[PATCH 4/4] ftrace: break out modify loop immediately on detection of error

[Steven Rostedt]

From: Steven Rostedt <srostedt@xxxxxxxxxx>

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@xxxxxxxxxx>
---
 kernel/trace/ftrace.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 72316d9..11ad796 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;
+				}
 			}
 		}
 	}
-- 
1.5.6.5

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