Commit c906d2c7 authored May 12, 2018 by Nicholas Piggin Committed by Michael Ellerman May 14, 2018

selftests/powerpc: fix exec benchmark



The exec_target binary could segfault calling _exit(2) because r13
is not set up properly (and libc looks at that when performing a
syscall). Call SYS_exit using syscall(2) which doesn't seem to
have this problem.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 7ef73cd3

tools/testing/selftests/powerpc/benchmarks/exec_target.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -6,8 +6,11 @@
		* Copyright 2018, Anton Blanchard, IBM Corp.
		*/

		void _exit(int);
		#define _GNU_SOURCE
		#include <unistd.h>
		#include <sys/syscall.h>

		void _start(void)
		{
		_exit(0);
		syscall(SYS_exit, 0);
		}

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