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bier: fix vector size confusing ASan

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The vector is initialized to 1024 entries which is guaranteed to be
enough, but as its size can shrink between calls, make sure ASan is
aware of the expected size before using it.

Type: fix

Change-Id: I4bcc39867a886b3cb463854d2cda0b32155650e9
Signed-off-by: Benoît Ganne <bganne@cisco.com>
This commit is contained in:
Benoît Ganne
2020-04-16 12:40:54 +02:00
committed by Neale Ranns
parent bd7f3422bb
commit 77100efb37
1 changed files with 2 additions and 1 deletions
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3
src/vnet/bier/bier_lookup.c
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@ -219,15 +219,16 @@ bier_lookup (vlib_main_t * vm,
if (PREDICT_TRUE(0 != n_clones))
{
vec_set_len(blm->blm_clones[thread_index], n_clones);
num_cloned = vlib_buffer_clone(vm, bi0,
blm->blm_clones[thread_index],
n_clones,
VLIB_BUFFER_CLONE_HEAD_SIZE);
vec_set_len(blm->blm_clones[thread_index], num_cloned);
if (num_cloned != n_clones)
{
vec_set_len(blm->blm_clones[thread_index], num_cloned);
vlib_node_increment_counter
(vm, node->node_index,
BIER_LOOKUP_ERROR_BUFFER_ALLOCATION_FAILURE, 1);