This crash first appeared in 13.a1/20120209 and has been hit by 4 users. More reports at: https://crash-stats.mozilla.com/report/list?signature=java.lang.NullPointerException%3A%20at%20android.widget.CursorTreeAdapter.setChildrenCursor%28CursorTreeAdapter.java%29

This sounds like it may be a regression from bug 716918, but other patches have landed touching that code since then. Is there a way to get a java stack?

"java.lang.NullPointerException at android.widget.CursorTreeAdapter.setChildrenCursor(CursorTreeAdapter.java:165) at org.mozilla.gecko.AwesomeBarTabs$RefreshChildrenCursorTask.onPostExecute(AwesomeBarTabs.java:224) at org.mozilla.gecko.AwesomeBarTabs$RefreshChildrenCursorTask.onPostExecute(AwesomeBarTabs.java:203) at android.os.AsyncTask.finish(AsyncTask.java:417) at android.os.AsyncTask.access$300(AsyncTask.java:127) at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:130) at org.mozilla.gecko.GeckoApp$32.run(GeckoApp.java:1783) at android.os.Handler.handleCallback(Handler.java:587) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:130) at android.app.ActivityThread.main(ActivityThread.java:3728) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:507) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622) at dalvik.system.NativeStart.main(Native Method)

Lucas, is it possible that childrenCursor can be null here? http://mxr.mozilla.org/mozilla-central/source/mobile/android/base/AwesomeBarTabs.java#224

It's #3 top crasher in 13.0a1 and #1 without fixed crashers. The regression range is: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=4b9608fd670c&tochange=7c0ba1c98ff7 bug 716918 belongs to this range. Let's mark this bug as a regression from it.

(In reply to Margaret Leibovic [:margaret] from comment #3) > Lucas, is it possible that childrenCursor can be null here? > > http://mxr.mozilla.org/mozilla-central/source/mobile/android/base/ > AwesomeBarTabs.java#224 Nope. The only reason childrenCursor would be null here is when getDesktopBookmarks() returns null. Maybe double check for edge cases on the query itself?

This crash will go away when bug 722020 lands, since we won't be using a CursorTreeAdapter anymore. Hopefully we can finish that soon.

I'm marking this as FIXED, since this code is gone now that bug 722020 landed.