linux-kernel - Re: security/integrity/ima/ima_kexec.c:81:6: warning: no previous prototype for function 'ima_add_kexec

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Date:   Wed, 09 Jun 2021 07:26:43 -0700
From:   nramas <nramas@...ux.microsoft.com>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>,
        Prakhar Srivastava <prsriva@...ux.microsoft.com>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>
Subject: Re: security/integrity/ima/ima_kexec.c:81:6: warning: no previous
 prototype for function 'ima_add_kexec_buffer'

On Wed, 2021-06-09 at 12:10 +0800, kernel test robot wrote:

Hi,

>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross
> ARCH=arm64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
> > > security/integrity/ima/ima_kexec.c:81:6: warning: no previous
> > > prototype for function 'ima_add_kexec_buffer' [-Wmissing-
> > > prototypes]
>    void ima_add_kexec_buffer(struct kimage *image)
>         ^

"linux/ima.h" needs to be included in
"security/integrity/ima/ima_kexec.c" to fix the above warning.

Thanks for reporting. I will post a patch shortly.

 -lakshmi

>    security/integrity/ima/ima_kexec.c:81:1: note: declare 'static' if
> the function is not intended to be used outside of this translation
> unit
>    void ima_add_kexec_buffer(struct kimage *image)
>    ^
>    static 
>    1 warning generated.