[dpdk-dev] [PATCH 2/2] but/pci: fix fd close for hot-unplug

[Stephen Hemminger]

On Wed,  7 Nov 2018 17:41:31 +0800
Jeff Guo <jia.guo at intel.com> wrote:

> When device is hot-unplugged, the device fd will be deleted in kernel.
> Then in the progress of detaching device, if it try to close the fd,
> it will cause a kernel crash, which shown a kernel null pointer error.

If this happens, then it is a kernel bug and the kernel should be fixed.
Working around it in userspace is not a great long term solution.