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authorDavid Howells <dhowells@redhat.com>2009-02-06 21:50:52 -0800
committerDavid S. Miller <davem@davemloft.net>2009-02-06 21:50:52 -0800
commit15bde72738f373aa060ececeda8e064e4f924360 (patch)
tree9f13defd4cbdfff49b1e39a0ac43b9df4c4581de /net
parent355423d0849f4506bc71ab2738d38cb74429aaef (diff)
downloadlinux-2.6.38-lt-ux500-15bde72738f373aa060ececeda8e064e4f924360.tar.gz
RxRPC: Fix a potential NULL dereference
Fix a potential NULL dereference bug during error handling in rxrpc_kernel_begin_call(), whereby rxrpc_put_transport() may be handed a NULL pointer. This was found with a code checker (http://repo.or.cz/w/smatch.git/). Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/rxrpc/af_rxrpc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index d7d2bed7a69..eac5e7bb736 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -284,13 +284,13 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
if (IS_ERR(trans)) {
call = ERR_CAST(trans);
trans = NULL;
- goto out;
+ goto out_notrans;
}
} else {
trans = rx->trans;
if (!trans) {
call = ERR_PTR(-ENOTCONN);
- goto out;
+ goto out_notrans;
}
atomic_inc(&trans->usage);
}
@@ -315,6 +315,7 @@ struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
rxrpc_put_bundle(trans, bundle);
out:
rxrpc_put_transport(trans);
+out_notrans:
release_sock(&rx->sk);
_leave(" = %p", call);
return call;