[PATCH v1 7/9] baseband/acc: fix potential arithmetic overflow Fix potential issue of overflow causing coverity warning.

[Maxime Coquelin]

There seems to be formatting issue of the commit log,
the commit message is appended to the title.


On 2/9/23 23:19, Nicolas Chautru wrote:
> Coverity issue: 383154
> Fixes: 8e16839937 ("baseband/acc: extension of the device structure")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Nicolas Chautru <nicolas.chautru at intel.com>
> ---
>   drivers/baseband/acc/rte_vrb_pmd.c | 2 +-
>   drivers/baseband/acc/vrb_pmd.h     | 1 +
>   2 files changed, 2 insertions(+), 1 deletion(-)

With commit log fixed:

Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

Thanks,
Maxime


> diff --git a/drivers/baseband/acc/rte_vrb_pmd.c b/drivers/baseband/acc/rte_vrb_pmd.c
> index 0bd5c65177..8fcb06b4ff 100644
> --- a/drivers/baseband/acc/rte_vrb_pmd.c
> +++ b/drivers/baseband/acc/rte_vrb_pmd.c
> @@ -518,7 +518,7 @@ vrb_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id)
>   	if (d->tail_ptrs == NULL)
>   		d->tail_ptrs = rte_zmalloc_socket(
>   				dev->device->driver->name,
> -				d->num_qgroups * d->num_aqs * sizeof(uint32_t),
> +				VRB_MAX_QGRPS * VRB_MAX_AQS * sizeof(uint32_t),
>   				RTE_CACHE_LINE_SIZE, socket_id);
>   	if (d->tail_ptrs == NULL) {
>   		rte_bbdev_log(ERR, "Failed to allocate tail ptr for %s:%u",
> diff --git a/drivers/baseband/acc/vrb_pmd.h b/drivers/baseband/acc/vrb_pmd.h
> index f3c9239881..01028273e7 100644
> --- a/drivers/baseband/acc/vrb_pmd.h
> +++ b/drivers/baseband/acc/vrb_pmd.h
> @@ -36,6 +36,7 @@
>   
>   #define VRB_NUM_ACCS                 6
>   #define VRB_MAX_QGRPS                32
> +#define VRB_MAX_AQS                  32
>   
>   #define ACC_STATUS_WAIT      10
>   #define ACC_STATUS_TO        100