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authorFlorian Weimer <fweimer@redhat.com>2015-10-06 13:12:36 +0200
committerFlorian Weimer <fweimer@redhat.com>2015-10-06 13:22:56 +0200
commitf586e1328681b400078c995a0bb6ad301ef73549 (patch)
treebf4c5da9f4100db68bd62f244109687bed3d76dc /stdlib
parentbe64c2ef2ac2357ddff61841f2cc8246e5da1b20 (diff)
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Harden tls_dtor_list with pointer mangling [BZ #19018]
Diffstat (limited to 'stdlib')
-rw-r--r--stdlib/cxa_thread_atexit_impl.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/stdlib/cxa_thread_atexit_impl.c b/stdlib/cxa_thread_atexit_impl.c
index 2d5d56a..5717f09 100644
--- a/stdlib/cxa_thread_atexit_impl.c
+++ b/stdlib/cxa_thread_atexit_impl.c
@@ -98,6 +98,10 @@ static __thread struct link_map *lm_cache;
int
__cxa_thread_atexit_impl (dtor_func func, void *obj, void *dso_symbol)
{
+#ifdef PTR_MANGLE
+ PTR_MANGLE (func);
+#endif
+
/* Prepend. */
struct dtor_list *new = calloc (1, sizeof (struct dtor_list));
new->func = func;
@@ -142,9 +146,13 @@ __call_tls_dtors (void)
while (tls_dtor_list)
{
struct dtor_list *cur = tls_dtor_list;
+ dtor_func func = cur->func;
+#ifdef PTR_DEMANGLE
+ PTR_DEMANGLE (func);
+#endif
tls_dtor_list = tls_dtor_list->next;
- cur->func (cur->obj);
+ func (cur->obj);
/* Ensure that the MAP dereference happens before
l_tls_dtor_count decrement. That way, we protect this access from a