I just saw this kernel panic. I''ve been running Xen for over a year,
and
this particular combination of software for a couple weeks. I''ve never
seen
a kernel panic under Xen before (I know, knock on wood...) so I thought it
might be worthwhile to report.
Setup...
Xen 3.0.4 hypervisor, locally compiled, PAE enabled
dom0 is Ubuntu Edgy, 2.6.16.33-xen0, locally compiled, PAE enabled
domU is CentOS 3.8, 2.4.21-47.EL.xs10xenU/i686, from Xen package
Panic text from console...
Unable to handle kernel paging request at virtual address e332c000
printing eip:
c01ab365
*pde = ma 00000000 pa fffff000
Oops: 0003
nfs lockd sunrpc ext3 jbd
CPU: 1
EIP: 0061:[<c01ab365>] Not tainted
EFLAGS: 00010206
EIP is at _arch_exit_mmap [kernel] 0x2f5 (2.4.21-47.EL.xs10xenU/i686)
eax: 00000000 ebx: 00000000 ecx: 00000400 edx: e332c000
esi: a4fc5001 edi: e332c000 ebp: 00000001 esp: c1f6bec8
ds: 0068 es: 0068 ss: 0068
Process bash (pid: 15427, stackpage=c1f6b000)
Stack: e332c000 00000000 c01a9eed e332c000 00000000 00001000 e40a0008 c02f3d60
c1f6a000 cf729a60 e40a0000 eb8dbbe0 d5b6b380 cd090000 eb8dbbe0 c010e13a
eb8dbbe0 00000000 00000020 00000000 c010e417 eb8dbbe0 d5b6b380 000000f8
Call Trace: [<c01a9eed>] pgd_alloc [kernel] 0x7d (0xc1f6bed0)
[<c010e13a>] mm_init [kernel] 0xaa (0xc1f6bf04)
[<c010e417>] copy_mm [kernel] 0xc7 (0xc1f6bf18)
[<c010ee66>] copy_process [kernel] 0x4d6 (0xc1f6bf3c)
[<c010f64e>] do_fork [kernel] 0x4e (0xc1f6bf6c)
[<c019ac37>] sys_fork [kernel] 0x37 (0xc1f6bfa4)
Code: f3 ab eb a7 8d b4 26 00 00 00 00 c1 e9 02 89 d7 f3 ab aa eb
Kernel panic: Fatal exception
--
To use violence is to already be defeated.
-- Chinese proverb
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I have no oops, but very strange problems with NFS mounting and locking. Maybe either in XEN or in the NFS there''s an odd bug that triggers rarely. My guess... Could it be in your case that you are out of memory? Ulrich On 6 Feb 2007 at 10:18, Tom Marshall wrote:> I just saw this kernel panic. I''ve been running Xen for over a year, and > this particular combination of software for a couple weeks. I''ve never seen > a kernel panic under Xen before (I know, knock on wood...) so I thought it > might be worthwhile to report. > > Setup... > > Xen 3.0.4 hypervisor, locally compiled, PAE enabled > dom0 is Ubuntu Edgy, 2.6.16.33-xen0, locally compiled, PAE enabled > domU is CentOS 3.8, 2.4.21-47.EL.xs10xenU/i686, from Xen package > > Panic text from console... > > Unable to handle kernel paging request at virtual address e332c000 > printing eip: > c01ab365 > *pde = ma 00000000 pa fffff000 > Oops: 0003 > nfs lockd sunrpc ext3 jbd > CPU: 1 > EIP: 0061:[<c01ab365>] Not tainted > EFLAGS: 00010206 > > EIP is at _arch_exit_mmap [kernel] 0x2f5 (2.4.21-47.EL.xs10xenU/i686) > eax: 00000000 ebx: 00000000 ecx: 00000400 edx: e332c000 > esi: a4fc5001 edi: e332c000 ebp: 00000001 esp: c1f6bec8 > ds: 0068 es: 0068 ss: 0068 > Process bash (pid: 15427, stackpage=c1f6b000) > Stack: e332c000 00000000 c01a9eed e332c000 00000000 00001000 e40a0008 c02f3d60 > c1f6a000 cf729a60 e40a0000 eb8dbbe0 d5b6b380 cd090000 eb8dbbe0 c010e13a > eb8dbbe0 00000000 00000020 00000000 c010e417 eb8dbbe0 d5b6b380 000000f8 > Call Trace: [<c01a9eed>] pgd_alloc [kernel] 0x7d (0xc1f6bed0) > [<c010e13a>] mm_init [kernel] 0xaa (0xc1f6bf04) > [<c010e417>] copy_mm [kernel] 0xc7 (0xc1f6bf18) > [<c010ee66>] copy_process [kernel] 0x4d6 (0xc1f6bf3c) > [<c010f64e>] do_fork [kernel] 0x4e (0xc1f6bf6c) > [<c019ac37>] sys_fork [kernel] 0x37 (0xc1f6bfa4) > > Code: f3 ab eb a7 8d b4 26 00 00 00 00 c1 e9 02 89 d7 f3 ab aa eb > > Kernel panic: Fatal exception > > -- > To use violence is to already be defeated. > -- Chinese proverb > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, Feb 07, 2007 at 08:02:15AM +0100, Ulrich Windl wrote:> I have no oops, but very strange problems with NFS mounting and locking. Maybe > either in XEN or in the NFS there''s an odd bug that triggers rarely. My guess...I do have NFS mounts on the domU machine, but only for shared LAN resources (eg. not /usr or anything OS related).> Could it be in your case that you are out of memory?Yes, that is possible. The issue is not necessarily Xen related. I just figured I''d toss the panic info out to the list since the machine has been so stable and the kernel is a binary image from xensource. If I see another issue, I''ll get more serious about trying to track it down. Thx! -- "Outlook not so good." That magic 8-ball knows everything! I''ll ask about Exchange Server next. -- Anonymous comment _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
My domU died twice today (centos 3.8 using kernel 2.4.21-47.EL.xs10xenU from
xensource). The first time it hung and I got just the top couple lines from
an oops on the console. It looked similar but not identical to the previous
report. The domU has previously been running with 1024M and no swap, so I
added 512M of swap to the machine in hopes that would cure the issue. No
such luck, the second time it restarted itself. Both times I was using the
machine to compile some code (RPM packages) and edit a file. The second
time, I lost a couple hours of editing, as I''m not used to my Linux
machines
spontaneously rebooting. :/
If anyone has any idea what is wrong, and especially how to fix it, I would
be most grateful. If not, I''ll just consider 2.4.21-47.EL.xs10xenU
unusable
and go back to the (hopefully) stable 2.6.16.33-xenU kernel.
TIA
--
Do not be quick with your mouth, do not be hasty in your heart to utter
anything before God. God is heaven and you are on earth, so let your words
be few.
-- Ecclesiastes 5:2
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