Re: patch "xhci: Fix use-after-free in xhci_free_virt_device" causes kernel crashes on 4.16.8 on unplug

On Fri, May 11, 2018 at 07:15:08PM -0400, Jacob Saunders wrote:

On Linux kernel 4.16.8 (using Arch Linux) if I eject a USB 3.0 device from my system (unplug or "udisksctl power-off --block-device /dev/sde), it freezes instantly with a null pointer error in XHCI. I've been unable to successfully capture a kernel log of the error (and my cameras did not return usable results) and the screen begins scrolling near-immediately with hung processors in a VT.  I have done a git bisection (between 4.16.7 and 4.16.7) narrowing it down to the following commit:

As discussed on the linux-usb mailing list, there's a fix for this coming.

thanks,

greg k-h