[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: sta...@dpdk.org

Signed-off-by: Chengwen Feng <fengcheng...@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