3 kernel panics in the past 3 months???

Question

Level 1

4 points

3 kernel panics in the past 3 months???

I had this kernel panic on 9/8 - see below. I also had a kernel panic back on 7/26 that had a different cause - the July panic seemed to be linked to an antivirus software that I had installed, so I uninstalled that. There was a kernel panic back in June as well, but unfortunately I did not save that report.

Can anyone help me with what the cause might be of this latest kernel panic? I'm worried that with so many recent months that I might be in for a hardware failure soon, but that is pure conjecture at this point. Anyone want to share their thoughts or experiences? Thanks in advance for any assistance you can provide.

September 9 Panic Report

MacBook Pro 16″, macOS 14.3

Posted on Sep 2, 2025 12:02 PM

Reply

Answer 1

BobHarris

Level 9

56,471 points

Sep 2, 2025 01:19 PM in response to denisa23

The backtrace indicates you are in the USB driver code

panic(cpu 0 caller 0xffffff80211810c4): "qfull" @AppleVTD.cpp:2119
Panicked task 0xffffff986edfa428: 317 threads: pid 0: kernel_task
Backtrace (CPU 0), panicked thread: 0xffffff9d3aed2b30, Frame : Return Address
  Kernel Extensions in backtrace:
     com.apple.iokit.IOPCIFamily(2.9)
     com.apple.driver.usb.AppleUSBCommon(1.0)
     com.apple.driver.usb.AppleUSBXHCI(1.2)
        dependency: com.apple.driver.usb.AppleUSBCommon(1.0)
        dependency: com.apple.iokit.IOACPIFamily(1.4)
        dependency: com.apple.iokit.IOUSBHostFamily(1.2)
     com.apple.driver.usb.AppleUSBXHCIPCI(1.2)
        dependency: com.apple.driver.usb.AppleUSBCommon(1.0)
        dependency: com.apple.driver.usb.AppleUSBXHCI(1.2)
        dependency: com.apple.iokit.IOACPIFamily(1.4)
        dependency: com.apple.iokit.IOPCIFamily(2.9)
        dependency: com.apple.iokit.IOUSBHostFamily(1.2)

But the AppleVTD implies video (but I could be wrong about that).

Are you using DisplayLink software? Again this is just a guess.

But I would suspect that maybe there is something USB connected to your system that is misbehaving.

You could try unplugging different USB based devices and see if the problem goes away. I realize this could be a very long an tedious process if it is only happening once a month.

Reply

Answer 2

denisa23 Author

Level 1

4 points

Sep 2, 2025 04:41 PM in response to BobHarris

BobHarris - thanks so much for your response!

I have a USB hub plugged in all the time (USB-C from computer, 3 USB-A ports on the hub for peripherals). Most of the time, the hub just has a lightning cable plugged into it for connecting my iPhone to the computer; however, sometimes it also has a generic USB-A webcam plugged in as well (like today when this latest kernel panic happened). The webcam has been having very glitchy behavior in Zoom lately - so, that would cover USB and video issues. It's a very cheap product, so it would seem like a likely suspect. I'll try leaving it unplugged for a while and see what happens, or maybe I'll just get a newer/better webcam.

Thanks again for your help! Much appreciated!

Reply