netdev - Re: [PATCH v2 1/2] net: extend drop reasons for multiple subsystems

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Message-ID: <202304141104.ixaAlfxh-lkp@intel.com>
Date:   Fri, 14 Apr 2023 11:21:59 +0800
From:   kernel test robot <lkp@...el.com>
To:     Johannes Berg <johannes@...solutions.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc:     oe-kbuild-all@...ts.linux.dev,
        Johannes Berg <johannes.berg@...el.com>
Subject: Re: [PATCH v2 1/2] net: extend drop reasons for multiple subsystems

Hi Johannes,

kernel test robot noticed the following build warnings:

[auto build test WARNING on wireless-next/main]
[also build test WARNING on wireless/main horms-ipvs/master net/main net-next/main linus/master v6.3-rc6 next-20230413]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Johannes-Berg/mac80211-use-the-new-drop-reasons-infrastructure/20230331-052445
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main
patch link:    https://lore.kernel.org/r/20230330212227.928595-1-johannes%40sipsolutions.net
patch subject: [PATCH v2 1/2] net: extend drop reasons for multiple subsystems
config: m68k-randconfig-s042-20230413 (https://download.01.org/0day-ci/archive/20230414/202304141104.ixaAlfxh-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/64925179be74db98280d706236e37e05bf7b5cca
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Johannes-Berg/mac80211-use-the-new-drop-reasons-infrastructure/20230331-052445
        git checkout 64925179be74db98280d706236e37e05bf7b5cca
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k SHELL=/bin/bash net/core/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304141104.ixaAlfxh-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> net/core/skbuff.c:138:42: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct drop_reason_list const [noderef] __rcu * @@     got struct drop_reason_list const * @@
   net/core/skbuff.c:138:42: sparse:     expected struct drop_reason_list const [noderef] __rcu *
   net/core/skbuff.c:138:42: sparse:     got struct drop_reason_list const *

vim +138 net/core/skbuff.c

   135	
   136	const struct drop_reason_list __rcu *
   137	drop_reasons_by_subsys[SKB_DROP_REASON_SUBSYS_NUM] = {
 > 138		[SKB_DROP_REASON_SUBSYS_CORE] = &drop_reasons_core,
   139	};
   140	EXPORT_SYMBOL(drop_reasons_by_subsys);
   141	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests