diff options
| -rw-r--r-- | kernel/hung_task.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/hung_task.c b/kernel/hung_task.c index 0c924de58cb2..022a4927b785 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -72,7 +72,13 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) { unsigned long switch_count = t->nvcsw + t->nivcsw; - if (t->flags & PF_FROZEN) + /* + * Ensure the task is not frozen. + * Also, when a freshly created task is scheduled once, changes + * its state to TASK_UNINTERRUPTIBLE without having ever been + * switched out once, it musn't be checked. + */ + if (unlikely(t->flags & PF_FROZEN || !switch_count)) return; if (switch_count != t->last_switch_count) { |