1 files changed, 8 insertions, 0 deletions

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 7f6059c5aa94..b0702ff78218 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1768,6 +1768,14 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
          * must fill the old tail_page with padding.
          */
         if (tail >= BUF_PAGE_SIZE) {
+                /*
+                 * If the page was filled, then we still need
+                 * to update the real_end. Reset it to zero
+                 * and the reader will ignore it.
+                 */
+                if (tail == BUF_PAGE_SIZE)
+                        tail_page->real_end = 0;
+
                 local_sub(length, &tail_page->write);
                 return;
         }