tainted_data_downcast: Downcasting match_item->meta from void * to
struct virtchnl_proto_hdrs implies that the data that this pointer points
to is tainted.
var_assign_var: Assigning: proto_hdrs = match_item->meta.
Both are now tainted.
var_assign_var: Assigning: rss_meta->proto_hdrs = *proto_hdrs. Both are
now tainted.
Passing tainted expression "rss_meta->proto_hdrs.count" to
"iavf_refine_proto_hdrs", which uses it as a loop boundary.
Removed temporary variable 'proto_hdrs', and copied whole memory of
match_item meta with exact structure size to avoid data downcast.
Coverity issue: 381131
Fixes: 91f27b2e39 ("net/iavf: refactor RSS")
Cc: stable@dpdk.org
Signed-off-by: Steve Yang <stevex.yang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
b125c0e721