[dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Xiao Zhang]

This patch tries to fix the coverity issues of dereference after null
check.
The addresses of receive queue start segment for ice, avf, i40e, 
fm10k and ixgb were not checked before use. Add check to avoid
coverity issues.

Coverity issue: 343452
Coverity issue: 343407
Fixes: c68a52b8 ("net/ice: support vector SSE in Rx")
Coverity issue: 343447
Fixes: 319c421f ("net/avf: enable SSE Rx Tx")
Coverity issue: 343422
Coverity issue: 343403
Fixes: ca74903b ("net/i40e: extract non-x86 specific code from vector driver")
Coverity issue: 343416
Fixes: fe65e1e1 ("fm10k: add vector scatter Rx")
Coverity issue: 13245
Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from vector driver")
Cc: stable@dpdk.org

Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
---
v2 changes:
* update commit log with fixes information.

 drivers/net/fm10k/fm10k_rxtx_vec.c        | 3 +++
 drivers/net/i40e/i40e_rxtx_vec_common.h   | 3 +++
 drivers/net/iavf/iavf_rxtx_vec_common.h   | 3 +++
 drivers/net/ice/ice_rxtx_vec_common.h     | 3 +++
 drivers/net/ixgbe/ixgbe_rxtx_vec_common.h | 3 +++
 5 files changed, 15 insertions(+)

diff --git a/drivers/net/fm10k/fm10k_rxtx_vec.c b/drivers/net/fm10k/fm10k_rxtx_vec.c
index 788e248..cb840de 100644
--- a/drivers/net/fm10k/fm10k_rxtx_vec.c
+++ b/drivers/net/fm10k/fm10k_rxtx_vec.c
@@ -602,6 +602,9 @@ fm10k_reassemble_packets(struct fm10k_rx_queue *rxq,
 	struct rte_mbuf *end =  rxq->pkt_last_seg;
 	unsigned pkt_idx, buf_idx;
 
+	if (!start)
+		return 0;
+
 	for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
 		if (end != NULL) {
 			/* processing a split packet */
diff --git a/drivers/net/i40e/i40e_rxtx_vec_common.h b/drivers/net/i40e/i40e_rxtx_vec_common.h
index 0e6ffa0..1351e41 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_common.h
+++ b/drivers/net/i40e/i40e_rxtx_vec_common.h
@@ -20,6 +20,9 @@ reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs,
 	struct rte_mbuf *end =  rxq->pkt_last_seg;
 	unsigned pkt_idx, buf_idx;
 
+	if (!start)
+		return 0;
+
 	for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
 		if (end != NULL) {
 			/* processing a split packet */
diff --git a/drivers/net/iavf/iavf_rxtx_vec_common.h b/drivers/net/iavf/iavf_rxtx_vec_common.h
index db509d7..ac3d62a 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_common.h
+++ b/drivers/net/iavf/iavf_rxtx_vec_common.h
@@ -20,6 +20,9 @@ reassemble_packets(struct iavf_rx_queue *rxq, struct rte_mbuf **rx_bufs,
 	struct rte_mbuf *end =  rxq->pkt_last_seg;
 	unsigned int pkt_idx, buf_idx;
 
+	if (!start)
+		return 0;
+
 	for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
 		if (end) {
 			/* processing a split packet */
diff --git a/drivers/net/ice/ice_rxtx_vec_common.h b/drivers/net/ice/ice_rxtx_vec_common.h
index c5f0d56..11da521 100644
--- a/drivers/net/ice/ice_rxtx_vec_common.h
+++ b/drivers/net/ice/ice_rxtx_vec_common.h
@@ -16,6 +16,9 @@ ice_rx_reassemble_packets(struct ice_rx_queue *rxq, struct rte_mbuf **rx_bufs,
 	struct rte_mbuf *end =  rxq->pkt_last_seg;
 	unsigned int pkt_idx, buf_idx;
 
+	if (!start)
+		return 0;
+
 	for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
 		if (end) {
 			/* processing a split packet */
diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_common.h b/drivers/net/ixgbe/ixgbe_rxtx_vec_common.h
index a97c271..a95cc0a 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx_vec_common.h
+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_common.h
@@ -19,6 +19,9 @@ reassemble_packets(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_bufs,
 	struct rte_mbuf *end =  rxq->pkt_last_seg;
 	unsigned int pkt_idx, buf_idx;
 
+	if (!start)
+		return 0;
+
 	for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
 		if (end != NULL) {
 			/* processing a split packet */
-- 
2.7.4

Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Ferruh Yigit]

On 7/15/2019 1:15 PM, Xiao Zhang wrote:
> This patch tries to fix the coverity issues of dereference after null
> check.
> The addresses of receive queue start segment for ice, avf, i40e, 
> fm10k and ixgb were not checked before use. Add check to avoid
> coverity issues.
> 
> Coverity issue: 343452
> Coverity issue: 343407
> Fixes: c68a52b8 ("net/ice: support vector SSE in Rx")
> Coverity issue: 343447
> Fixes: 319c421f ("net/avf: enable SSE Rx Tx")
> Coverity issue: 343422
> Coverity issue: 343403
> Fixes: ca74903b ("net/i40e: extract non-x86 specific code from vector driver")
> Coverity issue: 343416
> Fixes: fe65e1e1 ("fm10k: add vector scatter Rx")
> Coverity issue: 13245
> Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from vector driver")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>

In patchwork status of this patch is "Superseded" but I can't find the patch
that supersedes this patch, is the current status correct?

Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Zhang, Xiao]

> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Tuesday, July 16, 2019 7:55 PM
> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
> stable@dpdk.org
> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check
> coverity
> 
> On 7/15/2019 1:15 PM, Xiao Zhang wrote:
> > This patch tries to fix the coverity issues of dereference after null
> > check.
> > The addresses of receive queue start segment for ice, avf, i40e, fm10k
> > and ixgb were not checked before use. Add check to avoid coverity
> > issues.
> >
> > Coverity issue: 343452
> > Coverity issue: 343407
> > Fixes: c68a52b8 ("net/ice: support vector SSE in Rx") Coverity issue:
> > 343447
> > Fixes: 319c421f ("net/avf: enable SSE Rx Tx") Coverity issue: 343422
> > Coverity issue: 343403
> > Fixes: ca74903b ("net/i40e: extract non-x86 specific code from vector
> > driver") Coverity issue: 343416
> > Fixes: fe65e1e1 ("fm10k: add vector scatter Rx") Coverity issue: 13245
> > Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from vector
> > driver")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
> 
> In patchwork status of this patch is "Superseded" but I can't find the patch
> that supersedes this patch, is the current status correct?

Sorry, the status of the patch should be "Rejected", I have updated the status.

Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Ferruh Yigit]

On 7/16/2019 1:19 PM, Zhang, Xiao wrote:
> 
>> -----Original Message-----
>> From: Yigit, Ferruh
>> Sent: Tuesday, July 16, 2019 7:55 PM
>> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
>> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
>> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
>> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
>> stable@dpdk.org
>> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check
>> coverity
>>
>> On 7/15/2019 1:15 PM, Xiao Zhang wrote:
>>> This patch tries to fix the coverity issues of dereference after null
>>> check.
>>> The addresses of receive queue start segment for ice, avf, i40e, fm10k
>>> and ixgb were not checked before use. Add check to avoid coverity
>>> issues.
>>>
>>> Coverity issue: 343452
>>> Coverity issue: 343407
>>> Fixes: c68a52b8 ("net/ice: support vector SSE in Rx") Coverity issue:
>>> 343447
>>> Fixes: 319c421f ("net/avf: enable SSE Rx Tx") Coverity issue: 343422
>>> Coverity issue: 343403
>>> Fixes: ca74903b ("net/i40e: extract non-x86 specific code from vector
>>> driver") Coverity issue: 343416
>>> Fixes: fe65e1e1 ("fm10k: add vector scatter Rx") Coverity issue: 13245
>>> Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from vector
>>> driver")
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
>>
>> In patchwork status of this patch is "Superseded" but I can't find the patch
>> that supersedes this patch, is the current status correct?
> 
> Sorry, the status of the patch should be "Rejected", I have updated the status.
> 

Thanks for updating, why it is rejected? (self-rejected ?)

Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Zhang, Xiao]

> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Tuesday, July 16, 2019 10:26 PM
> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
> stable@dpdk.org
> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check
> coverity
> 
> On 7/16/2019 1:19 PM, Zhang, Xiao wrote:
> >
> >> -----Original Message-----
> >> From: Yigit, Ferruh
> >> Sent: Tuesday, July 16, 2019 7:55 PM
> >> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
> >> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> >> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
> >> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>;
> >> stable@dpdk.org
> >> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after
> >> null check coverity
> >>
> >> On 7/15/2019 1:15 PM, Xiao Zhang wrote:
> >>> This patch tries to fix the coverity issues of dereference after
> >>> null check.
> >>> The addresses of receive queue start segment for ice, avf, i40e,
> >>> fm10k and ixgb were not checked before use. Add check to avoid
> >>> coverity issues.
> >>>
> >>> Coverity issue: 343452
> >>> Coverity issue: 343407
> >>> Fixes: c68a52b8 ("net/ice: support vector SSE in Rx") Coverity issue:
> >>> 343447
> >>> Fixes: 319c421f ("net/avf: enable SSE Rx Tx") Coverity issue: 343422
> >>> Coverity issue: 343403
> >>> Fixes: ca74903b ("net/i40e: extract non-x86 specific code from
> >>> vector
> >>> driver") Coverity issue: 343416
> >>> Fixes: fe65e1e1 ("fm10k: add vector scatter Rx") Coverity issue:
> >>> 13245
> >>> Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from
> >>> vector
> >>> driver")
> >>> Cc: stable@dpdk.org
> >>>
> >>> Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
> >>
> >> In patchwork status of this patch is "Superseded" but I can't find
> >> the patch that supersedes this patch, is the current status correct?
> >
> > Sorry, the status of the patch should be "Rejected", I have updated the
> status.
> >
> 
> Thanks for updating, why it is rejected? (self-rejected ?)

Yes, since this issues are for different devices, I was suggested better to split the patch base on the device or issue ID.

Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Ferruh Yigit]

On 7/16/2019 3:35 PM, Zhang, Xiao wrote:
> 
>> -----Original Message-----
>> From: Yigit, Ferruh
>> Sent: Tuesday, July 16, 2019 10:26 PM
>> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
>> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
>> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
>> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
>> stable@dpdk.org
>> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check
>> coverity
>>
>> On 7/16/2019 1:19 PM, Zhang, Xiao wrote:
>>>
>>>> -----Original Message-----
>>>> From: Yigit, Ferruh
>>>> Sent: Tuesday, July 16, 2019 7:55 PM
>>>> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
>>>> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
>>>> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
>>>> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming
>> <qiming.yang@intel.com>;
>>>> stable@dpdk.org
>>>> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after
>>>> null check coverity
>>>>
>>>> On 7/15/2019 1:15 PM, Xiao Zhang wrote:
>>>>> This patch tries to fix the coverity issues of dereference after
>>>>> null check.
>>>>> The addresses of receive queue start segment for ice, avf, i40e,
>>>>> fm10k and ixgb were not checked before use. Add check to avoid
>>>>> coverity issues.
>>>>>
>>>>> Coverity issue: 343452
>>>>> Coverity issue: 343407
>>>>> Fixes: c68a52b8 ("net/ice: support vector SSE in Rx") Coverity issue:
>>>>> 343447
>>>>> Fixes: 319c421f ("net/avf: enable SSE Rx Tx") Coverity issue: 343422
>>>>> Coverity issue: 343403
>>>>> Fixes: ca74903b ("net/i40e: extract non-x86 specific code from
>>>>> vector
>>>>> driver") Coverity issue: 343416
>>>>> Fixes: fe65e1e1 ("fm10k: add vector scatter Rx") Coverity issue:
>>>>> 13245
>>>>> Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from
>>>>> vector
>>>>> driver")
>>>>> Cc: stable@dpdk.org
>>>>>
>>>>> Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
>>>>
>>>> In patchwork status of this patch is "Superseded" but I can't find
>>>> the patch that supersedes this patch, is the current status correct?
>>>
>>> Sorry, the status of the patch should be "Rejected", I have updated the
>> status.
>>>
>>
>> Thanks for updating, why it is rejected? (self-rejected ?)
> 
> Yes, since this issues are for different devices, I was suggested better to split the patch base on the device or issue ID.
> 

So there will be a new version, if so can you please update the patch status as
"Change requested"?

And I think it is better to make these suggestions publicly, at least put the a
quick summary about the decision, so that other interested parties can be aware
of it and/or comment on it.

Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check coverity

[Zhang, Xiao]

> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Tuesday, July 16, 2019 10:45 PM
> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu, Wenzhuo
> <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
> stable@dpdk.org
> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after null check
> coverity
> 
> On 7/16/2019 3:35 PM, Zhang, Xiao wrote:
> >
> >> -----Original Message-----
> >> From: Yigit, Ferruh
> >> Sent: Tuesday, July 16, 2019 10:26 PM
> >> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
> >> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> >> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
> >> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>;
> >> stable@dpdk.org
> >> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after
> >> null check coverity
> >>
> >> On 7/16/2019 1:19 PM, Zhang, Xiao wrote:
> >>>
> >>>> -----Original Message-----
> >>>> From: Yigit, Ferruh
> >>>> Sent: Tuesday, July 16, 2019 7:55 PM
> >>>> To: Zhang, Xiao <xiao.zhang@intel.com>; dev@dpdk.org
> >>>> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Wang, Xiao W
> >>>> <xiao.w.wang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Lu,
> >>>> Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming
> >> <qiming.yang@intel.com>;
> >>>> stable@dpdk.org
> >>>> Subject: Re: [dpdk-stable] [v2] drivers/net: fix dereference after
> >>>> null check coverity
> >>>>
> >>>> On 7/15/2019 1:15 PM, Xiao Zhang wrote:
> >>>>> This patch tries to fix the coverity issues of dereference after
> >>>>> null check.
> >>>>> The addresses of receive queue start segment for ice, avf, i40e,
> >>>>> fm10k and ixgb were not checked before use. Add check to avoid
> >>>>> coverity issues.
> >>>>>
> >>>>> Coverity issue: 343452
> >>>>> Coverity issue: 343407
> >>>>> Fixes: c68a52b8 ("net/ice: support vector SSE in Rx") Coverity issue:
> >>>>> 343447
> >>>>> Fixes: 319c421f ("net/avf: enable SSE Rx Tx") Coverity issue:
> >>>>> 343422 Coverity issue: 343403
> >>>>> Fixes: ca74903b ("net/i40e: extract non-x86 specific code from
> >>>>> vector
> >>>>> driver") Coverity issue: 343416
> >>>>> Fixes: fe65e1e1 ("fm10k: add vector scatter Rx") Coverity issue:
> >>>>> 13245
> >>>>> Fixes: 8a44c15a ("net/ixgbe: extract non-x86 specific code from
> >>>>> vector
> >>>>> driver")
> >>>>> Cc: stable@dpdk.org
> >>>>>
> >>>>> Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
> >>>>
> >>>> In patchwork status of this patch is "Superseded" but I can't find
> >>>> the patch that supersedes this patch, is the current status correct?
> >>>
> >>> Sorry, the status of the patch should be "Rejected", I have updated
> >>> the
> >> status.
> >>>
> >>
> >> Thanks for updating, why it is rejected? (self-rejected ?)
> >
> > Yes, since this issues are for different devices, I was suggested better to split
> the patch base on the device or issue ID.
> >
> 
> So there will be a new version, if so can you please update the patch status as
> "Change requested"?
> 
> And I think it is better to make these suggestions publicly, at least put the a quick
> summary about the decision, so that other interested parties can be aware of it
> and/or comment on it.

OK, I will update the status and follow your suggestion in the future. Thanks.