Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on wireless-next/main] [also build test WARNING on wireless/main linus/master v6.3-rc6 next-20230406] [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/sean-wang-mediatek-com/mt76-mt7921-fix-kernel-panic-by-accessing-unallocated-eeprom-data/20230411-043801 base: https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main patch link: https://lore.kernel.org/r/c9e2a44da4daa00166c802a8c10527359358219d.1681158440.git.objelf%40gmail.com patch subject: [PATCH] mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230411/202304110556.xbu5H3ka-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 12.1.0 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 # https://github.com/intel-lab-lkp/linux/commit/9825ad75cf770d2a15f7008eca476121b9b3d794 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review sean-wang-mediatek-com/mt76-mt7921-fix-kernel-panic-by-accessing-unallocated-eeprom-data/20230411-043801 git checkout 9825ad75cf770d2a15f7008eca476121b9b3d794 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/net/wireless/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304110556.xbu5H3ka-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/net/wireless/mediatek/mt76/mt7921/mcu.c: In function 'mt7921_mcu_parse_eeprom': >> drivers/net/wireless/mediatek/mt76/mt7921/mcu.c:22:40: warning: variable 'res' set but not used [-Wunused-but-set-variable] 22 | struct mt7921_mcu_eeprom_info *res; | ^~~ vim +/res +22 drivers/net/wireless/mediatek/mt76/mt7921/mcu.c 23bdc5d8cadfc9 Ming Yen Hsieh 2022-09-07 18 1c099ab44727c8 Sean Wang 2021-01-28 19 static int 1c099ab44727c8 Sean Wang 2021-01-28 20 mt7921_mcu_parse_eeprom(struct mt76_dev *dev, struct sk_buff *skb) 1c099ab44727c8 Sean Wang 2021-01-28 21 { 1c099ab44727c8 Sean Wang 2021-01-28 @22 struct mt7921_mcu_eeprom_info *res; 1c099ab44727c8 Sean Wang 2021-01-28 23 1c099ab44727c8 Sean Wang 2021-01-28 24 if (!skb) 1c099ab44727c8 Sean Wang 2021-01-28 25 return -EINVAL; 1c099ab44727c8 Sean Wang 2021-01-28 26 fc6ee71a2a8f2d Lorenzo Bianconi 2022-06-20 27 skb_pull(skb, sizeof(struct mt76_connac2_mcu_rxd)); 1c099ab44727c8 Sean Wang 2021-01-28 28 1c099ab44727c8 Sean Wang 2021-01-28 29 res = (struct mt7921_mcu_eeprom_info *)skb->data; 1c099ab44727c8 Sean Wang 2021-01-28 30 1c099ab44727c8 Sean Wang 2021-01-28 31 return 0; 1c099ab44727c8 Sean Wang 2021-01-28 32 } 1c099ab44727c8 Sean Wang 2021-01-28 33 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests