From: Daniel Borkmann <dborkman@redhat.com>
Date: Thu, 7 Feb 2013 00:55:37 +0000 (+0000)
Subject: net: sctp: sctp_auth_key_put: use kzfree instead of kfree
X-Git-Tag: v3.8-rc7~2^2~4
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=586c31f3bf04c290dc0a0de7fc91d20aa9a5ee53;p=linux.git

net: sctp: sctp_auth_key_put: use kzfree instead of kfree

For sensitive data like keying material, it is common practice to zero
out keys before returning the memory back to the allocator. Thus, use
kzfree instead of kfree.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 159b9bc5d633..d8420ae614dc 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -71,7 +71,7 @@ void sctp_auth_key_put(struct sctp_auth_bytes *key)
 		return;
 
 	if (atomic_dec_and_test(&key->refcnt)) {
-		kfree(key);
+		kzfree(key);
 		SCTP_DBG_OBJCNT_DEC(keys);
 	}
 }