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[Asan] Ensure minimum stack size 128KB in ThreadedStressStackReuseTest #165198

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[Asan] Ensure minimum stack size 128KB in ThreadedStressStackReuseTest #165198

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[Asan] Ensure minimum stack size 128KB in ThreadedStressStackReuseTest
riyazahmad86 Oct 24, 2025
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clang-format modification
riyazahmad86 Oct 28, 2025
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Merge branch 'main' into asan_thread_stress_test
riyaz86a Oct 28, 2025
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riyazahmad86 Nov 11, 2025
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Merge branch 'main' into asan_thread_stress_test
riyaz86a Nov 11, 2025
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15 changes: 14 additions & 1 deletion compiler-rt/lib/asan/tests/asan_test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1115,15 +1115,28 @@ TEST(AddressSanitizer, StressStackReuseTest) {
LotsOfStackReuse();
}

// On some platform (ex: AIX), the default thread stack size (~96 KB) is
// insufficient for this test and can lead to stack overflows.
#define MIN_STACK_SIZE (128 * 1024) // 128 KB
TEST(AddressSanitizer, ThreadedStressStackReuseTest) {
const int kNumThreads = 20;
pthread_t t[kNumThreads];
size_t curStackSize = 0;
pthread_attr_t attr;
pthread_attr_init(&attr);
// Get the current (default) thread stack size
pthread_attr_getstacksize(&attr, &curStackSize);
if (curStackSize < MIN_STACK_SIZE) {
int rc = pthread_attr_setstacksize(&attr, MIN_STACK_SIZE);
ASSERT_EQ(0, rc);
}
for (int i = 0; i < kNumThreads; i++) {
PTHREAD_CREATE(&t[i], 0, (void* (*)(void *x))LotsOfStackReuse, 0);
PTHREAD_CREATE(&t[i], &attr, (void* (*)(void* x))LotsOfStackReuse, 0);
}
for (int i = 0; i < kNumThreads; i++) {
PTHREAD_JOIN(t[i], 0);
}
pthread_attr_destroy(&attr);
}

// pthread_exit tries to perform unwinding stuff that leads to dlopen'ing
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