Red Hat Bugzilla – Bug 307461
Firewire module crash on boot
Last modified: 2009-12-14 15:41:31 EST
Clone of F-7 bug caused by Firewire modules not being supported under the Xen
+++ This bug was initially created as a clone of Bug #302471 +++
Description of problem:
I am unable to boot a xen kernel (either 2.6.20-2925.9.fc7xen or
2.6.20-2931.fc7xen) on my quad core Intel x86_64 box. When I try the boot
with a modprobe error. Unfortunately, I do not know how to enable logging to
record this for debugging purposes (boot.log is always empty).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install the x86 FC7 image on the x86_64 box.
2. Include virtualization in the installation
3. Attempt to boot the xen image.
Boot fails with a modprobe error.
Xen enabled kernel should boot. Note that it does boot if I install x86_64
I don't know how to record this boot issue. /var/log/boot.log is always
-- Additional comment from firstname.lastname@example.org on 2007-09-24 06:56 EST --
Please boot, adding 'noreboot' to the Xen command line, then write down
the error or take a snapshot.
-- Additional comment from email@example.com on 2007-09-25 21:06 EST --
Created an attachment (id=206301)
dmesg output from xen boot
When I added the noreboot, the system eventually booted. Here is the dmesg
log. When the boot failed, it stopped after displaying line 568 (floppy0: no
floppy controllers found) and displayed a sys/modprobe error before that line.
-- Additional comment from firstname.lastname@example.org on 2007-09-25 21:30 EST --
Created an attachment (id=206311)
messages log file from fc7xen boot
Here is a bit more. I removed the noreboots and the boot hung in the same
place. I discovered that if I press the Print Screen / SysRq key, the boot
will continue. This attachment contains the messages log that contains more
information than the previous dmesg log. This contains a modprobe error at
place that I see it when the boot hangs.
-- Additional comment from email@example.com on 2007-09-26 13:19 EST --
It is being caused by the Firewire stack trying to use DMA in a way not
currently supported by the Xen kernel.
The firewire stack was supposed to be disabled on the Xen kernel. You can work
around the problem by removing the firewire modules
Firewire disabled on 2.6.21-2944.fc8, that will go to Fedora 8 Test 3.
Bug #240471 is being used for tracking the Firewire problems under kernel-xen.