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[Xen-users] Xen oopses when starting a guest domain

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen oopses when starting a guest domain
From: Tomasz Chmielewski <mangoo@xxxxxxxx>
Date: Mon, 04 Sep 2006 13:58:03 +0200
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I have a Xen 3.0.2 server that was running without any problems.

Today, I began to stop all domains manually, and rebooted the server:

# xm shutdown one
# xm shutdown two
# xm shutdown three
# reboot

After reboot, when I start any domain, I see oopses, and I've no idea why that happens,and how to fix it (the domain start, but I can't connect to it):

Unable to handle kernel paging request at virtual address c7821000
 printing eip:
*pde = ma 0181c067 pa 0001c067
*pte = ma 37053061 pa 10461061
Oops: 0003 [#1]
Modules linked in: bridge ipv6 iscsi_tcp libiscsi scsi_transport_iscsi tg3 bonding loop hw_random video thermal processor fan container button battery ac tsdev ext3 jbd sd_mod ahci ata_piix libata scsi_mod raid1 md_mod
CPU:    0
EIP:    0061:[<c0322fcc>]    Not tainted VLI
EFLAGS: 00010246   (2.6.16-xen #6)
EIP is at iret_exc+0x500/0x71e
eax: 00000000   ebx: 00000030   ecx: 00000030   edx: c5bbee74
esi: c5bbee44   edi: c7821000   ebp: c5bbee44   esp: c5907c84
ds: 007b   es: 007b   ss: 0069
Process scsi_wq_6 (pid: 2320, threadinfo=c5906000 task=c1248030)
Stack: <0>00000000 00000030 c6ac6980 c49b9680 c02dc2dd c7821000 c5bbee44 00000030 c90ccc20 c649c280 c49b9a24 00000000 00000001 c5907e44 00000000 00008000 000005b4 000005b4 00000000 00000030 c5bbee44 c63b9a68 c56434f8 c02d4918
Call Trace:
 [<c02dc2dd>] tcp_sendmsg+0x65d/0xbb0
 [<c90ccc20>] bond_xmit_roundrobin+0x100/0x120 [bonding]
 [<c02d4918>] ip_output+0x1c8/0x330
 [<c02d3fe0>] ip_finish_output+0x0/0x2a0
 [<c02a268a>] sock_sendmsg+0xca/0x100
 [<c0135750>] autoremove_wake_function+0x0/0x60
 [<c02e49f4>] tcp_transmit_skb+0x404/0x770
 [<c02a2706>] kernel_sendmsg+0x46/0x60
 [<c02a44e2>] sock_no_sendpage+0x82/0xa0
 [<c9243e4f>] iscsi_tcp_ctask_xmit+0x1ef/0x1a90 [iscsi_tcp]
 [<c01052cc>] hypervisor_callback+0x2c/0x34
 [<c0320ca8>] schedule+0x3d8/0x850
 [<c01317f2>] worker_thread+0x142/0x150
 [<c921ad56>] iscsi_xmitworker+0x156/0x2d0 [libiscsi]
 [<c0131529>] run_workqueue+0x79/0xf0
 [<c012b782>] do_sigaction+0x1f2/0x2a0
 [<c921ac00>] iscsi_xmitworker+0x0/0x2d0 [libiscsi]
 [<c01317c2>] worker_thread+0x112/0x150
 [<c0119e90>] default_wake_function+0x0/0x20
 [<c013553f>] kthread+0xff/0x110
 [<c01316b0>] worker_thread+0x0/0x150
 [<c0135440>] kthread+0x0/0x110
 [<c0102ca5>] kernel_thread_helper+0x5/0x10
Code: 5c 24 24 c7 03 f2 ff ff ff e9 71 d4 eb ff ba f2 ff ff ff e9 4e d7 eb ff 8d 0c 8a e9 78 d7 eb ff 01 c1 eb 03 8d 0c 88 51 50 31 c0 <f3> aa 58 59 e9 a5 d7 eb ff ba f2 ff ff ff e9 79 d8 eb ff 8d 0c

Starting another domain ends with a kernel panic.

Tomasz Chmielewski

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