[PATCH v5 19/52] common/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 <huangdeng...@huawei.com>
Acked-by: Chengwen Feng <fengcheng...@huawei.com>
Acked-by: Morten Brørup <m...@smartsharesystems.com>
Acked-by: Huisong Li <lihuis...@huawei.com>
---
 drivers/common/mlx5/linux/mlx5_nl.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/common/mlx5/linux/mlx5_nl.c 
b/drivers/common/mlx5/linux/mlx5_nl.c
index a5ac4dc543..67fc6c08d9 100644
--- a/drivers/common/mlx5/linux/mlx5_nl.c
+++ b/drivers/common/mlx5/linux/mlx5_nl.c
@@ -1924,18 +1924,21 @@ mlx5_nl_read_events(int nlsk_fd, mlx5_nl_event_cb *cb, 
void *cb_arg)
                .msg_iov = &iov,
                .msg_iovlen = 1,
        };
+       char errmsg[RTE_STRERR_BUFSIZE];
        struct nlmsghdr *hdr;
        ssize_t size;
 
        while (1) {
                size = recvmsg(nlsk_fd, &msg, MSG_DONTWAIT);
                if (size < 0) {
+                       if (strerror_r(errno, errmsg, sizeof(errmsg)) != 0)
+                               snprintf(errmsg, sizeof(errmsg), "Unknown error 
%d", errno);
                        if (errno == EAGAIN)
                                return 0;
                        if (errno == EINTR)
                                continue;
                        DRV_LOG(DEBUG, "Failed to receive netlink message: %s",
-                               strerror(errno));
+                               errmsg);
                        rte_errno = errno;
                        return -rte_errno;
                }
-- 
2.33.0