[android-common:android13-5.10 11238/13329] mm/page_pinner.c:229:28: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *'))

[kernel test robot <lkp@intel.com>]

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tree:   https://android.googlesource.com/kernel/common android13-5.10
head:   a3fbac7deb9ced9fb9f5621becd276e7118d9f64
commit: 0445b67beee9639842df07960dcc3cc5bc30f0d0 [11238/13329] ANDROID: mm: page_pinner: change timestamp format
config: arm-randconfig-r024-20210903 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c9948e9254fbb6ea00f66c7b4542311d21e060be)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android13-5.10
        git checkout 0445b67beee9639842df07960dcc3cc5bc30f0d0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> mm/page_pinner.c:229:28: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *')) [-Wcompare-distinct-pointer-types]
                   unsigned long rem_usec = do_div(ts_usec, 1000000);
                                            ^~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/div64.h:226:28: note: expanded from macro 'do_div'
           (void)(((typeof((n)) *)0) == ((uint64_t *)0));  \
                  ~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~
   mm/page_pinner.c:299:13: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *')) [-Wcompare-distinct-pointer-types]
           rem_usec = do_div(ts_usec, 1000000);
                      ^~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/div64.h:226:28: note: expanded from macro 'do_div'
           (void)(((typeof((n)) *)0) == ((uint64_t *)0));  \
                  ~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~
   mm/page_pinner.c:322:22: warning: variable 'page_pinner' set but not used [-Wunused-but-set-variable]
           struct page_pinner *page_pinner;
                               ^
   3 warnings generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for USB_PHY
   Depends on USB_SUPPORT
   Selected by
   - GKI_HIDDEN_USB_CONFIGS
   WARNING: unmet direct dependencies detected for SND_VMASTER
   Depends on SOUND && !UML && SND
   Selected by
   - GKI_HIDDEN_SND_CONFIGS
   WARNING: unmet direct dependencies detected for SND_PCM_IEC958
   Depends on SOUND && !UML && SND
   Selected by
   - GKI_HIDDEN_SND_SOC_CONFIGS
   WARNING: unmet direct dependencies detected for DRM_TTM
   Depends on HAS_IOMEM && DRM && MMU
   Selected by
   - GKI_HIDDEN_DRM_CONFIGS && HAS_IOMEM && DRM
   WARNING: unmet direct dependencies detected for SND_JACK
   Depends on SOUND && !UML && SND
   Selected by
   - GKI_HIDDEN_SND_CONFIGS
   WARNING: unmet direct dependencies detected for SND_JACK_INPUT_DEV
   Depends on SOUND && !UML && SND && SND_JACK
   Selected by
   - GKI_HIDDEN_SND_CONFIGS
   WARNING: unmet direct dependencies detected for HMM_MIRROR
   Depends on MMU
   Selected by
   - GKI_HIDDEN_GPU_CONFIGS
   WARNING: unmet direct dependencies detected for SND_PCM_ELD
   Depends on SOUND && !UML && SND
   Selected by
   - GKI_HIDDEN_SND_CONFIGS
   WARNING: unmet direct dependencies detected for BALLOON_COMPACTION
   Depends on COMPACTION && MEMORY_BALLOON
   Selected by
   - GKI_HIDDEN_MM_CONFIGS


vim +229 mm/page_pinner.c

   210	
   211	static ssize_t
   212	print_page_pinner(bool longterm, char __user *buf, size_t count, struct captured_pinner *record)
   213	{
   214		int ret;
   215		unsigned long *entries;
   216		unsigned int nr_entries;
   217		char *kbuf;
   218	
   219		count = min_t(size_t, count, PAGE_SIZE);
   220		kbuf = kmalloc(count, GFP_KERNEL);
   221		if (!kbuf)
   222			return -ENOMEM;
   223	
   224		if (longterm) {
   225			ret = snprintf(kbuf, count, "Page pinned for %lld us\n",
   226				       record->elapsed);
   227		} else {
   228			s64 ts_usec = record->ts_usec;
 > 229			unsigned long rem_usec = do_div(ts_usec, 1000000);
   230	
   231			ret = snprintf(kbuf, count,
   232				       "Page pinned ts [%5lu.%06lu]\n",
   233				       (unsigned long)ts_usec, rem_usec);
   234		}
   235	
   236		if (ret >= count)
   237			goto err;
   238	
   239		/* Print information relevant to grouping pages by mobility */
   240		ret += snprintf(kbuf + ret, count - ret,
   241				"PFN %lu Block %lu type %s Flags %#lx(%pGp)\n",
   242				record->pfn,
   243				record->pfn >> pageblock_order,
   244				migratetype_names[record->page_mt],
   245				record->page_flags, &record->page_flags);
   246	
   247		if (ret >= count)
   248			goto err;
   249	
   250		nr_entries = stack_depot_fetch(record->handle, &entries);
   251		ret += stack_trace_snprint(kbuf + ret, count - ret, entries,
   252					   nr_entries, 0);
   253		if (ret >= count)
   254			goto err;
   255	
   256		ret += snprintf(kbuf + ret, count - ret, "\n");
   257		if (ret >= count)
   258			goto err;
   259	
   260		if (copy_to_user(buf, kbuf, ret))
   261			ret = -EFAULT;
   262	
   263		kfree(kbuf);
   264		return ret;
   265	
   266	err:
   267		kfree(kbuf);
   268		return -ENOMEM;
   269	}
   270	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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