On Sat, May 17, 2014 at 12:36 PM, Rickard Strandqvist
<rickard_strandqvist@xxxxxxxxxxxxxxxxxx> wrote:
> Hi
>
> I have made a new patch according Sergei specification.
>
I'll be happy to apply this patch once someone explains to me why we
can't just remove that check for cred != NULL, however I'm not
applying a patch purely in order to silence a warning from cppcheck.
Cheers,
Trond
> But there remains Tronds question though.
>
> Best regards
> Rickard Strandqvist
>
>
> 2014-05-16 14:19 GMT+02:00 Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>:
>> 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 cppcheck.
>>
>>
>>> Signed-off-by: Rickard Strandqvist
>>> <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
>>> ---
>>> net/sunrpc/auth.c | 10 +++++++---
>>> 1 fil ändrad, 7 tillägg(+), 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 = 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
>> *else* arm since there's {} in the *if* arm already, according to
>> Documentation/CodingStyle.
>>
>>
>>> + dprintk("RPC: %5u invalidating is NULL\n", task->tk_pid);
>>
>>
>> That's not a proper English, I'm afraid.
>>
>>> }
>>
>>
>> WBR, Sergei
>>
>>
--
Trond Myklebust
Linux NFS client maintainer, PrimaryData
trond.myklebust@xxxxxxxxxxxxxxx
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