netdev - [ipsec-next:testing 7/8] include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces)

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Message-ID: <201910061039.jnJWPq01%lkp@intel.com>
Date:   Sun, 6 Oct 2019 10:46:40 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Sabrina Dubroca <sd@...asysnail.net>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        Steffen Klassert <steffen.klassert@...unet.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [ipsec-next:testing 7/8] include/net/espintcp.h:36:20: sparse:
 sparse: incorrect type in return expression (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next.git testing
head:   5374d99ba41893b4bb1ddbe35a88b1f08e860903
commit: 735de2631f8680ac714df1ecc8e052785e9f9f8e [7/8] xfrm: add espintcp (RFC 8229)
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-rc1-42-g38eda53-dirty
        git checkout 735de2631f8680ac714df1ecc8e052785e9f9f8e
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> net/xfrm/espintcp.c:421:29: sparse: sparse: incorrect type in assignment (different address spaces) @@    expected void [noderef] <asn:4> *icsk_ulp_data @@    got struct evoid [noderef] <asn:4> *icsk_ulp_data @@
>> net/xfrm/espintcp.c:421:29: sparse:    expected void [noderef] <asn:4> *icsk_ulp_data
>> net/xfrm/espintcp.c:421:29: sparse:    got struct espintcp_ctx *[assigned] ctx
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data
>> include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) @@    expected struct espintcp_ctx * @@    got voistruct espintcp_ctx * @@
>> include/net/espintcp.h:36:20: sparse:    expected struct espintcp_ctx *
>> include/net/espintcp.h:36:20: sparse:    got void [noderef] <asn:4> *icsk_ulp_data

vim +36 include/net/espintcp.h

    31	
    32	static inline struct espintcp_ctx *espintcp_getctx(const struct sock *sk)
    33	{
    34		struct inet_connection_sock *icsk = inet_csk(sk);
    35	
  > 36		return icsk->icsk_ulp_data;

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