Red Hat Bugzilla – Bug 431232
Xen BUG at io_apic.c:127
Last modified: 2010-11-09 08:34:34 EST
Description of problem:
During some reboots, the OS fails to boot with a bug at io_api,c:127
Version-Release number of selected component (if applicable):
This is an Intel S5000PSL board with two Quad-Core E5345 CPUs, 16GB of RAM and a
Seagate 250GB SATA disk.
Not reproducible. When the problem happens though, the only workaround has been
to boot a non-xen kernel (like PXE boot and start a kernel off the net)
Steps to Reproduce:
1. Cannot reproduce. many reboots may be needed
Created attachment 293748 [details]
serial output of XEN bug
Created attachment 293749 [details]
Good boot on same machine
This is a good boot from the same machine in case a reference point is
Yes, I've seen this from time-to-time as well, although I've never been able to
reproduce it either. It hits the BUG() in io_apic.c:127 basically when it
thinks we are trying to remove a irq_2_pin mapping that wasn't added in the
first place. I don't have much more than this at the moment.
I'm sorry nobody has looked at this in a while. Is this still a problem with recent RHEL-5.4 Xen? I haven't seen it in over a year myself, so I'm just wondering if you still see the problem.
No response in over a month, and I haven't seen this myself in a long time. I'm going to close this as CURRENTRELEASE for now; if it pops back up, feel free to re-open.
Clearing out old flags for reporting purposes.