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8372231: Test gtest/NMTGtests.java#nmt-summary crashed

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Reviewed-by: phubner, jsjolen
This commit is contained in:
Afshin Zafari 2026-02-24 09:19:11 +00:00
parent bd99c627b1
commit 92fa4f13c6
1 changed files with 1 additions and 27 deletions
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28
test/hotspot/gtest/nmt/test_nmt_buffer_overflow_detection.cpp
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2022 SAP SE. All rights reserved.
* Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2022, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -47,7 +47,6 @@
"fake message ignore this - " expected_assertion_message); \
} \
}
///////
#if !INCLUDE_ASAN
@ -86,31 +85,6 @@ DEFINE_TEST(test_overwrite_back_long_unaligned_distance, "footer canary broken")
///////
static void test_double_free() {
address p = (address) os::malloc(1, mtTest);
os::free(p);
// Now a double free. Note that this is susceptible to concurrency issues should
// a concurrent thread have done a malloc and gotten the same address after the
// first free. To decrease chance of this happening, we repeat the double free
// several times.
for (int i = 0; i < 100; i ++) {
os::free(p);
}
}
// What assertion message we will see depends on whether the VM wipes the memory-to-be-freed
// on the first free(), and whether the libc uses the freed memory to store bookkeeping information.
// If the death marker in the header is still intact after the first free, we will recognize this as
// double free; if it got wiped, we should at least see a broken header canary.
// The message would be either
// - "header canary broken" or
// - "header canary dead (double free?)".
// However, since gtest regex expressions do not support unions (a|b), I search for a reasonable
// subset here.
DEFINE_TEST(test_double_free, "header canary")
///////
static void test_invalid_block_address() {
// very low, like the result of an overflow or of accessing a null this pointer
os::free((void*)0x100);