[PATCH v2 43/44] mempool/cnxk: 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: 0a50a5aad299 ("mempool/cnxk: add device probe/remove")
Cc: stable at dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
---
 drivers/mempool/cnxk/cnxk_mempool.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mempool/cnxk/cnxk_mempool.c b/drivers/mempool/cnxk/cnxk_mempool.c
index 78caf987d0..d803e5928d 100644
--- a/drivers/mempool/cnxk/cnxk_mempool.c
+++ b/drivers/mempool/cnxk/cnxk_mempool.c
@@ -36,6 +36,9 @@ parse_max_pools_handler(const char *key, const char *value, void *extra_args)
 	RTE_SET_USED(key);
 	uint32_t val;
 
+	if (value == NULL)
+		return -EINVAL;
+
 	val = rte_align32pow2(atoi(value));
 	if (val < npa_aura_size_to_u32(NPA_AURA_SZ_128))
 		val = 128;
-- 
2.17.1