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-rw-r--r--kernel/trace/trace_printk.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c
index 6fd4ffd042f..a9077c1b4ad 100644
--- a/kernel/trace/trace_printk.c
+++ b/kernel/trace/trace_printk.c
@@ -51,6 +51,10 @@ void hold_module_trace_bprintk_format(const char **start, const char **end)
const char **iter;
char *fmt;
+ /* allocate the trace_printk per cpu buffers */
+ if (start != end)
+ trace_printk_init_buffers();
+
mutex_lock(&btrace_mutex);
for (iter = start; iter < end; iter++) {
struct trace_bprintk_fmt *tb_fmt = lookup_format(*iter);