[PATCH v5 51/52] vdpa/mlx5: replace strerror with reentrant version

[Dengdui Huang]

The function strerror() is insecure in a multi-thread environment.
This patch uses strerror_r() to replace it.

Signed-off-by: Dengdui Huang <huangdengdui at huawei.com>
Acked-by: Chengwen Feng <fengchengwen at huawei.com>
Acked-by: Morten Brørup <mb at smartsharesystems.com>
Acked-by: Huisong Li <lihuisong at huawei.com>
---
 drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
index 093cdd08d2..4a07f76a80 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
@@ -20,6 +20,7 @@ mlx5_vdpa_virtq_kick_handler(void *cb_arg)
 {
 	struct mlx5_vdpa_virtq *virtq = cb_arg;
 	struct mlx5_vdpa_priv *priv = virtq->priv;
+	char errmsg[RTE_STRERR_BUFSIZE];
 	uint64_t buf;
 	int nbytes;
 	int retry;
@@ -43,8 +44,10 @@ mlx5_vdpa_virtq_kick_handler(void *cb_arg)
 			    errno == EWOULDBLOCK ||
 			    errno == EAGAIN)
 				continue;
+			if (strerror_r(errno, errmsg, sizeof(errmsg)) != 0)
+				snprintf(errmsg, sizeof(errmsg), "Unknown error %d", errno);
 			DRV_LOG(ERR,  "Failed to read kickfd of virtq %d: %s.",
-				virtq->index, strerror(errno));
+				virtq->index, errmsg);
 		}
 		break;
 	}
-- 
2.33.0