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authorDan Carpenter <dan.carpenter@oracle.com>2012-09-05 15:31:26 +0300
committerIngo Molnar <mingo@kernel.org>2012-09-19 17:08:40 +0200
commit1e6dd8adc78d4a153db253d051fd4ef6c49c9019 (patch)
tree4c75760b5532ef2a7546791710f07a7eeaee5863 /arch/x86/kernel/perf_regs.c
parentd0616c1775035496fb355248d296fb16ea7fb235 (diff)
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>
Diffstat (limited to 'arch/x86/kernel/perf_regs.c')
-rw-r--r--arch/x86/kernel/perf_regs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/perf_regs.c b/arch/x86/kernel/perf_regs.c
index c5a3e5cfe07f..e309cc5c276e 100644
--- a/arch/x86/kernel/perf_regs.c
+++ b/arch/x86/kernel/perf_regs.c
@@ -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]);