[PATCH] wpa_supplicant: null pointer check before pmksa_cache_flush

[David Spinadel]

From: David Spinadel <david.spinadel at intel.com>

Avoid segmentation fault in case of running wpa_supplicant w/o loaded driver.

Signed-hostap: David Spinadel <david.spinadel at intel.com>
---
 src/rsn_supp/wpa.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/rsn_supp/wpa.c b/src/rsn_supp/wpa.c
index e50404c..3150dc3 100644
--- a/src/rsn_supp/wpa.c
+++ b/src/rsn_supp/wpa.c
@@ -2622,7 +2622,8 @@ void wpa_sm_update_replay_ctr(struct wpa_sm *sm, const u8 *replay_ctr)
 void wpa_sm_pmksa_cache_flush(struct wpa_sm *sm, void *network_ctx)
 {
 #ifndef CONFIG_NO_WPA2
-	pmksa_cache_flush(sm->pmksa, network_ctx);
+	if (sm)
+		pmksa_cache_flush(sm->pmksa, network_ctx);
 #endif /* CONFIG_NO_WPA2 */
 }
 
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