Messages in this thread | | | Date | Thu, 23 Jun 2022 20:44:31 +0800 | From | kernel test robot <> | Subject | [cxl:preview 41/49] kernel/resource.c:1823:25: warning: variable 'res' is uninitialized when used within its own initialization |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git preview head: b2d4fd5c97b59f622e6c45ac51020cdcd66bb022 commit: 96ec07f789bf8a52f5c00d3310d9b7ec4c701738 [41/49] cxl/region: Allocate host physical address (HPA) capacity to new regions config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220623/202206232003.bjvwazsK-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 46be5faaf03466c3751f8a2882bef5a217e15926) 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://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=96ec07f789bf8a52f5c00d3310d9b7ec4c701738 git remote add cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git git fetch --no-tags cxl preview git checkout 96ec07f789bf8a52f5c00d3310d9b7ec4c701738 # 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=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> kernel/resource.c:1823:25: warning: variable 'res' is uninitialized when used within its own initialization [-Wuninitialized] struct resource *res = res; ~~~ ^~~ 1 warning generated.
vim +/res +1823 kernel/resource.c
6f2443c3ffee66 Dan Williams 2022-05-20 1820 6f2443c3ffee66 Dan Williams 2022-05-20 1821 static void remove_free_mem_region(void *_res) 6f2443c3ffee66 Dan Williams 2022-05-20 1822 { 6f2443c3ffee66 Dan Williams 2022-05-20 @1823 struct resource *res = res; 6f2443c3ffee66 Dan Williams 2022-05-20 1824 6f2443c3ffee66 Dan Williams 2022-05-20 1825 if (res->parent) 6f2443c3ffee66 Dan Williams 2022-05-20 1826 remove_resource(res); 6f2443c3ffee66 Dan Williams 2022-05-20 1827 free_resource(res); 6f2443c3ffee66 Dan Williams 2022-05-20 1828 } 6f2443c3ffee66 Dan Williams 2022-05-20 1829
:::::: The code at line 1823 was first introduced by commit :::::: 6f2443c3ffee6675ef14a4b1256400a9c8a652ca resource: Introduce alloc_free_mem_region()
:::::: TO: Dan Williams <dan.j.williams@intel.com> :::::: CC: Dan Williams <dan.j.williams@intel.com>
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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