Describe the bug

While checking some GHA issues https://github.com/async-profiler/async-profiler/actions/runs/16467343342/job/46547925384?pr=1404

I noticed that sometimes async-profiler might produce impossible stacks

For example on the StackwalkerTests.largeFrame test sometimes produce the following samples on macOS

Java_test_stackwalker_StackGenerator_largeFrame;Java_test_stackwalker_StackGenerator_leafFrame 2
Java_test_stackwalker_StackGenerator_largeFrame;doCpuTask;powl 64
Java_test_stackwalker_StackGenerator_largeFrame;doCpuTask 13

The Java_test_stackwalker_StackGenerator_largeFrame;Java_test_stackwalker_StackGenerator_leafFrame should be impossible as Java_test_stackwalker_StackGenerator_leafFrame is never called from Java_test_stackwalker_StackGenerator_largeFrame

Expected vs. actual behavior

No response

Reproduction Steps

make test TESTS=StackwalkerTests.largeFrame

Additional Information/Context

No response

Async-profiler version

latest

Environment details

No response