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8361487: [ubsan] test_committed_virtualmemory.cpp check_covered_pages shows overflow

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Reviewed-by: jsjolen, phubner
This commit is contained in:
Afshin Zafari 2025-11-14 09:03:11 +00:00
parent 81e0c87f28
commit 9eaa364a52
1 changed files with 9 additions and 2 deletions
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11
test/hotspot/gtest/runtime/test_committed_virtualmemory.cpp
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@ -83,14 +83,21 @@ public:
ASSERT_TRUE(found_stack_top);
}
static const int PAGE_CONTAINED_IN_RANGE_TAG = -1;
static bool is_page_in_committed_region(int a) { return (a == PAGE_CONTAINED_IN_RANGE_TAG); }
static void set_page_as_contained_in_committed_region(int &a) { a = PAGE_CONTAINED_IN_RANGE_TAG; }
static void check_covered_pages(address addr, size_t size, address base, size_t touch_pages, int* page_num) {
const size_t page_sz = os::vm_page_size();
size_t index;
for (index = 0; index < touch_pages; index ++) {
if (is_page_in_committed_region(page_num[index])) { // Already tagged?
continue;
}
address page_addr = base + page_num[index] * page_sz;
// The range covers this page, marks the page
if (page_addr >= addr && page_addr < addr + size) {
page_num[index] = -1;
set_page_as_contained_in_committed_region(page_num[index]);
}
}
}
@ -135,7 +142,7 @@ public:
if (precise_tracking_supported) {
// All touched pages should be committed
for (size_t index = 0; index < touch_pages; index ++) {
ASSERT_EQ(page_num[index], -1);
ASSERT_TRUE(is_page_in_committed_region(page_num[index]));
}
}