From: Alan Modra <amodra@gmail.com>
Date: Thu, 16 Jan 2014 01:20:28 +0000 (+1030)
Subject: Fix mips segfault on GOT access of absolute symbol
X-Git-Tag: gdb-7.8-release~1587
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b75d42bce5609effad86fb8b5d902f4c337e0cf9;p=external%2Fbinutils.git

Fix mips segfault on GOT access of absolute symbol

When a symbol is absolute, this code in mips_elf_record_got_page_entry
      entry = bfd_zalloc (sec->owner, sizeof (*entry));
segfaults.  sec == bfd_abs_section_ptr and sec->owner == NULL.

	* elfxx-mips.c (mips_elf_record_got_page_entry): Pass in a
	mips_elf_traverse_got_arg* rather than mips_got_info*.
	Adjust caller.  Alloc on output_bfd rather than symbol section
	owner.
---

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 0bf7665..6e1e334 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2014-01-16  Alan Modra  <amodra@gmail.com>
+
+	* elfxx-mips.c (mips_elf_record_got_page_entry): Pass in a
+	mips_elf_traverse_got_arg* rather than mips_got_info*.
+	Adjust caller.  Alloc on output_bfd rather than symbol section
+	owner.
+
 2014-01-15  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* elf32-i386.c (elf_i386_allocate_dynrelocs): Revert the last
diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
index d5f51a3..f51845b 100644
--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
@@ -4089,9 +4089,10 @@ mips_elf_pages_for_range (const struct mips_got_page_range *range)
 /* Record that G requires a page entry that can reach SEC + ADDEND.  */
 
 static bfd_boolean
-mips_elf_record_got_page_entry (struct mips_got_info *g,
+mips_elf_record_got_page_entry (struct mips_elf_traverse_got_arg *arg,
 				asection *sec, bfd_signed_vma addend)
 {
+  struct mips_got_info *g = arg->g;
   struct mips_got_page_entry lookup, *entry;
   struct mips_got_page_range **range_ptr, *range;
   bfd_vma old_pages, new_pages;
@@ -4108,7 +4109,7 @@ mips_elf_record_got_page_entry (struct mips_got_info *g,
   entry = (struct mips_got_page_entry *) *loc;
   if (!entry)
     {
-      entry = bfd_zalloc (sec->owner, sizeof (*entry));
+      entry = bfd_zalloc (arg->info->output_bfd, sizeof (*entry));
       if (!entry)
 	return FALSE;
 
@@ -4128,7 +4129,7 @@ mips_elf_record_got_page_entry (struct mips_got_info *g,
   range = *range_ptr;
   if (!range || addend < range->min_addend - 0xffff)
     {
-      range = bfd_zalloc (sec->owner, sizeof (*range));
+      range = bfd_zalloc (arg->info->output_bfd, sizeof (*range));
       if (!range)
 	return FALSE;
 
@@ -4248,7 +4249,7 @@ mips_elf_resolve_got_page_ref (void **refp, void *data)
       else
 	addend = isym->st_value + ref->addend;
     }
-  if (!mips_elf_record_got_page_entry (arg->g, sec, addend))
+  if (!mips_elf_record_got_page_entry (arg, sec, addend))
     {
       arg->g = NULL;
       return 0;