Hi,
On 05/08/2025 4:20 PM, Maayan Kashani wrote:
This patch addresses AddressSanitizer (ASan) stack-use-after-scope
issues occurring during RSS flow creation in the MLX5 driver.
The root cause stemmed from the use of compound literals to
initialize flow action configurations, which could result in
pointers to temporary stack memory being retained in flow structures.
When these pointers were later accessed during flow conversion,
the underlying stack memory was no longer valid,
leading to ASAN-detected errors.
Modifications:
In mlx5_hw_rss_ptype_create_base_flow(),
the struct rte_flow_action_jump is now constructed
at the start of the function, rather than within the do statement.
This ensures a persistent stack allocation for the structure,
preventing use-after-scope situations.
This change eliminates the following ASan errors:
stack-use-after-scope reported in rte_flow_conv_copy
Fixes: ae67e3c43dd5 ("net/mlx5: support RSS expansion in non-template HWS
setup")
Cc: sta...@dpdk.org
Signed-off-by: Maayan Kashani <mkash...@nvidia.com>
Acked-by: Dariusz Sosnowski <dsosnow...@nvidia.com>
Patch applied to next-net-mlx,
Kindest regards
Raslan Darawsheh
