Hi Kevin,
> -----Original Message-----
> From: Kevin Traynor <ktray...@redhat.com>
> Sent: Tuesday, February 22, 2022 3:39 PM
> To: Jerin Jacob <jerinjac...@gmail.com>; Jayatheerthan, Jay
> <jay.jayatheert...@intel.com>
> Cc: Weiguo Li <liw...@foxmail.com>; Kundapura, Ganapati
> <ganapati.kundap...@intel.com>; Naga Harish K, S V
> <s.v.naga.haris...@intel.com>; step...@networkplumber.org; dev@dpdk.org
> Subject: Re: [PATCH v6] eventdev/eth_rx: fix memory leak when token parsing
> finished
>
> On 18/02/2022 09:39, Jerin Jacob wrote:
> > On Fri, Feb 4, 2022 at 3:17 PM Jayatheerthan, Jay
> > <jay.jayatheert...@intel.com> wrote:
> >>
> >> Looks good. Thanks Weiguo for posting this patch and addressing all the
> comments!
> >>
> >> Acked-by: Jay Jayatheerthan < jay.jayatheert...@intel.com>
> >
> > Applied to dpdk-next-net-eventdev/for-main. Thanks
> >
> >
> >>
> >> -Jay
> >>
> >>
> >>
> >>> -----Original Message-----
> >>> From: Weiguo Li <liw...@foxmail.com>
> >>> Sent: Friday, February 4, 2022 1:51 PM
> >>> To: Jayatheerthan, Jay <jay.jayatheert...@intel.com>
> >>> Cc: Kundapura, Ganapati <ganapati.kundap...@intel.com>; Naga Harish
> >>> K, S V <s.v.naga.haris...@intel.com>; step...@networkplumber.org;
> >>> dev@dpdk.org
> >>> Subject: [PATCH v6] eventdev/eth_rx: fix memory leak when token
> >>> parsing finished
> >>>
> >>> The memory get from strdup should be freed when parameter parsing
> >>> finished, and also should be freed when error occurs.
> >>>
> >>> Fixes: 814d01709328 ("eventdev/eth_rx: support telemetry")
> >>> Fixes: 9e583185318f ("eventdev/eth_rx: support telemetry")
> >>>
>
> No stable tag - is it wanted for relevant stable branches?
>
Yes, this patch need to be included in relevant stable releases.
> >>> Signed-off-by: Weiguo Li <liw...@foxmail.com>
> >>> Acked-by: Ganapati Kundapura <ganapati.kundap...@intel.com>
> >>>
> >>> ---
> >>> v6:
> >>> * fix double free problem in v5 as Jay noted
> >>> v5:
> >>> * fix according to Jay's comment.
> >>> * fix anothor bypassing the freeing of memory problem
> >>> v4:
> >>> * fix compilation issue
> >>> v3:
> >>> * validate "eth_dev_id" by rte_eth_dev_is_valid_port()
> >>> as Ganapati's comment.
> >>> * validate "token" by macros to reduce code redundancy.
> >>> * use new macros to avoid bypassing the freeing of memory problem.
> >>> v2:
> >>> * add memory check after strdup
> >>> ---
> >>> lib/eventdev/rte_event_eth_rx_adapter.c | 96 ++++++++++++++++++-------
> >>> 1 file changed, 72 insertions(+), 24 deletions(-)
> >>>
> >>> diff --git a/lib/eventdev/rte_event_eth_rx_adapter.c
> >>> b/lib/eventdev/rte_event_eth_rx_adapter.c
> >>> index ae1e260c08..4da6f1ff90 100644
> >>> --- a/lib/eventdev/rte_event_eth_rx_adapter.c
> >>> +++ b/lib/eventdev/rte_event_eth_rx_adapter.c
> >>> @@ -293,6 +293,30 @@ rxa_event_buf_get(struct event_eth_rx_adapter
> *rx_adapter, uint16_t eth_dev_id,
> >>> } \
> >>> } while (0)
> >>>
> >>> +#define RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_GOTO_ERR_RET(id,
> retval) do { \
> >>> + if (!rxa_validate_id(id)) { \
> >>> + RTE_EDEV_LOG_ERR("Invalid eth Rx adapter id = %d\n", id); \
> >>> + ret = retval; \
> >>> + goto error; \
> >>> + } \
> >>> +} while (0)
> >>> +
> >>> +#define
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> retval) do { \
> >>> + if ((token) == NULL || strlen(token) == 0 || !isdigit(*token)) { \
> >>> + RTE_EDEV_LOG_ERR("Invalid eth Rx adapter token\n"); \
> >>> + ret = retval; \
> >>> + goto error; \
> >>> + } \
> >>> +} while (0)
> >>> +
> >>> +#define RTE_ETH_VALID_PORTID_OR_GOTO_ERR_RET(port_id, retval) do
> { \
> >>> + if (!rte_eth_dev_is_valid_port(port_id)) { \
> >>> + RTE_ETHDEV_LOG(ERR, "Invalid port_id=%u\n", port_id); \
> >>> + ret = retval; \
> >>> + goto error; \
> >>> + } \
> >>> +} while (0)
> >>> +
> >>> static inline int
> >>> rxa_sw_adapter_queue_count(struct event_eth_rx_adapter *rx_adapter)
> >>> {
> >>> @@ -3323,7 +3347,7 @@ handle_rxa_get_queue_conf(const char *cmd
> __rte_unused,
> >>> {
> >>> uint8_t rx_adapter_id;
> >>> uint16_t rx_queue_id;
> >>> - int eth_dev_id;
> >>> + int eth_dev_id, ret = -1;
> >>> char *token, *l_params;
> >>> struct rte_event_eth_rx_adapter_queue_conf queue_conf;
> >>>
> >>> @@ -3332,33 +3356,37 @@ handle_rxa_get_queue_conf(const char *cmd
> >>> __rte_unused,
> >>>
> >>> /* Get Rx adapter ID from parameter string */
> >>> l_params = strdup(params);
> >>> + if (l_params == NULL)
> >>> + return -ENOMEM;
> >>> token = strtok(l_params, ",");
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>> rx_adapter_id = strtoul(token, NULL, 10);
> >>> - RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(rx_adapter_id,
> -EINVAL);
> >>> +
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_GOTO_ERR_RET(rx_adapter_id,
> >>> + -EINVAL);
> >>>
> >>> token = strtok(NULL, ",");
> >>> - if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> >>> - return -1;
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>>
> >>> /* Get device ID from parameter string */
> >>> eth_dev_id = strtoul(token, NULL, 10);
> >>> - RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(eth_dev_id, -EINVAL);
> >>> + RTE_ETH_VALID_PORTID_OR_GOTO_ERR_RET(eth_dev_id, -EINVAL);
> >>>
> >>> token = strtok(NULL, ",");
> >>> - if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> >>> - return -1;
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>>
> >>> /* Get Rx queue ID from parameter string */
> >>> rx_queue_id = strtoul(token, NULL, 10);
> >>> if (rx_queue_id >= rte_eth_devices[eth_dev_id].data->nb_rx_queues)
> >>> {
> >>> RTE_EDEV_LOG_ERR("Invalid rx queue_id %u", rx_queue_id);
> >>> - return -EINVAL;
> >>> + ret = -EINVAL;
> >>> + goto error;
> >>> }
> >>>
> >>> token = strtok(NULL, "\0");
> >>> if (token != NULL)
> >>> RTE_EDEV_LOG_ERR("Extra parameters passed to eventdev"
> >>> " telemetry command, ignoring");
> >>> + /* Parsing parameter finished */
> >>> + free(l_params);
> >>>
> >>> if (rte_event_eth_rx_adapter_queue_conf_get(rx_adapter_id,
> eth_dev_id,
> >>> rx_queue_id,
> >>> &queue_conf)) { @@ -3378,6 +3406,10 @@
> handle_rxa_get_queue_conf(const char *cmd __rte_unused,
> >>> RXA_ADD_DICT(queue_conf.ev, flow_id);
> >>>
> >>> return 0;
> >>> +
> >>> +error:
> >>> + free(l_params);
> >>> + return ret;
> >>> }
> >>>
> >>> static int
> >>> @@ -3387,7 +3419,7 @@ handle_rxa_get_queue_stats(const char *cmd
> __rte_unused,
> >>> {
> >>> uint8_t rx_adapter_id;
> >>> uint16_t rx_queue_id;
> >>> - int eth_dev_id;
> >>> + int eth_dev_id, ret = -1;
> >>> char *token, *l_params;
> >>> struct rte_event_eth_rx_adapter_queue_stats q_stats;
> >>>
> >>> @@ -3396,33 +3428,37 @@ handle_rxa_get_queue_stats(const char *cmd
> >>> __rte_unused,
> >>>
> >>> /* Get Rx adapter ID from parameter string */
> >>> l_params = strdup(params);
> >>> + if (l_params == NULL)
> >>> + return -ENOMEM;
> >>> token = strtok(l_params, ",");
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>> rx_adapter_id = strtoul(token, NULL, 10);
> >>> - RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(rx_adapter_id,
> -EINVAL);
> >>> +
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_GOTO_ERR_RET(rx_adapter_id,
> >>> + -EINVAL);
> >>>
> >>> token = strtok(NULL, ",");
> >>> - if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> >>> - return -1;
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>>
> >>> /* Get device ID from parameter string */
> >>> eth_dev_id = strtoul(token, NULL, 10);
> >>> - RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(eth_dev_id, -EINVAL);
> >>> + RTE_ETH_VALID_PORTID_OR_GOTO_ERR_RET(eth_dev_id, -EINVAL);
> >>>
> >>> token = strtok(NULL, ",");
> >>> - if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> >>> - return -1;
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>>
> >>> /* Get Rx queue ID from parameter string */
> >>> rx_queue_id = strtoul(token, NULL, 10);
> >>> if (rx_queue_id >= rte_eth_devices[eth_dev_id].data->nb_rx_queues)
> >>> {
> >>> RTE_EDEV_LOG_ERR("Invalid rx queue_id %u", rx_queue_id);
> >>> - return -EINVAL;
> >>> + ret = -EINVAL;
> >>> + goto error;
> >>> }
> >>>
> >>> token = strtok(NULL, "\0");
> >>> if (token != NULL)
> >>> RTE_EDEV_LOG_ERR("Extra parameters passed to eventdev"
> >>> " telemetry command, ignoring");
> >>> + /* Parsing parameter finished */
> >>> + free(l_params);
> >>>
> >>> if (rte_event_eth_rx_adapter_queue_stats_get(rx_adapter_id,
> eth_dev_id,
> >>> rx_queue_id,
> >>> &q_stats)) { @@ -3441,6 +3477,10 @@ handle_rxa_get_queue_stats(const
> char *cmd __rte_unused,
> >>> RXA_ADD_DICT(q_stats, rx_dropped);
> >>>
> >>> return 0;
> >>> +
> >>> +error:
> >>> + free(l_params);
> >>> + return ret;
> >>> }
> >>>
> >>> static int
> >>> @@ -3450,7 +3490,7 @@ handle_rxa_queue_stats_reset(const char *cmd
> __rte_unused,
> >>> {
> >>> uint8_t rx_adapter_id;
> >>> uint16_t rx_queue_id;
> >>> - int eth_dev_id;
> >>> + int eth_dev_id, ret = -1;
> >>> char *token, *l_params;
> >>>
> >>> if (params == NULL || strlen(params) == 0 ||
> >>> !isdigit(*params)) @@ -3458,33 +3498,37 @@
> >>> handle_rxa_queue_stats_reset(const char *cmd __rte_unused,
> >>>
> >>> /* Get Rx adapter ID from parameter string */
> >>> l_params = strdup(params);
> >>> + if (l_params == NULL)
> >>> + return -ENOMEM;
> >>> token = strtok(l_params, ",");
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>> rx_adapter_id = strtoul(token, NULL, 10);
> >>> - RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(rx_adapter_id,
> -EINVAL);
> >>> +
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_GOTO_ERR_RET(rx_adapter_id,
> >>> + -EINVAL);
> >>>
> >>> token = strtok(NULL, ",");
> >>> - if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> >>> - return -1;
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>>
> >>> /* Get device ID from parameter string */
> >>> eth_dev_id = strtoul(token, NULL, 10);
> >>> - RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(eth_dev_id, -EINVAL);
> >>> + RTE_ETH_VALID_PORTID_OR_GOTO_ERR_RET(eth_dev_id, -EINVAL);
> >>>
> >>> token = strtok(NULL, ",");
> >>> - if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> >>> - return -1;
> >>> +
> RTE_EVENT_ETH_RX_ADAPTER_TOKEN_VALID_OR_GOTO_ERR_RET(token,
> >>> + -1);
> >>>
> >>> /* Get Rx queue ID from parameter string */
> >>> rx_queue_id = strtoul(token, NULL, 10);
> >>> if (rx_queue_id >= rte_eth_devices[eth_dev_id].data->nb_rx_queues)
> >>> {
> >>> RTE_EDEV_LOG_ERR("Invalid rx queue_id %u", rx_queue_id);
> >>> - return -EINVAL;
> >>> + ret = -EINVAL;
> >>> + goto error;
> >>> }
> >>>
> >>> token = strtok(NULL, "\0");
> >>> if (token != NULL)
> >>> RTE_EDEV_LOG_ERR("Extra parameters passed to eventdev"
> >>> " telemetry command, ignoring");
> >>> + /* Parsing parameter finished */
> >>> + free(l_params);
> >>>
> >>> if (rte_event_eth_rx_adapter_queue_stats_reset(rx_adapter_id,
> >>> eth_dev_id, @@
> >>> -3494,6 +3538,10 @@ handle_rxa_queue_stats_reset(const char *cmd
> __rte_unused,
> >>> }
> >>>
> >>> return 0;
> >>> +
> >>> +error:
> >>> + free(l_params);
> >>> + return ret;
> >>> }
> >>>
> >>> RTE_INIT(rxa_init_telemetry)
> >>> --
> >>> 2.25.1
> >>
> >
>
