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From: kernel test robot <lkp@intel.com>
To: Hangyu Hua <hbh25y@gmail.com>,
	davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
	pabeni@redhat.com, ian.mcdonald@jandi.co.nz
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	dccp@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, Hangyu Hua <hbh25y@gmail.com>
Subject: Re: [PATCH] net: dccp: delete redundant ackvec record in dccp_insert_options()
Date: Wed, 22 Feb 2023 01:20:44 +0800	[thread overview]
Message-ID: <202302220153.QeW2n6o4-lkp@intel.com> (raw)
In-Reply-To: <20230221092206.39741-1-hbh25y@gmail.com>

Hi Hangyu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]
[also build test ERROR on net/master horms-ipvs/master linus/master v6.2 next-20230221]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Hangyu-Hua/net-dccp-delete-redundant-ackvec-record-in-dccp_insert_options/20230221-172448
patch link:    https://lore.kernel.org/r/20230221092206.39741-1-hbh25y%40gmail.com
patch subject: [PATCH] net: dccp: delete redundant ackvec record in dccp_insert_options()
config: s390-randconfig-r011-20230220 (https://download.01.org/0day-ci/archive/20230222/202302220153.QeW2n6o4-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/ea44b55ba82bbe3f35b51212bf839f507a30b70b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Hangyu-Hua/net-dccp-delete-redundant-ackvec-record-in-dccp_insert_options/20230221-172448
        git checkout ea44b55ba82bbe3f35b51212bf839f507a30b70b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash net/dccp/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302220153.QeW2n6o4-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from net/dccp/options.c:10:
   In file included from include/linux/dccp.h:13:
   In file included from include/net/inet_connection_sock.h:21:
   In file included from include/net/inet_sock.h:19:
   In file included from include/linux/netdevice.h:38:
   In file included from include/net/net_namespace.h:43:
   In file included from include/linux/skbuff.h:28:
   In file included from include/linux/dma-mapping.h:10:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
                                                             ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
   #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
                                                        ^
   In file included from net/dccp/options.c:10:
   In file included from include/linux/dccp.h:13:
   In file included from include/net/inet_connection_sock.h:21:
   In file included from include/net/inet_sock.h:19:
   In file included from include/linux/netdevice.h:38:
   In file included from include/net/net_namespace.h:43:
   In file included from include/linux/skbuff.h:28:
   In file included from include/linux/dma-mapping.h:10:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
                                                             ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
   #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
                                                        ^
   In file included from net/dccp/options.c:10:
   In file included from include/linux/dccp.h:13:
   In file included from include/net/inet_connection_sock.h:21:
   In file included from include/net/inet_sock.h:19:
   In file included from include/linux/netdevice.h:38:
   In file included from include/net/net_namespace.h:43:
   In file included from include/linux/skbuff.h:28:
   In file included from include/linux/dma-mapping.h:10:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsb(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsw(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsl(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesb(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesw(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesl(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
>> net/dccp/options.c:594:8: error: call to undeclared function 'dccp_ackvec_lookup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           avr = dccp_ackvec_lookup(&av->av_records, DCCP_SKB_CB(skb)->dccpd_seq);
                 ^
>> net/dccp/options.c:594:6: error: incompatible integer to pointer conversion assigning to 'struct dccp_ackvec_record *' from 'int' [-Wint-conversion]
           avr = dccp_ackvec_lookup(&av->av_records, DCCP_SKB_CB(skb)->dccpd_seq);
               ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> net/dccp/options.c:596:18: error: use of undeclared identifier 'dccp_ackvec_record_slab'; did you mean 'dccp_ackvec_clear_state'?
           kmem_cache_free(dccp_ackvec_record_slab, avr);
                           ^~~~~~~~~~~~~~~~~~~~~~~
                           dccp_ackvec_clear_state
   net/dccp/ackvec.h:110:6: note: 'dccp_ackvec_clear_state' declared here
   void dccp_ackvec_clear_state(struct dccp_ackvec *av, const u64 ackno);
        ^
   12 warnings and 3 errors generated.


vim +/dccp_ackvec_lookup +594 net/dccp/options.c

   548	
   549	int dccp_insert_options(struct sock *sk, struct sk_buff *skb)
   550	{
   551		struct dccp_sock *dp = dccp_sk(sk);
   552		struct dccp_ackvec *av = dp->dccps_hc_rx_ackvec;
   553		struct dccp_ackvec_record *avr;
   554	
   555		DCCP_SKB_CB(skb)->dccpd_opt_len = 0;
   556	
   557		if (dp->dccps_send_ndp_count && dccp_insert_option_ndp(sk, skb))
   558			return -1;
   559	
   560		if (DCCP_SKB_CB(skb)->dccpd_type != DCCP_PKT_DATA) {
   561	
   562			/* Feature Negotiation */
   563			if (dccp_feat_insert_opts(dp, NULL, skb))
   564				return -1;
   565	
   566			if (DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_REQUEST) {
   567				/*
   568				 * Obtain RTT sample from Request/Response exchange.
   569				 * This is currently used for TFRC initialisation.
   570				 */
   571				if (dccp_insert_option_timestamp(skb))
   572					return -1;
   573	
   574			} else if (dccp_ackvec_pending(sk) &&
   575				   dccp_insert_option_ackvec(sk, skb)) {
   576					return -1;
   577			}
   578		}
   579	
   580		if (dp->dccps_hc_rx_insert_options) {
   581			if (ccid_hc_rx_insert_options(dp->dccps_hc_rx_ccid, sk, skb))
   582				goto delete_ackvec;
   583			dp->dccps_hc_rx_insert_options = 0;
   584		}
   585	
   586		if (dp->dccps_timestamp_echo != 0 &&
   587		    dccp_insert_option_timestamp_echo(dp, NULL, skb))
   588			goto delete_ackvec;
   589	
   590		dccp_insert_option_padding(skb);
   591		return 0;
   592	
   593	delete_ackvec:
 > 594		avr = dccp_ackvec_lookup(&av->av_records, DCCP_SKB_CB(skb)->dccpd_seq);
   595		list_del(&avr->avr_node);
 > 596		kmem_cache_free(dccp_ackvec_record_slab, avr);
   597		return -1;
   598	}
   599	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

      parent reply	other threads:[~2023-02-21 17:21 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20230221092206.39741-1-hbh25y@gmail.com>
2023-02-21 14:04 ` [PATCH] net: dccp: delete redundant ackvec record in dccp_insert_options() kernel test robot
2023-02-21 14:35 ` kernel test robot
2023-02-21 17:00 ` kernel test robot
2023-02-21 17:20 ` kernel test robot [this message]

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