Application Hangs on a user's side. Spindupm does not contain any code related to mine(Apple frameworks only)

Question

Created Feb ’21

Replies 1

Boosts 0

Views 1.7k

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Can you please give any advice on what to do next?
I saw that the app hangs on a remote session. But I don't know what process hangs the app.
I do realize that the proper way is to move everything except drawing to the BG queues. But I have a lot of legacy code. And my boss definitely isn't going to pay for overriding the whole app. And even then I can't guaranty the problem be solved.

Spindump:

Code Block End time:         2021-01-29 15:58:32.475 +0100\
OS Version:       macOS 11.1 (Build 20C69)\
Architecture:     arm64e\
Report Version:   32\
Share With Devs:  Yes\
\
Data Source:      Stackshots\
Shared Cache:     64510D3B-D7B4-3C73-803C-AD9F01B790AD slid base address 0x18f298000, slide 0xf298000\
Shared Cache:     E2B1A630-68DD-30AC-A036-6AC018B154DA slid base address 0x7fff20094000, slide 0x94000\
\
Command:          MyApp\
Path:             /private/var/folders/*/MyApp.app/Contents/MacOS/MyApp\
Identifier:       com.companyname.myappid\
Version:          7.3.1 (815)\
Parent:           launchd [1]\
PID:              2264\
Time Since Fork:  464s\
Note:             Translocated\
\
Event:            hang\
Duration:         446.85s\
Duration Sampled: 4.70s (process was unresponsive for 442 seconds before sampling)\
Steps:            47 (100ms sampling interval)\
Report threshold: 2.5s\
\
Hardware model:   MacBookAir10,1\
Active cpus:      8\
\
Time Awake Since Boot: 2536s\
Time Since Wake:  n/a (machine hasn't slept)\
\
\
--------------------------------------------------\
Timeline format: stacks are sorted chronologically\
Use -i and -heavy to re-report with count sorting\
--------------------------------------------------\
\
\
Heaviest stack for the main thread of the target process:\
  47  <truncated backtrace>\
  47  -[NSBundle initWithPath:] + 392 (Foundation + 15300) [0x1903a1bc4]\
  47  access + 8 (libsystem_kernel.dylib + 5952) [0x18f548740]\
 *47  ??? (kernel.release.t8101 + 30696) [0xfffffe0007c137e8]\
 *47  ??? (kernel.release.t8101 + 1447416) [0xfffffe0007d6d5f8]\
 *47  ??? (kernel.release.t8101 + 6596008) [0xfffffe00082565a8]\
 *47  ??? (kernel.release.t8101 + 2786396) [0xfffffe0007eb445c]\
 *47  ??? (kernel.release.t8101 + 2785876) [0xfffffe0007eb4254]\
 *47  kauth_authorize_action + 252 (kernel.release.t8101 + 5274992) [0xfffffe0008113d70]\
 *47  VnodeScopeListener + 1000 (AppleFileUtil + 51028) [0xfffffe0008b98754]\
 *47  Placeholders_Hydrate + 304 (AppleFileUtil + 54376) [0xfffffe0008b99468]\
 *47  _Placeholders_Hydrate_Wait_For_Completion + 284 (AppleFileUtil + 56540) [0xfffffe0008b99cdc]\
 *47  Tickets_WaitOnTicketResponse + 732 (AppleFileUtil + 10076) [0xfffffe0008b8e75c]\
 *47  Kernel_Cond_Wait + 64 (AppleFileUtil + 45928) [0xfffffe0008b97368]\
 *47  ??? (kernel.release.t8101 + 5591856) [0xfffffe0008161330]\
 *47  lck_mtx_sleep_deadline + 132 (kernel.release.t8101 + 395372) [0xfffffe0007c6c86c]\
 *47  ??? (kernel.release.t8101 + 462928) [0xfffffe0007c7d050]\
 *47  ??? (kernel.release.t8101 + 468128) [0xfffffe0007c7e4a0]\
- - - 
  Binary Images:\
           0x1025ec000 -        0x102afbfff  com.companyname.myappid 7.3.1 (815)  <D7CFCE67-1556-322E-A82B-64604ECBB0E3>              /private/var/folders/*/MyApp.app/Contents/MacOS/MyApp\
           0x18f547000 -        0x18f579fff  libsystem_kernel.dylib (7195.60.75)      <35BFD663-2C38-3E0F-A35E-8C1BC6400898>              /usr/lib/system/libsystem_kernel.dylib\
           0x18f57a000 -        0x18f585fff  libsystem_pthread.dylib (454.60.1)       <EDB716F3-BF94-3941-B7DA-D6C91094C645>              /usr/lib/system/libsystem_pthread.dylib\
           0x18f5f8000 -        0x18faa1fff  com.apple.CoreFoundation 6.9 (1770.300)  <396F9604-7574-3C1B-ACA7-C7EB24FE3544>              /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation\
           0x19039e000 -        0x19072ffff  com.apple.Foundation 6.9 (1770.300)      <5CEA7350-F274-39AE-9F27-D9813F2C3A76>              /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation\
           0x191e10000 -        0x192b6efff  com.apple.AppKit 6.9 (2022.20.119)       <78F21674-643E-3793-B1CD-C8BDBC76BAD5>              /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit\
   *0xfffffe0007c0c000 - 0xfffffe00083f7fff  kernel.release.t8101 (7195.60.75)        <48F71DB3-6C91-3E62-9576-3A1DCEF2B536>TEXT_EXEC   /System/Library/Kernels/kernel.release.t8101\
   *0xfffffe0008b8c000 - 0xfffffe0008b9ffff  com.apple.fileutil 20.036.15 (20.036.15) <73495C49-0EF7-3EA5-ADC9-0BD2D90305A0>TEXT_EXEC   /System/Library/Extensions/AppleFileUtil.kext/Contents/MacOS/AppleFileUtil\
   *0xfffffe000a9d8000 - 0xfffffe000a9dffff  com.apple.kec.pthread 1.0 (1)            <EEB71141-5752-31E8-8495-2AF64D829A69>__TEXT_EXEC   /System/Library/Extensions/pthread.kext/Contents/MacOS/pthread\

Boost

Answer 1

Etresoft OP

Feb ’21

You should probably open a DTS ticket for this. It looks like you have some low-level kernel operations that are not working. Those are very difficult to do correctly.

1