This is a note to let you know that I've just added the patch titled
ipv6: fib: hide unused 'pn' variable
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ipv6-fib-hide-unused-pn-variable.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 763af1b0eeae94b2333679890bef1039b8a08d33
Author: Arnd Bergmann <arnd@xxxxxxxx>
Date: Mon Apr 8 09:42:02 2024 +0200
ipv6: fib: hide unused 'pn' variable
[ Upstream commit 74043489fcb5e5ca4074133582b5b8011b67f9e7 ]
When CONFIG_IPV6_SUBTREES is disabled, the only user is hidden, causing
a 'make W=1' warning:
net/ipv6/ip6_fib.c: In function 'fib6_add':
net/ipv6/ip6_fib.c:1388:32: error: variable 'pn' set but not used [-Werror=unused-but-set-variable]
Add another #ifdef around the variable declaration, matching the other
uses in this file.
Fixes: 66729e18df08 ("[IPV6] ROUTE: Make sure we have fn->leaf when adding a node on subtree.")
Link: https://lore.kernel.org/netdev/20240322131746.904943-1-arnd@xxxxxxxxxx/
Reviewed-by: David Ahern <dsahern@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240408074219.3030256-1-arnd@xxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 63fb9e01eb4e1..844a5ee7f76f2 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1226,7 +1226,10 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt,
struct nl_info *info, struct netlink_ext_ack *extack)
{
struct fib6_table *table = rt->fib6_table;
- struct fib6_node *fn, *pn = NULL;
+ struct fib6_node *fn;
+#ifdef CONFIG_IPV6_SUBTREES
+ struct fib6_node *pn = NULL;
+#endif
int err = -ENOMEM;
int allow_create = 1;
int replace_required = 0;
@@ -1251,9 +1254,9 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt,
goto out;
}
+#ifdef CONFIG_IPV6_SUBTREES
pn = fn;
-#ifdef CONFIG_IPV6_SUBTREES
if (rt->fib6_src.plen) {
struct fib6_node *sn;
