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-rw-r--r--kernel/trace/trace.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 7446d4238f87..991bab9b79d2 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7046,6 +7046,12 @@ __init static int tracer_alloc_buffers(void)
int ring_buf_size;
int ret = -ENOMEM;
+ /*
+ * Make sure we don't accidently add more trace options
+ * than we have bits for.
+ */
+ BUILD_BUG_ON(TRACE_ITER_LAST_BIT > 32);
+
if (!alloc_cpumask_var(&tracing_buffer_mask, GFP_KERNEL))
goto out;