Crash in background- Sprite-Kit related - crash

Question

As the title says- my Sprite Kit game crashes every now and then in background, always with this error-
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x00000001
Triggered by Thread: 0
Thread 0 Crashed:
0 libGPUSupportMercury.dylib 0x3220193a gpus_ReturnNotPermittedKillClient + 10
1 libGPUSupportMercury.dylib 0x322023d4 gpusSubmitDataBuffers + 100
2 IMGSGX543RC2GLDriver 0x2c6211c4 SubmitPackets + 120
3 GLEngine 0x2fb3bcda gliPresentViewES + 162
4 OpenGLES 0x2fb46134 -[EAGLContext presentRenderbuffer:] + 60
5 SpriteKit 0x2ffb0060 -[SKView _renderContent] + 1216
6 libdispatch.dylib 0x381120ec _dispatch_client_callout + 20
7 libdispatch.dylib 0x381168f6 _dispatch_barrier_sync_f_invoke + 22
8 SpriteKit 0x2ffafb6e -[SKView renderContent] + 78
9 SpriteKit 0x2ffad516 __29-[SKView setUpRenderCallback]_block_invoke + 126
10 SpriteKit 0x2ffcfc84 -[SKDisplayLink _callbackForNextFrame:] + 252
11 QuartzCore 0x2fd9003e CA::Display::DisplayLinkItem::dispatch() + 94
12 QuartzCore 0x2fd8fde8 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 340
13 IOMobileFramebuffer 0x329b876a IOMobileFramebufferVsyncNotifyFunc + 102
14 IOKit 0x2e614e6a IODispatchCalloutFromCFMessage + 246
15 CoreFoundation 0x2d8f2b86 __CFMachPortPerform + 134
16 CoreFoundation 0x2d8fd77c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
17 CoreFoundation 0x2d8fd716 __CFRunLoopDoSource1 + 342
18 CoreFoundation 0x2d8fbee2 __CFRunLoopRun + 1402
19 CoreFoundation 0x2d86653c CFRunLoopRunSpecific + 520
20 CoreFoundation 0x2d86631e CFRunLoopRunInMode + 102
21 GraphicsServices 0x3259d2e6 GSEventRunModal + 134
22 UIKit 0x3011d1e0 UIApplicationMain + 1132
23 NoCar7 0x0010c186 0xf9000 + 78214
24 libdyld.dylib 0x38126ab4 start + 0
Thread 1:
0 libsystem_kernel.dylib 0x381ca838 kevent64 + 24
1 libdispatch.dylib 0x381190d0 _dispatch_mgr_invoke + 228
2 libdispatch.dylib 0x3811363e _dispatch_mgr_thread + 34
Thread 2:
0 libsystem_kernel.dylib 0x381ddc7c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x38241e06 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x38241cc0 start_wqthread + 4
Thread 3:
0 libsystem_kernel.dylib 0x381ddc7c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x38241e06 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x38241cc0 start_wqthread + 4
Thread 4:
0 libsystem_kernel.dylib 0x381ddc7c __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x38241e06 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x38241cc0 start_wqthread + 4
Thread 5:
0 libsystem_kernel.dylib 0x381caa84 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x381ca87c mach_msg + 36
2 AudioToolbox 0x2d26d99c AURemoteIO::IOThread::Run() + 184
3 AudioToolbox 0x2d271438 AURemoteIO::IOThread::Entry(void*) + 4
4 AudioToolbox 0x2d19f2ac CAPThread::Entry(CAPThread*) + 208
5 libsystem_pthread.dylib 0x38243c5a _pthread_body + 138
6 libsystem_pthread.dylib 0x38243bca _pthread_start + 98
7 libsystem_pthread.dylib 0x38241ccc thread_start + 4
Thread 0 crashed with ARM Thread State (32-bit):
r0: 0xdeadbeef r1: 0x00000001 r2: 0x1b48d000 r3: 0x00000044
r4: 0x00000000 r5: 0x04e5d560 r6: 0x04e5d438 r7: 0x27d088c0
r8: 0x00000000 r9: 0x00000fff r10: 0x04e5d000 r11: 0x04e5b90f
ip: 0x3a004114 sp: 0x27d088a0 lr: 0x322023d9 pc: 0x3220193a
cpsr: 0x20000030
What can cause it?

Answer 1

The problem can be caused by audio, if so you can check the answer here https://stackoverflow.com/a/19283721/1278463
I solved this in a game which is not using audio. Th solution is to pause SKView when entering background:
- (void)applicationDidEnterBackground:(UIApplication *)application
{
SKView *view = (SKView *)self.window.rootViewController.view;
if (view) {
view.paused = YES;
}
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
SKView *view = (SKView *)self.window.rootViewController.view;
if (view) {
view.paused = NO;
}
}

Answer 2

For me, pausing the SKView and using [[SKView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)] instead of [[SKView alloc] init] solve the issue !
[[SKView alloc] init] seems to be bugged !

Answer 3

It's most likely a bug within SpriteKit. Check out this thread for a solution: SpriteKit- the right way to multitask