classify: crash on classify filter pcap del command
If classify pcap filter was never configured, typing the delete
command causes a crash. The reason is
cm->classify_table_index_by_sw_if_index not yet allocated.
The fix is to add a check before we access the vector.
Type: fix
Fixes: gerrit 28475
Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: Ia33bd91fa82d8ffc4490d4069155980a6e233268
diff --git a/src/vnet/classify/vnet_classify.c b/src/vnet/classify/vnet_classify.c
index 7e239cc..ca34eec 100644
--- a/src/vnet/classify/vnet_classify.c
+++ b/src/vnet/classify/vnet_classify.c
@@ -1786,7 +1786,8 @@
* Put the table index where device drivers can find them.
* This table index will be either a valid table or a ~0 to clear it.
*/
- cm->classify_table_index_by_sw_if_index[sw_if_index] = table_index;
+ if (vec_len (cm->classify_table_index_by_sw_if_index) > sw_if_index)
+ cm->classify_table_index_by_sw_if_index[sw_if_index] = table_index;
if (sw_if_index > 0)
{
vnet_hw_interface_t *hi;