netdev - [PATCH net-next 1/6] tcp_metrics: panic when tcp

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Message-ID: <874mpu10xt.fsf_-_@x220.int.ebiederm.org>
Date:	Mon, 09 Mar 2015 13:27:10 -0500
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	David Miller <davem@...emloft.net>
Cc:	edumazet@...gle.com, netdev@...r.kernel.org,
	stephen@...workplumber.org, nicolas.dichtel@...nd.com,
	roopa@...ulusnetworks.com, hannes@...essinduktion.org,
	ddutt@...ulusnetworks.com, vipin@...ulusnetworks.com,
	shmulik.ladkani@...il.com, dsahern@...il.com
Subject: [PATCH net-next 1/6] tcp_metrics: panic when tcp_metrics can not be allocated


Panic so that in the unlikely event we have problems we will have a
clear place to start debugging instead of a mysterious NULL pointer
deference later on.

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 net/ipv4/tcp_metrics.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index e5f41bd5ec1b..fdf4bdda971f 100644
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -1186,5 +1186,6 @@ cleanup_subsys:
 	unregister_pernet_subsys(&tcp_net_metrics_ops);
 
 cleanup:
+	panic("Could not allocate the tcp_metrics hash table\n");
 	return;
 }
-- 
2.2.1

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