Red Hat Bugzilla – Bug 246702
Kernel panic in Xen
Last modified: 2008-02-26 21:55:17 EST
Description of problem:
Version-Release number of selected component (if applicable):
I have installed RHEL 5 with virtualization and creates a virtual machine with
2GB RAM and one VCPU in virt-manager that runs RHEL 4.5. The installation goes
fine but then when i shutdown the virtual machine and start it again, i get a
The problem is that i doesnt get the error everytime i boot the machine, it
looks like it reproduces when i have several virtual machines and take them up
and down. I also had a virtual machine that got kernel panic everytime, when i
changed the amount of memory to 1GB it booted, so it looks like memory problems.
I have only used paravirtualizated machines and tested both with partition and
image file. I have run memtest on the host machine and found no errors.
hardware: HP DL380 with 2CPU:s and 12GB RAM
Steps to Reproduce:
1.Create a paravirtualizated host with virt-manager with 2GB RAM and 1 cpu
2.Install RHEL 4.5
3. boot the virtual machine
4. shutdown the virtual machine
5. change memory settings in the configurationfile to 4GB
6. boot the virtual machine
------------[ cut here ]------------
kernel BUG at arch/i386/mm/pgtable-xen.c:306!
invalid operand: 0000 [#1]
Modules linked in: dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod xenblk sd_mod
EIP: 0061:[<c011163a>] Not tainted VLI
EFLAGS: 00010282 (2.6.9-55.ELxenU)
EIP is at pgd_ctor+0x1d/0x26
eax: fffffff4 ebx: 00000000 ecx: f5392000 edx: 00000000
esi: c21a2d80 edi: ed6778e0 ebp: 00000001 esp: ec8b6de4
ds: 007b es: 007b ss: 0068
Process hotplug (pid: 340, threadinfo=ec8b6000 task=ec8b05c0)
Stack: c0141ad5 ec8d3000 c21a2d80 00000001 ec8d3000 ed6778e0 c21a2d80 c21a2e40
c0141c57 c21a2d80 ed6778e0 00000001 c21a2d80 ed6778e0 ec8d3000 00000010
00000001 000000d0 c21c9080 0000000c c21a2e08 c21a2d80 c0141e46 c21a2d80
Code: 74 02 66 a5 a8 01 74 01 a4 5e 5b 5e 5f c3 80 3d 04 f7 2e c0 00 75 1c 6a 20
6a 00 ff 74 24 0c e8 ce 37 00 00 83 c4 0c 85 c0 74 08 <0f> 0b 32 01 2f 2b 27 c0
c3 80 3d 04 f7 2e c0 00 75 0d c7 44 24
<0>Fatal exception: panic in 5 seconds
see more in attachment
the machine boots
The second time you boot the machine with more memory, the machine works.
Created attachment 158501 [details]
whole kernel panic
This is against the wrong component; the problem here is really that the RHEL-4
PV guest kernel was crashing. However, that bug was solved in 4.6 by BZ 233543.
Closing as a dup; if you continue to experience problems, please re-open.
*** This bug has been marked as a duplicate of 233543 ***