linux-kernel - Re: [PATCH v2 3/3] vhost, kcov: collect coverage from vhost

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Message-ID: <201910260419.tLLjWirL%lkp@intel.com>
Date:   Sat, 26 Oct 2019 04:26:54 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     kbuild-all@...ts.01.org, linux-usb@...r.kernel.org,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alan Stern <stern@...land.harvard.edu>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        David Windsor <dwindsor@...il.com>,
        Elena Reshetova <elena.reshetova@...el.com>,
        Anders Roxell <anders.roxell@...aro.org>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: Re: [PATCH v2 3/3] vhost, kcov: collect coverage from vhost_worker

Hi Andrey,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.4-rc4 next-20191025]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Andrey-Konovalov/kcov-collect-coverage-from-usb-and-vhost/20191025-145734
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 39a38bcba4ab6e5285b07675b0e42c96eec35e67
config: s390-allmodconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=s390 

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

All errors (new ones prefixed by >>):

>> ERROR: "kcov_common_handle" [drivers/vhost/vhost.ko] undefined!
   ERROR: "kcov_remote_stop" [drivers/vhost/vhost.ko] undefined!
   ERROR: "kcov_remote_start" [drivers/vhost/vhost.ko] undefined!
   ERROR: "kcov_remote_stop" [drivers/usb/core/usbcore.ko] undefined!
   ERROR: "kcov_remote_start" [drivers/usb/core/usbcore.ko] undefined!

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

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