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Mac Panic: userspace watchdog timeout: no successful checkin

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Jul 7th, 2020
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  1. panic(cpu 2 caller 0xffffff7f9c24fad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
  2. service: com.apple.logd, total successful checkins since load (2091 seconds ago): 210, last successful checkin: 0 seconds ago
  3. service: com.apple.WindowServer, total successful checkins since load (2091 seconds ago): 198, last successful checkin: 120 seconds ago
  4.  
  5. Backtrace (CPU 2), Frame : Return Address
  6. 0xffffff87677a3720 : 0xffffff801b11f5cd mach_kernel : _handle_debugger_trap + 0x49d
  7. 0xffffff87677a3770 : 0xffffff801b258b05 mach_kernel : _kdp_i386_trap + 0x155
  8. 0xffffff87677a37b0 : 0xffffff801b24a68e mach_kernel : _kernel_trap + 0x4ee
  9. 0xffffff87677a3800 : 0xffffff801b0c5a40 mach_kernel : _return_from_trap + 0xe0
  10. 0xffffff87677a3820 : 0xffffff801b11ec97 mach_kernel : _DebuggerTrapWithState + 0x17
  11. 0xffffff87677a3920 : 0xffffff801b11f087 mach_kernel : _panic_trap_to_debugger + 0x227
  12. 0xffffff87677a3970 : 0xffffff801b8c2838 mach_kernel : _panic_with_thread_context
  13. 0xffffff87677a39e0 : 0xffffff7f9c24fad5 com.apple.driver.watchdog : __ZN10IOWatchdog14userspacePanicEP8OSObjectPvP25IOExternalMethodArguments.cold.1 + 0x27
  14. 0xffffff87677a39f0 : 0xffffff7f9c24f7fa com.apple.driver.watchdog : __ZN10IOWatchdog35userspaceDisableUserspaceMonitoringEP8OSObjectPvP25IOExternalMethodArguments
  15. 0xffffff87677a3a10 : 0xffffff801b854a8e mach_kernel : __ZN12IOUserClient14externalMethodEjP25IOExternalMethodArgumentsP24IOExternalMethodDispatchP8OSObjectPv + 0x1de
  16. 0xffffff87677a3a60 : 0xffffff7f9c24ecfe com.apple.driver.watchdog : __ZN20IOWatchdogUserClient14externalMethodEjP25IOExternalMethodArgumentsP24IOExternalMethodDispatchP8OSObjectPv + 0x7c
  17. 0xffffff87677a3b60 : 0xffffff801b85dcb3 mach_kernel : _is_io_connect_method + 0x223
  18. 0xffffff87677a3ca0 : 0xffffff801b2082b2 mach_kernel : _iokit_server_routine + 0x4e72
  19. 0xffffff87677a3db0 : 0xffffff801b125328 mach_kernel : _ipc_kobject_server + 0x238
  20. 0xffffff87677a3e10 : 0xffffff801b0fbcc5 mach_kernel : _ipc_kmsg_send + 0x135
  21. 0xffffff87677a3e70 : 0xffffff801b112aa2 mach_kernel : _mach_msg_overwrite_trap + 0x2d2
  22. 0xffffff87677a3f00 : 0xffffff801b230d05 mach_kernel : _mach_call_munger64 + 0x205
  23. 0xffffff87677a3fa0 : 0xffffff801b0c6226 mach_kernel : _hndl_mach_scall64 + 0x16
  24. Kernel Extensions in backtrace:
  25. com.apple.driver.watchdog(1.0)[************replaced_string***************]@0xffffff7f9c24e000->0xffffff7f9c256fff
  26.  
  27. BSD process name corresponding to current thread: watchdogd
  28. Boot args: keepsyms=1 debug=0x100 npci=0x2000 alcid=1 agdpmod=pikera
  29.  
  30. Mac OS version:
  31. 19F101
  32.  
  33. Kernel version:
  34. Darwin Kernel Version 19.5.0: Tue May 26 20:41:44 PDT 2020; root:xnu-6153.121.2~2/RELEASE_X86_64
  35. Kernel UUID: *****Replaced_String*****
  36. Kernel slide: 0x000000001ae00000
  37. Kernel text base: 0xffffff801b000000
  38. __HIB text base: 0xffffff801af00000
  39. System model name: iMacPro1,1(Mac-***replaced_string****)
  40. System shutdown begun: NO
  41. Panic diags file available: YES (0x0)
  42.  
  43. System uptime in nanoseconds: 2104464332343
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