Title: [198680] trunk/Source/bmalloc
- Revision
- 198680
- Author
- [email protected]
- Date
- 2016-03-25 11:42:18 -0700 (Fri, 25 Mar 2016)
Log Message
bmalloc: stress_aligned fails when allocating a zero-sized object with XLarge alignment
https://bugs.webkit.org/show_bug.cgi?id=155896
Reviewed by Andreas Kling.
We normally filter zero-sized allocations into small allocations, but
a zero-sized allocation can sneak through if it requires sufficiently
large alignment.
* bmalloc/Heap.cpp:
(bmalloc::Heap::tryAllocateXLarge): Set a floor on allocation size to
catch zero-sized allocations.
Modified Paths
Diff
Modified: trunk/Source/bmalloc/ChangeLog (198679 => 198680)
--- trunk/Source/bmalloc/ChangeLog 2016-03-25 18:32:11 UTC (rev 198679)
+++ trunk/Source/bmalloc/ChangeLog 2016-03-25 18:42:18 UTC (rev 198680)
@@ -1,5 +1,20 @@
2016-03-25 Geoffrey Garen <[email protected]>
+ bmalloc: stress_aligned fails when allocating a zero-sized object with XLarge alignment
+ https://bugs.webkit.org/show_bug.cgi?id=155896
+
+ Reviewed by Andreas Kling.
+
+ We normally filter zero-sized allocations into small allocations, but
+ a zero-sized allocation can sneak through if it requires sufficiently
+ large alignment.
+
+ * bmalloc/Heap.cpp:
+ (bmalloc::Heap::tryAllocateXLarge): Set a floor on allocation size to
+ catch zero-sized allocations.
+
+2016-03-25 Geoffrey Garen <[email protected]>
+
bmalloc: Renamed LargeChunk => Chunk
https://bugs.webkit.org/show_bug.cgi?id=155894
Modified: trunk/Source/bmalloc/bmalloc/Heap.cpp (198679 => 198680)
--- trunk/Source/bmalloc/bmalloc/Heap.cpp 2016-03-25 18:32:11 UTC (rev 198679)
+++ trunk/Source/bmalloc/bmalloc/Heap.cpp 2016-03-25 18:42:18 UTC (rev 198680)
@@ -429,6 +429,7 @@
m_isAllocatingPages = true;
+ size = std::max(vmPageSize, size);
alignment = roundUpToMultipleOf<xLargeAlignment>(alignment);
XLargeRange range = m_xLargeMap.takeFree(alignment, size);
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