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[Qemu-devel] [Bug 1587970] Re: QEMU Crashes when attaching USB 3.00 devi


From: Thomas Huth
Subject: [Qemu-devel] [Bug 1587970] Re: QEMU Crashes when attaching USB 3.00 devices to xhci bus
Date: Mon, 18 Dec 2017 09:48:56 -0000

Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU? Or could we close this ticket nowadays?

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1587970

Title:
  QEMU Crashes when attaching USB 3.00 devices to xhci bus

Status in QEMU:
  Incomplete

Bug description:
  Using qemu 2.6 with a windows7 32-bit VM, if I plug a USB 3.0 memory stick in 
to a USB 3.0 port, then pass it through to the VM via the monitor (device_add 
usb-host,bus=xhci.0,hostbus=xx,hostaddr=xx,id=stick1) then qemu asserts and 
dies - I have seen 2 different asserts one is from the xchi module - Assertion 
`intr->er_full, and one is in core.c (line 400 I IIRCC) with "Assertion 
dev->state == 3 failed"
  Tried to work around by only passing in an ehci controller to the VM, but 
then if I attach a usb 3.0 memory stick to that it doesn't work in windows.
  I have made sure the xhci drivers in the windows VM are up to date, latest 
version of SeaBios etc, but at the moment, I have had to disable xhci in my 
system bios and just use ehci for everything.

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