Re: [Xen-devel] Another dom0 crash (Unable to handle kernel NULLpointer dereference)

["Christopher S. Aker" <caker@xxxxxxxxxxxx>]

Ian Pratt wrote:
> > Subject: [Xen-devel] Another dom0 crash (Unable to handle 
> > kernel NULLpointer dereference)
> > This time running Xen 3.0.2-2, PAE
> Please can you supply more information e.g. how many VMs were running,
> do you know what they were doing, can you repro, details about the h/w,
> amount of memory etc. This is a separate issue from the previous one. 
>
> I seem to recall a similar crash has been reported before, but there was
> no repro information in the report either.
>
> Thanks,
> Ian
There were roughly 40 VMs running on the machine.  Host server is a 
SuperMicro AS-1020A-T, 16G RAM (only 14 shows in Xen :( ), 3ware 
9550SX-4LP h/w raid card.
I don't have an easy way to reproduce this.  It seems to have happened 
this time and last when I asked a few of the VM runners to exec hdparm -t.
# lspci
0000:00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8132 PCI-X 
Bridge (rev 11)
0000:00:01.1 PIC: Advanced Micro Devices [AMD] AMD-8132 PCI-X IOAPIC 
(rev 11)
0000:00:02.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8132 PCI-X 
Bridge (rev 11)
0000:00:02.1 PIC: Advanced Micro Devices [AMD] AMD-8132 PCI-X IOAPIC 
(rev 11)
0000:00:06.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8111 PCI (rev 07)
0000:00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-8111 LPC (rev 05)
0000:00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-8111 IDE 
(rev 03)
0000:00:07.2 SMBus: Advanced Micro Devices [AMD] AMD-8111 SMBus 2.0 (rev 02)
0000:00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05)
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] HyperTransport Technology Configuration
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] Address Map
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] DRAM Controller
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] Miscellaneous Control
0000:00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] HyperTransport Technology Configuration
0000:00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] Address Map
0000:00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] DRAM Controller
0000:00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 
[Athlon64/Opteron] Miscellaneous Control
0000:01:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB 
(rev 0b)
0000:01:00.1 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB 
(rev 0b)
0000:01:04.0 VGA compatible controller: ATI Technologies Inc Rage XL 
(rev 27)
0000:02:01.0 RAID bus controller: 3ware Inc: Unknown device 1003
0000:02:03.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 
Gigabit Ethernet (rev 10)
0000:02:03.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 
Gigabit Ethernet (rev 10)
0000:03:03.0 RAID bus controller: Marvell Technology Group Ltd. 
MV88SX6041 4-port SATA II PCI-X Controller (rev 03)
Thanks,
-Chris


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