reverted:
--- binutils-2.25/bfd/ChangeLog.rej
+++ binutils-2.25.orig/bfd/ChangeLog.rej
@@ -1,27 +0,0 @@
---- bfd/ChangeLog
-+++ bfd/ChangeLog
-@@ -1,24 +1,3 @@
--2015-03-06  H.J. Lu  <hongjiu.lu@intel.com>
--
--	Backport from master
--	2015-03-05  H.J. Lu  <hongjiu.lu@intel.com>
--
--	PR ld/pr15228
--	PR ld/pr17709
--	* elf-bfd.h (elf_backend_data): Add extern_protected_data.
--	* elf32-i386.c (elf_backend_extern_protected_data): New.
--	Defined to 1.
--	* elf64-x86-64.c (elf_backend_extern_protected_data): Likewise.
--	* elflink.c (_bfd_elf_adjust_dynamic_copy): Don't error on
--	copy relocs against protected symbols if extern_protected_data
--	is true.
--	(_bfd_elf_symbol_refs_local_p): Don't return true on protected
--	non-function symbols if extern_protected_data is true.
--	* elfxx-target.h (elf_backend_extern_protected_data): New.
--	Default to 0.
--	(elfNN_bed): Initialize extern_protected_data with
--	elf_backend_extern_protected_data.
--
- 2015-02-11  Alan Modra  <amodra@gmail.com>
- 
- 	Apply from master.
diff -u binutils-2.25/debian/changelog binutils-2.25/debian/changelog
--- binutils-2.25/debian/changelog
+++ binutils-2.25/debian/changelog
@@ -1,3 +1,10 @@
+binutils (2.25-5ubuntu7) vivid; urgency=medium
+
+  * Fix PR ld/18222, downgrade linker error on protected symbols in
+    .dynbss to a warning. Fixes libunwind build error.
+
+ -- Matthias Klose <doko@ubuntu.com>  Fri, 10 Apr 2015 17:42:44 +0200
+
 binutils (2.25-5ubuntu6) vivid; urgency=medium
 
   * Fix PR ld/18167, taken from the trunk.
diff -u binutils-2.25/debian/patches/series binutils-2.25/debian/patches/series
--- binutils-2.25/debian/patches/series
+++ binutils-2.25/debian/patches/series
@@ -35,0 +36 @@
+pr18222.diff
reverted:
--- binutils-2.25/ld/testsuite/ChangeLog.rej
+++ binutils-2.25.orig/ld/testsuite/ChangeLog.rej
@@ -1,28 +0,0 @@
---- ld/testsuite/ChangeLog
-+++ ld/testsuite/ChangeLog
-@@ -1,25 +1,3 @@
--2015-03-06  H.J. Lu  <hongjiu.lu@intel.com>
--
--	Backport from master
--	2015-03-05  H.J. Lu  <hongjiu.lu@intel.com>
--
--	PR ld/pr15228
--	PR ld/pr17709
--	* ld-i386/i386.exp (i386tests): Add a test for PR ld/17709.
--	* ld-i386/pr17709-nacl.rd: New file.
--	* ld-i386/pr17709.rd: Likewise.
--	* ld-i386/pr17709a.s: Likewise.
--	* ld-i386/pr17709b.s: Likewise.
--	* ld-i386/protected3.d: Updated.
--	* ld-i386/protected3.s: Likewise.
--	* ld-x86-64/pr17709-nacl.rd: New file.
--	* ld-x86-64/pr17709.rd: Likewise.
--	* ld-x86-64/pr17709a.s: Likewise.
--	* ld-x86-64/pr17709b.s: Likewise.
--	* ld-x86-64/protected3.d: Updated.
--	* ld-x86-64/protected3.s: Likewise.
--	* ld-x86-64/x86-64.exp (x86_64tests): Add a test for PR ld/17709.
--
- 2015-02-11  Alan Modra  <amodra@gmail.com>
- 
- 	Apply from master.
only in patch2:
unchanged:
--- binutils-2.25.orig/debian/patches/pr18222.diff
+++ binutils-2.25/debian/patches/pr18222.diff
@@ -0,0 +1,29 @@
+# DP: Fix PR ld/18222, downgrade linker error on protected symbols in .dynbss to a warning.
+
+bfd/
+
+2015-04-10  Alan Modra  <amodra@gmail.com>
+
+	PR ld/18222
+	* elflink.c (_bfd_elf_adjust_dynamic_copy): Don't report an error
+	on adding a protected visibility variable to .dynbss.
+
+--- a/bfd/elflink.c
++++ b/bfd/elflink.c
+@@ -2675,13 +2675,9 @@ _bfd_elf_adjust_dynamic_copy (struct bfd_link_info *info,
+   dynbss->size += h->size;
+ 
+   if (h->protected_def)
+-    {
+-      info->callbacks->einfo
+-	(_("%P: copy reloc against protected `%T' is invalid\n"),
+-	 h->root.root.string);
+-      bfd_set_error (bfd_error_bad_value);
+-      return FALSE;
+-    }
++    info->callbacks->einfo
++      (_("%P: copy reloc against protected `%T' is dangerous\n"),
++       h->root.root.string);
+ 
+   return TRUE;
+ }