Commit-ID: 9f88b906b4455465d60ac18b8c95904f320038d5 Gitweb: http://git.kernel.org/tip/9f88b906b4455465d60ac18b8c95904f320038d5 Author: Jan Beulich <JBeulich@xxxxxxxx> AuthorDate: Thu, 3 Jul 2014 15:34:38 +0100 Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> CommitDate: Thu, 10 Jul 2014 15:59:56 -0700 x86-64, vdso: Fix vDSO build breakage due to empty .rela.dyn 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@xxxxxxxx> Link: http://lkml.kernel.org/r/53B5861E02000078000204D1@xxxxxxxxxxxxxxxxxxxx Acked-by: Andy Lutomirski <luto@xxxxxxxxxxxxxx> Tested-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> Tested-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> --- arch/x86/vdso/vdso2c.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/vdso/vdso2c.h b/arch/x86/vdso/vdso2c.h index df95a2f..11b65d4 100644 --- a/arch/x86/vdso/vdso2c.h +++ b/arch/x86/vdso/vdso2c.h @@ -93,6 +93,9 @@ static void BITSFUNC(copy_section)(struct BITSFUNC(fake_sections) *out, 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"); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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