Re: [PATCH 1/9] mm: kmemleak: properly disable task stack scanning

kernel test robot
2023-01-24T05:47:52Z

Hi George,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on vbabka-slab/for-next]
[also build test WARNING on linus/master v6.2-rc5 next-20230123]
[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: arc-randconfig-r043-20230123 (https://download.01.org/0day-ci/archive/20230124/202301241355.ytFzL2p6-lkp@intel.com/config)
compiler: arceb-elf-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/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=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc 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 >>):

mm/kmemleak.c: In function 'kmemleak_mark_stack':
>> mm/kmemleak.c:1244:46: warning: passing argument 1 of 'find_and_get_object' makes integer from pointer without a cast [-Wint-conversion]
1244 | object = find_and_get_object(ptr, 0);
| ^~~
| |
| const void *
mm/kmemleak.c:561:66: note: expected 'long unsigned int' but argument is of type 'const void *'
561 | static struct kmemleak_object *find_and_get_object(unsigned long ptr, int alias)
| ~~~~~~~~~~~~~~^~~

vim +/find_and_get_object +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

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0-DAY CI Kernel Test Service