Hello,

It looks like the kfree on line 1573 should be moved down a few lines.

julia

---------- Forwarded message ----------
Date: Sat, 1 Dec 2018 11:11:55 +0800
From: kbuild test robot <l...@intel.com>
To: kbu...@01.org
Cc: Julia Lawall <julia.law...@lip6.fr>
Subject: Re: [PATCH net-next,
    v4 01/12] flow_offload: add flow_rule and flow_match structures and use them

CC: kbuild-...@01.org
In-Reply-To: <20181129022231.2740-2-pa...@netfilter.org>
References: <20181129022231.2740-2-pa...@netfilter.org>
TO: Pablo Neira Ayuso <pa...@netfilter.org>
CC: netdev@vger.kernel.org

Hi Pablo,

I love your patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on next-20181130]
[cannot apply to v4.20-rc4]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Pablo-Neira-Ayuso/add-flow_rule-infrastructure/20181130-204709
:::::: branch date: 14 hours ago
:::::: commit date: 14 hours ago

>> net/sched/cls_flower.c:1586:7-9: ERROR: reference preceded by free on line 
>> 1573

# 
https://github.com/0day-ci/linux/commit/012ba7afb48db31be34a84d5fe82c4ceb409fd2d
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout 012ba7afb48db31be34a84d5fe82c4ceb409fd2d
vim +1586 net/sched/cls_flower.c

34738452 Jiri Pirko        2018-07-23  1544
b95ec7eb Jiri Pirko        2018-07-23  1545  static void 
*fl_tmplt_create(struct net *net, struct tcf_chain *chain,
b95ec7eb Jiri Pirko        2018-07-23  1546                          struct 
nlattr **tca,
b95ec7eb Jiri Pirko        2018-07-23  1547                          struct 
netlink_ext_ack *extack)
b95ec7eb Jiri Pirko        2018-07-23  1548  {
b95ec7eb Jiri Pirko        2018-07-23  1549     struct fl_flow_tmplt *tmplt;
b95ec7eb Jiri Pirko        2018-07-23  1550     struct nlattr **tb;
b95ec7eb Jiri Pirko        2018-07-23  1551     int err;
b95ec7eb Jiri Pirko        2018-07-23  1552
b95ec7eb Jiri Pirko        2018-07-23  1553     if (!tca[TCA_OPTIONS])
b95ec7eb Jiri Pirko        2018-07-23  1554             return ERR_PTR(-EINVAL);
b95ec7eb Jiri Pirko        2018-07-23  1555
b95ec7eb Jiri Pirko        2018-07-23  1556     tb = kcalloc(TCA_FLOWER_MAX + 
1, sizeof(struct nlattr *), GFP_KERNEL);
b95ec7eb Jiri Pirko        2018-07-23  1557     if (!tb)
b95ec7eb Jiri Pirko        2018-07-23  1558             return 
ERR_PTR(-ENOBUFS);
b95ec7eb Jiri Pirko        2018-07-23  1559     err = nla_parse_nested(tb, 
TCA_FLOWER_MAX, tca[TCA_OPTIONS],
b95ec7eb Jiri Pirko        2018-07-23  1560                            
fl_policy, NULL);
b95ec7eb Jiri Pirko        2018-07-23  1561     if (err)
b95ec7eb Jiri Pirko        2018-07-23  1562             goto errout_tb;
b95ec7eb Jiri Pirko        2018-07-23  1563
b95ec7eb Jiri Pirko        2018-07-23  1564     tmplt = kzalloc(sizeof(*tmplt), 
GFP_KERNEL);
1cbc36a5 Dan Carpenter     2018-08-03  1565     if (!tmplt) {
1cbc36a5 Dan Carpenter     2018-08-03  1566             err = -ENOMEM;
b95ec7eb Jiri Pirko        2018-07-23  1567             goto errout_tb;
1cbc36a5 Dan Carpenter     2018-08-03  1568     }
b95ec7eb Jiri Pirko        2018-07-23  1569     tmplt->chain = chain;
b95ec7eb Jiri Pirko        2018-07-23  1570     err = fl_set_key(net, tb, 
&tmplt->dummy_key, &tmplt->mask, extack);
b95ec7eb Jiri Pirko        2018-07-23  1571     if (err)
b95ec7eb Jiri Pirko        2018-07-23  1572             goto errout_tmplt;
b95ec7eb Jiri Pirko        2018-07-23 @1573     kfree(tb);
b95ec7eb Jiri Pirko        2018-07-23  1574
b95ec7eb Jiri Pirko        2018-07-23  1575     
fl_init_dissector(&tmplt->dissector, &tmplt->mask);
b95ec7eb Jiri Pirko        2018-07-23  1576
012ba7af Pablo Neira Ayuso 2018-11-29  1577     err = fl_hw_create_tmplt(chain, 
tmplt);
012ba7af Pablo Neira Ayuso 2018-11-29  1578     if (err)
012ba7af Pablo Neira Ayuso 2018-11-29  1579             goto errout_tmplt;
34738452 Jiri Pirko        2018-07-23  1580
b95ec7eb Jiri Pirko        2018-07-23  1581     return tmplt;
b95ec7eb Jiri Pirko        2018-07-23  1582
b95ec7eb Jiri Pirko        2018-07-23  1583  errout_tmplt:
b95ec7eb Jiri Pirko        2018-07-23  1584     kfree(tmplt);
b95ec7eb Jiri Pirko        2018-07-23  1585  errout_tb:
b95ec7eb Jiri Pirko        2018-07-23 @1586     kfree(tb);
b95ec7eb Jiri Pirko        2018-07-23  1587     return ERR_PTR(err);
b95ec7eb Jiri Pirko        2018-07-23  1588  }
b95ec7eb Jiri Pirko        2018-07-23  1589

:::::: The code at line 1586 was first introduced by commit
:::::: b95ec7eb3b4d2f158dd15c912cf670b546f09571 net: sched: cls_flower: 
implement chain templates

:::::: TO: Jiri Pirko <j...@mellanox.com>
:::::: CC: David S. Miller <da...@davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
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