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    SubjectRe: [PATCH 24/32] kasan: move kasan_addr_to_slab to common.c
    On Wed, Jun 15, 2022 at 3:28 PM kernel test robot <lkp@intel.com> wrote:
    >
    > Hi,
    >
    > I love your patch! Perhaps something to improve:
    >
    > [auto build test WARNING on akpm-mm/mm-everything]
    > [also build test WARNING on linus/master v5.19-rc2 next-20220615]
    > [cannot apply to vbabka-slab/for-next]
    > [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/andrey-konovalov-linux-dev/kasan-switch-tag-based-modes-to-stack-ring-from-per-object-metadata/20220614-042239
    > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
    > config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20220615/202206152134.sadCRvGk-lkp@intel.com/config)
    > compiler: s390-linux-gcc (GCC) 11.3.0
    > 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/b0b10a57b2d9a5e5ae5d7ca62046b9774df1a88f
    > git remote add linux-review https://github.com/intel-lab-lkp/linux
    > git fetch --no-tags linux-review andrey-konovalov-linux-dev/kasan-switch-tag-based-modes-to-stack-ring-from-per-object-metadata/20220614-042239
    > git checkout b0b10a57b2d9a5e5ae5d7ca62046b9774df1a88f
    > # save the config file
    > mkdir build_dir && cp config build_dir/.config
    > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash mm/kasan/
    >
    > 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 >>):
    >
    > mm/kasan/common.c: In function 'kasan_addr_to_slab':
    > >> mm/kasan/common.c:35:19: warning: ordered comparison of pointer with null pointer [-Wextra]
    > 35 | if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory))
    > | ^~
    > mm/kasan/common.c: In function '____kasan_slab_free':
    > mm/kasan/common.c:202:12: warning: variable 'tag' set but not used [-Wunused-but-set-variable]
    > 202 | u8 tag;
    > | ^~~

    Will fix both in v2. Thanks!

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