[Qemu-devel] [Bug 1207623] [NEW] 64bit RHEL6.4 guest crashes and reboots continuously

[Yongjie Ren]

Public bug reported:

Environment:
------------
Host OS (ia32/ia32e/IA64):ia32e
Guest OS (ia32/ia32e/IA64):ia32e
Guest OS Type (Linux/Windows):Linux
kvm.git next Commit:9576c4cd6b6fa5716400e63618757b76cff6a813
qemu-kvm uq/master Commit:0779caeb1a17f4d3ed14e2925b36ba09b084fb7b
Host Kernel Version:3.11.0-rc1
Hardware: SandyBridge-EP


Bug detailed description:
--------------------------
RHEL6.4 guest alwasy crashes and reboots.     32bit RHEL6.4 and 64bit RHEL6.3 
guest can work fine.

kvm next   + qemu-kvm uq/master  =  result
9576c4cd  + 0779caeb   =  bad
9576c4cd + c3cb8e77   =  good

seems the following commit is the culprit commit.

commit 0779caeb1a17f4d3ed14e2925b36ba09b084fb7b
Author: Arthur Chunqi Li <address@hidden>
Date:   Sun Jul 7 23:13:37 2013 +0800

    Initialize IA32_FEATURE_CONTROL MSR in reset and migration

    The recent KVM patch adds IA32_FEATURE_CONTROL support. QEMU needs
    to clear this MSR when reset vCPU and keep the value of it when
    migration. This patch add this feature.

Reproduce steps:
----------------
1. qemu-system-x86_64 -enable-kvm -m 1024 -smp 2 -net none /root/rhel6u4.qcow


Current result:
----------------
guest reboot continuously 

Expected result:
----------------
guest boot up fine

Basic root-causing log:
----------------------
(guest serial port log is attached.)

** Affects: qemu-kvm
     Importance: Undecided
         Status: New

** Project changed: qemu => qemu-kvm

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1207623

Title:
  64bit RHEL6.4 guest crashes and reboots continuously

Status in qemu-kvm:
  New

Bug description:
  Environment:
  ------------
  Host OS (ia32/ia32e/IA64):ia32e
  Guest OS (ia32/ia32e/IA64):ia32e
  Guest OS Type (Linux/Windows):Linux
  kvm.git next Commit:9576c4cd6b6fa5716400e63618757b76cff6a813
  qemu-kvm uq/master Commit:0779caeb1a17f4d3ed14e2925b36ba09b084fb7b
  Host Kernel Version:3.11.0-rc1
  Hardware: SandyBridge-EP

  
  Bug detailed description:
  --------------------------
  RHEL6.4 guest alwasy crashes and reboots.     32bit RHEL6.4 and 64bit RHEL6.3 
guest can work fine.

  kvm next   + qemu-kvm uq/master  =  result
  9576c4cd  + 0779caeb   =  bad
  9576c4cd + c3cb8e77   =  good

  seems the following commit is the culprit commit.

  commit 0779caeb1a17f4d3ed14e2925b36ba09b084fb7b
  Author: Arthur Chunqi Li <address@hidden>
  Date:   Sun Jul 7 23:13:37 2013 +0800

      Initialize IA32_FEATURE_CONTROL MSR in reset and migration

      The recent KVM patch adds IA32_FEATURE_CONTROL support. QEMU needs
      to clear this MSR when reset vCPU and keep the value of it when
      migration. This patch add this feature.

  Reproduce steps:
  ----------------
  1. qemu-system-x86_64 -enable-kvm -m 1024 -smp 2 -net none /root/rhel6u4.qcow

  
  Current result:
  ----------------
  guest reboot continuously 

  Expected result:
  ----------------
  guest boot up fine

  Basic root-causing log:
  ----------------------
  (guest serial port log is attached.)

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu-kvm/+bug/1207623/+subscriptions