[dpdk-dev] [PATCH v7] linuxapp, eal: Fix the memory leak issue of logid

[Ziye Yang <ziye.yang@intel.com>]

From: Ziye Yang <optimistyzy@gmail.com>

This patch is used to fix the memory leak issue of logid.
We use the ASAN test in SPDK when intergrating DPDK and
find this memory leak issue.

By the way, we also fix several missed function call of
rte_atomic32_clear.

Signed-off-by: Ziye Yang <ziye.yang@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index e59ac65..a5129e5 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -793,7 +793,8 @@ static void rte_eal_init_alert(const char *msg)
 	int i, fctret, ret;
 	pthread_t thread_id;
 	static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
-	const char *logid;
+	const char *p;
+	static char logid[PATH_MAX];
 	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
 	char thread_name[RTE_MAX_THREAD_NAME_LEN];
 
@@ -810,9 +811,8 @@ static void rte_eal_init_alert(const char *msg)
 		return -1;
 	}
 
-	logid = strrchr(argv[0], '/');
-	logid = strdup(logid ? logid + 1: argv[0]);
-
+	p = strrchr(argv[0], '/');
+	snprintf(logid, sizeof(logid), "%s", (p ? p + 1 : argv[0]));
 	thread_id = pthread_self();
 
 	eal_reset_internal_config(&internal_config);
@@ -823,6 +823,7 @@ static void rte_eal_init_alert(const char *msg)
 	if (rte_eal_cpu_init() < 0) {
 		rte_eal_init_alert("Cannot detect lcores.");
 		rte_errno = ENOTSUP;
+		rte_atomic32_clear(&run_once);
 		return -1;
 	}
 
@@ -851,6 +852,7 @@ static void rte_eal_init_alert(const char *msg)
 
 	if (rte_eal_intr_init() < 0) {
 		rte_eal_init_alert("Cannot init interrupt-handling thread\n");
+		rte_atomic32_clear(&run_once);
 		return -1;
 	}
 
@@ -861,6 +863,7 @@ static void rte_eal_init_alert(const char *msg)
 		rte_eal_init_alert("failed to init mp channel\n");
 		if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 			rte_errno = EFAULT;
+			rte_atomic32_clear(&run_once);
 			return -1;
 		}
 	}
-- 
1.9.3