Given we ignore return code, hardly seems like a critical thing to do.
> Is it really important? affinity is an optimization isn't it?
>
Yes, it is an optimization, got it.
>>> }
>>>
>>> cb.callback = virtio_vdpa_config_cb;
>>> --
>>> 2.40.1
>>>
>
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-04 18:51 ` Michael S. Tsirkin
2023-05-04 22:47 ` Feng Liu via Virtualization
@ 2023-05-12 12:51 ` Dragos Tatulea
2023-05-12 13:30 ` Michael S. Tsirkin
1 sibling, 1 reply; 11+ messages in thread
From: Dragos Tatulea @ 2023-05-12 12:51 UTC (permalink / raw)
To: Feng Liu, mst@redhat.com
Cc: xuanzhuo@linux.alibaba.com, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
xieyongji@bytedance.com, Gal Pressman
On Thu, 2023-05-04 at 14:51 -0400, Michael S. Tsirkin wrote:
> On Thu, May 04, 2023 at 01:08:54PM -0400, Feng Liu wrote:
> >
> >
> > On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> > > External email: Use caution opening links or attachments
> > >
> > >
> > > The referenced patch calls set_vq_affinity without checking if the op is
> > > valid. This patch adds the check.
> > >
> > > Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading
> > > mechanism")
> > > Reviewed-by: Gal Pressman <gal@nvidia.com>
> > > Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> > > ---
> > > drivers/virtio/virtio_vdpa.c | 4 +++-
> > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> > > index eb6aee8c06b2..989e2d7184ce 100644
> > > --- a/drivers/virtio/virtio_vdpa.c
> > > +++ b/drivers/virtio/virtio_vdpa.c
> > > @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device
> > > *vdev, unsigned int nvqs,
> > > err = PTR_ERR(vqs[i]);
> > > goto err_setup_vq;
> > > }
> > > - ops->set_vq_affinity(vdpa, i, &masks[i]);
> > > +
> > > + if (ops->set_vq_affinity)
> > > + ops->set_vq_affinity(vdpa, i, &masks[i]);
> > if ops->set_vq_affinity is NULL, should give an error code to err, and
> > return err
>
> Given we ignore return code, hardly seems like a critical thing to do.
> Is it really important? affinity is an optimization isn't it?
>
> > >
set_vq_affinity is optional so it's not an error if the op is not implemented.
Is there anything else that needs to be done for this fix?
Thanks,
Dragos
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-12 12:51 ` Dragos Tatulea
@ 2023-05-12 13:30 ` Michael S. Tsirkin
2023-05-12 23:55 ` Shannon Nelson via Virtualization
0 siblings, 1 reply; 11+ messages in thread
From: Michael S. Tsirkin @ 2023-05-12 13:30 UTC (permalink / raw)
To: Dragos Tatulea
Cc: xuanzhuo@linux.alibaba.com, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
xieyongji@bytedance.com, Gal Pressman
On Fri, May 12, 2023 at 12:51:21PM +0000, Dragos Tatulea wrote:
> On Thu, 2023-05-04 at 14:51 -0400, Michael S. Tsirkin wrote:
> > On Thu, May 04, 2023 at 01:08:54PM -0400, Feng Liu wrote:
> > >
> > >
> > > On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> > > > External email: Use caution opening links or attachments
> > > >
> > > >
> > > > The referenced patch calls set_vq_affinity without checking if the op is
> > > > valid. This patch adds the check.
> > > >
> > > > Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading
> > > > mechanism")
> > > > Reviewed-by: Gal Pressman <gal@nvidia.com>
> > > > Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> > > > ---
> > > > drivers/virtio/virtio_vdpa.c | 4 +++-
> > > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> > > > index eb6aee8c06b2..989e2d7184ce 100644
> > > > --- a/drivers/virtio/virtio_vdpa.c
> > > > +++ b/drivers/virtio/virtio_vdpa.c
> > > > @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device
> > > > *vdev, unsigned int nvqs,
> > > > err = PTR_ERR(vqs[i]);
> > > > goto err_setup_vq;
> > > > }
> > > > - ops->set_vq_affinity(vdpa, i, &masks[i]);
> > > > +
> > > > + if (ops->set_vq_affinity)
> > > > + ops->set_vq_affinity(vdpa, i, &masks[i]);
> > > if ops->set_vq_affinity is NULL, should give an error code to err, and
> > > return err
> >
> > Given we ignore return code, hardly seems like a critical thing to do.
> > Is it really important? affinity is an optimization isn't it?
> >
> > > >
> set_vq_affinity is optional so it's not an error if the op is not implemented.
>
> Is there anything else that needs to be done for this fix?
>
> Thanks,
> Dragos
>
no, it's queued already.
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-12 13:30 ` Michael S. Tsirkin
@ 2023-05-12 23:55 ` Shannon Nelson via Virtualization
2023-06-02 12:21 ` Michael S. Tsirkin
0 siblings, 1 reply; 11+ messages in thread
From: Shannon Nelson via Virtualization @ 2023-05-12 23:55 UTC (permalink / raw)
To: virtualization, Michael S. Tsirkin
On 5/12/23 6:30 AM, Michael S. Tsirkin wrote:
>
> On Fri, May 12, 2023 at 12:51:21PM +0000, Dragos Tatulea wrote:
>> On Thu, 2023-05-04 at 14:51 -0400, Michael S. Tsirkin wrote:
>>> On Thu, May 04, 2023 at 01:08:54PM -0400, Feng Liu wrote:
>>>>
>>>>
>>>> On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
>>>>> External email: Use caution opening links or attachments
>>>>>
>>>>>
>>>>> The referenced patch calls set_vq_affinity without checking if the op is
>>>>> valid. This patch adds the check.
>>>>>
>>>>> Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading
>>>>> mechanism")
>>>>> Reviewed-by: Gal Pressman <gal@nvidia.com>
>>>>> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
>>>>> ---
>>>>> drivers/virtio/virtio_vdpa.c | 4 +++-
>>>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
>>>>> index eb6aee8c06b2..989e2d7184ce 100644
>>>>> --- a/drivers/virtio/virtio_vdpa.c
>>>>> +++ b/drivers/virtio/virtio_vdpa.c
>>>>> @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device
>>>>> *vdev, unsigned int nvqs,
>>>>> err = PTR_ERR(vqs[i]);
>>>>> goto err_setup_vq;
>>>>> }
>>>>> - ops->set_vq_affinity(vdpa, i, &masks[i]);
>>>>> +
>>>>> + if (ops->set_vq_affinity)
>>>>> + ops->set_vq_affinity(vdpa, i, &masks[i]);
>>>> if ops->set_vq_affinity is NULL, should give an error code to err, and
>>>> return err
>>>
>>> Given we ignore return code, hardly seems like a critical thing to do.
>>> Is it really important? affinity is an optimization isn't it?
>>>
>>>>>
>> set_vq_affinity is optional so it's not an error if the op is not implemented.
>>
>> Is there anything else that needs to be done for this fix?
>>
>> Thanks,
>> Dragos
>>
>
> no, it's queued already.
Are these queued into a repo that is accessible? I haven't seen
activity in the vhost.git where I would have expected it. After
stumbling over and debugging this same problem, I was happy to see it
fixed, and I'd like to pull from a repo that has the current updates.
Thanks,
sln
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^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity
2023-05-12 23:55 ` Shannon Nelson via Virtualization
@ 2023-06-02 12:21 ` Michael S. Tsirkin
0 siblings, 0 replies; 11+ messages in thread
From: Michael S. Tsirkin @ 2023-06-02 12:21 UTC (permalink / raw)
To: Shannon Nelson; +Cc: virtualization
On Fri, May 12, 2023 at 04:55:38PM -0700, Shannon Nelson wrote:
> On 5/12/23 6:30 AM, Michael S. Tsirkin wrote:
> >
> > On Fri, May 12, 2023 at 12:51:21PM +0000, Dragos Tatulea wrote:
> > > On Thu, 2023-05-04 at 14:51 -0400, Michael S. Tsirkin wrote:
> > > > On Thu, May 04, 2023 at 01:08:54PM -0400, Feng Liu wrote:
> > > > >
> > > > >
> > > > > On 2023-05-04 a.m.9:50, Dragos Tatulea wrote:
> > > > > > External email: Use caution opening links or attachments
> > > > > >
> > > > > >
> > > > > > The referenced patch calls set_vq_affinity without checking if the op is
> > > > > > valid. This patch adds the check.
> > > > > >
> > > > > > Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading
> > > > > > mechanism")
> > > > > > Reviewed-by: Gal Pressman <gal@nvidia.com>
> > > > > > Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
> > > > > > ---
> > > > > > drivers/virtio/virtio_vdpa.c | 4 +++-
> > > > > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > > > > >
> > > > > > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
> > > > > > index eb6aee8c06b2..989e2d7184ce 100644
> > > > > > --- a/drivers/virtio/virtio_vdpa.c
> > > > > > +++ b/drivers/virtio/virtio_vdpa.c
> > > > > > @@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device
> > > > > > *vdev, unsigned int nvqs,
> > > > > > err = PTR_ERR(vqs[i]);
> > > > > > goto err_setup_vq;
> > > > > > }
> > > > > > - ops->set_vq_affinity(vdpa, i, &masks[i]);
> > > > > > +
> > > > > > + if (ops->set_vq_affinity)
> > > > > > + ops->set_vq_affinity(vdpa, i, &masks[i]);
> > > > > if ops->set_vq_affinity is NULL, should give an error code to err, and
> > > > > return err
> > > >
> > > > Given we ignore return code, hardly seems like a critical thing to do.
> > > > Is it really important? affinity is an optimization isn't it?
> > > >
> > > > > >
> > > set_vq_affinity is optional so it's not an error if the op is not implemented.
> > >
> > > Is there anything else that needs to be done for this fix?
> > >
> > > Thanks,
> > > Dragos
> > >
> >
> > no, it's queued already.
>
> Are these queued into a repo that is accessible? I haven't seen activity in
> the vhost.git where I would have expected it. After stumbling over and
> debugging this same problem, I was happy to see it fixed, and I'd like to
> pull from a repo that has the current updates.
>
> Thanks,
> sln
Pushed to next now.
--
MST
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^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2023-06-02 12:21 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-05-04 13:50 [PATCH] virtio-vdpa: Fix unchecked call to NULL set_vq_affinity Dragos Tatulea via Virtualization
2023-05-04 17:08 ` Feng Liu via Virtualization
2023-05-04 17:19 ` Dragos Tatulea via Virtualization
2023-05-04 17:46 ` Feng Liu via Virtualization
2023-05-04 18:51 ` Michael S. Tsirkin
2023-05-04 22:47 ` Feng Liu via Virtualization
2023-05-12 12:51 ` Dragos Tatulea
2023-05-12 13:30 ` Michael S. Tsirkin
2023-05-12 23:55 ` Shannon Nelson via Virtualization
2023-06-02 12:21 ` Michael S. Tsirkin
2023-05-04 17:47 ` Feng Liu via Virtualization
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