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authorSiddhesh Poyarekar <siddhesh@redhat.com>2015-08-24 14:33:07 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2015-08-24 14:33:07 +0530
commitc3b9ef8dfc83e9d17da5adc73709d2f7dfbbaf13 (patch)
tree904dfa22fa029a0fa6b8b43af3f47a3c935f8f28 /malloc
parent92a9b22d70b85b7edd0484db8bf2465a969fb09e (diff)
downloadglibc-c3b9ef8dfc83e9d17da5adc73709d2f7dfbbaf13.tar.gz
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.
Diffstat (limited to 'malloc')
-rw-r--r--malloc/arena.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/malloc/arena.c b/malloc/arena.c
index cfec94d182..b44e307ade 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -909,6 +909,10 @@ arena_get_retry (mstate ar_ptr, size_t bytes)
if (ar_ptr != &main_arena)
{
(void) mutex_unlock (&ar_ptr->mutex);
+ /* Don't touch the main arena if it is corrupt. */
+ if (arena_is_corrupt (&main_arena))
+ return NULL;
+
ar_ptr = &main_arena;
(void) mutex_lock (&ar_ptr->mutex);
}