1 files changed, 7 insertions, 0 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 36c213fbfce7..a5411b7414b1 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1571,6 +1571,9 @@ void trace_printk_init_buffers(void)
 
         pr_info("ftrace: Allocated trace_printk buffers\n");
 
+        /* Expand the buffers to set size */
+        tracing_update_buffers();
+
         buffers_allocated = 1;
 }
 
@@ -3030,6 +3033,10 @@ static int __tracing_resize_ring_buffer(unsigned long size, int cpu)
          */
         ring_buffer_expanded = 1;
 
+        /* May be called before buffers are initialized */
+        if (!global_trace.buffer)
+                return 0;
+
         ret = ring_buffer_resize(global_trace.buffer, size, cpu);
         if (ret < 0)
                 return ret;