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[Serge Hallyn <1208455@xxxxxxxxxxxxxxxxxx>]

All the kernel logs I"ve seen have shown oops at rtc_sysfs_del_device,
starting with something like

[  509.317630] general protection fault: 0000 [#1] SMP 
[  509.320084] Modules linked in: dm_crypt(F) kvm_intel kvm ppdev(F) nls_utf8 isofs(F) microcode(F) parport_pc(F) pvpanic parport(F) psmouse(F) serio_raw(F) i2c_piix4 mac_hid cirrus syscopyarea(F) sysfillrect(F) sysimgblt(F) ttm drm_kms_helper drm floppy(F) e1000(F)
[  509.320084] CPU: 0 PID: 1335 Comm: dpkg Tainted: GF            3.10.0-6-generic #17-Ubuntu
[  509.320084] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  509.320084] task: c6143380 ti: c1a42000 task.ti: c338a000
[  509.320084] EIP: 0060:[<c12e46de>] EFLAGS: 00014086 CPU: 0
[  509.320084] EIP is at number.isra.2+0xe/0x350
[  509.320084] EAX: c7eec000 EBX: c17e2633 ECX: 00000021 EDX: c1a46380
[  509.320084] ESI: c17e2633 EDI: c1a45fbe EBP: c1a43618 ESP: c1a435ac
[  509.320084]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[  509.320084] CR0: 8005003b CR2: 00000000 CR3: 01a36000 CR4: 000006f0
[  509.320084] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[  509.320084] DR6: ffff0ff0 DR7: 00000400
[  509.320084] Stack:
[  509.320084]  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[  509.320084]  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[  509.320084]  00000000 c17e262e c17e262f c1a43618 c12e40e3 c1a43648 c17e262e c17e2632
[  509.320084] Call Trace:
[  509.320084]  [<c12e40e3>] ? format_decode+0x323/0x390
[  509.320084]  [<c12e5f8c>] vsnprintf+0x2bc/0x390
[  509.320084]  [<c12e6076>] vscnprintf+0x16/0x30
[  509.320084]  [<c104990b>] vprintk_emit+0x12b/0x530
[  509.320084]  [<c161a120>] printk+0x50/0x52
[  509.320084]  [<c10347c9>] doublefault_fn+0x39/0x120
[  509.320084]  [<c14b8c20>] ? rtc_sysfs_del_device+0x30/0x30

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https://bugs.launchpad.net/bugs/1208455

Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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