java.lang.IllegalStateException求指导

Question

测试同学跑Monkey跑出了这个异常导致的crash，对应的Android版本是Android6.0。

补充：出问题的Activity是使用了ViewPager无限循环展示图片，内容是ImageView，不是Fragment。

但是我的应用中没有用到任何Fragment，任何commit方法。详细Log如下：

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1438)

    at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:581)

    at android.app.Activity.onBackPressed(Activity.java:2537)

    at android.app.Activity.onKeyUp(Activity.java:2511)

    at android.view.KeyEvent.dispatch(KeyEvent.java:2695)

    at android.app.Activity.dispatchKeyEvent(Activity.java:2764)

    at com.android.internal.policy.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:2384)

    at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:4687)

    at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4643)

    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4155)

    at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4208)

    at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4174)

    at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4320)

    at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4182)

    at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4377)

    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4155)

    at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4208)

    at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4174)

    at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4182)

    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4155)

    at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4208)

在StackOverFlow上搜到了类似的问题：http://stackoverflow.com/ques...

StackOverFlow上说要重写onSaveInstaceState方法，去掉super调用，但是我不清楚这样做是否存在负作用，所以希望有经验的人指导一下如何解决这个问题