[PATCH v2 35/44] crypto/scheduler: fix segment fault when parse devargs

[Chengwen Feng]

The rte_kvargs_process() was used to parse KV pairs, it also supports
to parse 'only keys' (e.g. socket_id) type. And the callback function
parameter 'value' is NULL when parsed 'only keys'.

This patch fixes segment fault when parse input args with 'only keys'.

Fixes: 503e9c5afb38 ("crypto/scheduler: register as vdev driver")
Fixes: 4c07e0552f0a ("crypto/scheduler: add multicore scheduling mode")
Fixes: a0e805ee086a ("crypto/scheduler: add more options")
Fixes: ee9586dd15fb ("crypto/scheduler: add mode-specific parameter")
Cc: sta...@dpdk.org

Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
---
 drivers/crypto/scheduler/scheduler_pmd.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/crypto/scheduler/scheduler_pmd.c 
b/drivers/crypto/scheduler/scheduler_pmd.c
index 9d1ce46622..7fa8bef4f2 100644
--- a/drivers/crypto/scheduler/scheduler_pmd.c
+++ b/drivers/crypto/scheduler/scheduler_pmd.c
@@ -272,6 +272,9 @@ parse_integer_arg(const char *key __rte_unused,
 {
        int *i = (int *) extra_args;
 
+       if (value == NULL)
+               return -EINVAL;
+
        *i = atoi(value);
        if (*i < 0) {
                CR_SCHED_LOG(ERR, "Argument has to be positive.");
@@ -338,6 +341,9 @@ parse_corelist_arg(const char *key __rte_unused,
 {
        struct scheduler_init_params *params = extra_args;
 
+       if (value == NULL)
+               return -EINVAL;
+
        params->nb_wc = 0;
 
        const char *token = value;
@@ -367,6 +373,9 @@ parse_name_arg(const char *key __rte_unused,
 {
        struct rte_cryptodev_pmd_init_params *params = extra_args;
 
+       if (value == NULL)
+               return -EINVAL;
+
        if (strlen(value) >= RTE_CRYPTODEV_NAME_MAX_LEN - 1) {
                CR_SCHED_LOG(ERR, "Invalid name %s, should be less than "
                                "%u bytes.", value,
@@ -386,6 +395,9 @@ parse_worker_arg(const char *key __rte_unused,
 {
        struct scheduler_init_params *param = extra_args;
 
+       if (value == NULL)
+               return -EINVAL;
+
        if (param->nb_workers >= RTE_CRYPTODEV_SCHEDULER_MAX_NB_WORKERS) {
                CR_SCHED_LOG(ERR, "Too many workers.");
                return -ENOMEM;
@@ -404,6 +416,9 @@ parse_mode_arg(const char *key __rte_unused,
        struct scheduler_init_params *param = extra_args;
        uint32_t i;
 
+       if (value == NULL)
+               return -EINVAL;
+
        for (i = 0; i < RTE_DIM(scheduler_mode_map); i++) {
                if (strcmp(value, scheduler_mode_map[i].name) == 0) {
                        param->mode = (enum rte_cryptodev_scheduler_mode)
@@ -427,6 +442,9 @@ parse_mode_param_arg(const char *key __rte_unused,
 {
        struct scheduler_init_params *param = extra_args;
 
+       if (value == NULL)
+               return -EINVAL;
+
        strlcpy(param->mode_param_str, value,
                        RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN);
 
@@ -440,6 +458,9 @@ parse_ordering_arg(const char *key __rte_unused,
        struct scheduler_init_params *param = extra_args;
        uint32_t i;
 
+       if (value == NULL)
+               return -EINVAL;
+
        for (i = 0; i < RTE_DIM(scheduler_ordering_map); i++) {
                if (strcmp(value, scheduler_ordering_map[i].name) == 0) {
                        param->enable_ordering =
-- 
2.17.1