linux-kernel - Re: [linux-stable-rc:linux-4.9.y 6083/6211] warning: __mcount_loc already exists: drivers/net/wireless/intel/iwlwifi/mvm/rx.o

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Message-ID: <CAK8P3a3k5pGWuurWVNmPWZ0AXiDjARux8PU0ve3RjWdC4WtKUA@mail.gmail.com>
Date:   Sun, 4 Mar 2018 09:29:17 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     kbuild test robot <fengguang.wu@...el.com>
Cc:     kbuild-all@...org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Olof Johansson <olof@...om.net>,
        "# 3.4.x" <stable@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [linux-stable-rc:linux-4.9.y 6083/6211] warning: __mcount_loc
 already exists: drivers/net/wireless/intel/iwlwifi/mvm/rx.o

On Sun, Mar 4, 2018 at 7:21 AM, kbuild test robot
<fengguang.wu@...el.com> wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y
> head:   85afb4e51ccfdb10f2969b24439ae2887fe0fcff
> commit: c0ecbd663fe6961c6ff181a211f090005858656f [6083/6211] scsi: advansys: fix uninitialized data access
> config: i386-allmodconfig (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
> reproduce:
>         git checkout c0ecbd663fe6961c6ff181a211f090005858656f
>         # save the attached .config to linux build tree
>         make ARCH=i386
>
> All warnings (new ones prefixed by >>):
>
>>> warning: __mcount_loc already exists: drivers/net/wireless/intel/iwlwifi/mvm/rx.o

I'm pretty sure this is unrelated to my patch, but it's a recurring
problem that we should get
to the bottom of. Olof's autobuilder has reported the same thing for
the 3.18-stable tree
but not any others (for every single file in the kernel, not sure if
this warning only
shows up for all of them, or just one module).

         Arnd