[Bug 604730] [NEW] can't "stop qemu-kvm", if cgroup is running

[edison]

Public bug reported:

Binary package hint: qemu-kvm

On Ubuntu 10.04 LTS (2.6.32-22-server), amd 64
Both qemu-kvm and libcgroup1, cgroup-bin are installed.
If I start cgconfig, by "service cgconfig start", then "stop qemu-kvm", which will hang at "modprobe -r kvm_amd"
the kernel error message:

Jul 12 10:38:59 kvm1 CGRE[1251]: Started the CGroup Rules Engine Daemon.
Jul 12 10:40:00 kvm1 kernel: [   82.520025] Clocksource tsc unstable (delta = -300216399 ns)
Jul 12 10:49:22 kvm1 kernel: [  644.691168] kvm: Nested Virtualization enabled
Jul 12 10:50:26 kvm1 kernel: [  708.648143] kvm: Nested Virtualization enabled
Jul 12 10:52:38 kvm1 kernel: [  840.554159] modprobe      D 00000000ffffffff     0  1646   1643 0x00000000
Jul 12 10:52:38 kvm1 kernel: [  840.554180]  ffff880037693c58 0000000000000086 0000000000015bc0 0000000000015bc0
Jul 12 10:52:38 kvm1 kernel: [  840.554204]  ffff8801180fc890 ffff880037693fd8 0000000000015bc0 ffff8801180fc4d0
Jul 12 10:52:38 kvm1 kernel: [  840.554225]  0000000000015bc0 ffff880037693fd8 0000000000015bc0 ffff8801180fc890
Jul 12 10:52:38 kvm1 kernel: [  840.554246] Call Trace:
Jul 12 10:52:38 kvm1 kernel: [  840.554271]  [<ffffffff8155593d>] schedule_timeout+0x22d/0x300
Jul 12 10:52:38 kvm1 kernel: [  840.554290]  [<ffffffff8102e371>] ? native_smp_send_reschedule+0x41/0x60
Jul 12 10:52:38 kvm1 kernel: [  840.554306]  [<ffffffff8104ca06>] ? resched_task+0x76/0x90
Jul 12 10:52:38 kvm1 kernel: [  840.554323]  [<ffffffff8105b186>] ? try_to_wake_up+0x286/0x380
Jul 12 10:52:38 kvm1 kernel: [  840.554337]  [<ffffffff81554bf6>] wait_for_common+0xd6/0x170
Jul 12 10:52:38 kvm1 kernel: [  840.554350]  [<ffffffff8105b280>] ? default_wake_function+0x0/0x20
Jul 12 10:52:38 kvm1 kernel: [  840.554365]  [<ffffffff81554d4d>] wait_for_completion+0x1d/0x20
Jul 12 10:52:38 kvm1 kernel: [  840.554379]  [<ffffffff810808c5>] flush_cpu_workqueue+0x65/0xa0
Jul 12 10:52:38 kvm1 kernel: [  840.554395]  [<ffffffff81080a40>] ? wq_barrier_func+0x0/0x20
Jul 12 10:52:38 kvm1 kernel: [  840.554407]  [<ffffffff81080bac>] flush_workqueue+0x4c/0x80
Jul 12 10:52:38 kvm1 kernel: [  840.554424]  [<ffffffff810b5f94>] __stop_machine+0xf4/0x120
Jul 12 10:52:38 kvm1 kernel: [  840.554438]  [<ffffffff8109af10>] ? __unlink_module+0x0/0x30
Jul 12 10:52:38 kvm1 kernel: [  840.554451]  [<ffffffff810b61ee>] stop_machine+0x3e/0x60
Jul 12 10:52:38 kvm1 kernel: [  840.554465]  [<ffffffff8109e550>] free_module+0x30/0x150
Jul 12 10:52:38 kvm1 kernel: [  840.554479]  [<ffffffff8109e8ae>] sys_delete_module+0x1ee/0x270
Jul 12 10:52:38 kvm1 kernel: [  840.554495]  [<ffffffff8108962e>] ? up_read+0xe/0x10
Jul 12 10:52:38 kvm1 kernel: [  840.554508]  [<ffffffff8155a003>] ? do_page_fault+0x153/0x3b0
Jul 12 10:52:38 kvm1 kernel: [  840.554525]  [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b

** Affects: qemu-kvm (Ubuntu)
     Importance: Undecided
         Status: New

-- 
can't "stop qemu-kvm", if cgroup is running
https://bugs.launchpad.net/bugs/604730
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to qemu-kvm in ubuntu.