Commit 1e6dd8ad authored Sep 05, 2012 by Dan Carpenter Committed by Ingo Molnar Sep 19, 2012

perf: Fix off by one test in perf_reg_value()



The test should be >= ARRAY_SIZE() instead of > ARRAY_SIZE().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/20120905123126.GC6128@elgon.mountain


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent d0616c17

arch/x86/kernel/perf_regs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -57,7 +57,7 @@ static unsigned int pt_regs_offset[PERF_REG_X86_MAX] = {

		u64 perf_reg_value(struct pt_regs *regs, int idx)
		{
		if (WARN_ON_ONCE(idx > ARRAY_SIZE(pt_regs_offset)))
		if (WARN_ON_ONCE(idx >= ARRAY_SIZE(pt_regs_offset)))
		return 0;

		return regs_get_register(regs, pt_regs_offset[idx]);