From: Mark Wielaard <mjw@redhat.com>
Date: Sat, 23 May 2015 22:07:33 +0000 (+0200)
Subject: libdwfl: Check mod is not NULL in check_module.
X-Git-Tag: elfutils-0.162~31
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e115bda377091bc211a786cdc7474337dd5508b6;p=thirdparty%2Felfutils.git

libdwfl: Check mod is not NULL in check_module.

check_module is called from dwfl_module_relocate_address and from
dwfl_module_address_section. Both could take a NULL Dwfl_Module if
an earlier error had occured. Make check_module return immediately
indicating an issue in that case.

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

diff --git a/libdwfl/ChangeLog b/libdwfl/ChangeLog
index 90fc0f309..dec3405be 100644
--- a/libdwfl/ChangeLog
+++ b/libdwfl/ChangeLog
@@ -1,3 +1,7 @@
+2015-05-24  Mark Wielaard  <mjw@redhat.com>
+
+	* derelocate.c (check_module): Check mod is not NULL.
+
 2015-05-22  Mark Wielaard  <mjw@redhat.com>
 
 	* link_map.c (dwfl_link_map_report): Allocate phdrs and dyn with
diff --git a/libdwfl/derelocate.c b/libdwfl/derelocate.c
index 2889fe415..48f819353 100644
--- a/libdwfl/derelocate.c
+++ b/libdwfl/derelocate.c
@@ -285,6 +285,9 @@ dwfl_module_relocation_info (Dwfl_Module *mod, unsigned int idx,
 static bool
 check_module (Dwfl_Module *mod)
 {
+  if (mod == NULL)
+    return true;
+
   if (INTUSE(dwfl_module_getsymtab) (mod) < 0)
     {
       Dwfl_Error error = dwfl_errno ();