Messages in this thread Patch in this message | | | Date | Thu, 03 Jul 2014 15:34:38 +0100 | From | "Jan Beulich" <> | Subject | [PATCH] x86-64: fix vDSO build |
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Certain ld versions (observed with 2.20.0) put an empty .rela.dyn section into shared object files, breaking the assumption on the number of sections to be copied to the final output. Simply discard any empty SHT_REL and SHT_RELA sections to address this.
Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Andy Lutomirski <luto@amacapital.net> --- arch/x86/vdso/vdso2c.h | 3 +++ 1 file changed, 3 insertions(+)
--- 3.16-rc3/arch/x86/vdso/vdso2c.h +++ 3.16-rc3-x86-vdso-build/arch/x86/vdso/vdso2c.h @@ -93,6 +93,9 @@ static void BITSFUNC(copy_section)(struc uint64_t flags = GET_LE(&in->sh_flags); bool copy = flags & SHF_ALLOC && + (GET_LE(&in->sh_size) || + (GET_LE(&in->sh_type) != SHT_RELA && + GET_LE(&in->sh_type) != SHT_REL)) && strcmp(name, ".altinstructions") && strcmp(name, ".altinstr_replacement");
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