[PATCH v7 5/6] eal: fix memory leak in async IPC secondary path

[Anatoly Burakov]

When rte_mp_request_async() succeeds on the secondary process path, the
dummy request is freed only if it was inserted into the queue. However,
when the actual request was sent successfully (nb_sent > 0), the dummy is
not used and the function returns without freeing it.

Free dummy before returning on the success path when it was not inserted
into the queue.

Fixes: f05e26051c15 ("eal: add IPC asynchronous request")
Cc: stable at dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
 lib/eal/common/eal_common_proc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/eal/common/eal_common_proc.c b/lib/eal/common/eal_common_proc.c
index 0cffc7a127..8902159386 100644
--- a/lib/eal/common/eal_common_proc.c
+++ b/lib/eal/common/eal_common_proc.c
@@ -1212,6 +1212,8 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
 		/* if we couldn't send anything, clean up */
 		if (ret != 0)
 			goto fail;
+		if (!dummy_used)
+			free(dummy);
 		return 0;
 	}
 
-- 
2.47.3