Re: [PATCHv3 bpf-next 1/2] xdp: add a new helper for dev map multicast support

[kbuild test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
In-Reply-To: <20200523060537.264096-2-liuhangbin@gmail.com>
References: <20200523060537.264096-2-liuhangbin@gmail.com>
TO: Hangbin Liu <liuhangbin@gmail.com>
TO: bpf(a)vger.kernel.org
CC: netdev(a)vger.kernel.org
CC: "Toke Høiland-Jørgensen" <toke@redhat.com>
CC: Jiri Benc <jbenc@redhat.com>
CC: Jesper Dangaard Brouer <brouer@redhat.com>
CC: Eelco Chaudron <echaudro@redhat.com>
CC: ast(a)kernel.org
CC: Daniel Borkmann <daniel@iogearbox.net>
CC: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
CC: Hangbin Liu <liuhangbin@gmail.com>

Hi Hangbin,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on bpf-next/master]
[also build test WARNING on net-next/master next-20200522]
[cannot apply to bpf/master net/master linus/master v5.7-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Hangbin-Liu/xdp-add-dev-map-multicast-support/20200523-141019
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
config: s390-randconfig-s002-20200524 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-240-gf0fe1cd9-dirty
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=s390 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

   net/core/filter.c:400:33: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:403:33: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:406:33: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:409:33: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:412:33: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:486:27: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:489:27: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:492:27: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:1380:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@    expected struct sock_filter const *filter @@    got struct sock_struct sock_filter const *filter @@
   net/core/filter.c:1380:39: sparse:    expected struct sock_filter const *filter
   net/core/filter.c:1380:39: sparse:    got struct sock_filter [noderef] <asn:1> *filter
   net/core/filter.c:1458:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@    expected struct sock_filter const *filter @@    got struct sock_struct sock_filter const *filter @@
   net/core/filter.c:1458:39: sparse:    expected struct sock_filter const *filter
   net/core/filter.c:1458:39: sparse:    got struct sock_filter [noderef] <asn:1> *filter
   net/core/filter.c:7011:27: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:7014:27: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:7017:27: sparse: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:215:32: sparse: sparse: cast to restricted __be16
   net/core/filter.c:242:32: sparse: sparse: cast to restricted __be32
   net/core/filter.c:1880:43: sparse: sparse: incorrect type in argument 2 (different base types) @@    expected restricted __wsum [usertype] diff @@    got urestricted __wsum [usertype] diff @@
   net/core/filter.c:1880:43: sparse:    expected restricted __wsum [usertype] diff
   net/core/filter.c:1880:43: sparse:    got unsigned long long [usertype] to
   net/core/filter.c:1883:36: sparse: sparse: incorrect type in argument 2 (different base types) @@    expected restricted __be16 [usertype] old @@    got urestricted __be16 [usertype] old @@
   net/core/filter.c:1883:36: sparse:    expected restricted __be16 [usertype] old
   net/core/filter.c:1883:36: sparse:    got unsigned long long [usertype] from
   net/core/filter.c:1883:42: sparse: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be16 [usertype] new @@    got urestricted __be16 [usertype] new @@
   net/core/filter.c:1883:42: sparse:    expected restricted __be16 [usertype] new
   net/core/filter.c:1883:42: sparse:    got unsigned long long [usertype] to
   net/core/filter.c:1886:36: sparse: sparse: incorrect type in argument 2 (different base types) @@    expected restricted __be32 [usertype] from @@    got urestricted __be32 [usertype] from @@
   net/core/filter.c:1886:36: sparse:    expected restricted __be32 [usertype] from
   net/core/filter.c:1886:36: sparse:    got unsigned long long [usertype] from
   net/core/filter.c:1886:42: sparse: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be32 [usertype] to @@    got urestricted __be32 [usertype] to @@
   net/core/filter.c:1886:42: sparse:    expected restricted __be32 [usertype] to
   net/core/filter.c:1886:42: sparse:    got unsigned long long [usertype] to
   net/core/filter.c:1931:59: sparse: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __wsum [usertype] diff @@    got urestricted __wsum [usertype] diff @@
   net/core/filter.c:1931:59: sparse:    expected restricted __wsum [usertype] diff
   net/core/filter.c:1931:59: sparse:    got unsigned long long [usertype] to
   net/core/filter.c:1934:52: sparse: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be16 [usertype] from @@    got urestricted __be16 [usertype] from @@
   net/core/filter.c:1934:52: sparse:    expected restricted __be16 [usertype] from
   net/core/filter.c:1934:52: sparse:    got unsigned long long [usertype] from
   net/core/filter.c:1934:58: sparse: sparse: incorrect type in argument 4 (different base types) @@    expected restricted __be16 [usertype] to @@    got urestricted __be16 [usertype] to @@
   net/core/filter.c:1934:58: sparse:    expected restricted __be16 [usertype] to
   net/core/filter.c:1934:58: sparse:    got unsigned long long [usertype] to
   net/core/filter.c:1937:52: sparse: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be32 [usertype] from @@    got urestricted __be32 [usertype] from @@
   net/core/filter.c:1937:52: sparse:    expected restricted __be32 [usertype] from
   net/core/filter.c:1937:52: sparse:    got unsigned long long [usertype] from
   net/core/filter.c:1937:58: sparse: sparse: incorrect type in argument 4 (different base types) @@    expected restricted __be32 [usertype] to @@    got urestricted __be32 [usertype] to @@
   net/core/filter.c:1937:58: sparse:    expected restricted __be32 [usertype] to
   net/core/filter.c:1937:58: sparse:    got unsigned long long [usertype] to
   net/core/filter.c:1983:28: sparse: sparse: incorrect type in return expression (different base types) @@    expected unsigned long long @@    got nsigned long long @@
   net/core/filter.c:1983:28: sparse:    expected unsigned long long
   net/core/filter.c:1983:28: sparse:    got restricted __wsum
   net/core/filter.c:2005:35: sparse: sparse: incorrect type in return expression (different base types) @@    expected unsigned long long @@    got restricted unsigned long long @@
   net/core/filter.c:2005:35: sparse:    expected unsigned long long
   net/core/filter.c:2005:35: sparse:    got restricted __wsum [usertype] csum
   net/core/filter.c:4720:17: sparse: sparse: incorrect type in assignment (different base types) @@    expected unsigned int [usertype] spi @@    got restricted unsigned int [usertype] spi @@
   net/core/filter.c:4720:17: sparse:    expected unsigned int [usertype] spi
   net/core/filter.c:4720:17: sparse:    got restricted __be32 const [usertype] spi
   net/core/filter.c:4728:33: sparse: sparse: incorrect type in assignment (different base types) @@    expected unsigned int [usertype] remote_ipv4 @@    got restricted unsigned int [usertype] remote_ipv4 @@
   net/core/filter.c:4728:33: sparse:    expected unsigned int [usertype] remote_ipv4
   net/core/filter.c:4728:33: sparse:    got restricted __be32 const [usertype] a4
   net/core/filter.c:3534:25: sparse: sparse: non size-preserving integer to pointer cast
   net/core/filter.c:3786:10: sparse: sparse: Initializer entry defined twice
>> net/core/filter.c:3787:10: sparse:   also defined here
   net/core/filter.c:4062:21: sparse: sparse: non size-preserving integer to pointer cast

# https://github.com/0day-ci/linux/commit/b5e5f70cd41c3958d6bf936874f6774a0e965bf0
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout b5e5f70cd41c3958d6bf936874f6774a0e965bf0
vim +3787 net/core/filter.c

b5e5f70cd41c39 Hangbin Liu 2020-05-23  3781  
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3782  static const struct bpf_func_proto bpf_xdp_redirect_map_multi_proto = {
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3783  	.func           = bpf_xdp_redirect_map_multi,
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3784  	.gpl_only       = false,
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3785  	.ret_type       = RET_INTEGER,
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3786  	.arg1_type      = ARG_CONST_MAP_PTR,
b5e5f70cd41c39 Hangbin Liu 2020-05-23 @3787  	.arg1_type      = ARG_CONST_MAP_PTR,
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3788  	.arg3_type      = ARG_ANYTHING,
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3789  };
b5e5f70cd41c39 Hangbin Liu 2020-05-23  3790  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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