[PATCH v2 41/44] event/opdl: fix segment fault when parse devargs

[Chengwen Feng]

The rte_kvargs_process() was used to parse KV pairs, it also supports
to parse 'only keys' (e.g. socket_id) type. And the callback function
parameter 'value' is NULL when parsed 'only keys'.

This patch fixes segment fault when parse input args with 'only keys'.

Fixes: 3c7f3dcfb099 ("event/opdl: add PMD main body and helper function")
Cc: stable at dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
---
 drivers/event/opdl/opdl_evdev.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/event/opdl/opdl_evdev.c b/drivers/event/opdl/opdl_evdev.c
index 9ce8b39b60..f90d31aa19 100644
--- a/drivers/event/opdl/opdl_evdev.c
+++ b/drivers/event/opdl/opdl_evdev.c
@@ -580,6 +580,8 @@ static int
 assign_numa_node(const char *key __rte_unused, const char *value, void *opaque)
 {
 	int *socket_id = opaque;
+	if (value == NULL)
+		return -EINVAL;
 	*socket_id = atoi(value);
 	if (*socket_id >= RTE_MAX_NUMA_NODES)
 		return -1;
@@ -590,6 +592,10 @@ static int
 set_do_validation(const char *key __rte_unused, const char *value, void *opaque)
 {
 	int *do_val = opaque;
+
+	if (value == NULL)
+		return -EINVAL;
+
 	*do_val = atoi(value);
 	if (*do_val != 0)
 		*do_val = 1;
@@ -601,6 +607,9 @@ set_do_test(const char *key __rte_unused, const char *value, void *opaque)
 {
 	int *do_test = opaque;
 
+	if (value == NULL)
+		return -EINVAL;
+
 	*do_test = atoi(value);
 
 	if (*do_test != 0)
-- 
2.17.1