tree:   git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e8e9cc31b0769f2152a6825560e4005b84b2c768
commit: 65525488fa86cda44fb6870f29e9859c974700cd [3983/4215] proc: add kpageidle file
config: parisc-allmodconfig (attached as .config)
reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout 65525488fa86cda44fb6870f29e9859c974700cd
  # save the attached .config to linux build tree
  make.cross ARCH=parisc 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/linkage.h:4:0,
                    from include/linux/preempt.h:9,
                    from include/linux/spinlock.h:50,
                    from include/linux/mmzone.h:7,
                    from include/linux/bootmem.h:7,
                    from fs/proc/page.c:1:
   fs/proc/page.c: In function 'kpageidle_write':
>> include/linux/compiler.h:447:38: error: call to '__compiletime_assert_453' declared with attribute error: BUILD_BUG failed
     _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                         ^
   include/linux/compiler.h:430:4: note: in definition of macro '__compiletime_assert'
       prefix ## suffix();    \
       ^
   include/linux/compiler.h:447:2: note: in expansion of macro '_compiletime_assert'
     _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
     ^
   include/linux/bug.h:50:37: note: in expansion of macro 'compiletime_assert'
    #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                        ^
   include/linux/bug.h:84:21: note: in expansion of macro 'BUILD_BUG_ON_MSG'
    #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
                        ^
>> arch/parisc/include/asm/uaccess.h:43:26: note: in expansion of macro 'BUILD_BUG'
    #define LDD_KERNEL(ptr)  BUILD_BUG()
                             ^
>> arch/parisc/include/asm/uaccess.h:93:14: note: in expansion of macro 'LDD_KERNEL'
         case 8: LDD_KERNEL(ptr); break;   \
                 ^
>> arch/parisc/include/asm/uaccess.h:40:18: note: in expansion of macro '__get_user'
    #define get_user __get_user
                     ^
>> fs/proc/page.c:453:8: note: in expansion of macro 'get_user'
       if (get_user(idle_bitmap, in)) {
           ^

vim +/get_user +453 fs/proc/page.c

   437		int bit;
   438	
   439		if (*ppos & KPMMASK || count & KPMMASK)
   440			return -EINVAL;
   441	
   442		pfn = *ppos * BITS_PER_BYTE;
   443		if (pfn >= max_pfn)
   444			return -ENXIO;
   445	
   446		end_pfn = pfn + count * BITS_PER_BYTE;
   447		if (end_pfn > max_pfn)
   448			end_pfn = ALIGN(max_pfn, KPMBITS);
   449	
   450		for (; pfn < end_pfn; pfn++) {
   451			bit = pfn % KPMBITS;
   452			if (bit == 0) {
 > 453				if (get_user(idle_bitmap, in)) {
   454					ret = -EFAULT;
   455					break;
   456				}
   457				in++;
   458			}
   459			if (idle_bitmap >> bit & 1) {
   460				page = kpageidle_get_page(pfn);
   461				if (page) {

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation