[Ocfs2-devel] ocfs2/cluster: Clean up messages in o2net

[Dan Carpenter <dan.carpenter@oracle.com>]

This is still here.  I'm not sure why this error message just showed
up in linux-next again.  Odd.

regards,
dan carpenter

On Tue, Aug 30, 2011 at 02:14:04PM -0700, Sunil Mushran wrote:
> Thanks. I'll fix the two.
> 
> On 08/25/2011 06:01 PM, Dan Carpenter wrote:
> >Hello Sunil Mushran,
> >
> >1dfecf810e0e: "ocfs2/cluster: Clean up messages in o2net"
> >Leads to the following Smatch complaint:
> >fs/ocfs2/cluster/tcp.c +1704 o2net_start_connect(101)
> >	 error: we previously assumed 'sc' could be null (see line 1650)
> >
> >fs/ocfs2/cluster/tcp.c
> >   1649		sc = sc_alloc(node);
> >   1650		if (sc == NULL) {
> >   1651			mlog(0, "couldn't allocate sc\n");
> >   1652			ret = -ENOMEM;
> >   1653			goto out;
> >   1654		}
> >   1655	
> >
> >--- [snip] ---
> >
> >   1701	out:
> >   1702		if (ret) {
> >   1703			printk(KERN_NOTICE "o2net: Connect attempt to " SC_NODEF_FMT
> >   1704			       " failed with errno %d\n", SC_NODEF_ARGS(sc), ret);
> >                                                                         ^^
> >Null dereference here.
> >
> >   1705			/* 0 err so that another will be queued and attempted
> >   1706			 * from set_nn_state */
> >
> >This email is from my new semi-automatic bug reporting tool script.
> >Btw, Smatch complains about this as well:
> >
> >fs/ocfs2/cluster/tcp.c +549 o2net_set_nn_state(44)
> >	error: we previously assumed 'old_sc' could be null (see line 517)
> >
> >These dereferences were disabled in my old config, but Smatch detects
> >them now that we're using normal printk()
> >
> >regards,
> >dan carpenter