src: add xzalloc_array() and use it to allocate the expression hashtable

Otherwise, assertion to ensure that no colission occur is hit due to
uninitialized hashtable memory area:

nft: netlink_delinearize.c:1741: expr_handler_init: Assertion `expr_handle_ht[hash] == NULL' failed.

Fixes: c4058f96c6a5 ("netlink_delinearize: Fix suspicious calloc() call")
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
index 47f5b791..925841c5 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -50,6 +50,16 @@ void *xmalloc_array(size_t nmemb, size_t size)
 	return xmalloc(nmemb * size);
 }
 
+void *xzalloc_array(size_t nmemb, size_t size)
+{
+	void *ptr;
+
+	ptr = xmalloc_array(nmemb, size);
+	memset(ptr, 0, nmemb * size);
+
+	return ptr;
+}
+
 void *xrealloc(void *ptr, size_t size)
 {
 	ptr = realloc(ptr, size);