Bug#554564: linux-image-2.6.26-2-xen-amd64: WARNINGs with AoE-backed Xen guest
Package: linux-image-2.6.26-2-xen-amd64
Version: 2.6.26-19lenny1
Severity: normal
Hi,
After I tried to fire up a Xen guest that has its disk reside on AoE
devices, I started to get the following messages continuously in the
dom0. The messages stop only if I shut down this specific guest. Other
guests that have their disks on local devices work fine.
Nov 5 13:09:07 seras kernel: [ 167.060767] ------------[ cut here ]------------
Nov 5 13:09:07 seras kernel: [ 167.060767] WARNING: at lib/kref.c:43 kref_get+0x1a/0x1f()
Nov 5 13:09:07 seras kernel: [ 167.060767] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:07 seras kernel: [ 167.065361] Pid: 7375, comm: blkback.9.xvda1 Not tainted 2.6.26-2-xen-amd64 #1
Nov 5 13:09:07 seras kernel: [ 167.065361]
Nov 5 13:09:07 seras kernel: [ 167.065361] Call Trace:
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff80287295>] kmem_cache_alloc+0x5f/0xb3
Nov 5 13:09:07 seras kernel: [ 167.068767] blkback: ring-ref 9, event-channel 8, protocol 1 (x86_64-abi)
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff80266b2b>] mempool_alloc+0x24/0xda
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff80222f27>] __dequeue_entity+0x25/0x69
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff802afa99>] bio_alloc_bioset+0x89/0xd9
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff8030fac8>] kref_get+0x1a/0x1f
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff8030edb7>] kobject_get+0x12/0x17
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff80386f28>] dispatch_rw_block_io+0x591/0x65d
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff8020a482>] __switch_to+0x382/0x624
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff802231cc>] enqueue_entity+0x68/0x8a
Nov 5 13:09:07 seras kernel: [ 167.065361] [<ffffffff8020a4ee>] __switch_to+0x3ee/0x624
Nov 5 13:09:07 seras kernel: [ 167.068773] [<ffffffff80229d82>] check_preempt_wakeup+0xc4/0xef
Nov 5 13:09:07 seras kernel: [ 167.072088] [<ffffffff80224d35>] try_to_wake_up+0x118/0x129
Nov 5 13:09:07 seras kernel: [ 167.072088] [<ffffffff8022320f>] enqueue_task_fair+0x21/0x33
Nov 5 13:09:07 seras kernel: [ 167.072223] [<ffffffff8030dde1>] __next_cpu+0x19/0x26
Nov 5 13:09:07 seras kernel: [ 167.072351] [<ffffffff802224b2>] find_busiest_group+0x218/0x549
Nov 5 13:09:07 seras kernel: [ 167.072492] [<ffffffff80387443>] blkif_schedule+0x3c7/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.072629] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.072760] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:07 seras kernel: [ 167.074238] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:07 seras kernel: [ 167.074371] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:07 seras kernel: [ 167.076730] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:07 seras kernel: [ 167.076860] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:07 seras kernel: [ 167.076988]
Nov 5 13:09:07 seras kernel: [ 167.077100] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:07 seras kernel: [ 167.077329] kobject: '<NULL>' (ffff88001f2d12b0): is not initialized, yet kobject_put() is being called.
Nov 5 13:09:07 seras kernel: [ 167.077501] ------------[ cut here ]------------
Nov 5 13:09:07 seras kernel: [ 167.077625] WARNING: at lib/kobject.c:583 kobject_put+0x34/0x47()
Nov 5 13:09:07 seras kernel: [ 167.077754] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:07 seras kernel: [ 167.083400] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:07 seras kernel: [ 167.083566]
Nov 5 13:09:07 seras kernel: [ 167.083567] Call Trace:
Nov 5 13:09:07 seras kernel: [ 167.083841] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:07 seras kernel: [ 167.083975] [<ffffffff8022d6da>] printk+0x4e/0x56
Nov 5 13:09:07 seras kernel: [ 167.084110] [<ffffffff8030ec9a>] kobject_put+0x34/0x47
Nov 5 13:09:07 seras kernel: [ 167.084235] [<ffffffff8038698d>] unplug_queue+0x2b/0x35
Nov 5 13:09:07 seras kernel: [ 167.084364] [<ffffffff80387482>] blkif_schedule+0x406/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.084497] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.084623] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:07 seras kernel: [ 167.084751] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:07 seras kernel: [ 167.084879] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:07 seras kernel: [ 167.085011] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:07 seras kernel: [ 167.085136] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:07 seras kernel: [ 167.085266]
Nov 5 13:09:07 seras kernel: [ 167.085373] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:07 seras kernel: [ 167.088500] blkback: ring-ref 10, event-channel 9, protocol 1 (x86_64-abi)
Nov 5 13:09:07 seras kernel: [ 167.101276] ------------[ cut here ]------------
Nov 5 13:09:07 seras kernel: [ 167.101276] WARNING: at lib/kref.c:43 kref_get+0x1a/0x1f()
Nov 5 13:09:07 seras kernel: [ 167.101276] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:07 seras kernel: [ 167.106581] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:07 seras kernel: [ 167.106581]
Nov 5 13:09:07 seras kernel: [ 167.106581] Call Trace:
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff80287295>] kmem_cache_alloc+0x5f/0xb3
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff80266b2b>] mempool_alloc+0x24/0xda
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff802afa99>] bio_alloc_bioset+0x89/0xd9
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff8030fac8>] kref_get+0x1a/0x1f
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff8030edb7>] kobject_get+0x12/0x17
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff80386f28>] dispatch_rw_block_io+0x591/0x65d
Nov 5 13:09:07 seras kernel: [ 167.106581] [<ffffffff8030dde1>] __next_cpu+0x19/0x26
Nov 5 13:09:07 seras kernel: [ 167.106586] [<ffffffff802224b2>] find_busiest_group+0x218/0x549
Nov 5 13:09:07 seras kernel: [ 167.107757] [<ffffffff80434d1b>] thread_return+0x3e/0xdb
Nov 5 13:09:07 seras kernel: [ 167.107891] [<ffffffff80387443>] blkif_schedule+0x3c7/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.108029] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.108157] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:07 seras kernel: [ 167.108283] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:07 seras kernel: [ 167.108410] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:07 seras kernel: [ 167.108540] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:07 seras kernel: [ 167.108661] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:07 seras kernel: [ 167.108784]
Nov 5 13:09:07 seras kernel: [ 167.108917] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:07 seras kernel: [ 167.109136] kobject: '<NULL>' (ffff88001f2d12b0): is not initialized, yet kobject_put() is being called.
Nov 5 13:09:07 seras kernel: [ 167.109299] ------------[ cut here ]------------
Nov 5 13:09:07 seras kernel: [ 167.109415] WARNING: at lib/kobject.c:583 kobject_put+0x34/0x47()
Nov 5 13:09:07 seras kernel: [ 167.109540] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:07 seras kernel: [ 167.115336] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:07 seras kernel: [ 167.115336]
Nov 5 13:09:07 seras kernel: [ 167.115336] Call Trace:
Nov 5 13:09:07 seras kernel: [ 167.115336] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:07 seras kernel: [ 167.115336] [<ffffffff8022d6da>] printk+0x4e/0x56
Nov 5 13:09:07 seras kernel: [ 167.115336] [<ffffffff8030ec9a>] kobject_put+0x34/0x47
Nov 5 13:09:07 seras kernel: [ 167.115340] [<ffffffff8038698d>] unplug_queue+0x2b/0x35
Nov 5 13:09:07 seras kernel: [ 167.116078] [<ffffffff80387482>] blkif_schedule+0x406/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.116215] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:07 seras kernel: [ 167.116347] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:07 seras kernel: [ 167.116473] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:07 seras kernel: [ 167.116598] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:07 seras kernel: [ 167.116725] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:07 seras kernel: [ 167.116847] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:07 seras kernel: [ 167.116969]
Nov 5 13:09:07 seras kernel: [ 167.117076] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:08 seras kernel: [ 167.279766] ------------[ cut here ]------------
Nov 5 13:09:08 seras kernel: [ 167.279907] WARNING: at lib/kref.c:43 kref_get+0x1a/0x1f()
Nov 5 13:09:08 seras kernel: [ 167.283735] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:08 seras kernel: [ 167.290018] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:08 seras kernel: [ 167.290018]
Nov 5 13:09:08 seras kernel: [ 167.290018] Call Trace:
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff80328cc7>] vgacon_scroll+0x1a2/0x1c2
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff80328cc7>] vgacon_scroll+0x1a2/0x1c2
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff80266b2b>] mempool_alloc+0x24/0xda
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff802afa99>] bio_alloc_bioset+0x89/0xd9
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff8030fac8>] kref_get+0x1a/0x1f
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff8030edb7>] kobject_get+0x12/0x17
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff80386f28>] dispatch_rw_block_io+0x591/0x65d
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff8022d621>] vprintk+0x2df/0x34a
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff8022d6da>] printk+0x4e/0x56
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff8030dde1>] __next_cpu+0x19/0x26
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff802224b2>] find_busiest_group+0x218/0x549
Nov 5 13:09:08 seras kernel: [ 167.290018] [<ffffffff80434d1b>] thread_return+0x3e/0xdb
Nov 5 13:09:08 seras kernel: [ 167.290051] [<ffffffff80387443>] blkif_schedule+0x3c7/0x4dc
Nov 5 13:09:08 seras kernel: [ 167.298051] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:08 seras kernel: [ 167.309136] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:08 seras kernel: [ 167.318481] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:08 seras kernel: [ 167.326785] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:08 seras kernel: [ 167.338301] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:08 seras kernel: [ 167.349392] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:08 seras kernel: [ 167.360907]
Nov 5 13:09:08 seras kernel: [ 167.371998] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:08 seras kernel: [ 167.375128] kobject: '<NULL>' (ffff88001f2d12b0): is not initialized, yet kobject_put() is being called.
Nov 5 13:09:08 seras kernel: [ 167.383462] ------------[ cut here ]------------
Nov 5 13:09:08 seras kernel: [ 167.405960] WARNING: at lib/kobject.c:583 kobject_put+0x34/0x47()
Nov 5 13:09:08 seras kernel: [ 167.417393] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:08 seras kernel: [ 167.535383] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:08 seras kernel: [ 167.539381]
Nov 5 13:09:08 seras kernel: [ 167.539382] Call Trace:
Nov 5 13:09:08 seras kernel: [ 167.573294] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:08 seras kernel: [ 167.581293] [<ffffffff8022d6da>] printk+0x4e/0x56
Nov 5 13:09:08 seras kernel: [ 167.600681] [<ffffffff8030ec9a>] kobject_put+0x34/0x47
Nov 5 13:09:08 seras kernel: [ 167.615780] [<ffffffff8038698d>] unplug_queue+0x2b/0x35
Nov 5 13:09:08 seras kernel: [ 167.624649] [<ffffffff80387482>] blkif_schedule+0x406/0x4dc
Nov 5 13:09:08 seras kernel: [ 167.635752] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:08 seras kernel: [ 167.646891] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:08 seras kernel: [ 167.662896] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:08 seras kernel: [ 167.677997] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:08 seras kernel: [ 167.689110] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:08 seras kernel: [ 167.697424] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:08 seras kernel: [ 167.708515]
Nov 5 13:09:08 seras kernel: [ 167.716823] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:13 seras kernel: [ 172.744273] ------------[ cut here ]------------
Nov 5 13:09:13 seras kernel: [ 172.744418] WARNING: at lib/kref.c:43 kref_get+0x1a/0x1f()
Nov 5 13:09:13 seras kernel: [ 172.744548] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:13 seras kernel: [ 172.758499] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:13 seras kernel: [ 172.758664]
Nov 5 13:09:13 seras kernel: [ 172.758665] Call Trace:
Nov 5 13:09:13 seras kernel: [ 172.758895] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:13 seras kernel: [ 172.759029] [<ffffffff802231cc>] enqueue_entity+0x68/0x8a
Nov 5 13:09:13 seras kernel: [ 172.759161] [<ffffffff802166ca>] xen_send_IPI_mask+0x0/0xc6
Nov 5 13:09:13 seras kernel: [ 172.759294] [<ffffffff80266b2b>] mempool_alloc+0x24/0xda
Nov 5 13:09:13 seras kernel: [ 172.759421] [<ffffffff80224d35>] try_to_wake_up+0x118/0x129
Nov 5 13:09:13 seras kernel: [ 172.759549] [<ffffffff80436a87>] error_exit+0x0/0x69
Nov 5 13:09:13 seras kernel: [ 172.759675] [<ffffffff802afa99>] bio_alloc_bioset+0x89/0xd9
Nov 5 13:09:13 seras kernel: [ 172.759804] [<ffffffff8030fac8>] kref_get+0x1a/0x1f
Nov 5 13:09:13 seras kernel: [ 172.759927] [<ffffffff8030edb7>] kobject_get+0x12/0x17
Nov 5 13:09:13 seras kernel: [ 172.760053] [<ffffffff80386f28>] dispatch_rw_block_io+0x591/0x65d
Nov 5 13:09:13 seras kernel: [ 172.760184] [<ffffffff8037cee6>] force_evtchn_callback+0xa/0xb
Nov 5 13:09:13 seras kernel: [ 172.760192] [<ffffffff8022d64c>] vprintk+0x30a/0x34a
Nov 5 13:09:13 seras kernel: [ 172.760192] [<ffffffff8022d6da>] printk+0x4e/0x56
Nov 5 13:09:13 seras kernel: [ 172.760192] [<ffffffff80221dcf>] update_curr+0x44/0x6f
Nov 5 13:09:13 seras kernel: [ 172.760192] [<ffffffff80222f27>] __dequeue_entity+0x25/0x69
Nov 5 13:09:13 seras kernel: [ 172.760197] [<ffffffff80222f83>] set_next_entity+0x18/0x3a
Nov 5 13:09:13 seras kernel: [ 172.760325] [<ffffffff80434d1b>] thread_return+0x3e/0xdb
Nov 5 13:09:13 seras kernel: [ 172.760459] [<ffffffff8030ed47>] kobject_release+0x0/0x5e
Nov 5 13:09:13 seras kernel: [ 172.760586] [<ffffffff80387443>] blkif_schedule+0x3c7/0x4dc
Nov 5 13:09:13 seras kernel: [ 172.760721] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:13 seras kernel: [ 172.760854] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:13 seras kernel: [ 172.760983] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:13 seras kernel: [ 172.761113] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:13 seras kernel: [ 172.761245] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:13 seras kernel: [ 172.761368] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:13 seras kernel: [ 172.761490]
Nov 5 13:09:13 seras kernel: [ 172.761598] ---[ end trace ed74c6b3e0d63c1b ]---
Nov 5 13:09:13 seras kernel: [ 172.761815] kobject: '<NULL>' (ffff88001f2d12b0): is not initialized, yet kobject_put() is being called.
Nov 5 13:09:13 seras kernel: [ 172.761981] ------------[ cut here ]------------
Nov 5 13:09:13 seras kernel: [ 172.762098] WARNING: at lib/kobject.c:583 kobject_put+0x34/0x47()
Nov 5 13:09:13 seras kernel: [ 172.762231] Modules linked in: xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables ipv6 nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc aoe 8021q xfs ipmi_devintf ipmi_si ipmi_msghandler loop serio_raw pcspkr psmouse k8temp shpchp pci_hotplug i2c_nforce2 i2c_core button evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid1 md_mod sd_mod ide_pci_generic usbhid hid ff_memless amd74xx ide_core sata_nv tg3 forcedeth ata_generic libata scsi_mod dock ehci_hcd ohci_hcd thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Nov 5 13:09:13 seras kernel: [ 172.768466] Pid: 7375, comm: blkback.9.xvda1 Tainted: G W 2.6.26-2-xen-amd64 #1
Nov 5 13:09:13 seras kernel: [ 172.768466]
Nov 5 13:09:13 seras kernel: [ 172.768466] Call Trace:
Nov 5 13:09:13 seras kernel: [ 172.768466] [<ffffffff8022cbce>] warn_on_slowpath+0x51/0x78
Nov 5 13:09:13 seras kernel: [ 172.768466] [<ffffffff8022d6da>] printk+0x4e/0x56
Nov 5 13:09:13 seras kernel: [ 172.768480] [<ffffffff8030ed47>] kobject_release+0x0/0x5e
Nov 5 13:09:13 seras kernel: [ 172.768603] [<ffffffff8030ec9a>] kobject_put+0x34/0x47
Nov 5 13:09:13 seras kernel: [ 172.768723] [<ffffffff8038698d>] unplug_queue+0x2b/0x35
Nov 5 13:09:13 seras kernel: [ 172.771443] [<ffffffff80387482>] blkif_schedule+0x406/0x4dc
Nov 5 13:09:13 seras kernel: [ 172.771571] [<ffffffff8038707c>] blkif_schedule+0x0/0x4dc
Nov 5 13:09:13 seras kernel: [ 172.771693] [<ffffffff8023f593>] kthread+0x47/0x74
Nov 5 13:09:13 seras kernel: [ 172.771819] [<ffffffff802283a8>] schedule_tail+0x27/0x5c
Nov 5 13:09:13 seras kernel: [ 172.771947] [<ffffffff8020be28>] child_rip+0xa/0x12
Nov 5 13:09:13 seras kernel: [ 172.772074] [<ffffffff8023f54c>] kthread+0x0/0x74
Nov 5 13:09:13 seras kernel: [ 172.772193] [<ffffffff8020be1e>] child_rip+0x0/0x12
Nov 5 13:09:13 seras kernel: [ 172.772311]
Nov 5 13:09:13 seras kernel: [ 172.772418] ---[ end trace ed74c6b3e0d63c1b ]---
Gabor
-- System Information:
Debian Release: 5.0.3
APT prefers stable
APT policy: (500, 'stable'), (101, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages linux-image-2.6.26-2-xen-amd64 depends on:
ii initramfs-tools 0.92o tools for generating an initramfs
ii linux-modules-2.6.26-2-x 2.6.26-19lenny1 Linux 2.6.26 modules on AMD64
linux-image-2.6.26-2-xen-amd64 recommends no packages.
Versions of packages linux-image-2.6.26-2-xen-amd64 suggests:
ii grub 0.97-47lenny2 GRand Unified Bootloader (Legacy v
pn linux-doc-2.6.26 <none> (no description available)
-- no debconf information
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