From: Mark Wielaard <mjw@redhat.com>
Date: Tue, 27 May 2014 08:25:27 +0000 (+0200)
Subject: readelf: Skip section if name is NULL in print_debug.
X-Git-Tag: elfutils-0.160~21
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=903f334ef06fbec28d23b7c8ea3c79cacc1da14f;p=thirdparty%2Felfutils.git

readelf: Skip section if name is NULL in print_debug.

Don't crash and burn when a section doesn't have a name (possibly invalid
ELF file string table). Just try the next section instead of calling strcmp
on NULL.

Signed-off-by: Mark Wielaard <mjw@redhat.com>
---

diff --git a/src/ChangeLog b/src/ChangeLog
index 5535cff72..7e680361a 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2014-05-27  Mark Wielaard  <mjw@redhat.com>
+
+	* readelf.c (print_debug): Skip section if name is NULL.
+
 2014-05-26  Mark Wielaard  <mjw@redhat.com>
 
 	* readelf.c (handle_relocs_rela): Print header like handle_relocs_rel
diff --git a/src/readelf.c b/src/readelf.c
index ea14a09b9..6bbe436d3 100644
--- a/src/readelf.c
+++ b/src/readelf.c
@@ -7962,8 +7962,10 @@ print_debug (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr)
 				       / sizeof (debug_sections[0]));
 	  const char *name = elf_strptr (ebl->elf, shstrndx,
 					 shdr->sh_name);
-	  int n;
+	  if (name == NULL)
+	    continue;
 
+	  int n;
 	  for (n = 0; n < ndebug_sections; ++n)
 	    if (strcmp (name, debug_sections[n].name) == 0
 #if USE_ZLIB