Hi George, Thank you for the patch! Yet something to improve: [auto build test ERROR on vbabka-slab/for-next] [also build test ERROR on linus/master v6.2-rc5 next-20230124] [cannot apply to akpm-mm/mm-everything] [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/George-Prekas/mm-kmemleak-properly-disable-task-stack-scanning/20230124-010911 base: git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git for-next patch link: https://lore.kernel.org/r/20230123170419.7292-2-george%40enfabrica.net patch subject: [PATCH 1/9] mm: kmemleak: properly disable task stack scanning config: s390-randconfig-r044-20230123 (https://download.01.org/0day-ci/archive/20230124/202301241343.blMmgE7L-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/f0d9df4305849ecea4402bc614cadb0dd357da77 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review George-Prekas/mm-kmemleak-properly-disable-task-stack-scanning/20230124-010911 git checkout f0d9df4305849ecea4402bc614cadb0dd357da77 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from mm/kmemleak.c:85: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from mm/kmemleak.c:85: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from mm/kmemleak.c:85: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> mm/kmemleak.c:1244:32: error: incompatible pointer to integer conversion passing 'const void *' to parameter of type 'unsigned long' [-Wint-conversion] object = find_and_get_object(ptr, 0); ^~~ mm/kmemleak.c:561:66: note: passing argument to parameter 'ptr' here static struct kmemleak_object *find_and_get_object(unsigned long ptr, int alias) ^ 12 warnings and 1 error generated. vim +1244 mm/kmemleak.c 1233 1234 /** 1235 * kmemleak_mark_stack - mark the allocated object as a kernel stack 1236 * 1237 * @ptr: pointer to beginning of the object 1238 */ 1239 void __ref kmemleak_mark_stack(const void *ptr) 1240 { 1241 struct kmemleak_object *object; 1242 1243 if (kmemleak_enabled && ptr && !IS_ERR(ptr)) { > 1244 object = find_and_get_object(ptr, 0); 1245 if (object) { 1246 object->flags |= OBJECT_STACK; 1247 put_object(object); 1248 } 1249 } 1250 } 1251 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
