kni: fix crash with null name

Fix a segmentation fault which occurs when the kni_autotest is run
in the 'test' application.

This segmenation fault occurs when rte_kni_get() is called with a
NULL value for 'name'.

Fixes: 0c6bc8ef70ba ("kni: memzone pool for alloc and release")
Cc: stable@dpdk.org
Signed-off-by: Dan Gora <dg@adax.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index 8a8f6c1..65f6a2b 100644 (file)
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -715,6 +715,9 @@ rte_kni_get(const char *name)
        struct rte_kni_memzone_slot *it;
        struct rte_kni *kni;
 
+       if (name == NULL || name[0] == '\0')
+               return NULL;
+
        /* Note: could be improved perf-wise if necessary */
        for (i = 0; i < kni_memzone_pool.max_ifaces; i++) {
                it = &kni_memzone_pool.slots[i];