Title: [288866] trunk/Source/bmalloc
- Revision
- 288866
- Author
- [email protected]
- Date
- 2022-01-31 20:32:46 -0800 (Mon, 31 Jan 2022)
Log Message
[libpas] get_num_free_bytes_for_each_heap_callback() is called with `arg` pointing to uninitialized stack memory
<https://webkit.org/b/235931>
<rdar://problem/88303899>
Reviewed by Yusuke Suzuki.
* libpas/src/libpas/pas_all_heaps.c:
(pas_all_heaps_get_num_free_bytes):
- Initialize `result` stack variable to zero.
Modified Paths
Diff
Modified: trunk/Source/bmalloc/ChangeLog (288865 => 288866)
--- trunk/Source/bmalloc/ChangeLog 2022-02-01 02:57:22 UTC (rev 288865)
+++ trunk/Source/bmalloc/ChangeLog 2022-02-01 04:32:46 UTC (rev 288866)
@@ -1,3 +1,15 @@
+2022-01-31 David Kilzer <[email protected]>
+
+ [libpas] get_num_free_bytes_for_each_heap_callback() is called with `arg` pointing to uninitialized stack memory
+ <https://webkit.org/b/235931>
+ <rdar://problem/88303899>
+
+ Reviewed by Yusuke Suzuki.
+
+ * libpas/src/libpas/pas_all_heaps.c:
+ (pas_all_heaps_get_num_free_bytes):
+ - Initialize `result` stack variable to zero.
+
2022-01-21 Commit Queue <[email protected]>
Unreviewed, reverting r288400.
Modified: trunk/Source/bmalloc/libpas/src/libpas/pas_all_heaps.c (288865 => 288866)
--- trunk/Source/bmalloc/libpas/src/libpas/pas_all_heaps.c 2022-02-01 02:57:22 UTC (rev 288865)
+++ trunk/Source/bmalloc/libpas/src/libpas/pas_all_heaps.c 2022-02-01 04:32:46 UTC (rev 288866)
@@ -193,7 +193,7 @@
size_t pas_all_heaps_get_num_free_bytes(pas_lock_hold_mode heap_lock_hold_mode)
{
- size_t result;
+ size_t result = 0;
pas_heap_lock_lock_conditionally(heap_lock_hold_mode);
pas_all_heaps_for_each_heap(get_num_free_bytes_for_each_heap_callback, &result);
result += pas_utility_heap_get_num_free_bytes();
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