Scoobidiver (away) Reporter
	Description • 12 years ago

It might be related to bug 850845 because hit by the same user in the same build.

Here is a crash report: bp-354bf58f-281e-4b83-af54-77f2f2130315.

Frame 	Module 	Signature 	Source
0 	libxul.so 	android::GonkCameraHardware::StartPreview 	GonkCameraHwMgr.cpp:289
1 	libxul.so 	mozilla::nsGonkCameraControl::StartPreviewImpl 	GonkCameraControl.cpp:649
2 	libxul.so 	mozilla::StartPreviewTask::Run 	CameraControlImpl.h:533
3 	libxul.so 	nsThread::ProcessNextEvent 	nsThread.cpp:620
4 	libxul.so 	NS_ProcessNextEvent_P 	nsThreadUtils.cpp:237
5 	libxul.so 	nsThread::ThreadFunc 	nsThread.cpp:258
6 	libnspr4.so 	_pt_root 	ptthread.c:191
7 	libc.so 	__thread_entry 	pthread.c:217
8 	libc.so 	pthread_create 	pthread.c:357 

More reports at:
https://crash-stats.mozilla.com/report/list?signature=android%3A%3AGonkCameraHardware%3A%3AStartPreview

	Michael Vines [:m1] [:evilmachines]
	Comment 1 • 12 years ago

So I see that this is from build ID 20130314114915.  Unfortunately this ID contains no information about what FFOS branch it is from.  How does one obtain this information usually?  It would be so nice if the moz build IDs (err..timestamps) were prefixed by a version.

tef- because I have no way to determine if this is from v1.0.1

	Michael Vines [:m1] [:evilmachines]
	Comment 2 • 12 years ago

And of course the version field for both v1.0.1 and v1.1 report "18.0".  

Does changing the version for v1.1 to 18.1 cause trouble?

	Mike Habicher [:mikeh] (high bugzilla latency)
	Comment 3 • 12 years ago

By code inspection, the only way this is possible is if GonkCameraHardware::Close() is called before GonkCameraHardware::StartPreview(); otherwise GonkCameraControl::mCameraHw will be set to nullptr in GonkCameraControl::Init(), and RETURN_IF_NO_CAMERA_HW() will catch the uninitialized case on GonkCameraControl.cpp line 663.

This bug was introduced by bug 803471, and does not affect v1.0.1.

	Naoki Hirata :nhirata (please use needinfo instead of cc)
	Comment 4 • 12 years ago

I only see this crash in friday's build 2013031411.  I think some people were playing with lockscreen and camera that day.  there were some people saying that camera from lockscreen would cause hanging.

	Mike Habicher [:mikeh] (high bugzilla latency)
	Comment 5 • 12 years ago

Yes, and that crash was specifically addressed in bug 850845.

I haven't been able to reproduce it since.  If you agree, I think we can make this as a duplicate.

	Mike Habicher [:mikeh] (high bugzilla latency)
	Comment 6 • 12 years ago

*mark

	Mike Habicher [:mikeh] (high bugzilla latency)
	Comment 7 • 11 years ago

Two months idle; making as dupe.