From: Dan Carpenter <dan.carpenter@oracle.com>
To: yoshfuji@linux-ipv6.org
Cc: netdev@vger.kernel.org, kbuild@01.org
Subject: re: ipv6: Do not depend on rt->n in rt6_probe().
Date: Mon, 21 Jan 2013 21:28:58 +0300 [thread overview]
Message-ID: <20130121182858.GA8808@elgon.mountain> (raw)
Hello YOSHIFUJI Hideaki / 吉藤英明,
This is a semi-automatic email about new static checker warnings.
The patch 2152caea7196: "ipv6: Do not depend on rt->n in
rt6_probe()." from Jan 17, 2013, leads to the following Smatch
complaint:
net/ipv6/route.c:495 rt6_probe()
error: we previously assumed 'neigh' could be null (see line 490)
net/ipv6/route.c
489
490 if (!neigh ||
^^^^^
New test.
491 time_after(jiffies, neigh->updated + rt->rt6i_idev->cnf.rtr_probe_interval)) {
492 struct in6_addr mcaddr;
493 struct in6_addr *target;
494
495 neigh->updated = jiffies;
^^^^^^^^^^^^^^
Old dereference.
496
497 if (neigh)
^^^^^
Another new test.
regards,
dan carpenter
next reply other threads:[~2013-01-21 18:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 18:28 Dan Carpenter [this message]
2013-01-21 18:41 ` ipv6: Do not depend on rt->n in rt6_probe() YOSHIFUJI Hideaki
2013-01-21 19:28 ` Rate Limitation of Router Reachability Probing for possible dead routers (is Re: ipv6: Do not depend on rt->n in rt6_probe().) YOSHIFUJI Hideaki
2013-01-21 20:44 ` David Miller
2013-01-22 3:47 ` YOSHIFUJI Hideaki
2013-01-22 5:49 ` David Miller
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