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Raising the size of the buffer holding nl messages

Message ID 555DF3C8.10006@nokia.com
State Accepted, archived
Delegated to: stephen hemminger
Headers show

Commit Message

Jetchko Jekov May 21, 2015, 3:03 p.m. UTC
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Patch

From 68f0dda45a4f1bca070849f3f04a409de897ee0f Mon Sep 17 00:00:00 2001
From: Jetchko Jekov <jetchko.jekov@nokia.com>
Date: Thu, 21 May 2015 16:32:24 +0200
Subject: [PATCH] Raising the size of the buffer holding nl messages.

Now it matches the size for the answer defined in rtnl_talk()
and prevents stack corruption with answer > 1024 bytes.
---
 ip/link_gre.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ip/link_gre.c b/ip/link_gre.c
index 1d78387..1937261 100644
--- a/ip/link_gre.c
+++ b/ip/link_gre.c
@@ -53,7 +53,7 @@  static int gre_parse_opt(struct link_util *lu, int argc, char **argv,
 	struct {
 		struct nlmsghdr n;
 		struct ifinfomsg i;
-		char buf[1024];
+		char buf[16384];
 	} req;
 	struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1);
 	struct rtattr *tb[IFLA_MAX + 1];
-- 
2.1.0