diff mbox series

[v2] net/mlx4: fix verbs fd leak in the secondary process

Message ID 1657129733-12126-1-git-send-email-longli@linuxonhyperv.com (mailing list archive)
State Accepted, archived
Delegated to: Raslan Darawsheh
Headers
Series [v2] net/mlx4: fix verbs fd leak in the secondary process |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation success Compilation OK
ci/iol-aarch64-unit-testing success Testing PASS
ci/iol-aarch64-compile-testing success Testing PASS
ci/github-robot: build success github build: passed
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-x86_64-compile-testing success Testing PASS
ci/iol-x86_64-unit-testing success Testing PASS
ci/iol-intel-Functional fail Functional Testing issues
ci/iol-abi-testing success Testing PASS
ci/intel-Testing success Testing PASS

Commit Message

Long Li July 6, 2022, 5:48 p.m. UTC 
  From: Long Li <longli@microsoft.com>

FDs passed from rte_mp_msg are duplicated to the secondary process and
need to be closed.

Fixes: 0203d33a10 ("net/mlx4: support secondary process")
Signed-off-by: Long Li <longli@microsoft.com>
---
Change in v2: handle error case where mlx4_proc_priv_init() might fail 

 drivers/net/mlx4/mlx4.c    | 9 ++++++---
 drivers/net/mlx4/mlx4_mp.c | 7 ++++++-
 2 files changed, 12 insertions(+), 4 deletions(-)

Comments

Slava Ovsiienko July 7, 2022, 9:44 a.m. UTC | #1 
> -----Original Message-----
> From: longli@linuxonhyperv.com <longli@linuxonhyperv.com>
> Sent: Wednesday, July 6, 2022 20:49
> To: Matan Azrad <matan@nvidia.com>; Ferruh Yigit <ferruh.yigit@xilinx.com>
> Cc: dev@dpdk.org; Karanjot Singh <ksingh1@paloaltonetworks.com>; NBU-
> Contact-longli (EXTERNAL) <longli@microsoft.com>
> Subject: [Patch v2] net/mlx4: fix verbs fd leak in the secondary process
> 
> From: Long Li <longli@microsoft.com>
> 
> FDs passed from rte_mp_msg are duplicated to the secondary process and need
> to be closed.
> 
> Fixes: 0203d33a10 ("net/mlx4: support secondary process")
> Signed-off-by: Long Li <longli@microsoft.com>
> ---
> Change in v2: handle error case where mlx4_proc_priv_init() might fail
>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Raslan Darawsheh Aug. 14, 2022, 1:50 p.m. UTC | #2 
Hi,

> -----Original Message-----
> From: longli@linuxonhyperv.com <longli@linuxonhyperv.com>
> Sent: Wednesday, July 6, 2022 8:49 PM
> To: Matan Azrad <matan@nvidia.com>; Ferruh Yigit
> <ferruh.yigit@xilinx.com>
> Cc: dev@dpdk.org; Karanjot Singh <ksingh1@paloaltonetworks.com>; NBU-
> Contact-longli (EXTERNAL) <longli@microsoft.com>
> Subject: [Patch v2] net/mlx4: fix verbs fd leak in the secondary process
> 
> From: Long Li <longli@microsoft.com>
> 
> FDs passed from rte_mp_msg are duplicated to the secondary process and
> need to be closed.
> 
> Fixes: 0203d33a10 ("net/mlx4: support secondary process")
> Signed-off-by: Long Li <longli@microsoft.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh
diff mbox series

Patch

diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 3f3c4a7c72..2e0b4a17e2 100644
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -877,6 +877,8 @@  mlx4_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 		snprintf(name, sizeof(name), "%s port %u",
 			 mlx4_glue->get_device_name(ibv_dev), port);
 		if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+			int fd;
+
 			eth_dev = rte_eth_dev_attach_secondary(name);
 			if (eth_dev == NULL) {
 				ERROR("can not attach rte ethdev");
@@ -899,13 +901,14 @@  mlx4_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 			if (err)
 				goto err_secondary;
 			/* Receive command fd from primary process. */
-			err = mlx4_mp_req_verbs_cmd_fd(eth_dev);
-			if (err < 0) {
+			fd = mlx4_mp_req_verbs_cmd_fd(eth_dev);
+			if (fd < 0) {
 				err = rte_errno;
 				goto err_secondary;
 			}
 			/* Remap UAR for Tx queues. */
-			err = mlx4_tx_uar_init_secondary(eth_dev, err);
+			err = mlx4_tx_uar_init_secondary(eth_dev, fd);
+			close(fd);
 			if (err) {
 				err = rte_errno;
 				goto err_secondary;
diff --git a/drivers/net/mlx4/mlx4_mp.c b/drivers/net/mlx4/mlx4_mp.c
index 8fcfb5490e..b0bb48c8f1 100644
--- a/drivers/net/mlx4/mlx4_mp.c
+++ b/drivers/net/mlx4/mlx4_mp.c
@@ -5,6 +5,7 @@ 
 
 #include <stdio.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <rte_eal.h>
 #include <ethdev_driver.h>
@@ -134,15 +135,19 @@  mp_secondary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
 			mlx4_tx_uar_uninit_secondary(dev);
 			mlx4_proc_priv_uninit(dev);
 			ret = mlx4_proc_priv_init(dev);
-			if (ret)
+			if (ret) {
+				close(mp_msg->fds[0]);
 				return -rte_errno;
+			}
 			ret = mlx4_tx_uar_init_secondary(dev, mp_msg->fds[0]);
 			if (ret) {
+				close(mp_msg->fds[0]);
 				mlx4_proc_priv_uninit(dev);
 				return -rte_errno;
 			}
 		}
 #endif
+		close(mp_msg->fds[0]);
 		rte_mb();
 		mp_init_msg(dev, &mp_res, param->type);
 		res->result = 0;