linux-kernel - Re: [PATCH v2] appletalk: Fix use-after-free in atalk_proc

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Date:   Thu, 28 Feb 2019 21:48:15 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     kbuild test robot <lkp@...el.com>
CC:     <kbuild-all@...org>, <davem@...emloft.net>, <joe@...ches.com>,
        <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH v2] appletalk: Fix use-after-free in atalk_proc_exit



On 2019/2/28 20:38, kbuild test robot wrote:
> Hi YueHaibing,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on net-next/master]
> [also build test WARNING on v5.0-rc8 next-20190228]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Yue-Haibing/appletalk-Fix-use-after-free-in-atalk_proc_exit/20190228-195802
> config: i386-randconfig-x003-201908 (attached as .config)
> compiler: gcc-8 (Debian 8.2.0-20) 8.2.0
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386 
> 
> All warnings (new ones prefixed by >>):
> 
>>> WARNING: net/appletalk/appletalk.o(.init.text+0x104): Section mismatch in reference from the function init_module() to the function .exit.text:atalk_proc_exit()
>    The function __init init_module() references
>    a function __exit atalk_proc_exit().
>    This is often seen when error handling in the init function
>    uses functionality in the exit path.
>    The fix is often to remove the __exit annotation of
>    atalk_proc_exit() so it may be used outside an exit section.

Thanks, will fix it.

> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
>