fedora 9 guest kernel panic

[Andriy Gapon]

We have FC6 Dom0 and recently upgraded one of DomUs to Fedora 9.
After that we started to get seemingly random panics for that DomU.
Below is some info about that.
Any ideas of what might be wrong?
Any suggestions on fixing?

Kernel BUG at ffffffff80465fc0 [verbose debug info unavailable]
invalid opcode: 0000 [1]
CPU 0
Modules linked in: nfs nfsd lockd nfs_acl auth_rpcgss exportfs autofs4
fuse sunrpc ipv6 dm_multipath pcspkr xen_netfront dm_snapshot dm_zero
dm_mirror dm_mod xen_blkfront ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd
Pid: 1353, comm: automount Not tainted 2.6.25-2.fc9.x86_64.xen #1
RIP: e030:[<ffffffff80465fc0>]  [<ffffffff80465fc0>]
xen_failsafe_callback+0x0/0x10
RSP: e02b:ffff880007375e00  EFLAGS: 00010012
RAX: 000000000000000d RBX: ffff88000a9c2000 RCX: ffffffff80465fc0
RDX: ffffffff80627210 RSI: 0000000000000001 RDI: ffffffff80627350
RBP: ffff880007375ea0 R08: ffffffff8063d730 R09: 0000000000000000
R10: 0000003401024b21 R11: 0000000000000212 R12: ffff88001f442000
R13: ffff88000a9c2470 R14: 0000000000000000 R15: ffff88001f429c78
FS:  0000000000000000(0000) GS:ffffffff805bf000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f9409bd1780 CR3: 000000001dd9e000 CR4: 0000000000000660
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000000
Process automount (pid: 1353, threadinfo ffff88001f428000, task
ffff88001f442000)
Stack:  ffffffff806171aa 0000000000000212 0000000000000000 0000000000000000
 0000000000000063 0000000000000000 ffffffff806171a8 000000010000e030
 0000000000000012 ffff880007375e58 000000000000e02b 0000000000000000
Call Trace:

Code: 0f 07 66 0f 1f 84 00 00 00 00 00 48 8b 0c 24 4c 8b 5c 24 08 48 83
c4 10 6a 00 50 48 8d 05 19 00 00 00 e9 54 fb ff ff 0f 1f 40 00 <0f> 0b
66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 89 fc 65 ff
RIP  [<ffffffff80465fc0>] xen_failsafe_callback+0x0/0x10
 RSP <ffff880007375e00>
---[ end trace ffae49894bdd5d90 ]---
BUG: soft lockup - CPU#0 stuck for 61s! [automount:1353]
CPU 0:
Modules linked in: nfs nfsd lockd nfs_acl auth_rpcgss exportfs autofs4
fuse sunrpc ipv6 dm_multipath pcspkr xen_netfront dm_snapshot dm_zero
dm_mirror dm_mod xen_blkfront ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd
Pid: 1353, comm: automount Tainted: G      D  2.6.25-2.fc9.x86_64.xen #1
RIP: e030:[<ffffffff8030f4d0>]  [<ffffffff8030f4d0>] __get_user_8+0x20/0x2c
RSP: e02b:ffff880007375b50  EFLAGS: 00010206
RAX: ffffffffff516000 RBX: 0000000000000000 RCX: 000000004054e9f0
RDX: 0000000000002600 RSI: 0000000000000000 RDI: ffff88001f442000
RBP: ffff880007375ba8 R08: ffff88001f428000 R09: ffff880001760300
R10: 0000000000000006 R11: 3462646435643930 R12: ffff88001f442000
R13: 000000004054e9f0 R14: 0000000000000000 R15: ffff88001f442000
FS:  0000000000000000(0000) GS:ffffffff805bf000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 000000004054e9f0 CR3: 000000001dd9e000 CR4: 0000000000000660
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000000

[Mark McLoughlin]

Hi,

On Mon, 2008-05-26 at 15:27 +0300, Andriy Gapon wrote:
> We have FC6 Dom0 and recently upgraded one of DomUs to Fedora 9.
> After that we started to get seemingly random panics for that DomU.

...
> Code: 0f 07 66 0f 1f 84 00 00 00 00 00 48 8b 0c 24 4c 8b 5c 24 08 48 83
> c4 10 6a 00 50 48 8d 05 19 00 00 00 e9 54 fb ff ff 0f 1f 40 00 <0f> 0b
> 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 89 fc 65 ff
> RIP  [<ffffffff80465fc0>] xen_failsafe_callback+0x0/0x10

See:

https://bugzilla.redhat.com/show_bug.cgi?id=442949

Try updating to kernel-xen-2.6-2.6.25.3-1:

https://admin.fedoraproject.org/updates/F9/FEDORA-2008-3980

Cheers,
Mark.

[Andriy Gapon]

on 26/05/2008 18:36 Mark McLoughlin said the following:
> Hi,
>
> On Mon, 2008-05-26 at 15:27 +0300, Andriy Gapon wrote:
> > We have FC6 Dom0 and recently upgraded one of DomUs to Fedora 9.
> > After that we started to get seemingly random panics for that DomU.
>
> ...
> > Code: 0f 07 66 0f 1f 84 00 00 00 00 00 48 8b 0c 24 4c 8b 5c 24 08 48 83
> > c4 10 6a 00 50 48 8d 05 19 00 00 00 e9 54 fb ff ff 0f 1f 40 00 <0f> 0b
> > 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 89 fc 65 ff
> > RIP  [<ffffffff80465fc0>] xen_failsafe_callback+0x0/0x10
>
> See:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=442949
>
> Try updating to kernel-xen-2.6-2.6.25.3-1:
>
> https://admin.fedoraproject.org/updates/F9/FEDORA-2008-3980

Thank you very much!
I have not seen any panics after the upgrade. I've been running for 3+
hours by now. Previously the system would panic within first 15 minutes
after boot up.