Unit test table_autotest results in segmentation fault.
Crash occurs in test_table_lpm_ipv6_combined().
Variable 'nht_pos0' used as array subscript is not initialized
in rte_table_lpm_ipv6_entry_add(). It will not be assigned,
if a rule does not exist.
In such case a junk number or invalid array index might result in
segmentation fault due to array out of bounds when
lpm->nht_users is used with such invalid array index.
Fix is to initialize the variables used for array subscript.
Fixes: d89a5bce1d ("lpm6: extend next hop field")
Cc: sta...@dpdk.org
Signed-off-by: Jananee Parthasarathy <jananeex.m.parthasara...@intel.com>
---
lib/librte_table/rte_table_lpm_ipv6.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_table/rte_table_lpm_ipv6.c
b/lib/librte_table/rte_table_lpm_ipv6.c
index a55f808a4..4e068d79b 100644
--- a/lib/librte_table/rte_table_lpm_ipv6.c
+++ b/lib/librte_table/rte_table_lpm_ipv6.c
@@ -182,7 +182,7 @@ rte_table_lpm_ipv6_entry_add(
struct rte_table_lpm_ipv6 *lpm = table;
struct rte_table_lpm_ipv6_key *ip_prefix =
key;
- uint32_t nht_pos, nht_pos0, nht_pos0_valid;
+ uint32_t nht_pos = 0, nht_pos0 = 0, nht_pos0_valid = 0;
int status;
/* Check input parameters */
--
2.14.1
