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' Cc: <stable(a)vger.kernel.org&gt; Fixes: 1fcccbac89f5 ("elf coredump: replace ELF_CORE_EXTRA_* macros by functions") Reported-by: kernel test robot <lkp(a)intel.com&gt; Signed-off-by: Krzysztof Kozlowski <krzk(a)kernel.org&gt; --- Please let kbuild test it for a while before applying. I built it only on few configurations. This is similar fix to commit 42d91f612c87 ("um: Fix build error and kconfig for i386") although I put different fixes tag - the commit which introduced this part of code. --- arch/ia64/kernel/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 1a8df6669eee..18d6008b151f 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -41,7 +41,7 @@ obj-y += esi_stub.o # must be in kernel proper 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 -- 2.17.1