Re: [davidhildenbrand:fork_rmap_batching_mm_unstable 104/141] make[4]: *** No rule to make target 'kernel/elfcorehdr.o', needed by 'kernel/built-in.a'.

[Baoquan He <bhe@redhat.com>]

On 01/29/24 at 08:12pm, kernel test robot wrote:
> Hi Baoquan,
> 
> First bad commit (maybe != root cause):
> 
> tree:   https://github.com/davidhildenbrand/linux fork_rmap_batching_mm_unstable
> head:   b652ec55c236cca5d0247cf66864971cc2ffea2d
> commit: 21b8f7d4d9d70fec7ff6bbd973e485fa1226b156 [104/141] crash: remove dependency of FA_DUMP on CRASH_DUMP
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240129/202401292018.RTtZWk0P-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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202401292018.RTtZWk0P-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
......
> >> make[4]: *** No rule to make target 'kernel/elfcorehdr.o', needed by 'kernel/built-in.a'.

This is fixed by Stephen at bottom. Now I can see it on linux-next:

commit 12f1531b9f77 Merge branch 'mm-everything' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

commit 02002068055e2172e49d14f9fb11ab277b8d8094
Author: Stephen Rothwell <sfr@canb.auug.org.au>
Date:   Thu Jan 25 09:58:54 2024 +1100

    fix up for "crash: remove dependency of FA_DUMP on CRASH_DUMP"

    Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

diff --git a/kernel/crash_dump.c b/kernel/elfcorehdr.c
similarity index 100%
rename from kernel/crash_dump.c
rename to kernel/elfcorehdr.c