From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [PATCH] Fix for possible null pointer dereference in auth.c Date: Fri, 16 May 2014 16:19:39 +0400 Message-ID: <5376025B.6010202@cogentembedded.com> References: <1400190998-28153-1-git-send-email-rickard_strandqvist@spectrumdigital.se> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: "David S. Miller" , linux-nfs@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: Rickard Strandqvist , "J. Bruce Fields" , Trond Myklebust Return-path: In-Reply-To: <1400190998-28153-1-git-send-email-rickard_strandqvist@spectrumdigital.se> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hello. On 16-05-2014 1:56, Rickard Strandqvist wrote: > There is otherwise a risk of a possible null pointer dereference. > Was largely found by using a static code analysis program called cppc= heck. > Signed-off-by: Rickard Strandqvist > --- > net/sunrpc/auth.c | 10 +++++++--- > 1 fil =C3=A4ndrad, 7 till=C3=A4gg(+), 3 borttagningar(-) > diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c > index 5285ead..3a55698 100644 > --- a/net/sunrpc/auth.c > +++ b/net/sunrpc/auth.c > @@ -801,10 +801,14 @@ rpcauth_invalcred(struct rpc_task *task) > { > struct rpc_cred *cred =3D task->tk_rqstp->rq_cred; > > - dprintk("RPC: %5u invalidating %s cred %p\n", > - task->tk_pid, cred->cr_auth->au_ops->au_name, cred); > - if (cred) > + if (cred) { > + dprintk("RPC: %5u invalidating %s cred %p\n", > + task->tk_pid, cred->cr_auth->au_ops->au_name, cred); > + > clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); > + } > + else } and *else* should be on the same line, and there should be {} in = the=20 *else* arm since there's {} in the *if* arm already, according to=20 Documentation/CodingStyle. > + dprintk("RPC: %5u invalidating is NULL\n", task->tk_pid); That's not a proper English, I'm afraid. > } WBR, Sergei