Fix segfault in redis_ippool_tool stats

diff --git a/src/modules/rlm_redis_ippool/rlm_redis_ippool_tool.c b/src/modules/rlm_redis_ippool/rlm_redis_ippool_tool.c
index 44cf27d5f17033c3f70d3d0b49296515b8665134..12b9ea48d857aafed13103503005b1ea72e061ba 100644 (file)
--- a/src/modules/rlm_redis_ippool/rlm_redis_ippool_tool.c
+++ b/src/modules/rlm_redis_ippool/rlm_redis_ippool_tool.c
@@ -862,12 +862,12 @@ static ssize_t driver_get_pools(TALLOC_CTX *ctx, uint8_t **out[], void *instance
        /*
         *      Sort the results
         */
-       {
+       if (used > 1) {
                uint8_t const **to_sort;
 
                memcpy(&to_sort, &result, sizeof(to_sort));
 
-               fr_quick_sort((void const **)to_sort, 0, used, pool_cmp);
+               fr_quick_sort((void const **)to_sort, 0, used - 1, pool_cmp);
        }
 
        *out = talloc_array(ctx, uint8_t *, used);