selftests: net: netlink-dumps: validation checks

The sanity checks are going to get silently cast to unsigned
and always pass. Cast the sizeof to signed size.

Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241115003248.733862-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c
index 7ee6dcd..84e29b7 100644 (file)
--- a/tools/testing/selftests/net/netlink-dumps.c
+++ b/tools/testing/selftests/net/netlink-dumps.c
@@ -56,10 +56,10 @@ TEST(test_sanity)
        ASSERT_EQ(n, sizeof(dump_policies));
 
        n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT);
-       ASSERT_GE(n, sizeof(struct nlmsghdr));
+       ASSERT_GE(n, (ssize_t)sizeof(struct nlmsghdr));
 
        n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT);
-       ASSERT_GE(n, sizeof(struct nlmsghdr));
+       ASSERT_GE(n, (ssize_t)sizeof(struct nlmsghdr));
 
        close(netlink_sock);
 }