1From 04fb3f65ec186df5231dd0c21780a55dcc03c868 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 3/7] 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 libelf/elf32_updatenull.c | 4 ++-- 21 1 file changed, 2 insertions(+), 2 deletions(-) 22 23diff --git a/libelf/elf32_updatenull.c b/libelf/elf32_updatenull.c 24index 3e9ef61..5351518 100644 25--- a/libelf/elf32_updatenull.c 26+++ b/libelf/elf32_updatenull.c 27@@ -339,8 +339,8 @@ __elfw2(LIBELFBITS,updatenull_wrlock) (Elf *elf, int *change_bop, size_t shnum) 28 we test for the alignment of the section being large 29 enough for the largest alignment required by a data 30 block. */ 31- if (unlikely (! powerof2 (shdr->sh_addralign)) 32- || unlikely ((shdr->sh_addralign ?: 1) < sh_align)) 33+ if (shdr->sh_size && (unlikely (! powerof2 (shdr->sh_addralign)) 34+ || unlikely ((shdr->sh_addralign ?: 1) < sh_align))) 35 { 36 __libelf_seterrno (ELF_E_INVALID_ALIGN); 37 return -1; 38-- 392.7.4 40 41