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net/mlx5: HWS, Fix uninitialized variables in mlx5hws_pat_calc_nop error flow

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In mlx5hws_pat_calc_nop(), src_field and dst_field are passed to
hws_action_modify_get_target_fields() which should set their values.
However, if an invalid action type is encountered, these variables
remain uninitialized and are later used to update prev_src_field
and prev_dst_field.

Initialize both variables to INVALID_FIELD to ensure they have
defined values in all code paths.

Fixes: 01e035fd03 ("net/mlx5: HWS, handle modify header actions dependency")
Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/20250825143435.598584-4-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lama Kayal 2025-08-25 17:34:26 +03:00 committed by Jakub Kicinski
parent a630f83592
commit 24b6e53140
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/steering/hws/pat_arg.c
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@ -527,7 +527,6 @@ int mlx5hws_pat_calc_nop(__be64 *pattern, size_t num_actions,
u32 *nop_locations, __be64 *new_pat)
{
u16 prev_src_field = INVALID_FIELD, prev_dst_field = INVALID_FIELD;
u16 src_field, dst_field;
u8 action_type;
bool dependent;
size_t i, j;
@ -539,6 +538,9 @@ int mlx5hws_pat_calc_nop(__be64 *pattern, size_t num_actions,
return 0;
for (i = 0, j = 0; i < num_actions; i++, j++) {
u16 src_field = INVALID_FIELD;
u16 dst_field = INVALID_FIELD;
if (j >= max_actions)
return -EINVAL;