Bug 40963

Summary:	iOS app crashes when taking snapshots
Product:	iOS	Reporter:	Rodrigo Moya <rodrigo.moya>
Component:	Mono runtime / AOT compiler	Assignee:	Alex Rønne Petersen <alexrp>
Status:	VERIFIED FIXED
Severity:	critical	CC:	asimk, kumpera, kyle.white, luis.aguilera, mono-bugs+mono, mono-bugs+monotouch, mono-bugs+runtime, saurabhd, sebastien, vargaz
Priority:	Highest
Version:	XI 9.10 (C8)
Target Milestone:	10.0.0 (C8)
Hardware:	PC
OS:	Mac OS
Tags:	C8Beta1	Is this bug a regression?:	Yes
Last known good build:

Description Rodrigo Moya 2016-05-09 11:38:21 UTC

After updating to alpha channel (C8), can no longer take snapshots on iOS, all apps I've tried crash when doing so:

May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
		/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x79e01b10 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)
May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
		/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x79e01b10 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)
May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Error loading /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib:  dlopen(/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib, 262): no suitable image found.  Did find:
		/System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin/Contents/MacOS/IOHIDLib: mach-o, but not built for iOS simulator
May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Cannot find function pointer IOHIDLibFactory for factory 13AA9C44-6F1B-11D4-907C-0005028F18D5 in CFBundle/CFPlugIn 0x79e01b10 </System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDLib.plugin> (bundle, not loaded)
May  9 13:29:30 cogulla assertiond[2044]: assertion failed: 15E65 13E230: assertiond + 15801 [3C808658-78EC-3950-A264-79A64E0E463B]: 0x1
May  9 13:29:30 --- last message repeated 3 times ---
May  9 13:29:30 cogulla AcquaintXFormsiOS[2092]: Style Iddisclosure
May  9 13:29:32 --- last message repeated 7 times ---
May  9 13:29:32 cogulla assertiond[2044]: assertion failed: 15E65 13E230: assertiond + 15801 [3C808658-78EC-3950-A264-79A64E0E463B]: 0x1
May  9 13:29:32 cogulla AcquaintXFormsiOS[2092]: Style Iddisclosure
May  9 13:29:34 cogulla assertiond[2044]: assertion failed: 15E65 13E230: assertiond + 15801 [3C808658-78EC-3950-A264-79A64E0E463B]: 0x1
May  9 13:29:37 --- last message repeated 1 time ---
May  9 13:29:37 cogulla SpringBoard[2040]: Weekly asset update check did fire (force=NO)
May  9 13:29:37 cogulla SpringBoard[2040]: Beginning check for asset updates (force: 0
May  9 13:29:37 cogulla SpringBoard[2040]: Did not complete check for asset updates (force: 0, isVoiceOverRunning: 0
May  9 13:29:41 cogulla assertiond[2044]: assertion failed: 15E65 13E230: assertiond + 15801 [3C808658-78EC-3950-A264-79A64E0E463B]: 0x1
May  9 13:29:43 --- last message repeated 5 times ---
May  9 13:29:43 cogulla backboardd[2041]: CoreAnimation: updates deferred for too long
May  9 13:29:44 cogulla assertiond[2044]: assertion failed: 15E65 13E230: assertiond + 15801 [3C808658-78EC-3950-A264-79A64E0E463B]: 0x1
May  9 13:29:51 --- last message repeated 5 times ---
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 
	Native stacktrace:
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	0   AcquaintXFormsiOS                   0x0016d96d mono_handle_native_sigsegv + 317
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	1   AcquaintXFormsiOS                   0x0017b126 mono_sigsegv_signal_handler + 214
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	2   libsystem_platform.dylib            0x0978879b _sigtramp + 43
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	3   ???                                 0xffffffff 0x0 + 4294967295
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	4   AcquaintXFormsiOS                   0x001e243e mono_object_register_finalizer + 46
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	5   AcquaintXFormsiOS                   0x00247475 mono_object_new_mature + 117
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	6   AcquaintXFormsiOS                   0x0028ed88 create_internal_thread + 72
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	7   AcquaintXFormsiOS                   0x0028f306 mono_thread_attach_full + 118
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	8   AcquaintXFormsiOS                   0x0028f272 mono_thread_attach + 34
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	9   AcquaintXFormsiOS                   0x00012ab7 helper_thread + 1031
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	10  libsystem_pthread.dylib             0x09775780 _pthread_body + 138
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	11  libsystem_pthread.dylib             0x097756f6 _pthread_body + 0
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 	12  libsystem_pthread.dylib             0x09772f7a thread_start + 34
May  9 13:29:51 cogulla AcquaintXFormsiOS[2092]: critical: 
	=================================================================
	Got a SIGSEGV while executing native code. This usually indicates
	a fatal error in the mono runtime or one of the native libraries 
	used by your application.
	=================================================================
May  9 13:29:51 cogulla SpringBoard[2040]: HW kbd: Failed to set (null) as keyboard focus
May  9 13:29:51 cogulla com.apple.CoreSimulator.SimDevice.E1ED1960-E6EE-4974-8145-8C01530C48F1.launchd_sim[2024] (UIKitApplication:com.xamarin.acquaint-forms[0x1a13][2092]): Service exited due to signal: Abort trap: 6
May  9 13:29:51 cogulla SpringBoard[2040]: Application 'UIKitApplication:com.xamarin.acquaint-forms[0x1a13]' crashed.

Setup:

=== Xamarin Studio Business ===

Version 6.1 (build 817)
Installation UUID: 0a9ae72a-48a9-4853-ab6a-fe231f5fca0b
Runtime:
	Mono 4.4.0 (mono-4.4.0-branch/fcf7a6d) (64-bit)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 404000148

=== NuGet ===

Version: 3.3.0.0

=== Xamarin.Profiler ===

Version: 0.33.1
Location: /Users/rodrigo/Projects/xamarin/profiler/src/XamarinProfiler.Mac/bin/Debug/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Xamarin.Android ===

Version: 6.1.0.40 (Xamarin Business)
Android SDK: /Users/rodrigo/Library/Developer/Xamarin/android-sdk-mac_x86
	Supported Android versions:
		5.0 (API level 21)
		5.1 (API level 22)
		6.0 (API level 23)

SDK Tools Version: 25.1.3
SDK Platform Tools Version: 23.1
SDK Build Tools Version: 23.0.3

Java SDK: /usr
java version "1.7.0_71"
Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

=== Xamarin Android Player ===

Version: 0.6.5
Location: /Applications/Xamarin Android Player.app

=== Apple Developer Tools ===

Xcode 7.3.1 (10188.1)
Build 7D1014

=== Xamarin.Mac ===

Version: 2.9.0.719 (Xamarin Business)

=== Xamarin.iOS ===

Version: 9.9.0.719 (Xamarin Business)
Hash: 3afb4af
Branch: master
Build date: 2016-04-24 15:13:41-0400

=== Build Information ===

Release ID: 601000817
Git revision: 2335763551f9db8296b08542035977b899b7f3b7
Build date: 2016-04-25 10:45:36-04
Xamarin addins: 7f8c9ab2a981143a87fbd5adbde3f5890a838fde
Build lane: monodevelop-lion-cycle8-preview

=== Operating System ===

Mac OS X 10.11.4
Darwin cogulla.local 15.4.0 Darwin Kernel Version 15.4.0
    Fri Feb 26 22:08:05 PST 2016
    root:xnu-3248.40.184~3/RELEASE_X86_64 x86_64

Comment 1 Rodrigo Moya 2016-05-18 17:15:28 UTC

*** Bug 41106 has been marked as a duplicate of this bug. ***

Comment 2 Sebastien Pouliot 2016-08-16 14:08:13 UTC

That's a critical bug that was not commented in over a month ? @Alex ? @Kumpera ?

Comment 3 Alex Rønne Petersen 2016-08-30 04:58:04 UTC

This is the fix: https://github.com/mono/mono/pull/3466

Should make it into C8 if all goes to plan.

Comment 4 Alex Rønne Petersen 2016-09-01 14:12:03 UTC

Fix is in C8.

Comment 5 Saurabh 2016-09-05 07:03:20 UTC

I have checked this Issue with latest builds (XI 9.99.5.106 + XS 6.1.0.5398) I am not seeing any crash after clicking on snapshot icon in application as well as from profiler.

Environment Info and logs: https://gist.github.com/saurabh360/f3b1a00b5cd03a2fce1e01403bb39b5f
Profiler Log: https://gist.github.com/saurabh360/a47d0b40f7bcdacb782082223a313142