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Date:   Sat, 14 May 2022 12:20:19 +0800
From:   kernel test robot <lkp@intel.com>
To:     Vincent Mailhol <mailhol.vincent@wanadoo.fr>,
        Marc Kleine-Budde <mkl@pengutronix.de>
Cc:     llvm@lists.linux.dev, kbuild-all@lists.01.org,
        linux-can@vger.kernel.org, linux-kernel@vger.kernel.org,
        Max Staudt <max@enpas.org>,
        Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Subject: Re: [PATCH v2 1/2] can: skb:: move can_dropped_invalid_skb and
 can_skb_headroom_valid to skb.c
Message-ID: <202205141221.H0aZXRak-lkp@intel.com>
References: <20220513153606.302464-2-mailhol.vincent@wanadoo.fr>
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In-Reply-To: <20220513153606.302464-2-mailhol.vincent@wanadoo.fr>
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Hi Vincent,

I love your patch! Yet something to improve:

[auto build test ERROR on mkl-can-next/testing]
[also build test ERROR on v5.18-rc6 next-20220513]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Vincent-Mailhol/can-skb-move-can_dropped_invalid_skb-and-can_skb_headroom_valid-to-skb-c/20220514-003707
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git testing
config: arm-randconfig-r021-20220512 (https://download.01.org/0day-ci/archive/20220514/202205141221.H0aZXRak-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 38189438b69ca27b4c6ce707c52dbd217583d046)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/8f56e6b1b9945ea47c9f410d1254451df9d6fe22
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Vincent-Mailhol/can-skb-move-can_dropped_invalid_skb-and-can_skb_headroom_valid-to-skb-c/20220514-003707
        git checkout 8f56e6b1b9945ea47c9f410d1254451df9d6fe22
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   ld.lld: warning: lld uses blx instruction, no object with architecture supporting feature detected
   ld.lld: warning: lld uses blx instruction, no object with architecture supporting feature detected
>> ld.lld: error: undefined symbol: can_dropped_invalid_skb
   >>> referenced by vxcan.c:45 (drivers/net/can/vxcan.c:45)
   >>>               net/can/vxcan.o:(vxcan_xmit) in archive drivers/built-in.a

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp