On (23/01/12 05:13), kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable > head: 8a0b7a30e285f66c8369f9f77c5784d8240ba1b3 > commit: eab24cc5a373f23bbf7e998c1b3db8bdbb8759d0 [262/266] zsmalloc: make zspage chain size configurable > config: parisc64-allyesconfig > compiler: hppa64-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://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=eab24cc5a373f23bbf7e998c1b3db8bdbb8759d0 > git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git > git fetch --no-tags akpm-mm mm-unstable > git checkout eab24cc5a373f23bbf7e998c1b3db8bdbb8759d0 > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc64 olddefconfig > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc64 SHELL=/bin/bash > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All error/warnings (new ones prefixed by >>): > > In file included from include/vdso/const.h:5, > from include/linux/const.h:4, > from include/linux/list.h:9, > from include/linux/module.h:12, > from mm/zsmalloc.c:40: > >> mm/zsmalloc.c:122:59: warning: right shift count >= width of type [-Wshift-count-overflow] > 122 | MAX(32, (CONFIG_ZSMALLOC_CHAIN_SIZE << PAGE_SHIFT >> OBJ_INDEX_BITS)) > | ^~ > include/uapi/linux/const.h:34:40: note: in definition of macro '__KERNEL_DIV_ROUND_UP' > 34 | #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) > | ^ > mm/zsmalloc.c:122:9: note: in expansion of macro 'MAX' > 122 | MAX(32, (CONFIG_ZSMALLOC_CHAIN_SIZE << PAGE_SHIFT >> OBJ_INDEX_BITS)) > | ^~~ > mm/zsmalloc.c:140:59: note: in expansion of macro 'ZS_MIN_ALLOC_SIZE' > 140 | #define ZS_SIZE_CLASSES (DIV_ROUND_UP(ZS_MAX_ALLOC_SIZE - ZS_MIN_ALLOC_SIZE, \ > | ^~~~~~~~~~~~~~~~~ > mm/zsmalloc.c:224:39: note: in expansion of macro 'ZS_SIZE_CLASSES' > 224 | struct size_class *size_class[ZS_SIZE_CLASSES]; > | ^~~~~~~~~~~~~~~ > >> mm/zsmalloc.c:122:59: warning: right shift count >= width of type [-Wshift-count-overflow] > 122 | MAX(32, (CONFIG_ZSMALLOC_CHAIN_SIZE << PAGE_SHIFT >> OBJ_INDEX_BITS)) > | ^~ > include/uapi/linux/const.h:34:40: note: in definition of macro '__KERNEL_DIV_ROUND_UP' > 34 | #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) > | ^ > mm/zsmalloc.c:122:9: note: in expansion of macro 'MAX' > 122 | MAX(32, (CONFIG_ZSMALLOC_CHAIN_SIZE << PAGE_SHIFT >> OBJ_INDEX_BITS)) > | ^~~ > mm/zsmalloc.c:140:59: note: in expansion of macro 'ZS_MIN_ALLOC_SIZE' > 140 | #define ZS_SIZE_CLASSES (DIV_ROUND_UP(ZS_MAX_ALLOC_SIZE - ZS_MIN_ALLOC_SIZE, \ > | ^~~~~~~~~~~~~~~~~ > mm/zsmalloc.c:224:39: note: in expansion of macro 'ZS_SIZE_CLASSES' > 224 | struct size_class *size_class[ZS_SIZE_CLASSES]; > | ^~~~~~~~~~~~~~~ > >> mm/zsmalloc.c:224:28: error: variably modified 'size_class' at file scope > 224 | struct size_class *size_class[ZS_SIZE_CLASSES]; Thanks. OK, so I think on hppa64 it wants chain-size to be explicitly casted to unsigned long. Let me try it and send out a fixup patch.
