Public bug reported:
Binary package hint: lvm2
Ubuntu Release: 7.10
Kernel: Linux erebus 2.6.22-14-xen #1 SMP Tue Feb 12 04:26:15 UTC 2008 x86_64
GNU/Linux
lvm2 version: 2.02.26-1ubuntu4
Our nightly backup script uses lvm snapshots to get a consistent image
of some Xen domU filesystems.
It does a:
for DOMAIN in $1; do
lvcreate -L 10G -s -n ${DOMAIN}-disk-backup ${RAID}/${DOMAIN}-disk
sleep 1
done
loop to create the snapshots. Tonight, one lvcreate command triggered a
kernel Oops:
Apr 24 01:00:27 erebus kernel: [1091983.189778] Unable to handle kernel NULL
pointer dereference at 0000000000000030 RIP:
Apr 24 01:00:27 erebus kernel: [1091983.189808] [_end+127606402/2130180472]
:dm_mod:__map_bio+0x3a/0x120
Apr 24 01:00:27 erebus kernel: [1091983.189898] PGD 268d0067 PUD 29a75067 PMD 0
Apr 24 01:00:27 erebus kernel: [1091983.189952] Oops: 0000 [1] SMP
Apr 24 01:00:27 erebus kernel: [1091983.189986] CPU 0
Apr 24 01:00:27 erebus kernel: [1091983.190014] Modules linked in: ext3 jbd
xt_tcpudp xt_physdev iptable_filter ipt_MASQUERADE iptable_nat nf_nat
nf_conntrack_ipv4 nf_conntrack nfnetlink ip_tables x_tables af_packet bridge
ext2 mbcache coretemp w83627hf w83793 hwmon_vid i2c_i801 i2c_core parport_pc lp
parport loop osst st xpad sr_mod cdrom ipv6 shpchp pci_hotplug serial_core
pcspkr psmouse evdev usbhid hid xfs ata_piix sg sd_mod ata_generic floppy
ehci_hcd libata uhci_hcd usbcore e1000 3w_9xxx scsi_mod dm_mirror dm_snapshot
dm_mod thermal processor fan fuse apparmor commoncap
Apr 24 01:00:27 erebus kernel: [1091983.190459] Pid: 14458, comm: lvcreate Not
tainted 2.6.22-14-xen #1
Apr 24 01:00:27 erebus kernel: [1091983.190493] RIP:
e030:[_end+127606402/2130180472] [_end+127606402/2130180472]
:dm_mod:__map_bio+0x3a/0x120
(full log with call trace attached)
One of the domUs became unresponsive, so the whole server had to be restarted.
This might be related to dm_mod which is mentioned in the kernel-oops-log.
If you need more information, let me know.
** Affects: lvm2 (Ubuntu)
Importance: Undecided
Status: New
--
Unable to handle kernel NULL pointer dereference during lvcreate
https://bugs.launchpad.net/bugs/221298
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
