Don't use the main arena in retry path if it is corrupt

If allocation on a non-main arena fails, the main arena is used
without checking to see if it is corrupt.  Add a check that avoids the
main arena if it is corrupt.

	* malloc/arena.c (arena_get_retry): Don't use main_arena if it is
	corrupt.

1 files changed, 3 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 1b5b03e666..dae71cecec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2015-08-24  Siddhesh Poyarekar  <siddhesh@redhat.com>
 
+	* malloc/arena.c (arena_get_retry): Don't use main_arena if it
+	is corrupt.
+
 	* malloc/arena.c (arena_get2): Drop unused argument.
 	(arena_lock): Adjust.
 	(arena_get_retry): Likewise.