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From: kbuild test robot <lkp@intel.com>
To: David Howells <dhowells@redhat.com>
Cc: kbuild-all@01.org, linux-api@vger.kernel.org,
	linux-kbuild@vger.kernel.org, netfilter-devel@vger.kernel.org,
	coreteam@netfilter.org, linux-kernel@vger.kernel.org,
	dhowells@redhat.com
Subject: Re: [PATCH 07/11] UAPI: netfilter: Fix symbol collision issues [ver #2]
Date: Tue, 11 Sep 2018 01:32:57 +0800	[thread overview]
Message-ID: <201809110149.g0a6tmOi%fengguang.wu@intel.com> (raw)
In-Reply-To: <153622555128.14298.11612304975343930534.stgit@warthog.procyon.org.uk>

[-- Attachment #1: Type: text/plain, Size: 8915 bytes --]

Hi David,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc3 next-20180910]
[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/David-Howells/UAPI-drm-Fix-use-of-C-keywords-as-structural-members-ver-2/20180907-092121
config: x86_64-rhel (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/ipv4/netfilter/ipt_ECN.c: In function 'set_ect_tcp':
>> net/ipv4/netfilter/ipt_ECN.c:58:28: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_ECE'?
     if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
                               ^~~~~~~~~~~~~~~~~~
                               IPT_ECN_OP_MATCH_ECE
   net/ipv4/netfilter/ipt_ECN.c:58:28: note: each undeclared identifier is reported only once for each function it appears in
>> net/ipv4/netfilter/ipt_ECN.c:60:28: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
         (!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
                               ^~~~~~~~~~~~~~~~~~
                               IPT_ECN_OP_SET_ECE
   net/ipv4/netfilter/ipt_ECN.c: In function 'ecn_tg':
>> net/ipv4/netfilter/ipt_ECN.c:84:25: error: 'IPT_ECN_OP_SET_IP' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_IP'?
     if (einfo->operation & IPT_ECN_OP_SET_IP)
                            ^~~~~~~~~~~~~~~~~
                            IPT_ECN_OP_MATCH_IP
>> net/ipv4/netfilter/ipt_ECN.c:88:26: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_IP'?
     if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
                             ^~~~~~~~~~~~~~~~~~
                             IPT_ECN_OP_SET_IP
   net/ipv4/netfilter/ipt_ECN.c:88:47: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
     if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
                                                  ^~~~~~~~~~~~~~~~~~
                                                  IPT_ECN_OP_SET_ECE
   net/ipv4/netfilter/ipt_ECN.c: In function 'ecn_tg_check':
>> net/ipv4/netfilter/ipt_ECN.c:101:25: error: 'IPT_ECN_OP_MASK' undeclared (first use in this function); did you mean 'IPT_ECN_IP_MASK'?
     if (einfo->operation & IPT_ECN_OP_MASK)
                            ^~~~~~~~~~~~~~~
                            IPT_ECN_IP_MASK
   net/ipv4/netfilter/ipt_ECN.c:107:27: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_ECE'?
     if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
                              ^~~~~~~~~~~~~~~~~~
                              IPT_ECN_OP_MATCH_ECE
   net/ipv4/netfilter/ipt_ECN.c:107:46: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
     if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
                                                 ^~~~~~~~~~~~~~~~~~
                                                 IPT_ECN_OP_SET_ECE

vim +58 net/ipv4/netfilter/ipt_ECN.c

^1da177e4 Linus Torvalds     2005-04-16   45  
e1931b784 Jan Engelhardt     2007-07-07   46  /* Return false if there was an error. */
e1931b784 Jan Engelhardt     2007-07-07   47  static inline bool
3db05fea5 Herbert Xu         2007-10-15   48  set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
^1da177e4 Linus Torvalds     2005-04-16   49  {
^1da177e4 Linus Torvalds     2005-04-16   50  	struct tcphdr _tcph, *tcph;
6a19d6147 Al Viro            2006-09-28   51  	__be16 oldval;
^1da177e4 Linus Torvalds     2005-04-16   52  
af901ca18 André Goddard Rosa 2009-11-14   53  	/* Not enough header? */
3db05fea5 Herbert Xu         2007-10-15   54  	tcph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
^1da177e4 Linus Torvalds     2005-04-16   55  	if (!tcph)
e1931b784 Jan Engelhardt     2007-07-07   56  		return false;
^1da177e4 Linus Torvalds     2005-04-16   57  
fd841326d Patrick McHardy    2005-08-20  @58  	if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
fd841326d Patrick McHardy    2005-08-20   59  	     tcph->ece == einfo->proto.tcp.ece) &&
7c4e36bc1 Jan Engelhardt     2007-07-07  @60  	    (!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
7c4e36bc1 Jan Engelhardt     2007-07-07   61  	     tcph->cwr == einfo->proto.tcp.cwr))
e1931b784 Jan Engelhardt     2007-07-07   62  		return true;
^1da177e4 Linus Torvalds     2005-04-16   63  
3db05fea5 Herbert Xu         2007-10-15   64  	if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
e1931b784 Jan Engelhardt     2007-07-07   65  		return false;
3db05fea5 Herbert Xu         2007-10-15   66  	tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);
^1da177e4 Linus Torvalds     2005-04-16   67  
6a19d6147 Al Viro            2006-09-28   68  	oldval = ((__be16 *)tcph)[6];
^1da177e4 Linus Torvalds     2005-04-16   69  	if (einfo->operation & IPT_ECN_OP_SET_ECE)
^1da177e4 Linus Torvalds     2005-04-16   70  		tcph->ece = einfo->proto.tcp.ece;
^1da177e4 Linus Torvalds     2005-04-16   71  	if (einfo->operation & IPT_ECN_OP_SET_CWR)
^1da177e4 Linus Torvalds     2005-04-16   72  		tcph->cwr = einfo->proto.tcp.cwr;
^1da177e4 Linus Torvalds     2005-04-16   73  
be0ea7d5d Patrick McHardy    2007-11-30   74  	inet_proto_csum_replace2(&tcph->check, skb,
4b048d6d9 Tom Herbert        2015-08-17   75  				 oldval, ((__be16 *)tcph)[6], false);
e1931b784 Jan Engelhardt     2007-07-07   76  	return true;
^1da177e4 Linus Torvalds     2005-04-16   77  }
^1da177e4 Linus Torvalds     2005-04-16   78  
^1da177e4 Linus Torvalds     2005-04-16   79  static unsigned int
4b560b447 Jan Engelhardt     2009-07-05   80  ecn_tg(struct sk_buff *skb, const struct xt_action_param *par)
^1da177e4 Linus Torvalds     2005-04-16   81  {
7eb355865 Jan Engelhardt     2008-10-08   82  	const struct ipt_ECN_info *einfo = par->targinfo;
^1da177e4 Linus Torvalds     2005-04-16   83  
^1da177e4 Linus Torvalds     2005-04-16  @84  	if (einfo->operation & IPT_ECN_OP_SET_IP)
3db05fea5 Herbert Xu         2007-10-15   85  		if (!set_ect_ip(skb, einfo))
^1da177e4 Linus Torvalds     2005-04-16   86  			return NF_DROP;
^1da177e4 Linus Torvalds     2005-04-16   87  
3666ed1c4 Joe Perches        2009-11-23  @88  	if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
3666ed1c4 Joe Perches        2009-11-23   89  	    ip_hdr(skb)->protocol == IPPROTO_TCP)
3db05fea5 Herbert Xu         2007-10-15   90  		if (!set_ect_tcp(skb, einfo))
^1da177e4 Linus Torvalds     2005-04-16   91  			return NF_DROP;
^1da177e4 Linus Torvalds     2005-04-16   92  
6709dbbb1 Jan Engelhardt     2007-02-07   93  	return XT_CONTINUE;
^1da177e4 Linus Torvalds     2005-04-16   94  }
^1da177e4 Linus Torvalds     2005-04-16   95  
135367b8f Jan Engelhardt     2010-03-19   96  static int ecn_tg_check(const struct xt_tgchk_param *par)
^1da177e4 Linus Torvalds     2005-04-16   97  {
af5d6dc20 Jan Engelhardt     2008-10-08   98  	const struct ipt_ECN_info *einfo = par->targinfo;
af5d6dc20 Jan Engelhardt     2008-10-08   99  	const struct ipt_entry *e = par->entryinfo;
^1da177e4 Linus Torvalds     2005-04-16  100  
0cc9501f9 Florian Westphal   2018-02-09 @101  	if (einfo->operation & IPT_ECN_OP_MASK)
d6b00a534 Jan Engelhardt     2010-03-25  102  		return -EINVAL;
0cc9501f9 Florian Westphal   2018-02-09  103  
0cc9501f9 Florian Westphal   2018-02-09  104  	if (einfo->ip_ect & ~IPT_ECN_IP_MASK)
d6b00a534 Jan Engelhardt     2010-03-25  105  		return -EINVAL;
0cc9501f9 Florian Westphal   2018-02-09  106  
3666ed1c4 Joe Perches        2009-11-23  107  	if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
3666ed1c4 Joe Perches        2009-11-23  108  	    (e->ip.proto != IPPROTO_TCP || (e->ip.invflags & XT_INV_PROTO))) {
b26066447 Florian Westphal   2018-02-09  109  		pr_info_ratelimited("cannot use operation on non-tcp rule\n");
d6b00a534 Jan Engelhardt     2010-03-25  110  		return -EINVAL;
^1da177e4 Linus Torvalds     2005-04-16  111  	}
d6b00a534 Jan Engelhardt     2010-03-25  112  	return 0;
^1da177e4 Linus Torvalds     2005-04-16  113  }
^1da177e4 Linus Torvalds     2005-04-16  114  

:::::: The code at line 58 was first introduced by commit
:::::: fd841326d73096ad79be9c3fa348f9ad04541cc2 [NETFILTER]: Fix ECN target TCP marking

:::::: TO: Patrick McHardy <kaber@trash.net>
:::::: CC: David S. Miller <davem@davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 41196 bytes --]

WARNING: multiple messages have this Message-ID
From: kbuild test robot <lkp@intel.com>
To: David Howells <dhowells@redhat.com>
Cc: kbuild-all@01.org, linux-api@vger.kernel.org,
	linux-kbuild@vger.kernel.org, netfilter-devel@vger.kernel.org,
	coreteam@netfilter.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 07/11] UAPI: netfilter: Fix symbol collision issues [ver #2]
Date: Tue, 11 Sep 2018 01:32:57 +0800	[thread overview]
Message-ID: <201809110149.g0a6tmOi%fengguang.wu@intel.com> (raw)
In-Reply-To: <153622555128.14298.11612304975343930534.stgit@warthog.procyon.org.uk>

[-- Attachment #1: Type: text/plain, Size: 8915 bytes --]

Hi David,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc3 next-20180910]
[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/David-Howells/UAPI-drm-Fix-use-of-C-keywords-as-structural-members-ver-2/20180907-092121
config: x86_64-rhel (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/ipv4/netfilter/ipt_ECN.c: In function 'set_ect_tcp':
>> net/ipv4/netfilter/ipt_ECN.c:58:28: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_ECE'?
     if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
                               ^~~~~~~~~~~~~~~~~~
                               IPT_ECN_OP_MATCH_ECE
   net/ipv4/netfilter/ipt_ECN.c:58:28: note: each undeclared identifier is reported only once for each function it appears in
>> net/ipv4/netfilter/ipt_ECN.c:60:28: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
         (!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
                               ^~~~~~~~~~~~~~~~~~
                               IPT_ECN_OP_SET_ECE
   net/ipv4/netfilter/ipt_ECN.c: In function 'ecn_tg':
>> net/ipv4/netfilter/ipt_ECN.c:84:25: error: 'IPT_ECN_OP_SET_IP' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_IP'?
     if (einfo->operation & IPT_ECN_OP_SET_IP)
                            ^~~~~~~~~~~~~~~~~
                            IPT_ECN_OP_MATCH_IP
>> net/ipv4/netfilter/ipt_ECN.c:88:26: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_IP'?
     if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
                             ^~~~~~~~~~~~~~~~~~
                             IPT_ECN_OP_SET_IP
   net/ipv4/netfilter/ipt_ECN.c:88:47: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
     if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
                                                  ^~~~~~~~~~~~~~~~~~
                                                  IPT_ECN_OP_SET_ECE
   net/ipv4/netfilter/ipt_ECN.c: In function 'ecn_tg_check':
>> net/ipv4/netfilter/ipt_ECN.c:101:25: error: 'IPT_ECN_OP_MASK' undeclared (first use in this function); did you mean 'IPT_ECN_IP_MASK'?
     if (einfo->operation & IPT_ECN_OP_MASK)
                            ^~~~~~~~~~~~~~~
                            IPT_ECN_IP_MASK
   net/ipv4/netfilter/ipt_ECN.c:107:27: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_ECE'?
     if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
                              ^~~~~~~~~~~~~~~~~~
                              IPT_ECN_OP_MATCH_ECE
   net/ipv4/netfilter/ipt_ECN.c:107:46: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
     if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
                                                 ^~~~~~~~~~~~~~~~~~
                                                 IPT_ECN_OP_SET_ECE

vim +58 net/ipv4/netfilter/ipt_ECN.c

^1da177e4 Linus Torvalds     2005-04-16   45  
e1931b784 Jan Engelhardt     2007-07-07   46  /* Return false if there was an error. */
e1931b784 Jan Engelhardt     2007-07-07   47  static inline bool
3db05fea5 Herbert Xu         2007-10-15   48  set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
^1da177e4 Linus Torvalds     2005-04-16   49  {
^1da177e4 Linus Torvalds     2005-04-16   50  	struct tcphdr _tcph, *tcph;
6a19d6147 Al Viro            2006-09-28   51  	__be16 oldval;
^1da177e4 Linus Torvalds     2005-04-16   52  
af901ca18 André Goddard Rosa 2009-11-14   53  	/* Not enough header? */
3db05fea5 Herbert Xu         2007-10-15   54  	tcph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
^1da177e4 Linus Torvalds     2005-04-16   55  	if (!tcph)
e1931b784 Jan Engelhardt     2007-07-07   56  		return false;
^1da177e4 Linus Torvalds     2005-04-16   57  
fd841326d Patrick McHardy    2005-08-20  @58  	if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
fd841326d Patrick McHardy    2005-08-20   59  	     tcph->ece == einfo->proto.tcp.ece) &&
7c4e36bc1 Jan Engelhardt     2007-07-07  @60  	    (!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
7c4e36bc1 Jan Engelhardt     2007-07-07   61  	     tcph->cwr == einfo->proto.tcp.cwr))
e1931b784 Jan Engelhardt     2007-07-07   62  		return true;
^1da177e4 Linus Torvalds     2005-04-16   63  
3db05fea5 Herbert Xu         2007-10-15   64  	if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
e1931b784 Jan Engelhardt     2007-07-07   65  		return false;
3db05fea5 Herbert Xu         2007-10-15   66  	tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);
^1da177e4 Linus Torvalds     2005-04-16   67  
6a19d6147 Al Viro            2006-09-28   68  	oldval = ((__be16 *)tcph)[6];
^1da177e4 Linus Torvalds     2005-04-16   69  	if (einfo->operation & IPT_ECN_OP_SET_ECE)
^1da177e4 Linus Torvalds     2005-04-16   70  		tcph->ece = einfo->proto.tcp.ece;
^1da177e4 Linus Torvalds     2005-04-16   71  	if (einfo->operation & IPT_ECN_OP_SET_CWR)
^1da177e4 Linus Torvalds     2005-04-16   72  		tcph->cwr = einfo->proto.tcp.cwr;
^1da177e4 Linus Torvalds     2005-04-16   73  
be0ea7d5d Patrick McHardy    2007-11-30   74  	inet_proto_csum_replace2(&tcph->check, skb,
4b048d6d9 Tom Herbert        2015-08-17   75  				 oldval, ((__be16 *)tcph)[6], false);
e1931b784 Jan Engelhardt     2007-07-07   76  	return true;
^1da177e4 Linus Torvalds     2005-04-16   77  }
^1da177e4 Linus Torvalds     2005-04-16   78  
^1da177e4 Linus Torvalds     2005-04-16   79  static unsigned int
4b560b447 Jan Engelhardt     2009-07-05   80  ecn_tg(struct sk_buff *skb, const struct xt_action_param *par)
^1da177e4 Linus Torvalds     2005-04-16   81  {
7eb355865 Jan Engelhardt     2008-10-08   82  	const struct ipt_ECN_info *einfo = par->targinfo;
^1da177e4 Linus Torvalds     2005-04-16   83  
^1da177e4 Linus Torvalds     2005-04-16  @84  	if (einfo->operation & IPT_ECN_OP_SET_IP)
3db05fea5 Herbert Xu         2007-10-15   85  		if (!set_ect_ip(skb, einfo))
^1da177e4 Linus Torvalds     2005-04-16   86  			return NF_DROP;
^1da177e4 Linus Torvalds     2005-04-16   87  
3666ed1c4 Joe Perches        2009-11-23  @88  	if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
3666ed1c4 Joe Perches        2009-11-23   89  	    ip_hdr(skb)->protocol == IPPROTO_TCP)
3db05fea5 Herbert Xu         2007-10-15   90  		if (!set_ect_tcp(skb, einfo))
^1da177e4 Linus Torvalds     2005-04-16   91  			return NF_DROP;
^1da177e4 Linus Torvalds     2005-04-16   92  
6709dbbb1 Jan Engelhardt     2007-02-07   93  	return XT_CONTINUE;
^1da177e4 Linus Torvalds     2005-04-16   94  }
^1da177e4 Linus Torvalds     2005-04-16   95  
135367b8f Jan Engelhardt     2010-03-19   96  static int ecn_tg_check(const struct xt_tgchk_param *par)
^1da177e4 Linus Torvalds     2005-04-16   97  {
af5d6dc20 Jan Engelhardt     2008-10-08   98  	const struct ipt_ECN_info *einfo = par->targinfo;
af5d6dc20 Jan Engelhardt     2008-10-08   99  	const struct ipt_entry *e = par->entryinfo;
^1da177e4 Linus Torvalds     2005-04-16  100  
0cc9501f9 Florian Westphal   2018-02-09 @101  	if (einfo->operation & IPT_ECN_OP_MASK)
d6b00a534 Jan Engelhardt     2010-03-25  102  		return -EINVAL;
0cc9501f9 Florian Westphal   2018-02-09  103  
0cc9501f9 Florian Westphal   2018-02-09  104  	if (einfo->ip_ect & ~IPT_ECN_IP_MASK)
d6b00a534 Jan Engelhardt     2010-03-25  105  		return -EINVAL;
0cc9501f9 Florian Westphal   2018-02-09  106  
3666ed1c4 Joe Perches        2009-11-23  107  	if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
3666ed1c4 Joe Perches        2009-11-23  108  	    (e->ip.proto != IPPROTO_TCP || (e->ip.invflags & XT_INV_PROTO))) {
b26066447 Florian Westphal   2018-02-09  109  		pr_info_ratelimited("cannot use operation on non-tcp rule\n");
d6b00a534 Jan Engelhardt     2010-03-25  110  		return -EINVAL;
^1da177e4 Linus Torvalds     2005-04-16  111  	}
d6b00a534 Jan Engelhardt     2010-03-25  112  	return 0;
^1da177e4 Linus Torvalds     2005-04-16  113  }
^1da177e4 Linus Torvalds     2005-04-16  114  

:::::: The code at line 58 was first introduced by commit
:::::: fd841326d73096ad79be9c3fa348f9ad04541cc2 [NETFILTER]: Fix ECN target TCP marking

:::::: TO: Patrick McHardy <kaber@trash.net>
:::::: CC: David S. Miller <davem@davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 41196 bytes --]

WARNING: multiple messages have this Message-ID
From: kbuild test robot <lkp@intel.com>
Cc: kbuild-all@01.org, linux-api@vger.kernel.org,
	linux-kbuild@vger.kernel.org, netfilter-devel@vger.kernel.org,
	coreteam@netfilter.org, linux-kernel@vger.kernel.org,
	dhowells@redhat.com
Subject: Re: [PATCH 07/11] UAPI: netfilter: Fix symbol collision issues [ver #2]
Date: Tue, 11 Sep 2018 01:32:57 +0800	[thread overview]
Message-ID: <201809110149.g0a6tmOi%fengguang.wu@intel.com> (raw)
In-Reply-To: <153622555128.14298.11612304975343930534.stgit@warthog.procyon.org.uk>

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Hi David,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.19-rc3 next-20180910]
[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/David-Howells/UAPI-drm-Fix-use-of-C-keywords-as-structural-members-ver-2/20180907-092121
config: x86_64-rhel (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/ipv4/netfilter/ipt_ECN.c: In function 'set_ect_tcp':
>> net/ipv4/netfilter/ipt_ECN.c:58:28: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_ECE'?
     if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
                               ^~~~~~~~~~~~~~~~~~
                               IPT_ECN_OP_MATCH_ECE
   net/ipv4/netfilter/ipt_ECN.c:58:28: note: each undeclared identifier is reported only once for each function it appears in
>> net/ipv4/netfilter/ipt_ECN.c:60:28: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
         (!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
                               ^~~~~~~~~~~~~~~~~~
                               IPT_ECN_OP_SET_ECE
   net/ipv4/netfilter/ipt_ECN.c: In function 'ecn_tg':
>> net/ipv4/netfilter/ipt_ECN.c:84:25: error: 'IPT_ECN_OP_SET_IP' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_IP'?
     if (einfo->operation & IPT_ECN_OP_SET_IP)
                            ^~~~~~~~~~~~~~~~~
                            IPT_ECN_OP_MATCH_IP
>> net/ipv4/netfilter/ipt_ECN.c:88:26: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_IP'?
     if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
                             ^~~~~~~~~~~~~~~~~~
                             IPT_ECN_OP_SET_IP
   net/ipv4/netfilter/ipt_ECN.c:88:47: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
     if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
                                                  ^~~~~~~~~~~~~~~~~~
                                                  IPT_ECN_OP_SET_ECE
   net/ipv4/netfilter/ipt_ECN.c: In function 'ecn_tg_check':
>> net/ipv4/netfilter/ipt_ECN.c:101:25: error: 'IPT_ECN_OP_MASK' undeclared (first use in this function); did you mean 'IPT_ECN_IP_MASK'?
     if (einfo->operation & IPT_ECN_OP_MASK)
                            ^~~~~~~~~~~~~~~
                            IPT_ECN_IP_MASK
   net/ipv4/netfilter/ipt_ECN.c:107:27: error: 'IPT_ECN_OP_SET_ECE' undeclared (first use in this function); did you mean 'IPT_ECN_OP_MATCH_ECE'?
     if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
                              ^~~~~~~~~~~~~~~~~~
                              IPT_ECN_OP_MATCH_ECE
   net/ipv4/netfilter/ipt_ECN.c:107:46: error: 'IPT_ECN_OP_SET_CWR' undeclared (first use in this function); did you mean 'IPT_ECN_OP_SET_ECE'?
     if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
                                                 ^~~~~~~~~~~~~~~~~~
                                                 IPT_ECN_OP_SET_ECE

vim +58 net/ipv4/netfilter/ipt_ECN.c

^1da177e4 Linus Torvalds     2005-04-16   45  
e1931b784 Jan Engelhardt     2007-07-07   46  /* Return false if there was an error. */
e1931b784 Jan Engelhardt     2007-07-07   47  static inline bool
3db05fea5 Herbert Xu         2007-10-15   48  set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
^1da177e4 Linus Torvalds     2005-04-16   49  {
^1da177e4 Linus Torvalds     2005-04-16   50  	struct tcphdr _tcph, *tcph;
6a19d6147 Al Viro            2006-09-28   51  	__be16 oldval;
^1da177e4 Linus Torvalds     2005-04-16   52  
af901ca18 André Goddard Rosa 2009-11-14   53  	/* Not enough header? */
3db05fea5 Herbert Xu         2007-10-15   54  	tcph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
^1da177e4 Linus Torvalds     2005-04-16   55  	if (!tcph)
e1931b784 Jan Engelhardt     2007-07-07   56  		return false;
^1da177e4 Linus Torvalds     2005-04-16   57  
fd841326d Patrick McHardy    2005-08-20  @58  	if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
fd841326d Patrick McHardy    2005-08-20   59  	     tcph->ece == einfo->proto.tcp.ece) &&
7c4e36bc1 Jan Engelhardt     2007-07-07  @60  	    (!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
7c4e36bc1 Jan Engelhardt     2007-07-07   61  	     tcph->cwr == einfo->proto.tcp.cwr))
e1931b784 Jan Engelhardt     2007-07-07   62  		return true;
^1da177e4 Linus Torvalds     2005-04-16   63  
3db05fea5 Herbert Xu         2007-10-15   64  	if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
e1931b784 Jan Engelhardt     2007-07-07   65  		return false;
3db05fea5 Herbert Xu         2007-10-15   66  	tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);
^1da177e4 Linus Torvalds     2005-04-16   67  
6a19d6147 Al Viro            2006-09-28   68  	oldval = ((__be16 *)tcph)[6];
^1da177e4 Linus Torvalds     2005-04-16   69  	if (einfo->operation & IPT_ECN_OP_SET_ECE)
^1da177e4 Linus Torvalds     2005-04-16   70  		tcph->ece = einfo->proto.tcp.ece;
^1da177e4 Linus Torvalds     2005-04-16   71  	if (einfo->operation & IPT_ECN_OP_SET_CWR)
^1da177e4 Linus Torvalds     2005-04-16   72  		tcph->cwr = einfo->proto.tcp.cwr;
^1da177e4 Linus Torvalds     2005-04-16   73  
be0ea7d5d Patrick McHardy    2007-11-30   74  	inet_proto_csum_replace2(&tcph->check, skb,
4b048d6d9 Tom Herbert        2015-08-17   75  				 oldval, ((__be16 *)tcph)[6], false);
e1931b784 Jan Engelhardt     2007-07-07   76  	return true;
^1da177e4 Linus Torvalds     2005-04-16   77  }
^1da177e4 Linus Torvalds     2005-04-16   78  
^1da177e4 Linus Torvalds     2005-04-16   79  static unsigned int
4b560b447 Jan Engelhardt     2009-07-05   80  ecn_tg(struct sk_buff *skb, const struct xt_action_param *par)
^1da177e4 Linus Torvalds     2005-04-16   81  {
7eb355865 Jan Engelhardt     2008-10-08   82  	const struct ipt_ECN_info *einfo = par->targinfo;
^1da177e4 Linus Torvalds     2005-04-16   83  
^1da177e4 Linus Torvalds     2005-04-16  @84  	if (einfo->operation & IPT_ECN_OP_SET_IP)
3db05fea5 Herbert Xu         2007-10-15   85  		if (!set_ect_ip(skb, einfo))
^1da177e4 Linus Torvalds     2005-04-16   86  			return NF_DROP;
^1da177e4 Linus Torvalds     2005-04-16   87  
3666ed1c4 Joe Perches        2009-11-23  @88  	if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR) &&
3666ed1c4 Joe Perches        2009-11-23   89  	    ip_hdr(skb)->protocol == IPPROTO_TCP)
3db05fea5 Herbert Xu         2007-10-15   90  		if (!set_ect_tcp(skb, einfo))
^1da177e4 Linus Torvalds     2005-04-16   91  			return NF_DROP;
^1da177e4 Linus Torvalds     2005-04-16   92  
6709dbbb1 Jan Engelhardt     2007-02-07   93  	return XT_CONTINUE;
^1da177e4 Linus Torvalds     2005-04-16   94  }
^1da177e4 Linus Torvalds     2005-04-16   95  
135367b8f Jan Engelhardt     2010-03-19   96  static int ecn_tg_check(const struct xt_tgchk_param *par)
^1da177e4 Linus Torvalds     2005-04-16   97  {
af5d6dc20 Jan Engelhardt     2008-10-08   98  	const struct ipt_ECN_info *einfo = par->targinfo;
af5d6dc20 Jan Engelhardt     2008-10-08   99  	const struct ipt_entry *e = par->entryinfo;
^1da177e4 Linus Torvalds     2005-04-16  100  
0cc9501f9 Florian Westphal   2018-02-09 @101  	if (einfo->operation & IPT_ECN_OP_MASK)
d6b00a534 Jan Engelhardt     2010-03-25  102  		return -EINVAL;
0cc9501f9 Florian Westphal   2018-02-09  103  
0cc9501f9 Florian Westphal   2018-02-09  104  	if (einfo->ip_ect & ~IPT_ECN_IP_MASK)
d6b00a534 Jan Engelhardt     2010-03-25  105  		return -EINVAL;
0cc9501f9 Florian Westphal   2018-02-09  106  
3666ed1c4 Joe Perches        2009-11-23  107  	if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR)) &&
3666ed1c4 Joe Perches        2009-11-23  108  	    (e->ip.proto != IPPROTO_TCP || (e->ip.invflags & XT_INV_PROTO))) {
b26066447 Florian Westphal   2018-02-09  109  		pr_info_ratelimited("cannot use operation on non-tcp rule\n");
d6b00a534 Jan Engelhardt     2010-03-25  110  		return -EINVAL;
^1da177e4 Linus Torvalds     2005-04-16  111  	}
d6b00a534 Jan Engelhardt     2010-03-25  112  	return 0;
^1da177e4 Linus Torvalds     2005-04-16  113  }
^1da177e4 Linus Torvalds     2005-04-16  114  

:::::: The code at line 58 was first introduced by commit
:::::: fd841326d73096ad79be9c3fa348f9ad04541cc2 [NETFILTER]: Fix ECN target TCP marking

:::::: TO: Patrick McHardy <kaber@trash.net>
:::::: CC: David S. Miller <davem@davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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  reply	other threads:[~2018-09-10 17:33 UTC|newest]

Thread overview: 124+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-06  9:18 [RFC] UAPI: Check headers by compiling all together as C++ David Howells
2018-09-06  9:18 ` David Howells
2018-09-06  9:18 ` David Howells
2018-09-06  9:18 ` David Howells
2018-09-06  9:18 ` David Howells
     [not found] ` <153622549721.14298.8116794954073122489.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-09-06  9:18   ` [PATCH 01/11] UAPI: drm: Fix use of C++ keywords as structural members [ver #2] David Howells
2018-09-06  9:18     ` David Howells
2018-09-06  9:18 ` [PATCH 02/11] UAPI: keys: " David Howells
2018-09-06  9:18   ` David Howells
2018-09-06  9:18 ` [PATCH 03/11] UAPI: virtio_net: " David Howells
2018-09-06 15:02   ` Michael S. Tsirkin
2018-09-06 15:02   ` Michael S. Tsirkin
2018-09-06  9:18 ` David Howells
2018-09-06  9:18 ` [PATCH 04/11] UAPI: bcache: Fix use of embedded flexible array " David Howells
2018-09-06  9:18 ` [PATCH 05/11] UAPI: coda: Move kernel internals out of public view " David Howells
2018-09-06  9:18   ` David Howells
2018-09-06  9:19 ` [PATCH 06/11] coda: Move internal defs out of include/linux/ " David Howells
2018-09-06  9:19 ` [PATCH 07/11] UAPI: netfilter: Fix symbol collision issues " David Howells
2018-09-10 17:32   ` kbuild test robot [this message]
2018-09-10 17:32     ` kbuild test robot
2018-09-10 17:32     ` kbuild test robot
2018-09-28 13:07   ` [netfilter-core] " Pablo Neira Ayuso
2018-10-09 15:35   ` David Howells
2018-09-06  9:19 ` [PATCH 08/11] UAPI: nilfs2: Fix use of undefined byteswapping functions " David Howells
2018-09-06  9:19 ` [PATCH 09/11] UAPI: ndctl: Fix g++-unsupported initialisation in headers " David Howells
2018-09-06  9:19   ` David Howells
2018-09-06  9:19   ` David Howells
2018-09-25 20:22   ` Dan Williams
2018-09-25 20:22     ` Dan Williams
2018-09-25 20:22     ` Dan Williams
2018-09-06  9:19 ` [PATCH 10/11] UAPI: ndctl: Remove use of PAGE_SIZE " David Howells
2018-09-06  9:19   ` David Howells
2018-09-06  9:19   ` David Howells
2018-09-25 20:17   ` Dan Williams
2018-09-25 20:17     ` Dan Williams
2018-09-25 20:17     ` Dan Williams
2018-10-09 15:36   ` David Howells
2018-10-09 15:36     ` David Howells
2018-09-06  9:19 ` [PATCH 11/11] UAPI: Check headers build for C++ " David Howells
2018-09-10 16:26   ` kbuild test robot
2018-09-10 16:26     ` kbuild test robot
2018-09-10 16:26     ` kbuild test robot
2018-09-10 17:02   ` kbuild test robot
2018-09-10 17:02     ` kbuild test robot
2018-09-10 17:02     ` kbuild test robot
2018-09-14  9:10   ` Arnd Bergmann
  -- strict thread matches above, loose matches on Subject: below --
2018-09-05 15:54 [RFC] UAPI: Check headers by compiling all together as C++ David Howells
2018-09-05 15:54 ` David Howells
2018-09-05 15:54 ` David Howells
2018-09-05 15:54 ` David Howells
2018-09-05 15:54 ` David Howells
2018-09-05 15:54 ` [PATCH 01/11] UAPI: drm: Fix use of C++ keywords as structural members David Howells
2018-09-05 15:54   ` David Howells
2018-09-05 15:54 ` [PATCH 02/11] UAPI: keys: " David Howells
2018-09-05 15:54   ` David Howells
2018-09-05 15:54 ` [PATCH 03/11] UAPI: virtio_net: " David Howells
2018-09-05 16:54   ` Greg KH
2018-09-05 16:54   ` Greg KH
2018-09-05 17:15   ` David Howells
2018-09-05 17:15   ` David Howells
2018-09-05 17:35   ` Michael S. Tsirkin
2018-09-05 17:35   ` Michael S. Tsirkin
2018-09-06  7:09   ` David Howells
2018-09-06  7:09   ` David Howells
2018-09-06 14:36     ` Michael S. Tsirkin
2018-09-06 14:36     ` Michael S. Tsirkin
2018-09-05 15:54 ` David Howells
2018-09-05 15:55 ` [PATCH 04/11] UAPI: bcache: Fix use of embedded flexible array David Howells
2018-10-02 14:52   ` Jan Engelhardt
2018-10-09 15:41   ` David Howells
2018-10-09 16:54     ` Jan Engelhardt
2018-09-05 15:55 ` [PATCH 05/11] UAPI: coda: Don't use internal kernel structs in UAPI David Howells
2018-09-05 16:54   ` Jan Harkes
2018-09-05 17:12   ` Yann Droneaud
2018-09-05 17:28     ` Jan Harkes
2018-09-05 17:28       ` Jan Harkes
2018-09-05 17:24   ` David Howells
2018-09-06  7:13   ` David Howells
2018-09-06 11:52     ` Yann Droneaud
2018-09-06 12:16       ` Jan Harkes
2018-09-06 12:16         ` Jan Harkes
2018-09-06 14:53     ` David Howells
2018-09-05 15:55 ` [PATCH 06/11] UAPI: netfilter: Fix symbol collision issues David Howells
2018-09-05 15:55 ` [PATCH 07/11] UAPI: nilfs2: Fix use of undefined byteswapping functions David Howells
2018-09-05 22:20   ` Al Viro
2018-09-05 15:55 ` [PATCH 08/11] UAPI: sound: Fix use of u32 and co. in UAPI headers David Howells
2018-09-05 15:55   ` David Howells
2018-09-06  5:59   ` Takashi Sakamoto
2018-09-06  5:59     ` Takashi Sakamoto
2018-09-06  8:17   ` David Howells
2018-09-05 15:55 ` [PATCH 09/11] UAPI: ndctl: Fix g++-unsupported initialisation in headers David Howells
2018-09-05 15:55   ` David Howells
2018-09-05 15:55   ` David Howells
2018-09-05 15:55 ` [PATCH 10/11] UAPI: ndctl: Remove use of PAGE_SIZE David Howells
2018-09-05 15:55   ` David Howells
2018-09-05 15:55 ` [PATCH 11/11] UAPI: Check headers build for C++ David Howells
2018-09-05 16:55 ` [RFC] UAPI: Check headers by compiling all together as C++ Greg KH
2018-09-05 16:55 ` Greg KH
2018-09-05 16:55   ` Greg KH
2018-09-05 16:55   ` Greg KH
2018-09-05 16:55   ` Greg KH
2018-09-05 17:33   ` Yann Droneaud
2018-09-05 17:33     ` Yann Droneaud
2018-09-05 17:33     ` Yann Droneaud
2018-09-05 17:33     ` Yann Droneaud
2018-09-05 17:42     ` Michael S. Tsirkin
2018-09-05 17:42     ` Michael S. Tsirkin
2018-09-05 17:42       ` Michael S. Tsirkin
2018-09-05 17:42       ` Michael S. Tsirkin
2018-09-05 17:42       ` Michael S. Tsirkin
2018-09-05 17:42       ` Michael S. Tsirkin
2018-09-05 17:42       ` Michael S. Tsirkin
2018-09-06  7:12     ` Yann Droneaud
2018-09-06  7:12       ` Yann Droneaud
2018-09-06  7:12       ` Yann Droneaud
2018-09-06  7:12       ` Yann Droneaud
2018-09-05 19:22   ` Jan Engelhardt
2018-09-05 19:22   ` Jan Engelhardt
2018-09-05 19:22     ` Jan Engelhardt
2018-09-05 19:22     ` Jan Engelhardt
2018-09-05 19:22     ` Jan Engelhardt
2018-09-05 17:50 ` David Howells
2018-09-05 17:50 ` David Howells
2018-09-05 17:50   ` David Howells

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