[v1] net/mlx5: fix secondary process query stats segfault
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Commit Message
The "outer_of_buffer" counter is owned by the primary process devx
object and it is pointer by pointer in mlx5_priv structure. Actually,
there are 4 levels' pointers in this piece of code.
The secondary process can't access this part directly since it belongs
to another process' heap.
Return ENOTSUP as workaround.
Signed-off-by: Rongwei Liu <rongweil@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
Fixes: 750e48c7d ("common/mlx5: add DevX commands for queue counters")
Cc: matan@nvidia.com
Cc: stable@dpdk.org
---
drivers/net/mlx5/linux/mlx5_os.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
Comments
Hi,
> -----Original Message-----
> From: Rongwei Liu <rongweil@nvidia.com>
> Sent: Monday, January 22, 2024 9:44 AM
> To: dev@dpdk.org; Matan Azrad <matan@nvidia.com>; Slava Ovsiienko
> <viacheslavo@nvidia.com>; Ori Kam <orika@nvidia.com>; Suanming Mou
> <suanmingm@nvidia.com>; NBU-Contact-Thomas Monjalon (EXTERNAL)
> <thomas@monjalon.net>
> Cc: stable@dpdk.org; Anatoly Burakov <anatoly.burakov@intel.com>
> Subject: [PATCH v1] net/mlx5: fix secondary process query stats segfault
>
> The "outer_of_buffer" counter is owned by the primary process devx object
> and it is pointer by pointer in mlx5_priv structure. Actually, there are 4 levels'
> pointers in this piece of code.
>
> The secondary process can't access this part directly since it belongs to another
> process' heap.
[Fixed] typo = process' => process's
>
> Return ENOTSUP as workaround.
>
> Signed-off-by: Rongwei Liu <rongweil@nvidia.com>
> Acked-by: Matan Azrad <matan@nvidia.com>
> Fixes: 750e48c7d ("common/mlx5: add DevX commands for queue counters")
> Cc: matan@nvidia.com
> Cc: stable@dpdk.org[
[Fixed] fixes tag and CC should be before signed-off by tag.
Patch applied to next-net-mlx,
Kindest regards
Raslan Darawsheh
@@ -3192,9 +3192,15 @@ mlx5_os_read_dev_stat(struct mlx5_priv *priv, const char *ctr_name,
if (priv->sh) {
if (priv->q_counters != NULL &&
- strcmp(ctr_name, "out_of_buffer") == 0)
+ strcmp(ctr_name, "out_of_buffer") == 0) {
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ DRV_LOG(WARNING, "Devx out_of_buffer counter is not supported in the secondary process");
+ rte_errno = ENOTSUP;
+ return 1;
+ }
return mlx5_devx_cmd_queue_counter_query
(priv->q_counters, 0, (uint32_t *)stat);
+ }
MKSTR(path, "%s/ports/%d/hw_counters/%s",
priv->sh->ibdev_path,
priv->dev_port,