kernel panic three times since upgrading to 10.14.6

My panic logs were exactly the same as the ones above (AppleEmbeddedPCIeUpLinkMgmt::_linkInterruptAction(IOInterruptEventSource *, int): \" \"A link timeout has been seen after 100000 microseconds and 49999 iterations.).

Apple returned my Mac (2018 MBP) very quickly and replaced the "Logic Board" (Diagnosis: Kernel Freezes) and "Touch ID Board" (Diagnosis: Cable causing Issue) in it, the diagnostics at the Depot were able to reproduce the issue I assume. Updated to 10.14.6 18G87, no reboots so far and everything works perfectly.

The replacement logic board came with macOS 10.14.4, but the current Boot ROM (220.270.99.0.0) and iBridge/T2 (16.16.6568.0.0,0) firmware version on it. My old logic board had the same firmware versions on it.

Apple just now released a supplemental update for 10.14.6 which is supposed to fix sleeping Mac's that crash and other things. Installing it right now, will report in a couple of days if it fixed the issue for me.

After installation: macOS 10.14.6, Build 18G95, T2 firmware was updated to 16P6571, Boot ROM stayed at 220.270.99.0.0.

This issue is by now well known, affecting recent macs with a T2 chip.

A solution is also known. Install Catalina on a separate drive. You don’t even have to run Catalina. The installer does a firmware update that resolved the problem. If you don’t want to install the beta, the release version is due this month, probably very soon.

I dropped my Mac off at the Apple Store with the failure description, all the Apple support people I spoke with so far say that it sounds like a logic board issue.

Mine showed the same error message in the logs.

They replaced the logic board, but that didn't help. The recent update fixed the issue for me 100%. Not a single kernel panic since the update to build 18G95 even while doing long video-chats.

Same thing here, Apple Support told me to do the usual (NVRAM/PRAM Reset, SMC reset, clean install of macOS). Did all of that, machine still does it but only when Skyping/FaceTiming. Started to happen with macOS 10.14.6, never had any kernel panics before.

I have the same issue.

With my camera video on in Zoom, I randomly experience a kernel panic since upgrade to 10.14.6.

\f0\fs24 \cf0 \{"caused_by":"unknown","macos_version":"Mac OS X 10.14.6 (18G87)","os_version":"Bridge OS 3.6 (16P6568)","macos_system_state":"running","incident_id":"8B7A94CF-125C-48C4-91C8-0F6DE3D80B50","timestamp":"2019-08-09 16:10:07.84 +0000","bug_type":"210"\}\
\{\
  "build" : "Bridge OS 3.6 (16P6568)",\
  "product" : "iBridge2,3",\
  "kernel" : "Darwin Kernel Version 18.7.0: Tue Jun 25 21:35:19 PDT 2019; root:xnu-4903.270.47~9\\/RELEASE_ARM64_T8010",\
  "panicString" : "panic(cpu 0 caller 0xfffffff026f69bec): \\"void AppleEmbeddedPCIeUpLinkMgmt::_linkInterruptAction(IOInterruptEventSource *, int): \\" \\"A link timeout has been seen after 100000 microseconds and 49999 iterations.\\"@\\/BuildRoot\\/Library\\/Caches\\/com.apple.xbs\\/Sources\\/AppleEmbeddedPCIeUpLinkMgmt\\/AppleEmbeddedPCIeUpLinkMgmt-76.260.2\\/AppleEmbeddedPCIeUpLinkMgmt.cpp:3982
Debugger message: panic
Memory ID: 0x6
OS version: 16P6568
macOS version: 18G87
Kernel version: Darwin Kernel Version 18.7.0: Tue Jun 25 21:35:19 PDT 2019; root:xnu-4903.270.47~9\\/RELEASE_ARM64_T8010
iBoot version: iBoot-4513.270.14
secure boot?: YES
x86 EFI Boot State: 0x16
x86 System State: 0x0
x86 Power State: 0x0
x86 Shutdown Cause: 0x5
x86 Previous Power Transitions: 0x405060400
PCIeUp link state: 0x89271611
Paniclog version: 13
Kernel slide:     0x0000000020860000
Kernel text base: 0xfffffff027864000


Panicked task 0xffffffe00036a1c0: 8358 pages, 206 threads: pid 0: kernel_task

",\
  "panicFlags" : "0x2",\
  "otherString" : "
** Stackshot Succeeded ** Bytes Traced 108800 **
",\
  "macOSPanicFlags" : "0x0",\
  "macOSPanicString" : "BAD MAGIC! (flag set in iBoot panic header), no macOS panic log available",\
 
Model: MacBookPro15,1, BootROM 220.270.99.0.0 (iBridge: 16.16.6568.0.0,0), 6 processors, Intel Core i9, 2.9 GHz, 16 GB, SMC \
Graphics: kHW_IntelUHDGraphics630Item, Intel UHD Graphics 630, spdisplays_builtin\
Graphics: kHW_AMDRadeonPro560XItem, Radeon Pro 560X, spdisplays_pcie_device, 4 GB\
Memory Module: BANK 0/ChannelA-DIMM0, 8 GB, DDR4, 2400 MHz, Micron, 8ATF1G64HZ-2G6E1\
Memory Module: BANK 2/ChannelB-DIMM0, 8 GB, DDR4, 2400 MHz, Micron, 8ATF1G64HZ-2G6E1\
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x7BF), wl0: Mar 28 2019 19:17:52 version 9.137.9.0.32.6.34 FWID 01-36f56c94\
Bluetooth: Version 6.0.14d3, 3 services, 18 devices, 1 incoming serial ports\
Network Service: Wi-Fi, AirPort, en0\
USB Device: USB 3.1 Bus\
USB Device: iBridge Bus\
USB Device: iBridge DFR brightness\
USB Device: iBridge Display\
USB Device: Apple Internal Keyboard / Trackpad\
USB Device: Headset\
USB Device: iBridge ALS\
USB Device: iBridge FaceTime HD Camera (Built-in)\
USB Device: iBridge\
Thunderbolt Bus: MacBook Pro, Apple Inc., 42.1\
Thunderbolt Bus: MacBook Pro, Apple Inc., 42.1\
}

However since BridgeOS is what runs the Mac’s T2 chip It could be the hardware, but a secure enclave corruption in the 10.14.6 upgrade process is more likely.

I am having exactly the same issue with MacBook Pro 2019 after MacOS upgrade to 10.14.6. This is MacOS bug which should be fixed by Apple. The log file is the same:

{"caused_by":"unknown","macos_version":"Mac OS X 10.14.6 (18G87)","os_version":"Bridge OS 3.6 (16P6568)","macos_system_state":"running","incident_id":"5D7A6DF5-A9C7-490D-B8B4-31A25C0E5D8B","timestamp":"2019-08-16 08:08:24.27 +0000","bug_type":"210"}

{

  "build" : "Bridge OS 3.6 (16P6568)",

  "product" : "iBridge2,3",

  "kernel" : "Darwin Kernel Version 18.7.0: Tue Jun 25 21:35:19 PDT 2019; root:xnu-4903.270.47~9\/RELEASE_ARM64_T8010",

  "incident" : "5D7A6DF5-A9C7-490D-B8B4-31A25C0E5D8B",

  "crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001",

  "date" : "2019-08-16 08:08:24.21 +0000",

  "panicString" : "panic(cpu 0 caller 0xfffffff021e79bec): \"void AppleEmbeddedPCIeUpLinkMgmt::_linkInterruptAction(IOInterruptEventSource *, int): \" \"A link timeout has been seen after 100000 microseconds and 49999 iterations.\"@\/BuildRoot\/Library\/Caches\/com.apple.xbs\/Sources\/AppleEmbeddedPCIeUpLinkMgmt\/AppleEmbeddedPCIeUpLinkMgmt-76.260.2\/AppleEmbeddedPCIeUpLinkMgmt.cpp:3982\nDebugger message: panic\nMemory ID: 0xff\nOS version: 16P6568\nmacOS version: 18G87\nKernel version: Darwin Kernel Version 18.7.0: Tue Jun 25 21:35:19 PDT 2019; root:xnu-4903.270.47~9\/RELEASE_ARM64_T8010\nKernelCache UUID: DB4E28E6354462E8ADC412A804EB32E1\n

Exact same issue with me.

10.14.6 Update on a MacBookPro15,1 2018 MBP

Every single crash in the last 48 hours has been in the middle of a Zoom conference when video is being used.

BridgeOS crash/panic.

{"caused_by":"unknown","macos_version":"Mac OS X 10.14.6 (18G87)","os_version":"Bridge OS 3.6 (16P6568)","macos_system_state":"running","incident_id":"4DE4AC97-8C5D-4EA2-8446-5362999B1F9C","timestamp":"2019-08-23 04:32:04.03 +0000","bug_type":"210"}

and also the panic

"panicFlags" : "0x2",
"otherString" : "\n** Stackshot Succeeded ** Bytes Traced 108944 **\n",
"macOSPanicFlags" : "0x0",
"macOSPanicString" : "BAD MAGIC! (flag set in iBoot panic header), no macOS panic log available",

Going to try and roll back to 10.14.5

me7712,

After you restored 10.14.5, did you also reset the NVRAM and / or SMC to make sure any changes that were made by 10.14.6 were reset?

Thanks.

Same thing happening to me.

Here is what I'm seeing:

1. fails after random amount of time when my webcam is on while using: Facetime or Zoom. Sometimes as little as 1 minute in to the call. Sometimes as much as 25 minutes into the call.
2. has never failed when using zoom without the webcam on.
3. I tried the SMC reset. No change.

I'll update with any new information if / when I have it.

Same crash when using Skype or Zoom happening multiple times randomly. Mac OS X 10.14.6 (18G87). Everything started after update. I've reset SMC as advised by Apple but it didn't work.

I've made some stress testing and under 100% percent load for about an hour it didn't crash. So the problem seems to occur only when using camera in a call.

My panic string:

panic(cpu 0 caller 0xfffffff01b079bec): "void AppleEmbeddedPCIeUpLinkMgmt::_linkInterruptAction(IOInterruptEventSource *, int): " "A link timeout has been seen after 100000 microseconds and 49999 iterations."@/BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleEmbeddedPCIeUpLinkMgmt/AppleEmbeddedPCIeUpLinkMgmt-76.260.2/AppleEmbeddedPCIeUpLinkMgmt.cpp:3982
Debugger message: panic
Memory ID: 0xff
OS version: 16P6568
macOS version: 18G87
Kernel version: Darwin Kernel Version 18.7.0: Tue Jun 25 21:35:19 PDT 2019; root:xnu-4903.270.47~9/RELEASE_ARM64_T8010
KernelCache UUID: DB4E28E6354462E8ADC412A804EB32E1
Kernel UUID: 9FC93C85-B7C5-3723-92B7-293273AB9C4F
iBoot version: iBoot-4513.270.14
secure boot?: YES
x86 EFI Boot State: 0xe
x86 System State: 0x0
x86 Power State: 0x0
x86 Shutdown Cause: 0xc1
x86 Previous Power Transitions: 0x20002000200
PCIeUp link state: 0x94721611
Paniclog version: 13
Kernel slide:     0x0000000014970000
Kernel text base: 0xfffffff01b974000
mach_absolute_time: 0x440275aa38
Epoch Time:        sec       usec
  Boot    : 0x5d4ad3b0 0x000eb542
  Sleep   : 0x5d4b20ac 0x000acf3c
  Wake    : 0x5d4b2141 0x000d9018
  Calendar: 0x5d4b2558 0x00095a39

Panicked task 0xffffffe0007e9c20: 8221 pages, 207 threads: pid 0: kernel_task
Panicked thread: 0xffffffe000ba4530, backtrace: 0xffffffe0119e3590, tid: 280
		  lr: 0xfffffff01ba822a4  fp: 0xffffffe0119e3620
		  lr: 0xfffffff01bb6f5a4  fp: 0xffffffe0119e3760
		  lr: 0xfffffff01ba4d610  fp: 0xffffffe0119e3770
		  lr: 0xfffffff01ba81848  fp: 0xffffffe0119e3ae0
		  lr: 0xfffffff01ba81bc0  fp: 0xffffffe0119e3b20
		  lr: 0xfffffff01ba81a14  fp: 0xffffffe0119e3b40
		  lr: 0xfffffff01b079bec  fp: 0xffffffe0119e3bd0
		  lr: 0xfffffff01bf09fc4  fp: 0xffffffe0119e3c10
		  lr: 0xfffffff01bf08ad8  fp: 0xffffffe0119e3c50
		  lr: 0xfffffff01bf0834c  fp: 0xffffffe0119e3c90
		  lr: 0xfffffff01ba58614  fp: 0x0000000000000000

Same issue with my Macbook Pro 15" 2018.

Happens when I share my screen via Zoom! After some time screen goes black, machine shuts down.

The issue appeared first time 3-4 weeks ago. Not sure, it might be after Zoom updated its software?

My mac gets incredible hot during the screensharing (only Zoom, not Skype or Slack), but the fans don't seem to speed up - might overheating be an issue?

Thanks Kary for saving me and others time from going through the Apple store. So the solution is to install a cheap webcam and wait for Apple to fix this. I hope they fix it soon or at least extend the warranty to the affected devices.