Updated the Resolution to point to System ROMs located on HP.com replacing the links to the Single Point System ROMs on the HP FTP site.
Original Document Release.
Certain HP ProLiant servers with AMD Opteron (6200-series processors) running a Hypervisor host operating system such as VMware ESXi 5.X or VMware ESX/ESXi 4.X, may intermittently encounter operating system unresponsiveness, a kernel panic or VMware Purple Screen (PSOD). If this occurs, one of the following error messages may be displayed:
CPUx tried to re-acquire lock CpuSchedCore. X
Page Fault # PF Exception 14 in CpuSchedVcpuSwitch()
System unresponsiveness, a kernel panic, or VMware ESXi Purple Screen (PSOD) may occur during moderate to heavy CPU stress or when network stress occurs between Virtual Machines (VMs) while the system is configured with a supported System ROM version dated 12/08/2012 or 12/09/2012.
This issue may randomly occur on servers with AMD Opteron 6200-series processors running VMware ESXi 5.X or ESX/ESXi 4.X, but there is a potential for it to occur while running other Hypervisor operating systems. The affected servers are listed in the Scope of this advisory.
The following is an example of a VMware ESX/ESXi 4.1 Purple Screen with the following error message displayed:
Page Fault # PF Exception 14 in CpuSchedVcpuSwitch()
VMware ESX/ESXi 4.X:
This error message may be encountered on the affected servers that include AMD Opteron 6200-series processors running VMware ESX/ESXi 4.1. The actual PSOD message displayed is dependent on the failure mode:
VMware ESXi 5.X:
The following is an example of a PSOD screenshot that may be encountered on a server running VMware ESXi 5.X; the actual PSOD message displayed is dependent on the failure mode:
The following is an example of entries that may be displayed in the VMkernel-zdump.log file when this problem occurs:
Kernel Dump Info (if any) (var/core/vmkernel-zdump.log):
2013-02-13T18:23:00.492Z cpu1:10886)@BlueScreen: CPU 1 tried to re-acquire lock CpuSchedCore.01
2013-02-13T18:23:00.493Z cpu1:10886)Code start: 0x418022000000 VMK uptime: 0:01:03:39.029
2013-02-13T18:23:00.494Z cpu1:10886)0x41222a187ac8:[0x41802206d6e2]Panic@vmkernel#nover+0xa9 stack: 0x41000a3df590
2013-02-13T18:23:00.495Z cpu1:10886)0x41222a187b28:[0x41802207f484]SP_WaitLockIRQ@vmkernel#nover+0x9b stack: 0x1
2013-02-13T18:23:00.496Z cpu1:10886)0x41222a187c58:[0x4180221f0a4a]CpuSchedIdleLoopInt@vmkernel#nover+0xa2d stack: 0x100000000
2013-02-13T18:23:00.497Z cpu1:10886)0x41222a187cc8:[0x4180221f42ca]CpuSchedTryBusyWait@vmkernel#nover+0x1fd stack: 0x4
2013-02-13T18:23:00.498Z cpu1:10886)0x41222a187e68:[0x4180221f67ca]CpuSchedChooseAndSwitch@vmkernel#nover+0x1375 stack: 0x2
2013-02-13T18:23:00.499Z cpu1:10886)0x41222a187ed8:[0x4180221f710b]CpuSchedDispatch@vmkernel#nover+0x50e stack: 0x29bd13d0
2013-02-13T18:23:00.500Z cpu1:10886)0x41222a187f48:[0x4180221f74b9]CpuSchedWait@vmkernel#nover+0x228 stack: 0x41000a3ec1b8
2013-02-13T18:23:00.501Z cpu1:10886)0x41222a187f98:[0x4180221f770d]CpuSched_VcpuHalt@vmkernel#nover+0x184 stack: 0x41002a7032a4
2013-02-13T18:23:00.502Z cpu1:10886)0x41222a187fe8:[0x4180220d972b]VMMVMKCall_Call@vmkernel#nover+0x186 stack: 0x0
To prevent the PSOD from occurring update the following servers with the System ROM dated 2012.12.17 (or later) located on HP.com.
- HP ProLiant BL465c Gen8 Server series
- HP ProLiant DL385p Gen8 Server series
- HP ProLiant BL685c G7 Server series
- HP ProLiant DL585 G7 Server series
Perform the following steps to obtain the latest System ROM:
- Click on the following link:
- Click on Drivers & Software.
- Enter a product name (e.g., ProLiant DL685c G7) and click on Search.
- Select the specific ProLiant model.
- Select the appropriate operating system.
- Click on the category BIOS - System ROM.
- Locate, download, and install the System ROM dated 2012.12.17 (or later).
RECEIVE PROACTIVE UPDATES
: Receive support alerts (such as Customer Advisories), as well as updates on drivers, software, firmware, and customer replaceable components, proactively via e-mail through HP Subscriber's Choice. Sign up for Subscriber's Choice at the following URL:
: For hints on navigating HP.com to locate the latest drivers, patches, and other support software downloads for ProLiant servers and Options, refer to the
Navigation Tips document
: For hints on locating similar documents on HP.com, refer to the
Search Tips document
To search for additional advisories related to VMware ESXi 5.0, use the following search string:
+Advisory +ProLiant -"Software and Drivers" +VMware
VMware, ESX/ESXi 4.x, ESXi 5.x, AMD, PSOD, CPUx tried to re-acquire lock CpuSchedCore. x"
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