1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 6722d86f2af5..aee11e3a394f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2006,7 +2006,11 @@ int trace_find_tgid(int pid)
 
 static int trace_save_tgid(struct task_struct *tsk)
 {
-        if (unlikely(!tgid_map || !tsk->pid || tsk->pid > PID_MAX_DEFAULT))
+        /* treat recording of idle task as a success */
+        if (!tsk->pid)
+                return 1;
+
+        if (unlikely(!tgid_map || tsk->pid > PID_MAX_DEFAULT))
                 return 0;
 
         tgid_map[tsk->pid] = tsk->tgid;