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[Qemu-devel] [Bug 1635339] Re: qxl_pre_save assertion failure on vm "sav


From: elmarco
Subject: [Qemu-devel] [Bug 1635339] Re: qxl_pre_save assertion failure on vm "save"
Date: Fri, 07 Apr 2017 22:50:52 -0000

Your approach works ok Gerd with a migration blocker. Are you going to
send a patch?

I am afraid we would have to make this code permanent though, since
there has been several releases of this driver already, and it's much
nicer to block migration than to crash a VM.

I have reached out to wddm driver about the bug.

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https://bugs.launchpad.net/bugs/1635339

Title:
  qxl_pre_save assertion failure on vm "save"

Status in QEMU:
  Confirmed

Bug description:
  When I try and save my Windows 10 VM, I see an assertion failure, and
  the machine is shut down.

  I see the following in the log:

  main_channel_handle_parsed: agent start
  qemu-system-x86_64: /build/qemu-Zwynhi/qemu-2.5+dfsg/hw/display/qxl.c:2101: 
qxl_pre_save: Assertion `d->last_release_offset < d->vga.vram_size' failed.
  2016-10-20 11:52:42.713+0000: shutting down

  Please let me know what other information would be relevant!

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