The patch titled Subject: ia64: fix build error with !COREDUMP has been added to the -mm tree. Its filename is ia64-fix-build-error-with-coredump.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/ia64-fix-build-error-with-coredump.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/ia64-fix-build-error-with-coredump.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Subject: ia64: fix build error with !COREDUMP Fix linkage error when CONFIG_BINFMT_ELF is selected but CONFIG_COREDUMP is not: ia64-linux-ld: arch/ia64/kernel/elfcore.o: in function `elf_core_write_extra_phdrs': elfcore.c:(.text+0x172): undefined reference to `dump_emit' ia64-linux-ld: arch/ia64/kernel/elfcore.o: in function `elf_core_write_extra_data': elfcore.c:(.text+0x2b2): undefined reference to `dump_emit' Link: https://lkml.kernel.org/r/20200819064146.12529-1-krzk@xxxxxxxxxx Fixes: 1fcccbac89f5 ("elf coredump: replace ELF_CORE_EXTRA_* macros by functions") Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> Cc: Tony Luck <tony.luck@xxxxxxxxx> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/ia64/kernel/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/ia64/kernel/Makefile~ia64-fix-build-error-with-coredump +++ a/arch/ia64/kernel/Makefile @@ -41,7 +41,7 @@ obj-y += esi_stub.o # must be in kern endif obj-$(CONFIG_INTEL_IOMMU) += pci-dma.o -obj-$(CONFIG_BINFMT_ELF) += elfcore.o +obj-$(CONFIG_ELF_CORE) += elfcore.o # fp_emulate() expects f2-f5,f16-f31 to contain the user-level state. CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31 _ Patches currently in -mm which might be from krzk@xxxxxxxxxx are ia64-fix-build-error-with-coredump.patch