From: kernel test robot <lkp@intel.com>
To: Jeff Dike <jdike@akamai.com>, netdev@vger.kernel.org
Cc: kbuild-all@lists.01.org, David Ahern <dsahern@gmail.com>,
Jeff Dike <jdike@akamai.com>
Subject: Re: [PATCH net-next] Exempt multicast addresses from five-second neighbor lifetime
Date: Tue, 3 Nov 2020 06:34:20 +0800 [thread overview]
Message-ID: <202011030632.Z1kVGihJ-lkp@intel.com> (raw)
In-Reply-To: <20201102174756.6933-1-jdike@akamai.com>
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Hi Jeff,
I love your patch! Perhaps something to improve:
[auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Jeff-Dike/Exempt-multicast-addresses-from-five-second-neighbor-lifetime/20201103-015012
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git c43fd36f7fec6c227c5e8a8ddd7d3fe97472182f
config: i386-randconfig-s002-20201102 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-56-gc09e8239-dirty
# https://github.com/0day-ci/linux/commit/e4ca67984d1bb7e5276cf18921c75dcd05ce0275
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Jeff-Dike/Exempt-multicast-addresses-from-five-second-neighbor-lifetime/20201103-015012
git checkout e4ca67984d1bb7e5276cf18921c75dcd05ce0275
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
"sparse warnings: (new ones prefixed by >>)"
net/ipv4/arp.c:933:9: sparse: sparse: preprocessor token IN_MULTICAST redefined
net/ipv4/arp.c: note: in included file (through include/linux/in.h):
>> include/uapi/linux/in.h:273:9: sparse: this was the original definition
>> net/ipv4/arp.c:937:16: sparse: sparse: cast from restricted __be32
vim +937 net/ipv4/arp.c
932
> 933 #define IN_MULTICAST(a) ((((long)(a)) & 0xf0000000) == 0xe0000000)
934
935 static int arp_is_multicast(const void *pkey)
936 {
> 937 return IN_MULTICAST(htonl(*((u32 *)pkey)));
938 }
939
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next prev parent reply other threads:[~2020-11-02 22:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 17:47 [PATCH net-next] Exempt multicast addresses from five-second neighbor lifetime Jeff Dike
2020-11-02 22:34 ` kernel test robot [this message]
2020-11-02 23:23 ` kernel test robot
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