engines/http: work-around crash in certain libssl versions

Fixes: https://github.com/axboe/fio/issues/684
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/engines/http.c b/engines/http.c
index 93fcd0d8e44a5528a4e36879bbd75af9afe9904e..d81e4288ff7bfdec000781240cea3aafa687ca88 100644 (file)
--- a/engines/http.c
+++ b/engines/http.c
@@ -273,6 +273,8 @@ static void _hmac(unsigned char *md, void *key, int key_len, char *data) {
        ctx = HMAC_CTX_new();
 #else
        ctx = &_ctx;
+       /* work-around crash in certain versions of libssl */
+       HMAC_CTX_init(ctx);
 #endif
        HMAC_Init_ex(ctx, key, key_len, EVP_sha256(), NULL);
        HMAC_Update(ctx, (unsigned char*)data, strlen(data));