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Currently unwinder test passes if unwinding results contain unwindme_func2 and unwindme_func1 functions. Now that unwinder reports success upon reaching task pt_regs, check that unwinding ended successfully in every test. Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>