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Mike Pass Author

Level 1

10 points

Kernel Panic - DCPEXT1 PANIC

panic report

I get a kernel panic event every night while I'm asleep and not using my Mac. The panic report states that it's a DCPEXT1 PANIC event. Particularly:

panic(cpu 0 caller 0xfffffe001fca5e40): DCPEXT1 PANIC - CXXnew[]:262256 - main(3)

CXXnew[]:262256

RTKit: RTKit-2062.120.2.debug - Client: local-t600xdcp.release

!UUID: 44664bca-4597-39ff-951d-35d55b059431

Time: 0x00001dac6b0ef160

Faulting task 3 Call Stack: 0x000000000001e3a8 0x000000000001ddac 0x000000000001dba8 0x0000000000020ed0 0x000000000001f18c 0x0000000000198154 0x0000000000029628 0x0000000000026bf0 0x0000000000024350 0x0000000000025c30 0x0000000000025b38 0x000000000003b1c0 0x000000000001e848 0x000000000000c1d0 0x000000000000cf10

I'm not sure what might be causing this issue or how to address it. Any suggestions? From what it looks like, I don't have any non-apple kexts loaded.

MacBook Pro (2021)

Posted on Jun 15, 2023 9:36 PM

Similar questions

6 replies

Mike Pass Author

Level 1

10 points

Jun 16, 2023 3:47 PM in response to Mike Pass

Other people seem to be experiencing this issue. Someone else had the same kernel panic message recently:

Big Sur panic when connect/disconn… | Apple Developer Forums

Unfortunately, I’m not seeing a readily available fix. The best fix may be to stop using my USB-C dock.

Mike Pass Author

Level 1

10 points

Jun 16, 2023 3:38 PM in response to Barney-15E

Yes. I have an an USB-C hub that drives 2 monitors.

Nov 10, 2023 7:54 AM in response to Mike Pass

I have the same problem. I have an M2 Macbook Pro 16, AFAIK it happens when the computer is in sleep mode. Started to happen when I plugged an HDMI cable to a Samsung Monitor.

panic(cpu 4 caller 0xfffffe001f7c81f4): DCPEXT1 PANIC - CXXnew[]:262256 - main(6)
CXXnew[]:262256
RTKit: RTKit-2413.1.1.release - Client: local-t602xdcp.release
!UUID: ab502671-3a53-3803-b9b6-7a93950eb107
Time: 0x0000022059032f1f

RTBuddy(AP): Debug info:
_iopStatus = 0x8
_powerStateChangeLocked = false
Mailbox Status:
IDLE_STATUS: 0x0000002d
INBOX0_CTRL: 0x00028801
OUTBOX0_CTRL: 0x00020001

Kernel Extensions in backtrace:
         com.apple.driver.IOSlaveProcessor(1.0)[BFD8D86E-6E2B-3FDE-8CAF-9015DF04D919]@0xfffffe001f1fd780->0xfffffe001f1ff133
         com.apple.driver.RTBuddy(1.0)[2130B2A7-6939-309D-B935-45A52B6A3293]@0xfffffe001f7a44b0->0xfffffe001f7e3b57
            dependency: com.apple.driver.AppleA7IOP(1.0.2)[0A128D7B-2DB2-3538-A28A-C14E921D8D47]@0xfffffe001d307660->0xfffffe001d3191d7
            dependency: com.apple.driver.AppleARMPlatform(1.0.2)[46E2D12C-E153-3DD2-999C-FFF05EC8A75E]@0xfffffe001d3adb90->0xfffffe001d400477
            dependency: com.apple.driver.IOSlaveProcessor(1)[BFD8D86E-6E2B-3FDE-8CAF-9015DF04D919]@0xfffffe001f1fd780->0xfffffe001f1ff133
            dependency: com.apple.iokit.IOReportFamily(47)[33EBDCB5-9A17-329E-8C87-F4ED89130494]@0xfffffe001f155f60->0xfffffe001f158ff3
            dependency: com.apple.kec.corecrypto(14.0)[56DAE22C-E793-3A85-8375-EE4F194FBDAF]@0xfffffe001faf64c0->0xfffffe001fb46693

jhanc92

Level 1

12 points

Jul 1, 2024 7:13 AM in response to Mike Pass

Just replying to say that I too had this issue today on July 1, 2024. But there are stacks and stacks of code. I don't pretend to know that I am talking about - because I don't lol. But I Googled this and found this post and thought I should indicate that I had it happen as well.

I've got an M1 Macbook Pro running Ventura 13.3 because (I realize that I should update - I just have not made the time to do so.)

Barney-15E

Level 10

116,680 points

Jun 16, 2023 10:28 AM in response to Mike Pass

Do you have any external hardware attached?

Barney-15E

Level 10

116,680 points

Jun 16, 2023 5:20 PM in response to Mike Pass

If you remove the Dock and the panics stop, find another Dock or seek a firmware fix from the manufacturer. If you are using DisplayLink, seek an update from them.

Kernel Panic - DCPEXT1 PANIC