mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-08 22:45:43 +00:00
49 lines
2.3 KiB
Diff
49 lines
2.3 KiB
Diff
From 61e16c92ff24bb71b9b7309a9d6d470ee91738bc Mon Sep 17 00:00:00 2001
|
|
From: Bartek Nowierski <bartekn@chromium.org>
|
|
Date: Wed, 21 Jul 2021 15:01:38 +0000
|
|
Subject: [PATCH] [PA] Make GetUsableSize() handle nullptr gracefully
|
|
|
|
malloc_usable_size() is expected to not crush on NULL and return 0.
|
|
|
|
Bug: 1221442
|
|
Change-Id: I6a3b90dcf3a8ad18114c206d87b98f60d5f50eb1
|
|
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3042177
|
|
Commit-Queue: Bartek Nowierski <bartekn@chromium.org>
|
|
Commit-Queue: Kentaro Hara <haraken@chromium.org>
|
|
Auto-Submit: Bartek Nowierski <bartekn@chromium.org>
|
|
Reviewed-by: Kentaro Hara <haraken@chromium.org>
|
|
Cr-Commit-Position: refs/heads/master@{#903900}
|
|
---
|
|
.../allocator/partition_allocator/partition_alloc_unittest.cc | 4 ++++
|
|
base/allocator/partition_allocator/partition_root.h | 3 +++
|
|
2 files changed, 7 insertions(+)
|
|
|
|
diff --git a/base/allocator/partition_allocator/partition_alloc_unittest.cc b/base/allocator/partition_allocator/partition_alloc_unittest.cc
|
|
index c12120114aa7..8863984cd805 100644
|
|
--- a/base/allocator/partition_allocator/partition_alloc_unittest.cc
|
|
+++ b/base/allocator/partition_allocator/partition_alloc_unittest.cc
|
|
@@ -2838,6 +2838,10 @@ TEST_F(PartitionAllocTest, OptimizedGetSlotNumber) {
|
|
}
|
|
}
|
|
|
|
+TEST_F(PartitionAllocTest, GetUsableSizeNull) {
|
|
+ EXPECT_EQ(0ULL, PartitionRoot<ThreadSafe>::GetUsableSize(nullptr));
|
|
+}
|
|
+
|
|
TEST_F(PartitionAllocTest, GetUsableSize) {
|
|
size_t delta = SystemPageSize() + 1;
|
|
for (size_t size = 1; size <= kMinDirectMappedDownsize; size += delta) {
|
|
diff --git a/base/allocator/partition_allocator/partition_root.h b/base/allocator/partition_allocator/partition_root.h
|
|
index b72a1d94a4e4..baac952597d1 100644
|
|
--- a/base/allocator/partition_allocator/partition_root.h
|
|
+++ b/base/allocator/partition_allocator/partition_root.h
|
|
@@ -1220,6 +1220,9 @@ ALWAYS_INLINE bool PartitionRoot<thread_safe>::TryRecommitSystemPagesForData(
|
|
// PartitionAlloc's internal data. Used as malloc_usable_size.
|
|
template <bool thread_safe>
|
|
ALWAYS_INLINE size_t PartitionRoot<thread_safe>::GetUsableSize(void* ptr) {
|
|
+ // malloc_usable_size() is expected to handle NULL gracefully and return 0.
|
|
+ if (!ptr)
|
|
+ return 0;
|
|
auto* slot_span = SlotSpan::FromSlotInnerPtr(ptr);
|
|
auto* root = FromSlotSpan(slot_span);
|
|
return slot_span->GetUsableSize(root);
|