[PATCH] kernel: tsacct: strncpy, always be sure of NUL terminated.

[Chen Gang]

  for NUL terminated string, always set '\0' at the end.

Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
---
 kernel/tsacct.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index a1dd9a1..01bcc4e 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -78,7 +78,8 @@ void bacct_add_tsk(struct user_namespace *user_ns,
 	stats->ac_minflt = tsk->min_flt;
 	stats->ac_majflt = tsk->maj_flt;
 
-	strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm));
+	strncpy(stats->ac_comm, tsk->comm, sizeof(stats->ac_comm) - 1);
+	stats->ac_comm[sizeof(stats->ac_comm) - 1] = '\0';
 }
 
 
-- 
1.7.7.6
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