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* [dpdk-dev] [PATCH v1 0/1] power: check freq count before filling the freqs array
@ 2021-07-21  9:27 Richael Zhuang
  2021-07-21  9:27 ` [dpdk-dev] [PATCH v1 1/1] " Richael Zhuang
  0 siblings, 1 reply; 10+ messages in thread
From: Richael Zhuang @ 2021-07-21  9:27 UTC (permalink / raw)
  To: dev

v1:
adding check for freq count

Richael Zhuang (1):
  power: check freq count before filling the freqs array

 lib/power/power_cppc_cpufreq.c   | 5 +++++
 lib/power/power_pstate_cpufreq.c | 5 +++++
 2 files changed, 10 insertions(+)

-- 
2.20.1


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [dpdk-dev] [PATCH v1 1/1] power: check freq count before filling the freqs array
  2021-07-21  9:27 [dpdk-dev] [PATCH v1 0/1] power: check freq count before filling the freqs array Richael Zhuang
@ 2021-07-21  9:27 ` Richael Zhuang
  2021-07-22 19:43   ` Thomas Monjalon
  2021-07-23  2:13   ` [dpdk-dev] [PATCH v2 0/1] power: check freq count before filling the freqs Richael Zhuang
  0 siblings, 2 replies; 10+ messages in thread
From: Richael Zhuang @ 2021-07-21  9:27 UTC (permalink / raw)
  To: dev; +Cc: David Hunt

The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the
array with num_freqs elements, restrict the total num to
RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
like:
Overrunning array "pi->freqs" of 256 bytes by passing it to a
function which accesses it at byte offset 464.

Coverity issue: 371913

Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
---
 lib/power/power_cppc_cpufreq.c   | 5 +++++
 lib/power/power_pstate_cpufreq.c | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/lib/power/power_cppc_cpufreq.c b/lib/power/power_cppc_cpufreq.c
index e92973ab54..db63c2cc10 100644
--- a/lib/power/power_cppc_cpufreq.c
+++ b/lib/power/power_cppc_cpufreq.c
@@ -246,6 +246,11 @@ power_get_available_freqs(struct cppc_power_info *pi)
 			pi->nominal_perf * UNIT_DIFF : pi->nominal_perf;
 	num_freqs = (nominal_perf - scaling_min_freq) / BUS_FREQ + 1 +
 		pi->turbo_available;
+	if (num_freqs >= RTE_MAX_LCORE_FREQS) {
+		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
+				num_freqs);
+		goto out;
+	}
 
 	/* Generate the freq bucket array. */
 	for (i = 0, pi->nb_freqs = 0; i < num_freqs; i++) {
diff --git a/lib/power/power_pstate_cpufreq.c b/lib/power/power_pstate_cpufreq.c
index 3b607515fd..619090c8d1 100644
--- a/lib/power/power_pstate_cpufreq.c
+++ b/lib/power/power_pstate_cpufreq.c
@@ -419,6 +419,11 @@ power_get_available_freqs(struct pstate_power_info *pi)
 	 */
 	num_freqs = (base_max_freq - sys_min_freq) / BUS_FREQ + 1 +
 		pi->turbo_available;
+	if (num_freqs >= RTE_MAX_LCORE_FREQS) {
+		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
+				num_freqs);
+		goto out;
+	}
 
 	/* Generate the freq bucket array.
 	 * If turbo is available the freq bucket[0] value is base_max +1
-- 
2.20.1


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [dpdk-dev] [PATCH v1 1/1] power: check freq count before filling the freqs array
  2021-07-21  9:27 ` [dpdk-dev] [PATCH v1 1/1] " Richael Zhuang
@ 2021-07-22 19:43   ` Thomas Monjalon
  2021-07-23  2:07     ` Richael Zhuang
  2021-07-23  2:13   ` [dpdk-dev] [PATCH v2 0/1] power: check freq count before filling the freqs Richael Zhuang
  1 sibling, 1 reply; 10+ messages in thread
From: Thomas Monjalon @ 2021-07-22 19:43 UTC (permalink / raw)
  To: Richael Zhuang; +Cc: dev, David Hunt

21/07/2021 11:27, Richael Zhuang:
> The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the
> array with num_freqs elements, restrict the total num to
> RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
> like:
> Overrunning array "pi->freqs" of 256 bytes by passing it to a
> function which accesses it at byte offset 464.
> 
> Coverity issue: 371913
> 
> Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>

Please provide "Fixes:" lines.




^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [dpdk-dev] [PATCH v1 1/1] power: check freq count before filling the freqs array
  2021-07-22 19:43   ` Thomas Monjalon
@ 2021-07-23  2:07     ` Richael Zhuang
  0 siblings, 0 replies; 10+ messages in thread
From: Richael Zhuang @ 2021-07-23  2:07 UTC (permalink / raw)
  To: thomas; +Cc: dev, David Hunt, nd, nd



> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Friday, July 23, 2021 3:43 AM
> To: Richael Zhuang <Richael.Zhuang@arm.com>
> Cc: dev@dpdk.org; David Hunt <david.hunt@intel.com>
> Subject: Re: [dpdk-dev] [PATCH v1 1/1] power: check freq count before filling
> the freqs array
> 
> 21/07/2021 11:27, Richael Zhuang:
> > The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the array
> > with num_freqs elements, restrict the total num to
> > RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
> > like:
> > Overrunning array "pi->freqs" of 256 bytes by passing it to a function
> > which accesses it at byte offset 464.
> >
> > Coverity issue: 371913
> >
> > Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
> 
> Please provide "Fixes:" lines.
> 
> 
Thanks, I will add it.


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [dpdk-dev] [PATCH v2 0/1] power: check freq count before filling the freqs
  2021-07-21  9:27 ` [dpdk-dev] [PATCH v1 1/1] " Richael Zhuang
  2021-07-22 19:43   ` Thomas Monjalon
@ 2021-07-23  2:13   ` Richael Zhuang
  2021-07-23  2:13     ` [dpdk-dev] [PATCH v2 1/1] power: check freq count before filling the freqs array Richael Zhuang
  1 sibling, 1 reply; 10+ messages in thread
From: Richael Zhuang @ 2021-07-23  2:13 UTC (permalink / raw)
  To: dev

v1:
add check for freq count
v2:
add "Fixes" tag in commit message

Richael Zhuang (1):
  power: check freq count before filling the freqs array

 lib/power/power_cppc_cpufreq.c   | 5 +++++
 lib/power/power_pstate_cpufreq.c | 5 +++++
 2 files changed, 10 insertions(+)

-- 
2.20.1


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [dpdk-dev] [PATCH v2 1/1] power: check freq count before filling the freqs array
  2021-07-23  2:13   ` [dpdk-dev] [PATCH v2 0/1] power: check freq count before filling the freqs Richael Zhuang
@ 2021-07-23  2:13     ` Richael Zhuang
  2021-07-23  2:22       ` [dpdk-dev] [PATCH v3 0/1] " Richael Zhuang
  0 siblings, 1 reply; 10+ messages in thread
From: Richael Zhuang @ 2021-07-23  2:13 UTC (permalink / raw)
  To: dev; +Cc: richael.zhuang, stable, David Hunt

The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the
array with num_freqs elements, restrict the total num to
RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
like:
Overrunning array "pi->freqs" of 256 bytes by passing it to a
function which accesses it at byte offset 464.

Coverity issue: 371913
Fixes: 82432c45d631 ("power: check freq count before filling")
Cc: richael.zhuang@arm.com
Cc: stable@dpdk.org

Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
---
 lib/power/power_cppc_cpufreq.c   | 5 +++++
 lib/power/power_pstate_cpufreq.c | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/lib/power/power_cppc_cpufreq.c b/lib/power/power_cppc_cpufreq.c
index e92973ab54..db63c2cc10 100644
--- a/lib/power/power_cppc_cpufreq.c
+++ b/lib/power/power_cppc_cpufreq.c
@@ -246,6 +246,11 @@ power_get_available_freqs(struct cppc_power_info *pi)
 			pi->nominal_perf * UNIT_DIFF : pi->nominal_perf;
 	num_freqs = (nominal_perf - scaling_min_freq) / BUS_FREQ + 1 +
 		pi->turbo_available;
+	if (num_freqs >= RTE_MAX_LCORE_FREQS) {
+		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
+				num_freqs);
+		goto out;
+	}
 
 	/* Generate the freq bucket array. */
 	for (i = 0, pi->nb_freqs = 0; i < num_freqs; i++) {
diff --git a/lib/power/power_pstate_cpufreq.c b/lib/power/power_pstate_cpufreq.c
index 3b607515fd..619090c8d1 100644
--- a/lib/power/power_pstate_cpufreq.c
+++ b/lib/power/power_pstate_cpufreq.c
@@ -419,6 +419,11 @@ power_get_available_freqs(struct pstate_power_info *pi)
 	 */
 	num_freqs = (base_max_freq - sys_min_freq) / BUS_FREQ + 1 +
 		pi->turbo_available;
+	if (num_freqs >= RTE_MAX_LCORE_FREQS) {
+		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
+				num_freqs);
+		goto out;
+	}
 
 	/* Generate the freq bucket array.
 	 * If turbo is available the freq bucket[0] value is base_max +1
-- 
2.20.1


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [dpdk-dev] [PATCH v3 0/1] power: check freq count before filling the freqs array
  2021-07-23  2:13     ` [dpdk-dev] [PATCH v2 1/1] power: check freq count before filling the freqs array Richael Zhuang
@ 2021-07-23  2:22       ` Richael Zhuang
  2021-07-23  2:22         ` [dpdk-dev] [PATCH v3 1/1] " Richael Zhuang
  0 siblings, 1 reply; 10+ messages in thread
From: Richael Zhuang @ 2021-07-23  2:22 UTC (permalink / raw)
  To: dev

v1:
add check for freq count
v2:
add "Fixes" tag in commit message
v3:
update commit message

Richael Zhuang (1):
  power: check freq count before filling the freqs array

 lib/power/power_cppc_cpufreq.c   | 5 +++++
 lib/power/power_pstate_cpufreq.c | 5 +++++
 2 files changed, 10 insertions(+)

-- 
2.20.1


^ permalink raw reply	[flat|nested] 10+ messages in thread

* [dpdk-dev] [PATCH v3 1/1] power: check freq count before filling the freqs array
  2021-07-23  2:22       ` [dpdk-dev] [PATCH v3 0/1] " Richael Zhuang
@ 2021-07-23  2:22         ` Richael Zhuang
  2021-07-23  8:37           ` David Hunt
  0 siblings, 1 reply; 10+ messages in thread
From: Richael Zhuang @ 2021-07-23  2:22 UTC (permalink / raw)
  To: dev; +Cc: richael.zhuang, stable, David Hunt

The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the
array with num_freqs elements, restrict the total num to
RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
like:
Overrunning array "pi->freqs" of 256 bytes by passing it to a
function which accesses it at byte offset 464.

Coverity issue: 371913
Fixes: ef1cc88f1837 ("power: support cppc_cpufreq driver")
Cc: richael.zhuang@arm.com
Cc: stable@dpdk.org

Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
---
 lib/power/power_cppc_cpufreq.c   | 5 +++++
 lib/power/power_pstate_cpufreq.c | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/lib/power/power_cppc_cpufreq.c b/lib/power/power_cppc_cpufreq.c
index e92973ab54..db63c2cc10 100644
--- a/lib/power/power_cppc_cpufreq.c
+++ b/lib/power/power_cppc_cpufreq.c
@@ -246,6 +246,11 @@ power_get_available_freqs(struct cppc_power_info *pi)
 			pi->nominal_perf * UNIT_DIFF : pi->nominal_perf;
 	num_freqs = (nominal_perf - scaling_min_freq) / BUS_FREQ + 1 +
 		pi->turbo_available;
+	if (num_freqs >= RTE_MAX_LCORE_FREQS) {
+		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
+				num_freqs);
+		goto out;
+	}
 
 	/* Generate the freq bucket array. */
 	for (i = 0, pi->nb_freqs = 0; i < num_freqs; i++) {
diff --git a/lib/power/power_pstate_cpufreq.c b/lib/power/power_pstate_cpufreq.c
index 3b607515fd..619090c8d1 100644
--- a/lib/power/power_pstate_cpufreq.c
+++ b/lib/power/power_pstate_cpufreq.c
@@ -419,6 +419,11 @@ power_get_available_freqs(struct pstate_power_info *pi)
 	 */
 	num_freqs = (base_max_freq - sys_min_freq) / BUS_FREQ + 1 +
 		pi->turbo_available;
+	if (num_freqs >= RTE_MAX_LCORE_FREQS) {
+		RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n",
+				num_freqs);
+		goto out;
+	}
 
 	/* Generate the freq bucket array.
 	 * If turbo is available the freq bucket[0] value is base_max +1
-- 
2.20.1


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [dpdk-dev] [PATCH v3 1/1] power: check freq count before filling the freqs array
  2021-07-23  2:22         ` [dpdk-dev] [PATCH v3 1/1] " Richael Zhuang
@ 2021-07-23  8:37           ` David Hunt
  2021-07-24  8:11             ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
  0 siblings, 1 reply; 10+ messages in thread
From: David Hunt @ 2021-07-23  8:37 UTC (permalink / raw)
  To: Richael Zhuang, dev; +Cc: stable

Hi Richael,

On 23/7/2021 3:22 AM, Richael Zhuang wrote:
> The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the
> array with num_freqs elements, restrict the total num to
> RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
> like:
> Overrunning array "pi->freqs" of 256 bytes by passing it to a
> function which accesses it at byte offset 464.
>
> Coverity issue: 371913
> Fixes: ef1cc88f1837 ("power: support cppc_cpufreq driver")
> Cc: richael.zhuang@arm.com
> Cc: stable@dpdk.org
>
> Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
> ---
>   lib/power/power_cppc_cpufreq.c   | 5 +++++
>   lib/power/power_pstate_cpufreq.c | 5 +++++
>   2 files changed, 10 insertions(+)
>
---snip---

LGTM to fix the coverity issue.

Acked-by: David Hunt <david.hunt@intel.com>



^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [dpdk-dev] [dpdk-stable] [PATCH v3 1/1] power: check freq count before filling the freqs array
  2021-07-23  8:37           ` David Hunt
@ 2021-07-24  8:11             ` Thomas Monjalon
  0 siblings, 0 replies; 10+ messages in thread
From: Thomas Monjalon @ 2021-07-24  8:11 UTC (permalink / raw)
  To: Richael Zhuang; +Cc: dev, stable, David Hunt, david.marchand

23/07/2021 10:37, David Hunt:
> Hi Richael,
> 
> On 23/7/2021 3:22 AM, Richael Zhuang wrote:
> > The freqs array size is RTE_MAX_LCORE_FREQS. Before filling the
> > array with num_freqs elements, restrict the total num to
> > RTE_MAX_LCORE_FREQS. This fix aims to fix the coverity scan issue
> > like:
> > Overrunning array "pi->freqs" of 256 bytes by passing it to a
> > function which accesses it at byte offset 464.
> >
> > Coverity issue: 371913
> > Fixes: ef1cc88f1837 ("power: support cppc_cpufreq driver")
> > Cc: richael.zhuang@arm.com
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
> 
> LGTM to fix the coverity issue.
> 
> Acked-by: David Hunt <david.hunt@intel.com>

Removed the space before ":" and applied, thanks.



^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2021-07-24  8:10 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-21  9:27 [dpdk-dev] [PATCH v1 0/1] power: check freq count before filling the freqs array Richael Zhuang
2021-07-21  9:27 ` [dpdk-dev] [PATCH v1 1/1] " Richael Zhuang
2021-07-22 19:43   ` Thomas Monjalon
2021-07-23  2:07     ` Richael Zhuang
2021-07-23  2:13   ` [dpdk-dev] [PATCH v2 0/1] power: check freq count before filling the freqs Richael Zhuang
2021-07-23  2:13     ` [dpdk-dev] [PATCH v2 1/1] power: check freq count before filling the freqs array Richael Zhuang
2021-07-23  2:22       ` [dpdk-dev] [PATCH v3 0/1] " Richael Zhuang
2021-07-23  2:22         ` [dpdk-dev] [PATCH v3 1/1] " Richael Zhuang
2021-07-23  8:37           ` David Hunt
2021-07-24  8:11             ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon

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