oprofile/x86: fix crash when profiling more than 28 events

With multiplexing enabled oprofile crashs when profiling more than 28
events. This patch fixes this.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>

diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index cb88b1a..76d4f56 100644 (file)
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -222,7 +222,7 @@ static void nmi_cpu_switch(void *dummy)
 
        /* move to next set */
        si += model->num_counters;
-       if ((si > model->num_virt_counters) || (counter_config[si].count == 0))
+       if ((si >= model->num_virt_counters) || (counter_config[si].count == 0))
                per_cpu(switch_index, cpu) = 0;
        else
                per_cpu(switch_index, cpu) = si;