[2/8] ipc: fix hotplug memleak

Message ID 20190417143841.21404-1-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State Superseded, archived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, 2:38 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 the buffers.

Fixes: ac9e4a17370f ("eal: support attach/detach shared device from secondary")
Cc: qi.z.zhang@intel.com
Cc: stable@dpdk.org
Signed-off-by: Herakliusz Lipiec <herakliusz.lipiec@intel.com>
 lib/librte_eal/common/hotplug_mp.c | 2 ++
 1 file changed, 2 insertions(+)


diff --git a/lib/librte_eal/common/hotplug_mp.c b/lib/librte_eal/common/hotplug_mp.c
index 4052a5c7f..2c8366afa 100644
--- a/lib/librte_eal/common/hotplug_mp.c
+++ b/lib/librte_eal/common/hotplug_mp.c
@@ -377,6 +377,7 @@  int eal_dev_hotplug_request_to_primary(struct eal_dev_mp_req *req)
 	ret = rte_mp_request_sync(&mp_req, &mp_reply, &ts);
 	if (ret || mp_reply.nb_received != 1) {
 		RTE_LOG(ERR, EAL, "cannot send request to primary");
+		free(mp_reply.msgs);
 		if (!ret)
 			return -1;
 		return ret;
@@ -405,6 +406,7 @@  int eal_dev_hotplug_request_to_secondary(struct eal_dev_mp_req *req)
 	ret = rte_mp_request_sync(&mp_req, &mp_reply, &ts);
 	if (ret != 0) {
 		RTE_LOG(ERR, EAL, "rte_mp_request_sync failed\n");
+		free(mp_reply.msgs);
 		return ret;