Re: [PATCH v7] linuxapp, eal: Fix the memory leak issue of logid

["Ananyev, Konstantin" <konstantin.ananyev@intel.com>]

> -----Original Message-----
> From: Yang, Ziye
> Sent: Tuesday, September 11, 2018 2:28 AM
> To: dev@dpdk.org
> Cc: Ananyev, Konstantin <konstantin.ananyev@intel.com>; Ziye Yang <optimistyzy@gmail.com>
> Subject: [PATCH v7] linuxapp, eal: Fix the memory leak issue of logid
> 
> 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;
>  		}
>  	}
> --

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

> 1.9.3