[7/8] ipc: fix net/mlx4 memleak

Message ID 20190417144358.23888-1-herakliusz.lipiec@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Series [1/8] ipc: fix rte_mp_request_sync memleak |


Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Herakliusz Lipiec April 17, 2019, 2:43 p.m. UTC
  When sending multiple requests, rte_mp_request_sync
can succeed sending a few of those requests, but then
fail on a later one and in the end return with rc=-1.
The upper layers - e.g. device hotplug - currently
handles this case as if no messages were sent and no
memory for response buffers was allocated, which is
not true. Fixed by always freeing reply message buffers.

Fixes: 0b259b8e9655 ("net/mlx4: enable secondary process to register DMA memory")
Cc: yskoh@mellanox.com
Signed-off-by: Herakliusz Lipiec <herakliusz.lipiec@intel.com>
 drivers/net/mlx4/mlx4_mp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)


diff --git a/drivers/net/mlx4/mlx4_mp.c b/drivers/net/mlx4/mlx4_mp.c
index 183622453..f4cff7486 100644
--- a/drivers/net/mlx4/mlx4_mp.c
+++ b/drivers/net/mlx4/mlx4_mp.c
@@ -255,6 +255,7 @@  mlx4_mp_req_mr_create(struct rte_eth_dev *dev, uintptr_t addr)
 	if (ret) {
 		ERROR("port %u request to primary process failed",
+		free(mp_rep.msgs);
 		return -rte_errno;
 	assert(mp_rep.nb_received == 1);
@@ -292,7 +293,8 @@  mlx4_mp_req_verbs_cmd_fd(struct rte_eth_dev *dev)
 	if (ret) {
 		ERROR("port %u request to primary process failed",
-		return -rte_errno;
+		ret = -rte_errno;
+		goto exit;
 	assert(mp_rep.nb_received == 1);
 	mp_res = &mp_rep.msgs[0];