linux-kernel - mm/gup.o: warning: objtool: faultin_page_range+0x100: unreachable instruction

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Message-ID: <202407230630.3vGhnlFB-lkp@intel.com>
Date: Tue, 23 Jul 2024 06:56:46 +0800
From: kernel test robot <lkp@...el.com>
To: David Hildenbrand <david@...hat.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: mm/gup.o: warning: objtool: faultin_page_range+0x100: unreachable
 instruction

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   933069701c1b507825b514317d4edd5d3fd9d417
commit: 631426ba1d45a8672b177ee85ad4cabe760dd131 mm/madvise: make MADV_POPULATE_(READ|WRITE) handle VM_FAULT_RETRY properly
date:   3 months ago
config: loongarch-randconfig-001-20240722 (https://download.01.org/0day-ci/archive/20240723/202407230630.3vGhnlFB-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240723/202407230630.3vGhnlFB-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407230630.3vGhnlFB-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/gup.o: warning: objtool: get_user_pages_remote+0x160: unreachable instruction
   mm/gup.o: warning: objtool: get_user_pages+0x12c: unreachable instruction
   mm/gup.o: warning: objtool: get_user_pages_unlocked+0x138: unreachable instruction
   mm/gup.o: warning: objtool: __gup_longterm_locked+0x3d8: unreachable instruction
>> mm/gup.o: warning: objtool: faultin_page_range+0x100: unreachable instruction


objdump-func vmlinux.o faultin_page_range:

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki