From f6dab7489e17d8cb6758c07fd2cecf42c6b5b9a0 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Fri, 18 Dec 2020 13:12:09 +0900
Subject: [PATCH] sd-netlink: add several assertions

---
 src/libsystemd/sd-netlink/netlink-socket.c | 3 ++-
 src/libsystemd/sd-netlink/sd-netlink.c     | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libsystemd/sd-netlink/netlink-socket.c b/src/libsystemd/sd-netlink/netlink-socket.c
index f1d24a6989..9e8dff1a72 100644
--- a/src/libsystemd/sd-netlink/netlink-socket.c
+++ b/src/libsystemd/sd-netlink/netlink-socket.c
@@ -244,7 +244,8 @@ int socket_writev_message(sd_netlink *nl, sd_netlink_message **m, size_t msgcoun
         size_t i;
 
         assert(nl);
-        assert(msgcount);
+        assert(m);
+        assert(msgcount > 0);
 
         iovs = new0(struct iovec, msgcount);
         if (!iovs)
diff --git a/src/libsystemd/sd-netlink/sd-netlink.c b/src/libsystemd/sd-netlink/sd-netlink.c
index 8a419c5ed2..db9fcd79dd 100644
--- a/src/libsystemd/sd-netlink/sd-netlink.c
+++ b/src/libsystemd/sd-netlink/sd-netlink.c
@@ -237,6 +237,7 @@ int sd_netlink_sendv(sd_netlink *nl,
         assert_return(nl, -EINVAL);
         assert_return(!rtnl_pid_changed(nl), -ECHILD);
         assert_return(messages, -EINVAL);
+        assert_return(msgcount > 0, -EINVAL);
 
         if (ret_serial) {
                 serials = new0(uint32_t, msgcount);