On 01/25/2011 08:29 PM, Ruben Kerkhof wrote:
> When you say "suddenly", this was with no changes to software and hardware?
The host software and hardware hasn't changed in the two months since
the machine has been running. 2.6.34.7 kernel and qemu-kvm 0.13.
We host customer vms on it though, so virtual machines come and go.
Various operating systems, a mixture of Linux, FreeBSD and Windows
2008 R2. We have other machines with the same config without these
problems though.
Are those other machines running a similar workload?
The traces look awfully like bad hardware, though that can also be
explained by random memory corruption due to a bug.
This time I have a few different messages though:
2011-01-25T11:58:50.001208+01:00 phy005 kernel: general protection fault: 0000 [#1] SMP
RSI: 0000000000000000 RDI: 1603a07305001568
2011-01-25T11:58:50.001486+01:00 phy005 kernel: Code: ff ff 41 8b 46
08 41 29 06 4c 89 e7 57 9d 0f 1f 44 00 00 48 83 c4 18 5b 41 5c 41 5d
41 5e 41 5f c9 c3 55 48 89 e5 0f 1f 44 00 00<f0> ff 4f 08 0f 94 c0 84
c0 74 10 85 f6 75 07 e8 63 fe ff ff eb
lock decl 0x8(%rdi)
%rdi is completely crap, looks like corruption again. Strangely, it is
similar to the bad spte from the previous trace: 0x1603a0730500d277.
The upper 48 bits are identical, the lower 16 bits are different.:
2011-01-25T12:06:32.673937+01:00 phy005 kernel: qemu-kvm: Corrupted
page table at address 7f37b37ff000
2011-01-25T12:06:32.673959+01:00 phy005 kernel: PGD c201d1067 PUD
94e538067 PMD 61e5bf067 PTE 1603a0730500e067
Here are those magic 48 bits again, in the PTE entry.
2011-01-25T12:38:49.416943+01:00 phy005 kernel: EPT: Misconfiguration.
2011-01-25T12:38:49.417518+01:00 phy005 kernel: EPT: GPA: 0x2abff038
2011-01-25T12:38:49.417526+01:00 phy005 kernel:
ept_misconfig_inspect_spte: spte 0x5f49e9007 level 4
2011-01-25T12:38:49.417532+01:00 phy005 kernel:
ept_misconfig_inspect_spte: spte 0x5db595007 level 3
2011-01-25T12:38:49.417553+01:00 phy005 kernel:
ept_misconfig_inspect_spte: spte 0x5d5da7007 level 2
2011-01-25T12:38:49.417558+01:00 phy005 kernel:
ept_misconfig_inspect_spte: spte 0x1603a07305006277 level 1
Again.
2011-01-25T13:16:58.192440+01:00 phy005 kernel: BUG: Bad page map in
process qemu-kvm pte:1603a0730500d067 pmd:61059f067
Again.
However, these all came from a single boot, yes? If so they can be the
same corruption. Please collect more traces, with reboots in between.
--
error compiling committee.c: too many arguments to function
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