[dpdk-dev] [PATCH v3] app/testpmd: fix null pointer dereferencing issue

[Kalesh A P <kalesh-anakkur.purayil@broadcom.com>]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

In cmd_ddp_get_list_parsed(), elements of "p_list" are accessed
even after the memory allocation for "p_list" fails.

With this patch, this null pointer dereference is avoided as we
return when there is malloc failure.

Fixes: e088907bb851 ("app/testpmd: add command for getting loaded DDP profiles")
Cc: stable@dpdk.org

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
---
v3: fixed commit message as suggested by Bernard Iremonger
v2: fixed headline case

 app/test-pmd/cmdline.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index b040630..996a498 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -16891,8 +16891,10 @@ cmd_ddp_get_list_parsed(
 #ifdef RTE_LIBRTE_I40E_PMD
 	size = PROFILE_INFO_SIZE * MAX_PROFILE_NUM + 4;
 	p_list = (struct rte_pmd_i40e_profile_list *)malloc(size);
-	if (!p_list)
+	if (!p_list) {
 		printf("%s: Failed to malloc buffer\n", __func__);
+		return;
+	}
 
 	if (ret == -ENOTSUP)
 		ret = rte_pmd_i40e_get_ddp_list(res->port_id,
-- 
2.10.1