ftrace: break out modify loop immediately on detection of error

Impact: added precaution on failure detection

Break out of the modifying loop as soon as a failure is detected.
This is just an added precaution found by code review and was not
found by any bug chasing.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 72316d9647bd..11ad796ca049 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -561,8 +561,11 @@ static void ftrace_replace_code(int enable)
                                 if ((system_state == SYSTEM_BOOTING) ||
                                     !core_kernel_text(rec->ip)) {
                                         ftrace_free_rec(rec);
-                                } else
+                                } else {
                                         ftrace_bug(failed, rec->ip);
+                                        /* Stop processing */
+                                        return;
+                                }
                         }
                 }
         }