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From: Herakliusz Lipiec <herakliusz.lipiec@intel.com>
To: matan@mellanox.com, shahafs@mellanox.com
Cc: dev@dpdk.org, Herakliusz Lipiec <herakliusz.lipiec@intel.com>,
	yskoh@mellanox.com
Subject: [dpdk-dev] [PATCH 7/8] ipc: fix net/mlx4 memleak
Date: Wed, 17 Apr 2019 15:43:58 +0100	[thread overview]
Message-ID: <20190417144358.23888-1-herakliusz.lipiec@intel.com> (raw)
Message-ID: <20190417144358.TusF-O2o5jknru5ec6OsSdslQcsSPH5TIWRPWEGidHo@z> (raw)

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",
 		      dev->data->port_id);
+		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",
 		      dev->data->port_id);
-		return -rte_errno;
+		ret = -rte_errno;
+		goto exit;
 	}
 	assert(mp_rep.nb_received == 1);
 	mp_res = &mp_rep.msgs[0];
-- 
2.17.2


             reply	other threads:[~2019-04-17 14:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-17 14:43 Herakliusz Lipiec [this message]
2019-04-17 14:43 ` Herakliusz Lipiec

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