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[Qemu-devel] [Bug 1204697] Re: guest disk accesses lead to ATA errors +


From: Michael Tokarev
Subject: [Qemu-devel] [Bug 1204697] Re: guest disk accesses lead to ATA errors + host vcpu0 unhandled wrmsr/rdmsr
Date: Tue, 06 Aug 2013 08:26:26 -0000

The fix is in a62eaa26c1d6d48fbdc3ac1d32bd1314f5fdc8c9 "ahci: Fix FLUSH
command", should be in 1.6 and 1.5.3.

** Changed in: qemu
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1204697

Title:
  guest disk accesses lead to ATA errors + host vcpu0 unhandled
  wrmsr/rdmsr

Status in QEMU:
  Fix Committed
Status in “qemu” package in Debian:
  Confirmed

Bug description:
  Hi.

  This is from http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717724.

  Using Debian sid with 1.5.0-5 my Linux VMs (also Debian sid) are broken. When 
they boot I get gazillions of ATA errors inside the guest, as well as:
  [  242.479951] kvm [7790]: vcpu0 unhandled rdmsr: 0x345
  [  242.483683] kvm [7790]: vcpu0 unhandled wrmsr: 0x680 data 0
  [  242.483687] kvm [7790]: vcpu0 unhandled wrmsr: 0x6c0 data 0
  [  242.483689] kvm [7790]: vcpu0 unhandled wrmsr: 0x681 data 0
  [  242.483691] kvm [7790]: vcpu0 unhandled wrmsr: 0x6c1 data 0
  [  242.483693] kvm [7790]: vcpu0 unhandled wrmsr: 0x682 data 0
  [  242.483696] kvm [7790]: vcpu0 unhandled wrmsr: 0x6c2 data 0
  [  242.483698] kvm [7790]: vcpu0 unhandled wrmsr: 0x683 data 0
  [  242.483700] kvm [7790]: vcpu0 unhandled wrmsr: 0x6c3 data 0
  [  242.483702] kvm [7790]: vcpu0 unhandled wrmsr: 0x684 data 0
  [  242.483704] kvm [7790]: vcpu0 unhandled wrmsr: 0x6c4 data 0
  [  242.988307] kvm [7790]: vcpu0 unhandled rdmsr: 0xe8
  [  242.988312] kvm [7790]: vcpu0 unhandled rdmsr: 0xe7
  [  242.988314] kvm [7790]: vcpu0 unhandled rdmsr: 0xce
  [  242.988316] kvm [7790]: vcpu0 unhandled rdmsr: 0xce
  [  242.988318] kvm [7790]: vcpu0 unhandled rdmsr: 0x1ad
  [  242.988320] kvm [7790]: vcpu0 unhandled rdmsr: 0xce
  [  242.988322] kvm [7790]: vcpu0 unhandled rdmsr: 0xe8
  [  242.988324] kvm [7790]: vcpu0 unhandled rdmsr: 0xe7
  [  242.988598] kvm [7790]: vcpu0 unhandled rdmsr: 0xce

  in the host.

  Please have a look at the Debian bug, for screenshots and more info.
  The problem didn't occur in 1.5.0-4 and there were basically no changes 
inside the VM (i.e. no kernel upgrade or so).

  Thanks,
  Chris.

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