Merge changes between r25087 and r25236 from /fsf/trunk.HEADmaster

git-svn-id: svn://svn.eglibc.org/trunk@25237 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 9 insertions, 10 deletions

diff --git a/libc/nptl/allocatestack.c b/libc/nptl/allocatestack.c
index 2a5ac2211..13eca47cf 100644
--- a/libc/nptl/allocatestack.c
+++ b/libc/nptl/allocatestack.c
@@ -242,7 +242,11 @@ get_cached_stack (size_t *sizep, void **memp)
 
   /* Clear the DTV.  */
   dtv_t *dtv = GET_DTV (TLS_TPADJ (result));
-  _dl_clear_dtv (dtv);
+  for (size_t cnt = 0; cnt < dtv[-1].counter; ++cnt)
+    if (! dtv[1 + cnt].pointer.is_static
+	&& dtv[1 + cnt].pointer.val != TLS_DTV_UNALLOCATED)
+      free (dtv[1 + cnt].pointer.val);
+  memset (dtv, '\0', (dtv[-1].counter + 1) * sizeof (dtv_t));
 
   /* Re-initialize the TLS.  */
   _dl_allocate_tls_init (TLS_TPADJ (result));
@@ -1173,18 +1177,13 @@ init_one_static_tls (struct pthread *curp, struct link_map *map)
 #  error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
 # endif
 
-  /* Initialize the memory.  */
-  memset (__mempcpy (dest, map->l_tls_initimage, map->l_tls_initimage_size),
-	  '\0', map->l_tls_blocksize - map->l_tls_initimage_size);
-
   /* Fill in the DTV slot so that a later LD/GD access will find it.  */
-  dtv[map->l_tls_modid].pointer.is_static = true;
-  /* Pairs against the read barrier in tls_get_attr_tail, guaranteeing
-     any thread waiting for an update to pointer.val sees the
-     initimage write.  */
-  atomic_write_barrier ();
   dtv[map->l_tls_modid].pointer.val = dest;
+  dtv[map->l_tls_modid].pointer.is_static = true;
 
+  /* Initialize the memory.  */
+  memset (__mempcpy (dest, map->l_tls_initimage, map->l_tls_initimage_size),
+	  '\0', map->l_tls_blocksize - map->l_tls_initimage_size);
 }
 
 void