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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2012-09-05 15:31:26 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-09-19 17:08:40 +0200 |
| commit | 1e6dd8adc78d4a153db253d051fd4ef6c49c9019 (patch) | |
| tree | 4c75760b5532ef2a7546791710f07a7eeaee5863 /arch/x86/kernel/perf_regs.c | |
| parent | d0616c1775035496fb355248d296fb16ea7fb235 (diff) | |
| download | linux-1e6dd8adc78d4a153db253d051fd4ef6c49c9019.tar.bz2 | |
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.c | 2 |
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]); |