1 files changed, 51 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0101-wireguard-selftests-initalize-ipv6-members-to-NULL-t.patch b/target/linux/generic/backport-5.4/080-wireguard-0101-wireguard-selftests-initalize-ipv6-members-to-NULL-t.patch
new file mode 100644
index 0000000000..3d57857ae4
--- /dev/null
+++ b/target/linux/generic/backport-5.4/080-wireguard-0101-wireguard-selftests-initalize-ipv6-members-to-NULL-t.patch
@@ -0,0 +1,51 @@
+From 7b7da251149dd5fd070255dbf45f8e4f5c2110b8 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Wed, 6 May 2020 15:33:05 -0600
+Subject: [PATCH 101/124] wireguard: selftests: initalize ipv6 members to NULL
+ to squelch clang warning
+
+commit 4fed818ef54b08d4b29200e416cce65546ad5312 upstream.
+
+Without setting these to NULL, clang complains in certain
+configurations that have CONFIG_IPV6=n:
+
+In file included from drivers/net/wireguard/ratelimiter.c:223:
+drivers/net/wireguard/selftest/ratelimiter.c:173:34: error: variable 'skb6' is uninitialized when used here [-Werror,-Wuninitialized]
+                ret = timings_test(skb4, hdr4, skb6, hdr6, &test_count);
+                                               ^~~~
+drivers/net/wireguard/selftest/ratelimiter.c:123:29: note: initialize the variable 'skb6' to silence this warning
+        struct sk_buff *skb4, *skb6;
+                                   ^
+                                    = NULL
+drivers/net/wireguard/selftest/ratelimiter.c:173:40: error: variable 'hdr6' is uninitialized when used here [-Werror,-Wuninitialized]
+                ret = timings_test(skb4, hdr4, skb6, hdr6, &test_count);
+                                                     ^~~~
+drivers/net/wireguard/selftest/ratelimiter.c:125:22: note: initialize the variable 'hdr6' to silence this warning
+        struct ipv6hdr *hdr6;
+                            ^
+
+We silence this warning by setting the variables to NULL as the warning
+suggests.
+
+Reported-by: Arnd Bergmann <arnd@arndb.de>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+---
+ drivers/net/wireguard/selftest/ratelimiter.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/wireguard/selftest/ratelimiter.c
++++ b/drivers/net/wireguard/selftest/ratelimiter.c
+@@ -120,9 +120,9 @@ bool __init wg_ratelimiter_selftest(void
+ 	enum { TRIALS_BEFORE_GIVING_UP = 5000 };
+ 	bool success = false;
+ 	int test = 0, trials;
+-	struct sk_buff *skb4, *skb6;
++	struct sk_buff *skb4, *skb6 = NULL;
+ 	struct iphdr *hdr4;
+-	struct ipv6hdr *hdr6;
++	struct ipv6hdr *hdr6 = NULL;
+ 
+ 	if (IS_ENABLED(CONFIG_KASAN) || IS_ENABLED(CONFIG_UBSAN))
+ 		return true;