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8364280: NMTCommittedVirtualMemoryTracker.test_committed_virtualmemory_region_vm fails with assertion "negative distance"

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Reviewed-by: gziemski, jsjolen
This commit is contained in:
Afshin Zafari 2025-08-12 08:03:18 +00:00
parent d78fa5a9f6
commit db12f1934a
1 changed files with 21 additions and 13 deletions
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34
test/hotspot/gtest/runtime/test_committed_virtualmemory.cpp
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@ -43,10 +43,16 @@ public:
// snapshot current stack usage
VirtualMemoryTracker::Instance::snapshot_thread_stacks();
ReservedMemoryRegion rmr_found = VirtualMemoryTracker::Instance::tree()->find_reserved_region(stack_end);
ReservedMemoryRegion rmr_found;
{
MemTracker::NmtVirtualMemoryLocker vml;
rmr_found = VirtualMemoryTracker::Instance::tree()->find_reserved_region(stack_end);
}
ASSERT_TRUE(rmr_found.is_valid());
ASSERT_EQ(rmr_found.base(), stack_end);
int i = 0;
address i_addr = (address)&i;
bool found_i_addr = false;
@ -54,18 +60,20 @@ public:
// stack grows downward
address stack_top = stack_end + stack_size;
bool found_stack_top = false;
VirtualMemoryTracker::Instance::tree()->visit_committed_regions(rmr_found, [&](const CommittedMemoryRegion& cmr) {
if (cmr.base() + cmr.size() == stack_top) {
EXPECT_TRUE(cmr.size() <= stack_size);
found_stack_top = true;
}
if(i_addr < stack_top && i_addr >= cmr.base()) {
found_i_addr = true;
}
i++;
return true;
});
{
MemTracker::NmtVirtualMemoryLocker vml;
VirtualMemoryTracker::Instance::tree()->visit_committed_regions(rmr_found, [&](const CommittedMemoryRegion& cmr) {
if (cmr.base() + cmr.size() == stack_top) {
EXPECT_TRUE(cmr.size() <= stack_size);
found_stack_top = true;
}
if (i_addr < stack_top && i_addr >= cmr.base()) {
found_i_addr = true;
}
i++;
return true;
});
}
// stack and guard pages may be contiguous as one region
ASSERT_TRUE(i >= 1);