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-rw-r--r--crypto/rand/md_rand.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/rand/md_rand.c b/crypto/rand/md_rand.c
index dd291637275d..aee1c30b0a9b 100644
--- a/crypto/rand/md_rand.c
+++ b/crypto/rand/md_rand.c
@@ -198,6 +198,9 @@ static void ssleay_rand_add(const void *buf, int num, double add)
EVP_MD_CTX m;
int do_not_lock;
+ if (!num)
+ return;
+
/*
* (Based on the rand(3) manpage)
*