https://bugzilla.novell.com/show_bug.cgi?id=653788
https://bugzilla.novell.com/show_bug.cgi?id=653788#c5
--- Comment #5 from Carlos Costa e Silva 2010-12-03 19:11:59 WET ---
Worse, tuesday tried a save and restore of the 11.2 x86 domU.
xm restore: failed. xm list showed the domU as started with 0 time.
xm destroy: ok
xm start: said domU started.
xm list: hanged.
A backup task [a shell script] that was running at the same time: stalled with
100% cpu in chmod on the same disk the vm disk was located.
Found a kernel BUG message in /var/log/messages and had to push the reset
button on the dom0. As this is a production machine, can't do too many tests
ending with pushing the reset button :)
Dec 1 04:14:08 zeus kernel: [542982.653504] BUG: soft lockup - CPU#3 stuck for
61s! [chown:2557]
Dec 1 04:14:08 zeus kernel: [542982.653504] Modules linked in: nls_utf8 cifs
ip6t_LOG xt_tcpudp xt_pkttype xt_physdev ipt_LOG xt_limit tun af_packet usbbk
gntdev netbk blkbk blkback_pagemap blktap domctl xenbus_be evtchn raw coretemp
bridge stp llc bonding ip6t_REJECT nf_conntrack_ipv6 ip6table_raw xt_NOTRACK
ipt_REJECT xt_state iptable_raw iptable_filter ip6table_mangle
nf_conntrack_netbios_ns nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables
ip6table_filter ip6_tables x_tables loop dm_mod i2c_i801 8250_pnp iTCO_wdt
i3200_edac 8250 iTCO_vendor_support e1000 floppy pcspkr r8169 sr_mod sg
i2c_core serial_core edac_core button ext4 jbd2 crc16 usbhid hid raid456
async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid10
raid0 uhci_hcd ehci_hcd sd_mod usbcore xenblk cdrom xennet edd raid1 fan ahci
libata scsi_mod thermal processor thermal_sys hwmon
Dec 1 04:14:08 zeus kernel: [542982.653504] CPU 3
Dec 1 04:14:08 zeus kernel: [542982.653504] Modules linked in: nls_utf8 cifs
ip6t_LOG xt_tcpudp xt_pkttype xt_physdev ipt_LOG xt_limit tun af_packet usbbk
gntdev netbk blkbk blkback_pagemap blktap domctl xenbus_be evtchn raw coretemp
bridge stp llc bonding ip6t_REJECT nf_conntrack_ipv6 ip6table_raw xt_NOTRACK
ipt_REJECT xt_state iptable_raw iptable_filter ip6table_mangle
nf_conntrack_netbios_ns nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables
ip6table_filter ip6_tables x_tables loop dm_mod i2c_i801 8250_pnp iTCO_wdt
i3200_edac 8250 iTCO_vendor_support e1000 floppy pcspkr r8169 sr_mod sg
i2c_core serial_core edac_core button ext4 jbd2 crc16 usbhid hid raid456
async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid10
raid0 uhci_hcd ehci_hcd sd_mod usbcore xenblk cdrom xennet edd raid1 fan ahci
libata scsi_mod thermal processor thermal_sys hwmon
Dec 1 04:14:08 zeus kernel: [542982.653504]
Dec 1 04:14:08 zeus kernel: [542982.653504] Pid: 2557, comm: chown Tainted: G
W 2.6.34.7-0.5-xen #1 S3210SH/S3210SH
Dec 1 04:14:08 zeus kernel: [542982.653504] RIP: e030:[<ffffffff800794d2>]
[<ffffffff800794d2>] smp_call_function_many+0x1b2/0x230
Dec 1 04:14:08 zeus kernel: [542982.653504] RSP: e02b:ffff8800908dfde8
EFLAGS: 00000202
Dec 1 04:14:08 zeus kernel: [542982.653504] RAX: ffff88000204a7c0 RBX:
ffff88000204f680 RCX: 0000000000000000
Dec 1 04:14:08 zeus kernel: [542982.653504] RDX: ffff880002044000 RSI:
0000000000000200 RDI: 0000000000000000
Dec 1 04:14:08 zeus kernel: [542982.653504] RBP: 0000000000000003 R08:
ffff88000204f6f0 R09: 0000000000000200
Dec 1 04:14:08 zeus kernel: [542982.653504] R10: 0000000000007ff0 R11:
0000000000000246 R12: ffffffff80751100
Dec 1 04:14:08 zeus kernel: [542982.653504] R13: ffff880021f17e80 R14:
ffff88000204f6b0 R15: ffff880021f17bc0
Dec 1 04:14:08 zeus kernel: [542982.653504] FS: 00007f3ebe3ff700(0000)
GS:ffff880002044000(0000) knlGS:0000000000000000
Dec 1 04:14:08 zeus kernel: [542982.653504] CS: e033 DS: 0000 ES: 0000 CR0:
0000000080050033
Dec 1 04:14:08 zeus kernel: [542982.653504] CR2: 00007f3ebdf595b0 CR3:
00000000007b7000 CR4: 0000000000002660
Dec 1 04:14:08 zeus kernel: [542982.653504] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Dec 1 04:14:08 zeus kernel: [542982.653504] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Dec 1 04:14:08 zeus kernel: [542982.653504] Process chown (pid: 2557,
threadinfo ffff8800908de000, task ffff88015e69e1c0)
Dec 1 04:14:08 zeus kernel: [542982.653504] Stack:
Dec 1 04:14:08 zeus kernel: [542982.653504] ffff8801df4ac138 01ffffff800ea0ca
0000000000000000 ffff880021f17bc0
Dec 1 04:14:08 zeus kernel: [542982.653504] <0> ffff88015e69e1c0
ffff88015e69e7ec ffff880021f17c20 000000000000002a
Dec 1 04:14:09 zeus kernel: [542982.653504] <0> ffff8801df430800
ffffffff800242f4 0000000000000000 ffff880021f17bc0
Dec 1 04:14:09 zeus kernel: [542982.653504] Call Trace:
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800242f4>]
arch_exit_mmap+0x44/0xa0
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800f5e98>]
exit_mmap+0x38/0x1c0
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800414c5>]
mmput+0x25/0x100
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800481c9>]
exit_mm+0x109/0x130
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80048325>]
do_exit+0x135/0x3a0
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80048755>]
do_group_exit+0x55/0x110
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80048822>]
sys_exit_group+0x12/0x20
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80007438>]
system_call_fastpath+0x16/0x1b
Dec 1 04:14:09 zeus kernel: [542982.653504] [<00007f3ebdf595e8>]
0x7f3ebdf595e8
Dec 1 04:14:09 zeus kernel: [542982.653504] Code: 00 e8 83 52 39 00 0f ae f0
4c 89 f7 e8 b8 f2 f9 ff 80 7c 24 0f 00 0f 84 d4 fe ff ff f6 43 20 01 0f 84 ca
fe ff ff 0f 1f 00 f3 90 <f6> 43 20 01 75 f8 e9 ba fe ff ff 0f 1f 00 4c 89 e2 4c
89 ee 89
Dec 1 04:14:09 zeus kernel: [542982.653504] Call Trace:
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800242f4>]
arch_exit_mmap+0x44/0xa0
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800f5e98>]
exit_mmap+0x38/0x1c0
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800414c5>]
mmput+0x25/0x100
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff800481c9>]
exit_mm+0x109/0x130
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80048325>]
do_exit+0x135/0x3a0
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80048755>]
do_group_exit+0x55/0x110
Dec 1 04:14:09 zeus kernel: [542982.653504] [<ffffffff80048822>]
sys_exit_group+0x12/0x20
Dec 1 04:14:10 zeus kernel: [542982.653504] [<ffffffff80007438>]
system_call_fastpath+0x16/0x1b
Dec 1 04:14:10 zeus kernel: [542982.653504] [<00007f3ebdf595e8>]
0x7f3ebdf595e8
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