glibc/glibc-fix-noload.patch

commit 675155e9084e060fd0e1e637b843f14e82898aa5
Author: Andreas Schwab <schwab@redhat.com>
Date:   Wed Sep 22 12:06:30 2010 +0200

    Fix memory leak on init/fini dependency list

 2010-09-27  Andreas Schwab  <schwab@redhat.com>
 
	* include/link.h (struct link_map): Add l_free_initfini.
	* elf/dl-deps.c (_dl_map_object_deps): Set it when assigning
	l_initfini.
	* elf/rtld.c (dl_main): Clear it on all objects loaded on startup.
	* elf/dl-libc.c (free_mem): Free l_initfini if l_free_initfini is
	set.

Index: glibc-2.15/elf/dl-close.c
===================================================================
--- glibc-2.15.orig/elf/dl-close.c
+++ glibc-2.15/elf/dl-close.c
@@ -1,5 +1,5 @@
 /* Close a shared object opened by `_dl_open'.
-   Copyright (C) 1996-2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009, 2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -119,17 +119,8 @@ _dl_close_worker (struct link_map *map)
   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))
Index: glibc-2.15/elf/dl-libc.c
===================================================================
--- glibc-2.15.orig/elf/dl-libc.c
+++ glibc-2.15/elf/dl-libc.c
@@ -270,13 +270,13 @@ libc_freeres_fn (free_mem)
 
   for (Lmid_t ns = 0; ns < GL(dl_nns); ++ns)
     {
-      /* Remove all additional names added to the objects.  */
       for (l = GL(dl_ns)[ns]._ns_loaded; l != NULL; l = l->l_next)
 	{
 	  struct libname_list *lnp = l->l_libname->next;
 
 	  l->l_libname->next = NULL;
 
+	  /* Remove all additional names added to the objects.  */
 	  while (lnp != NULL)
 	    {
 	      struct libname_list *old = lnp;
@@ -284,6 +284,10 @@ libc_freeres_fn (free_mem)
 	      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
Index: glibc-2.15/elf/rtld.c
===================================================================
--- glibc-2.15.orig/elf/rtld.c
+++ glibc-2.15/elf/rtld.c
@@ -2323,6 +2323,7 @@ ERROR: ld.so: object '%s' cannot be load
 	      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,
Index: glibc-2.15/include/link.h
===================================================================
--- glibc-2.15.orig/include/link.h
+++ glibc-2.15/include/link.h
@@ -1,6 +1,6 @@
 /* Data structure for communication from the run-time dynamic linker for
    loaded ELF shared objects.
-   Copyright (C) 1995-2006, 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1995-2006, 2007, 2009, 2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -192,6 +192,9 @@ struct link_map
 						 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 @@ struct link_map
 
     /* 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
Index: glibc-2.15/elf/dl-deps.c
===================================================================
--- glibc-2.15.orig/elf/dl-deps.c
+++ glibc-2.15/elf/dl-deps.c
@@ -489,6 +489,7 @@ _dl_map_object_deps (struct link_map *ma
 		  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 +690,7 @@ Filters not supported with LD_TRACE_PREL
   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 +699,7 @@ Filters not supported with LD_TRACE_PREL
       _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,