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[PR,other/86198] Libacktrace and ".note.gnu.build-id" section.

Message ID 20180618183513eucas1p15f94594f77bc3d50b9ebba0ada2b9009~5VOo6QefS2992429924eucas1p1l@eucas1p1.samsung.com
State New
Headers show
Series [PR,other/86198] Libacktrace and ".note.gnu.build-id" section. | expand

Commit Message

Denis Khalikov June 18, 2018, 6:35 p.m. UTC 
Hello,
this is a patch for PR other/86198
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86198
Thanks.

Comments

Richard Biener June 19, 2018, 9:05 a.m. UTC | #1 
On Mon, Jun 18, 2018 at 8:35 PM Denis Khalikov
<d.khalikov@partner.samsung.com> wrote:
>
> Hello,
> this is a patch for PR other/86198
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86198
> Thanks.

OK.

Richard.
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Patch

From: Denis Khalikov <d.khalikov@partner.samsung.com>
Date: Mon, 18 Jun 2018 20:46:39 +0300
Subject: [PATCH] PR other/86198

* elf.c (elf_add): Increase ".note.gnu.build-id" section size
checking up to 36 bytes.
---
 libbacktrace/ChangeLog | 6 ++++++
 libbacktrace/elf.c     | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index c01c7d8..2cc31bf 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,9 @@ 
+2018-06-18 Denis Khalikov <d.khalikov@partner.samsung.com>
+
+	PR other/86198
+	* elf.c (elf_add): Increase ".note.gnu.build-id" section size
+	checking up to 36 bytes.
+
 2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* configure: Regenerated.
diff --git a/libbacktrace/elf.c b/libbacktrace/elf.c
index 0fd5e6f..f4863f0 100644
--- a/libbacktrace/elf.c
+++ b/libbacktrace/elf.c
@@ -2868,7 +2868,7 @@  elf_add (struct backtrace_state *state, const char *filename, int descriptor,
 	  if (note->type == NT_GNU_BUILD_ID
 	      && note->namesz == 4
 	      && strncmp (note->name, "GNU", 4) == 0
-	      && shdr->sh_size < 12 + ((note->namesz + 3) & ~ 3) + note->descsz)
+	      && shdr->sh_size <= 12 + ((note->namesz + 3) & ~ 3) + note->descsz)
 	    {
 	      buildid_data = &note->name[0] + ((note->namesz + 3) & ~ 3);
 	      buildid_size = note->descsz;
-- 
1.9.1