1From 7e1f91c42ef5b0bf10afefec10dd08588df3ab1f Mon Sep 17 00:00:00 2001 2From: Hongxu Jia <hongxu.jia@windriver.com> 3Date: Tue, 15 Aug 2017 17:17:20 +0800 4Subject: [PATCH] fixheadercheck 5 6For some binaries we can get a invalid section alignment, for example if 7sh_align = 1 and sh_addralign is 0. In the case of a zero size section 8like 9".note.GNU-stack", this is irrelavent as far as I can tell and we 10shouldn't 11error in this case. 12 13RP 2014/6/11 14 15Upstream-Status: Pending 16 17Rebase to 0.170 18Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> 19 20--- 21 libelf/elf32_updatenull.c | 4 ++-- 22 1 file changed, 2 insertions(+), 2 deletions(-) 23 24diff --git a/libelf/elf32_updatenull.c b/libelf/elf32_updatenull.c 25index d0d4d1e..4ecf5a5 100644 26--- a/libelf/elf32_updatenull.c 27+++ b/libelf/elf32_updatenull.c 28@@ -354,8 +354,8 @@ __elfw2(LIBELFBITS,updatenull_wrlock) (Elf *elf, int *change_bop, size_t shnum) 29 we test for the alignment of the section being large 30 enough for the largest alignment required by a data 31 block. */ 32- if (unlikely (! powerof2 (shdr->sh_addralign)) 33- || unlikely ((shdr->sh_addralign ?: 1) < sh_align)) 34+ if (shdr->sh_size && (unlikely (! powerof2 (shdr->sh_addralign)) 35+ || unlikely ((shdr->sh_addralign ?: 1) < sh_align))) 36 { 37 __libelf_seterrno (ELF_E_INVALID_ALIGN); 38 return -1; 39