[melver:review/kmsan 36/43] arch/x86/mm/fault.c:299:28: error: 'KMSAN_VMALLOC_SHADOW_START' undeclared

[melver:review/kmsan 36/43] arch/x86/mm/fault.c:299:28: error: 'KMSAN_VMALLOC_SHADOW_START' undeclared

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/melver/linux.git review/kmsan
head:   b7e0800dfd0a0e1067ccbbbfd9b825b639606b24
commit: e809796b501e52d9dbb51a5e11c28a919d6e92b7 [36/43] x86: kmsan: sync metadata pages on page fault
config: i386-randconfig-a002-20211220 (https://download.01.org/0day-ci/archive/20211221/202112210650.eE1RkQXT-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/melver/linux.git/commit/?id=e809796b501e52d9dbb51a5e11c28a919d6e92b7
        git remote add melver https://git.kernel.org/pub/scm/linux/kernel/git/melver/linux.git
        git fetch --no-tags melver review/kmsan
        git checkout e809796b501e52d9dbb51a5e11c28a919d6e92b7
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   arch/x86/mm/fault.c:263:6: warning: no previous prototype for '__arch_sync_kernel_mappings' [-Wmissing-prototypes]
     263 | void __arch_sync_kernel_mappings(unsigned long start, unsigned long end)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/mm/fault.c: In function 'arch_sync_kernel_mappings':
>> arch/x86/mm/fault.c:299:28: error: 'KMSAN_VMALLOC_SHADOW_START' undeclared (first use in this function)
     299 |    start - VMALLOC_START + KMSAN_VMALLOC_SHADOW_START,
         |                            ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/mm/fault.c:299:28: note: each undeclared identifier is reported only once for each function it appears in
>> arch/x86/mm/fault.c:302:28: error: 'KMSAN_VMALLOC_ORIGIN_START' undeclared (first use in this function)
     302 |    start - VMALLOC_START + KMSAN_VMALLOC_ORIGIN_START,
         |                            ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/KMSAN_VMALLOC_SHADOW_START +299 arch/x86/mm/fault.c

   286	
   287	void arch_sync_kernel_mappings(unsigned long start, unsigned long end)
   288	{
   289		__arch_sync_kernel_mappings(start, end);
   290		/*
   291		 * KMSAN maintains two additional metadata page mappings for the
   292		 * [VMALLOC_START, VMALLOC_END) range. These mappings start at
   293		 * KMSAN_VMALLOC_SHADOW_START and KMSAN_VMALLOC_ORIGIN_START and
   294		 * have to be synced together with the vmalloc memory mapping.
   295		 */
   296		if (IS_ENABLED(CONFIG_KMSAN) &&
   297		    start >= VMALLOC_START && end < VMALLOC_END) {
   298			__arch_sync_kernel_mappings(
 > 299				start - VMALLOC_START + KMSAN_VMALLOC_SHADOW_START,
   300				end - VMALLOC_START + KMSAN_VMALLOC_SHADOW_START);
   301			__arch_sync_kernel_mappings(
 > 302				start - VMALLOC_START + KMSAN_VMALLOC_ORIGIN_START,
   303				end - VMALLOC_START + KMSAN_VMALLOC_ORIGIN_START);
   304		}
   305	}
   306	

---
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