netdev - Re: [PATCH net-next v2 2/5] bpf: Add IPv6 Segment Routing helpers

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Date:   Thu, 26 Apr 2018 21:45:25 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Mathieu Xhonneux <m.xhonneux@...il.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org, dlebrun@...gle.com,
        alexei.starovoitov@...il.com
Subject: Re: [PATCH net-next v2 2/5] bpf: Add IPv6 Segment Routing helpers

Hi Mathieu,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Mathieu-Xhonneux/ipv6-sr-introduce-seg6local-End-BPF-action/20180426-082209
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   net/core/filter.c:110:48: sparse: expression using sizeof(void)
   net/core/filter.c:110:48: sparse: expression using sizeof(void)
   net/core/filter.c:323:33: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:326:33: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:329:33: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:332:33: sparse: subtraction of functions? Share your drugs
   net/core/filter.c:335:33: sparse: subtraction of functions? Share your drugs
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   net/core/filter.c:1189:39: sparse: incorrect type in argument 1 (different address spaces) @@    expected struct sock_filter const *filter @@    got struct sockstruct sock_filter const *filter @@
   net/core/filter.c:1189:39:    expected struct sock_filter const *filter
   net/core/filter.c:1189:39:    got struct sock_filter [noderef] <asn:1>*filter
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   net/core/filter.c:1291:39: sparse: incorrect type in argument 1 (different address spaces) @@    expected struct sock_filter const *filter @@    got struct sockstruct sock_filter const *filter @@
   net/core/filter.c:1291:39:    expected struct sock_filter const *filter
   net/core/filter.c:1291:39:    got struct sock_filter [noderef] <asn:1>*filter
   include/linux/filter.h:612:16: sparse: expression using sizeof(void)
   net/core/filter.c:1552:43: sparse: incorrect type in argument 2 (different base types) @@    expected restricted __wsum [usertype] diff @@    got unsigned lonrestricted __wsum [usertype] diff @@
   net/core/filter.c:1552:43:    expected restricted __wsum [usertype] diff
   net/core/filter.c:1552:43:    got unsigned long long [unsigned] [usertype] to
   net/core/filter.c:1555:36: sparse: incorrect type in argument 2 (different base types) @@    expected restricted __be16 [usertype] old @@    got unsigned lonrestricted __be16 [usertype] old @@
   net/core/filter.c:1555:36:    expected restricted __be16 [usertype] old
   net/core/filter.c:1555:36:    got unsigned long long [unsigned] [usertype] from
   net/core/filter.c:1555:42: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be16 [usertype] new @@    got unsigned lonrestricted __be16 [usertype] new @@
   net/core/filter.c:1555:42:    expected restricted __be16 [usertype] new
   net/core/filter.c:1555:42:    got unsigned long long [unsigned] [usertype] to
   net/core/filter.c:1558:36: sparse: incorrect type in argument 2 (different base types) @@    expected restricted __be32 [usertype] from @@    got unsigned lonrestricted __be32 [usertype] from @@
   net/core/filter.c:1558:36:    expected restricted __be32 [usertype] from
   net/core/filter.c:1558:36:    got unsigned long long [unsigned] [usertype] from
   net/core/filter.c:1558:42: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be32 [usertype] to @@    got unsigned lonrestricted __be32 [usertype] to @@
   net/core/filter.c:1558:42:    expected restricted __be32 [usertype] to
   net/core/filter.c:1558:42:    got unsigned long long [unsigned] [usertype] to
   net/core/filter.c:1603:59: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __wsum [usertype] diff @@    got unsigned lonrestricted __wsum [usertype] diff @@
   net/core/filter.c:1603:59:    expected restricted __wsum [usertype] diff
   net/core/filter.c:1603:59:    got unsigned long long [unsigned] [usertype] to
   net/core/filter.c:1606:52: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be16 [usertype] from @@    got unsigned lonrestricted __be16 [usertype] from @@
   net/core/filter.c:1606:52:    expected restricted __be16 [usertype] from
   net/core/filter.c:1606:52:    got unsigned long long [unsigned] [usertype] from
   net/core/filter.c:1606:58: sparse: incorrect type in argument 4 (different base types) @@    expected restricted __be16 [usertype] to @@    got unsigned lonrestricted __be16 [usertype] to @@
   net/core/filter.c:1606:58:    expected restricted __be16 [usertype] to
   net/core/filter.c:1606:58:    got unsigned long long [unsigned] [usertype] to
   net/core/filter.c:1609:52: sparse: incorrect type in argument 3 (different base types) @@    expected restricted __be32 [usertype] from @@    got unsigned lonrestricted __be32 [usertype] from @@
   net/core/filter.c:1609:52:    expected restricted __be32 [usertype] from
   net/core/filter.c:1609:52:    got unsigned long long [unsigned] [usertype] from
   net/core/filter.c:1609:58: sparse: incorrect type in argument 4 (different base types) @@    expected restricted __be32 [usertype] to @@    got unsigned lonrestricted __be32 [usertype] to @@
   net/core/filter.c:1609:58:    expected restricted __be32 [usertype] to
   net/core/filter.c:1609:58:    got unsigned long long [unsigned] [usertype] to
   net/core/filter.c:1655:28: sparse: incorrect type in return expression (different base types) @@    expected unsigned long long @@    got nsigned long long @@
   net/core/filter.c:1655:28:    expected unsigned long long
   net/core/filter.c:1655:28:    got restricted __wsum
   net/core/filter.c:1677:35: sparse: incorrect type in return expression (different base types) @@    expected unsigned long long @@    got restricted unsigned long long @@
   net/core/filter.c:1677:35:    expected unsigned long long
   net/core/filter.c:1677:35:    got restricted __wsum [usertype] csum
   net/core/filter.c:3462:41: sparse: expression using sizeof(void)
   net/core/filter.c:3466:41: sparse: expression using sizeof(void)
   net/core/filter.c:3470:46: sparse: expression using sizeof(void)
   net/core/filter.c:3470:46: sparse: expression using sizeof(void)
   net/core/filter.c:3538:47: sparse: expression using sizeof(void)
>> net/core/filter.c:3728:5: sparse: symbol 'bpf_push_seg6_encap' was not declared. Should it be static?

Please review and possibly fold the followup patch.

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