From d8f852f5f3692bbf15743d1aca25e6abcbe652ad Mon Sep 17 00:00:00 2001 From: Dapeng Yu Date: Thu, 15 Jul 2021 13:38:14 +0800 Subject: [PATCH] net/softnic: fix memory leak in arguments parsing In function pmd_parse_args(), firmware path is duplicated from device arguments as character string, but is never freed, which cause memory leak. This patch changes the type of firmware member of struct pmd_params to character array, to make memory resource release unnecessary, and changes the type of name member to character array, to keep the consistency of character string handling in struct pmd_params. Fixes: 7e68bc20f8c8 ("net/softnic: restructure") Cc: stable@dpdk.org Signed-off-by: Dapeng Yu Acked-by: Jasvinder Singh --- drivers/net/softnic/rte_eth_softnic.c | 30 ++++++++++++++++--- .../net/softnic/rte_eth_softnic_internals.h | 5 ++-- 2 files changed, 29 insertions(+), 6 deletions(-) diff --git a/drivers/net/softnic/rte_eth_softnic.c b/drivers/net/softnic/rte_eth_softnic.c index f64023256d..0aa7147b13 100644 --- a/drivers/net/softnic/rte_eth_softnic.c +++ b/drivers/net/softnic/rte_eth_softnic.c @@ -440,6 +440,7 @@ pmd_parse_args(struct pmd_params *p, const char *params) { struct rte_kvargs *kvlist; int ret = 0; + char *firmware = NULL; kvlist = rte_kvargs_parse(params, pmd_valid_args); if (kvlist == NULL) @@ -447,7 +448,14 @@ pmd_parse_args(struct pmd_params *p, const char *params) /* Set default values */ memset(p, 0, sizeof(*p)); - p->firmware = SOFTNIC_FIRMWARE; + if (rte_strscpy(p->firmware, SOFTNIC_FIRMWARE, + sizeof(p->firmware)) < 0) { + PMD_LOG(WARNING, + "\"%s\": firmware path should be shorter than %zu", + SOFTNIC_FIRMWARE, sizeof(p->firmware)); + ret = -EINVAL; + goto out_free; + } p->cpu_id = SOFTNIC_CPU_ID; p->sc = SOFTNIC_SC; p->tm.n_queues = SOFTNIC_TM_N_QUEUES; @@ -468,11 +476,20 @@ pmd_parse_args(struct pmd_params *p, const char *params) /* Firmware script (optional) */ if (rte_kvargs_count(kvlist, PMD_PARAM_FIRMWARE) == 1) { ret = rte_kvargs_process(kvlist, PMD_PARAM_FIRMWARE, - &get_string, &p->firmware); + &get_string, &firmware); if (ret < 0) goto out_free; } - + if (rte_strscpy(p->firmware, firmware, + sizeof(p->firmware)) < 0) { + PMD_LOG(WARNING, + "\"%s\": firmware path should be shorter than %zu", + firmware, sizeof(p->firmware)); + free(firmware); + ret = -EINVAL; + goto out_free; + } + free(firmware); /* Connection listening port (optional) */ if (rte_kvargs_count(kvlist, PMD_PARAM_CONN_PORT) == 1) { ret = rte_kvargs_process(kvlist, PMD_PARAM_CONN_PORT, @@ -621,7 +638,12 @@ pmd_probe(struct rte_vdev_device *vdev) if (status) return status; - p.name = name; + if (rte_strscpy(p.name, name, sizeof(p.name)) < 0) { + PMD_LOG(WARNING, + "\"%s\": device name should be shorter than %zu", + name, sizeof(p.name)); + return -EINVAL; + } /* Allocate and initialize soft ethdev private data */ dev_private = pmd_init(&p); diff --git a/drivers/net/softnic/rte_eth_softnic_internals.h b/drivers/net/softnic/rte_eth_softnic_internals.h index 1b3186ef0b..07285ca315 100644 --- a/drivers/net/softnic/rte_eth_softnic_internals.h +++ b/drivers/net/softnic/rte_eth_softnic_internals.h @@ -28,14 +28,15 @@ #include "conn.h" #define NAME_SIZE 64 +#define SOFTNIC_PATH_MAX 4096 /** * PMD Parameters */ struct pmd_params { - const char *name; - const char *firmware; + char name[NAME_SIZE]; + char firmware[SOFTNIC_PATH_MAX]; uint16_t conn_port; uint32_t cpu_id; int sc; /**< Service cores. */ -- 2.20.1