[Bug 221103] xhci_hcd: System lockup under CPU load during usbfs polling of USB devices on AMD platforms

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221103

--- Comment #30 from Andrew Skalski (voltara@gmail.com) ---
Created attachment 310748
  --> https://bugzilla.kernel.org/attachment.cgi?id=310748&action=edit
acpidump from affected wrx90 system

The "lspci -vvv" and "acpidump" outputs are now attached.

In my previous comment where I mentioned the "Refused to change power state
from D0 to D3hot" message, I forgot to say that I saw that message only rarely.

By relative frequency, here's what I generally see in "dmesg -W" output on
serial console:

Most of the time: nothing
Occasionally: "Long readout interval, skipping watchdog check: cs_nsec:
1528817647 wd_nsec: 1528818397"
Rarely: "Refused to change power state from D0 to D3hot"

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