ld.lld: error: relocation refers to a symbol in a discarded section: .Ltmp78

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   619d996c86421da1057d589123a28e2da0bf0785
commit: 62ce0782bbacd32ec10292b9bdd127330e9b6968 md: ensure child flush IO does not affect origin bio->bi_status
date:   5 weeks ago
config: arm-randconfig-003-20241122 (https://download.01.org/0day-ci/archive/20241123/202411231215.IsJm3IZm-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241123/202411231215.IsJm3IZm-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411231215.IsJm3IZm-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> ld.lld: error: relocation refers to a symbol in a discarded section: .Ltmp78
   >>> defined in vmlinux.a(drivers/md/md.o)
   >>> referenced by md.c
   >>>               drivers/md/md.o:(.alt.smp.init+0x120) in archive vmlinux.a

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