Signed-off-by: liguang <lig.f...@cn.fujitsu.com>
---
 kernel/task_work.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/task_work.c b/kernel/task_work.c
index 0bf4258..f458b08 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -75,7 +75,8 @@ void task_work_run(void)
 
                do {
                        next = work->next;
-                       work->func(work);
+                       if (unlikely(work->func))
+                               work->func(work);
                        work = next;
                        cond_resched();
                } while (work);
-- 
1.7.2.5

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