Submitted By: Jonathan Norman (jonathan at bluesquarelinux dot co dot uk)
Date: 2012-02-16
Initial Package Version: 2.15
Origin: http://sourceware.org/ml/libc-alpha/2011-06/msg00010.html
Upstream Status: Submitted
Description: Fixes segfault with sound devices / output.

diff -Naur eglibc-2_15.orig/elf/dl-close.c eglibc-2_15/elf/dl-close.c
--- eglibc-2_15.orig/elf/dl-close.c	2012-02-16 09:31:47.478224779 +0000
+++ eglibc-2_15/elf/dl-close.c	2012-02-16 09:37:17.287098571 +0000
@@ -119,17 +119,8 @@
   if (map->l_direct_opencount > 0 || map->l_type != lt_loaded
       || dl_close_state != not_pending)
     {
-      if (map->l_direct_opencount == 0)
-	{
-	  if (map->l_type == lt_loaded)
-	    dl_close_state = rerun;
-	  else if (map->l_type == lt_library)
-	    {
-	      struct link_map **oldp = map->l_initfini;
-	      map->l_initfini = map->l_orig_initfini;
-	      _dl_scope_free (oldp);
-	    }
-	}
+      if (map->l_direct_opencount == 0 && map->l_type == lt_loaded)
+	dl_close_state = rerun;
 
       /* There are still references to this object.  Do nothing more.  */
       if (__builtin_expect (GLRO_dl_debug_mask & DL_DEBUG_FILES, 0))
diff -Naur eglibc-2_15.orig/elf/dl-deps.c eglibc-2_15/elf/dl-deps.c
--- eglibc-2_15.orig/elf/dl-deps.c	2012-02-16 09:31:47.474224671 +0000
+++ eglibc-2_15/elf/dl-deps.c	2012-02-16 09:39:54.791335897 +0000
@@ -489,6 +489,8 @@
 		  nneeded * sizeof needed[0]);
 	  atomic_write_barrier ();
 	  l->l_initfini = l_initfini;
+	  l->l_free_initfini = 1;
+
 	}
 
       /* If we have no auxiliary objects just go on to the next map.  */
@@ -689,6 +691,7 @@
   l_initfini[nlist] = NULL;
   atomic_write_barrier ();
   map->l_initfini = l_initfini;
+  map->l_free_initfini = 1;
   if (l_reldeps != NULL)
     {
       atomic_write_barrier ();
@@ -697,7 +700,7 @@
       _dl_scope_free (old_l_reldeps);
     }
   if (old_l_initfini != NULL)
-      map->l_orig_initfini = old_l_initfini;
+    _dl_scope_free (old_l_initfini);
 
   if (errno_reason)
     _dl_signal_error (errno_reason == -1 ? 0 : errno_reason, objname,
diff -Naur eglibc-2_15.orig/elf/dl-libc.c eglibc-2_15/elf/dl-libc.c
--- eglibc-2_15.orig/elf/dl-libc.c	2012-02-16 09:31:47.478224779 +0000
+++ eglibc-2_15/elf/dl-libc.c	2012-02-16 09:32:43.619735410 +0000
@@ -284,6 +284,10 @@
 	      if (! old->dont_free)
 		free (old);
 	    }
+
+	  /* Free the initfini dependency list.  */
+	  if (l->l_free_initfini)
+	    free (l->l_initfini);
 	}
 
       if (__builtin_expect (GL(dl_ns)[ns]._ns_global_scope_alloc, 0) != 0
diff -Naur eglibc-2_15.orig/elf/rtld.c eglibc-2_15/elf/rtld.c
--- eglibc-2_15.orig/elf/rtld.c	2012-02-16 09:31:47.470224563 +0000
+++ eglibc-2_15/elf/rtld.c	2012-02-16 09:35:01.611448263 +0000
@@ -2277,6 +2277,7 @@
 	      lnp->dont_free = 1;
 	      lnp = lnp->next;
 	    }
+          l->l_free_initfini = 0;
 
 	  if (l != &GL(dl_rtld_map))
 	    _dl_relocate_object (l, l->l_scope, GLRO(dl_lazy) ? RTLD_LAZY : 0,
diff -Naur eglibc-2_15.orig/include/link.h eglibc-2_15/include/link.h
--- eglibc-2_15.orig/include/link.h	2012-02-16 09:31:47.710231021 +0000
+++ eglibc-2_15/include/link.h	2012-02-16 09:42:04.610828212 +0000
@@ -192,6 +192,9 @@
 						 during LD_TRACE_PRELINKING=1
 						 contains any DT_SYMBOLIC
 						 libraries.  */
+    unsigned int l_free_initfini:1; /* Nonzero if l_initfini can be
+				       freed, ie. not allocated with
+				       the dummy malloc in ld.so.  */
 
     /* Collected information about own RPATH directories.  */
     struct r_search_path_struct l_rpath_dirs;
@@ -240,9 +243,6 @@
 
     /* List of object in order of the init and fini calls.  */
     struct link_map **l_initfini;
-    /* The init and fini list generated at startup, saved when the
-       object is also loaded dynamically.  */
-    struct link_map **l_orig_initfini;
 
     /* List of the dependencies introduced through symbol binding.  */
     struct link_map_reldeps