iOS18 and iOS16.5.0 pushViewController crashed,But it looks like UIFont crashed,Can someone analyze that?

Question

Created Jul ’24

Replies 2

Boosts 0

Participants 3

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Subtype: KERN_PROTECTION_FAILURE at 0x0000000205fc4a04
Exception Codes: 0x0000000000000002, 0x0000000205fc4a04
VM Region Info: 0x205fc4a04 is in 0x205fb2cd0-0x205ff9d60;  bytes after start: 73012  bytes before end: 217947
      REGION TYPE                 START - END      [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      __DATA_CONST             205fad9c0-205fb2cd0 [   21K] r--/rw- SM=COW  .../DMCUtilities
--->  unused __TEXT            205fb2cd0-205ff9d60 [  284K] r--/rw- SM=COW  ...ed lib __TEXT
      __DATA_CONST             205ff9d60-2060070a0 [   53K] r--/rw- SM=COW  ...lCoordination
Termination Reason: SIGNAL 10 Bus error: 10
Terminating Process: exc handler [1039]

Triggered by Thread:  0



Thread 0 Crashed:
0   ???                           	0x0000000205fc4a04 0x0 + 8690354692
1   libsystem_pthread.dylib       	0x000000021608c2fc __pthread_once_handler + 76 (pthread.c:1924)
2   libsystem_platform.dylib      	0x0000000215ff2940 _os_once_callout + 32 (lock.c:1180)
3   libsystem_pthread.dylib       	0x0000000216088f68 pthread_once + 100 (pthread.c:1934)
4   libFontParser.dylib           	0x00000001ddd59648 TFont::CreateFontEntitiesForFile(char const*, timespec, bool, short, char const*) + 96 (Font.cpp:814)
5   libFontParser.dylib           	0x00000001ddce0908 FPFontCreateFontsWithPath + 252 (FontParser.cpp:2601)
6   CoreGraphics                  	0x00000001b7df77f8 create_private_data_array_with_path + 20 (xt-vtable.c:109)
7   CoreGraphics                  	0x00000001b7dd0f30 CGFontCreateFontsWithPath + 40 (CGFontCreate.c:501)
8   CoreGraphics                  	0x00000001b7da76c0 CGFontCreateFontsWithURL + 672 (CGFontURL.c:315)
9   libGSFont.dylib               	0x00000001d001e0b8 AddFontsFromURLOrPath + 240 (GSFont.m:996)
10  libGSFont.dylib               	0x00000001d0018d1c __Initialize_block_invoke + 1404 (GSFont.m:1478)
11  libdispatch.dylib             	0x00000001bd7a2eac _dispatch_client_callout + 20 (object.m:560)
12  libdispatch.dylib             	0x00000001bd7a46ec _dispatch_once_callout + 32 (once.c:52)
13  libGSFont.dylib               	0x00000001d0019080 Initialize + 212 (GSFont.m:1352)
14  libdispatch.dylib             	0x00000001bd7a2eac _dispatch_client_callout + 20 (object.m:560)
15  libdispatch.dylib             	0x00000001bd7a46ec _dispatch_once_callout + 32 (once.c:52)
16  libdispatch.dylib             	0x00000001bd7a2eac _dispatch_client_callout + 20 (object.m:560)
17  libdispatch.dylib             	0x00000001bd7a46ec _dispatch_once_callout + 32 (once.c:52)
18  CoreText                      	0x00000001b7b803c4 TDescriptorSource::TDescriptorSource() + 196 (TDescriptorSource.cpp:150)
19  CoreText                      	0x00000001b7b8e524 CTFontDescriptorCreateForUIType + 48 (CTFontDescriptor.cpp:571)
20  CoreText                      	0x00000001b7b8e240 CTFontCreateUIFontForLanguage + 20 (CTFont.cpp:181)
21  UIFoundation                  	0x00000001c06bdbc0 UINewFont + 840 (UIFont.m:247)
22  UIFoundation                  	0x00000001c06bd474 +[UIFont systemFontOfSize:traits:] + 44 (UIFont.m:1020)
23  UIKitCore                     	0x00000001b863265c -[_UITextAttributeDefaultCategories _genericDefaults:] + 96 (_UITextAttributeDefaults.m:98)
24  UIKitCore                     	0x00000001b8632534 -[_UITextAttributeDefaultCategories initWithUserInterfaceIdiom:] + 208 (_UITextAttributeDefaults.m:80)
25  UIKitCore                     	0x00000001b8632440 __48+[_UITextAttributeDefaults _unspecifiedDefaults]_block_invoke + 32 (_UITextAttributeDefaults.m:192)
26  libdispatch.dylib             	0x00000001bd7a2eac _dispatch_client_callout + 20 (object.m:560)
27  libdispatch.dylib             	0x00000001bd7a46ec _dispatch_once_callout + 32 (once.c:52)
28  UIKitCore                     	0x00000001b83b2044 +[_UITextAttributeDefaults _unspecifiedDefaults] + 80 (_UITextAttributeDefaults.m:191)
29  UIKitCore                     	0x00000001b83b1f3c +[UILabel defaultFont] + 88 (UILabel.m:660)
30  UIKitCore                     	0x00000001b849a020 __22-[UILabel _commonInit]_block_invoke_2 + 44 (UILabel.m:1349)
31  UIKitCore                     	0x00000001b83d45b0 +[UIView _performSystemAppearanceModifications:] + 72 (UIView.m:3759)
32  UIKitCore                     	0x00000001b83d4060 -[UILabel _commonInit] + 352 (UILabel.m:1359)
33  UIKitCore                     	0x00000001b83d3e18 -[UILabel initWithFrame:] + 56 (UILabel.m:1433)
34  UIKitCore                     	0x00000001b8521570 _UINavigationBarLargeTitleViewNewLabel + 28 (_UINavigationBarLargeTitleViewLayout.m:29)
35  UIKitCore                     	0x00000001b85bc7ec -[_UINavigationBarLargeTitleViewLayout initWithContentView:] + 76 (_UINavigationBarLargeTitleViewLayout.m:55)
36  UIKitCore                     	0x00000001b84869a0 -[_UINavigationBarLargeTitleView initWithFrame:] + 64 (_UINavigationBarLargeTitleView.m:61)
37  UIKitCore                     	0x00000001b8485fc4 -[_UINavigationBarVisualProviderModernIOS prepare] + 604 (_UINavigationBarVisualProviderModernIOS.m:246)
38  UIKitCore                     	0x00000001b8485ccc -[UINavigationBar _commonNavBarInit] + 188 (UINavigationBar.m:1444)
39  UIKitCore                     	0x00000001b84859a8 -[UINavigationBar initWithFrame:] + 160 (UINavigationBar.m:1495)
40  UIKitCore                     	0x00000001b835ab70 -[UINavigationController _navigationBarHiddenByDefault:] + 80 (UINavigationController.m:2513)
41  UIKitCore                     	0x00000001b835d014 -[UINavigationController loadView] + 168 (UINavigationController.m:4252)
42  UIKitCore                     	0x00000001b835c6a8 -[UIViewController loadViewIfRequired] + 100 (UIViewController.m:4235)
43  UIKitCore                     	0x00000001b835c624 -[UIViewController view] + 24 (UIViewController.m:4299)
44  UIKitCore                     	0x00000001b84f3524 -[UINavigationController pushViewController:transition:forceImmediate:] + 404 (UINavigationController.m:8388)
45  UIKitCore                     	0x00000001b84f335c -[UINavigationController pushViewController:animated:] + 628 
46  DUMovie                     	0x0000000104e19058 -[DUNavigationController pushViewController:animated:] + 1212 (DUNavigationController:324)
47  UIKitCore                     	0x00000001b84e41a0 -[UINavigationController initWithRootViewController:] + 152 (UINavigationController.m:609)

(UINavigationController.m:8304)

Boost

Answer 1

DTS Engineer OP

Apple

Jul ’24

Could you please share the steps you've taken to identify where in your code the crash occurred?

Have you tried:

Adding exception breakpoints to your app to pinpoint where exceptions are raised, making it easier to identify execution errors? See About the Breakpoint Navigator” in “Breakpoint Navigator Help
Symbolicating your crash logs to understand the exact line of code that caused the crash? see Technical Note TN2151 Understanding and Analyzing iOS Application Crash Reports

If you've done the above and still cannot determine the source of the crash, you can provide the symbolicated crash logs in a bug report via Feedback Assistant and share the Feedback number here. I would be happy to take a look at the symbolicated crash logs.

0

Answer 2

lijackh OP

Jul ’24

A seemingly certain crash of UIfont on ios18

Exception Subtype: KERN_INVALID_ADDRESS at 0x00005ddde5f28270
Exception Codes: 0x0000000000000001, 0x00005ddde5f28270
VM Region Info: 0x5ddde5f28270 is not in any region.  Bytes after previous region: 102726590694001  
      REGION TYPE                 START - END      [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      commpage (reserved)     1000000000-7000000000 [384.0G] ---/--- SM=NUL  reserved VM address space (unallocated)
--->  
      UNUSED SPACE AT END
Termination Reason: SIGNAL 11 Segmentation fault: 11
Terminating Process: exc handler [4297]

Triggered by Thread:  0


Thread 0 name:
Thread 0 Crashed:
0   libobjc.A.dylib               	0x00000001846cb008 objc_msgSend + 8 (:-1)
1   CoreFoundation                	0x00000001872f64bc -[__NSDictionaryM objectForKey:] + 168 (NSDictionaryM.m:179)
2   CoreFoundation                	0x000000018734c3e8 -[NSDictionary containsKey:] + 56 (NSDictionary.m:80)
3   CoreFoundation                	0x000000018734c06c CFDictionaryContainsKey + 52 (CFDictionary.c:265)
4   libGSFont.dylib               	0x00000001a5decc14 GSFontIsOverriddenSystemFontName + 32 (GSFont.m:2860)
5   CoreText                      	0x00000001891bb1fc CopyAttributeForSystemFont(__CFString const*, __CFString const*) + 64 (MetadataSupport.cpp:194)
6   CoreText                      	0x00000001891badd4 AddVariationInfo(TCFMutableDictionary&, __CFString const*) + 60 (SplicedFontSupport.cpp:6760)
7   CoreText                      	0x000000018922dea0 MakeSpliceDescriptor(__CFString const*, unsigned long, __CFString const*, __CFString const*, __CFNumber const*, __CFNumber const*, unsigned int, CTFontTextStylePlatform, unsigned int, __CFNumber co... + 4504 (SplicedFontSupport.cpp:7429)
8   CoreText                      	0x0000000189229374 TDescriptorSource::CopySpliceFontForName(__CFString const*, __CFString const*, __CFNumber const*, __CFNumber const*, CTFontLegibilityWeight, __CFBoolean const*, __CFNumber const*, __CFString const*... + 1376 (TDescriptorSource.cpp:4288)
9   CoreText                      	0x0000000189226800 TDescriptorSource::CopySplicedDescriptorForName(__CFString const*, __CFString const*, __CFString const*, __CFNumber const*, __CFNumber const*, CTFontLegibilityWeight, __CFBoolean const*, __CFNumber... + 172 (TDescriptorSource.cpp:4322)
10  CoreText                      	0x0000000189156214 TDescriptor::CreateMatchingDescriptorInternal(__CFSet const*, unsigned long) const + 2332 (TDescriptor.cpp:804)
11  CoreText                      	0x0000000189155148 TDescriptor::InitBaseFont(unsigned long, double) + 76 (TDescriptor.cpp:952)
12  CoreText                      	0x0000000189177d24 TDescriptor::CreateMatchingDescriptor(__CFSet const*, double, unsigned long) const + 448 (TDescriptor.cpp:927)
13  CoreText                      	0x0000000189177af8 CTFontCreateWithFontDescriptor + 68 (CTFont.cpp:142)
14  CoreText                      	0x00000001891b5dc4 CTFontCreateUIFontForLanguage + 44 (CTFont.cpp:210)
15  UIFoundation                  	0x0000000192b5635c UINewFont + 828 (UIFont.m:247)
16  UIFoundation                  	0x0000000192b55330 +[UIFont systemFontOfSize:traits:] + 44 (UIFont.m:1035)
17  UIKitCore                     	0x0000000189d2a76c -[_UITextAttributeDefaultCategories _genericDefaults:] + 112 (_UITextAttributeDefaults.m:98)
18  UIKitCore                     	0x0000000189d2a3d4 -[_UITextAttributeDefaultCategories initWithUserInterfaceIdiom:] + 208 (_UITextAttributeDefaults.m:80)
19  UIKitCore                     	0x0000000189d2a2e0 __48+[_UITextAttributeDefaults _unspecifiedDefaults]_block_invoke + 32 (_UITextAttributeDefaults.m:192)
20  libdispatch.dylib             	0x000000018f1f1160 _dispatch_client_callout + 20 (object.m:576)
21  libdispatch.dylib             	0x000000018f1f29a8 _dispatch_once_callout + 32 (once.c:52)
22  UIKitCore                     	0x0000000189b23ae0 +[_UITextAttributeDefaults _unspecifiedDefaults] + 80 (_UITextAttributeDefaults.m:191)
23  UIKitCore                     	0x0000000189c8aae8 -[_UICascadingTextStorage _setDefaults:] + 56 (_UICascadingTextStorage.m:51)
24  UIKitCore                     	0x0000000189c8aa98 -[_UICascadingTextStorage initWithDefaults:] + 80 (_UICascadingTextStorage.m:43)
25  UIKitCore                     	0x0000000189c8a74c -[UITextField _initTextStorage] + 36 (UITextField.m:8777)
26  UIKitCore                     	0x0000000189c89a94 -[UITextField _initWithFrame:textLayoutManagerEnabled:] + 312 (UITextField.m:666)
27  XxxxxxXXX                      	0x000000010560c20c __25-[IQKeyboardManager init]_block_invoke_2 + 28 (IQKeyboardManager.m:247)
28  libdispatch.dylib             	0x000000018f1ef400 _dispatch_call_block_and_release + 32 (init.c:1549)
29  libdispatch.dylib             	0x000000018f1f1160 _dispatch_client_callout + 20 (object.m:576)
30  libdispatch.dylib             	0x000000018f1ffa70 _dispatch_main_queue_drain + 980 (queue.c:8085)
31  libdispatch.dylib             	0x000000018f1ff68c _dispatch_main_queue_callback_4CF + 44 (queue.c:8245)
32  CoreFoundation                	0x0000000187349168 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16 (CFRunLoop.c:1775)
33  CoreFoundation                	0x0000000187346388 __CFRunLoopRun + 2012 (CFRunLoop.c:3144)
34  CoreFoundation                	0x0000000187345714 CFRunLoopRunSpecific + 608 (CFRunLoop.c:3415)
35  GraphicsServices              	0x00000001d2e411c4 GSEventRunModal + 164 (GSEvent.c:2196)
36  UIKitCore                     	0x0000000189eb9564 -[UIApplication _run] + 888 (UIApplication.m:3809)
37  UIKitCore                     	0x0000000189f67530 UIApplicationMain + 340 (UIApplication.m:5409)
38  XxxxxxXXX                      	0x00000001055b7ea8 main + 84 (main.m:67)
39  dyld                          	0x00000001aceefcd0 start + 2760 (dyldMain.cpp:1335)

0