From: Steffen Klassert <steffen.klassert@secunet.com>
To: kbuild test robot <lkp@intel.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>, <kbuild-all@01.org>,
<netdev@vger.kernel.org>,
Herbert Xu <herbert@gondor.apana.org.au>
Subject: Re: [ipsec-next:testing 7/8] include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces)
Date: Tue, 8 Oct 2019 07:55:09 +0200 [thread overview]
Message-ID: <20191008055509.GW2879@gauss3.secunet.de> (raw)
In-Reply-To: <201910061039.jnJWPq01%lkp@intel.com>
On Sun, Oct 06, 2019 at 10:46:40AM +0800, kbuild test robot wrote:
> 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@intel.com>
>
>
> >> 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;
Sabrina, can you please fix this and resend the patchset?
Also, icsk_ulp_data has a __rcu annotation, so maybe better
using rcu primitives to access the pointer?
Another thing, where is espintcp_ctx that is assigned to
icsk_ulp_data freed?
next prev parent reply other threads:[~2019-10-08 5:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-06 2:46 [ipsec-next:testing 7/8] include/net/espintcp.h:36:20: sparse: sparse: incorrect type in return expression (different address spaces) kbuild test robot
2019-10-08 5:55 ` Steffen Klassert [this message]
2019-10-08 7:39 ` Sabrina Dubroca
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