[PATCH] kernel/trace/trace_functions_graph.c: fix nsecs_str buffer size

[Daniel Mack]

In kernel/trace/trace_functions_graph.c, print_graph_duration(), len can
be as low as 1 or 2, which could make snprintf() write beyond the
buffer bounds. (Found by cppcheck, no real-world bug occured)

Signed-off-by: Daniel Mack <daniel@xxxxxxxx>
---
 kernel/trace/trace_functions_graph.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 930c08e..7533b25 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -281,7 +281,7 @@ print_graph_duration(unsigned long long duration, struct trace_seq *s)
 	unsigned long nsecs_rem = do_div(duration, 1000);
 	/* log10(ULONG_MAX) + '\0' */
 	char msecs_str[21];
-	char nsecs_str[5];
+	char nsecs_str[8];
 	int ret, len;
 	int i;
 
-- 
1.6.2

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