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authorChuck Lever <chuck.lever@oracle.com>2007-09-11 18:00:20 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-10-09 17:16:42 -0400
commit06b8d2552d50f802a3277137a565febcd59ef037 (patch)
tree7b3b5d92e4a7a1bd8eff9e994a4c1899a8c35670 /net/sunrpc
parent6d0aa06afd62a868d83c6021335622a316469527 (diff)
SUNRPC: Make sure server name is reasonable before trying to print it
Check the length of the passed-in server name before trying to print it in the log. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/clnt.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index c3d571abcde..0357819ffdb 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -127,7 +127,14 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
struct rpc_clnt *clnt = NULL;
struct rpc_auth *auth;
int err;
- int len;
+ size_t len;
+
+ /* sanity check the name before trying to print it */
+ err = -EINVAL;
+ len = strlen(servname);
+ if (len > RPC_MAXNETNAMELEN)
+ goto out_no_rpciod;
+ len++;
dprintk("RPC: creating %s client for %s (xprt %p)\n",
program->name, servname, xprt);
@@ -148,7 +155,6 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
clnt->cl_parent = clnt;
clnt->cl_server = clnt->cl_inline_name;
- len = strlen(servname) + 1;
if (len > sizeof(clnt->cl_inline_name)) {
char *buf = kmalloc(len, GFP_KERNEL);
if (buf != 0)