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From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20060202 Fedora/1.7.12-1.5.2 Description of problem: I'm trying to run the latest hypervisor kernel for x86_64, on a HP Proliant DL385 2 x Dual Core Opteron server. The system boots up, but there are some suspicious warnings logged: Feb 27 17:15:14 domzero2 kernel: Could not allocate 8 bytes percpu data Then, the system runs for a couple minutes/hours, after which it hangs and stops reacting to any input. It doesn't react to CTRL-ALT-DELETE. There are no messages left in the logs (I'm logging everything to a separate syslog host). There's no extra output on the VGA console when the system hangs. If you could give me a hint how to perform some more detailed debugging, I'll happily try it out. Currently, there are no I could also reproduce the problem with an earlier hypervisor kernel for x86_64, 2.6.15-1.1955_FC5hypervisor. Version-Release number of selected component (if applicable): kernel-xen-hypervisor-2.6.15-1.1977_FC5.x86_64 How reproducible: Always Steps to Reproduce: 1. Install kernel-xen-hypervisor-2.6.15-1.1977_FC5.x86_64.rpm 2. Change to this kernel in grub.conf 3. Reboot 4. Let the machine work for a couple minutes/hours. Additional info:
Created attachment 125324 [details] dmesg file from the affected machine The dmesg has been generated by the 2.6.15-1.1977_FC5hypervisor kernel.
Created attachment 125325 [details] dmesg from the ordinary SMP kernel For coparison, I'm attaching a dmesg file that has been generated by ordinary SMP kernel, 2.6.15-1.1955_FC5.
There's another problem with the latest Xen kernel on x86_64 (2.6.15-1.2025_FC5xen0) - a kernel crash, I've opened bug 184378 covering it.
It seems that the later kernels have this problem fixed. I'm currently running 2.6.15-1.2038_FC5xen0 and have accumulated 3 days uptime without a hang.
Closing per comment above; Reopen if required.