[Xen-bugs] [Bug 1626] 2.6.32 Dom0 crashes after lv* commands

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1626


hlangos-xen@xxxxxxxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hlangos-xen@xxxxxxxxxxxxxx




------- Comment #2 from hlangos-xen@xxxxxxxxxxxxxx  2011-02-11 07:03 -------
I see a very similar thing if I do quick logout + login from/to iSCSI targets
to which I have two connections (using multipath):

It works ok if I give the system a couple of seconds between logout and login
but if I do it quickly I get those:

[225059.791927] scsi 20:0:0:0: Direct-Access     EQLOGIC  100E-00          5.0 
PQ: 0 ANSI: 5
[225059.793185] scsi 21:0:0:0: Direct-Access     EQLOGIC  100E-00          5.0 
PQ: 0 ANSI: 5
[225059.796144] sd 20:0:0:0: [sdd] 16803840 512-byte logical blocks: (8.60
GB/8.01 GiB)
[225059.797313] sd 20:0:0:0: [sdd] Write Protect is off
[225059.797345] sd 20:0:0:0: [sdd] Mode Sense: 99 00 00 00
[225059.797491] sd 21:0:0:0: [sde] 16803840 512-byte logical blocks: (8.60
GB/8.01 GiB)
[225059.797560] sd 20:0:0:0: [sdd] Write cache: disabled, read cache: enabled,
doesn't support DPO or FUA
[225059.798398] sd 21:0:0:0: [sde] Write Protect is off
[225059.798435] sd 21:0:0:0: [sde] Mode Sense: 99 00 00 00
[225059.798634]  sdd:
[225059.798667] sd 21:0:0:0: [sde] Write cache: disabled, read cache: enabled,
doesn't support DPO or FUA
[225059.799697]  sde: sdd1 sdd2
[225059.808140]  sde1 sde2
[225059.814199] sd 21:0:0:0: [sde] Attached SCSI disk
[225059.819722] sd 20:0:0:0: [sdd] Attached SCSI disk
[225060.039126] BUG: unable to handle kernel paging request at ffff88001558b010
[225060.039172] IP: [<ffffffff8100e428>] xen_set_pmd+0x15/0x2c
[225060.039210] PGD 1002067 PUD 1006067 PMD 18a067 PTE 801000001558b065
[225060.039253] Oops: 0003 [#1] SMP
[225060.039284] last sysfs file: /sys/devices/virtual/block/dm-6/dm/suspended
[225060.039319] CPU 0
[225060.039344] Modules linked in: tun dm_round_robin crc32c xt_tcpudp
nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_physdev
iptable_filter ip_tables x_tables bridge stp xen_evtchn xenfs ib_iser rdma_cm
ib_c
m iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi dm_multipath scsi_dh loop snd_hda_intel snd_hda_codec
snd_hwdep snd_pcm i915 drm_kms_helper drm snd_timer i2c_i801 evdev parport_pc
psmouse serio_raw pcspkr i2c_
algo_bit parport i2c_core snd soundcore video output snd_page_alloc button
processor acpi_processor ext3 jbd mbcache dm_mod sd_mod crc_t10dif usbhid hid
uhci_hcd ata_generic ata_piix libata ehci_hcd scsi_mod e1000e usbcore nls_base
thermal thermal_sys
 [last unloaded: scsi_wait_scan]
[225060.039851] Pid: 9259, comm: kpartx_id Not tainted 2.6.32-5-xen-amd64 #1 To
Be Filled By O.E.M.
[225060.039904] RIP: e030:[<ffffffff8100e428>]  [<ffffffff8100e428>]
xen_set_pmd+0x15/0x2c
[225060.039959] RSP: e02b:ffff880013ad3b18  EFLAGS: 00010246
[225060.039990] RAX: 0000000000000000 RBX: ffff88001558b010 RCX:
ffff880000000000
[225060.040006] RDX: ffffea0000000000 RSI: 0000000001cc0000 RDI:
ffff88001558b010
[225060.040006] RBP: 0000000000000000 R08: 0000000001cc0000 R09:
ffff880073c03100
[225060.040006] R10: 0000000000000000 R11: ffff88002ce3bd78 R12:
000000000061c000
[225060.040006] R13: 0000000000400000 R14: ffff88001558b010 R15:
ffff88002e156000
[225060.040006] FS:  00007f5094f64700(0000) GS:ffff880003630000(0000)
knlGS:0000000000000000
[225060.040006] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[225060.040006] CR2: ffff88001558b010 CR3: 0000000011a2b000 CR4:
0000000000002660
[225060.040006] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[225060.040006] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[225060.040006] Process kpartx_id (pid: 9259, threadinfo ffff880013ad2000, task
ffff880002747810)
[225060.040006] Stack:
[225060.040006]  ffff880000000000 0000000000600000 0000000000400000
ffffffff810cf886
[225060.040006] <0> ffff880013ad3fd8 0000000017ab2067 ffff880002159180
0000000000000000
[225060.040636] <0> 0000000000000000 000000000061bfff 000000000061bfff
0000000001c00000
[225060.040636] Call Trace:
[225060.040636]  [<ffffffff810cf886>] ? free_pgd_range+0x226/0x3bf
[225060.040636]  [<ffffffff810cfabb>] ? free_pgtables+0x9c/0xbd
[225060.040636]  [<ffffffff810d129d>] ? exit_mmap+0xef/0x148
[225060.040636]  [<ffffffff8104cb09>] ? mmput+0x3c/0xdf
[225060.040636]  [<ffffffff810f44d6>] ? flush_old_exec+0x45c/0x548
[225060.040636]  [<ffffffff811270d0>] ? load_elf_binary+0x0/0x1954
[225060.040636]  [<ffffffff8112746d>] ? load_elf_binary+0x39d/0x1954
[225060.040636]  [<ffffffff810cc572>] ? follow_page+0x2ad/0x303
[225060.040636]  [<ffffffff810ce136>] ? __get_user_pages+0x3ea/0x47b
[225060.040636]  [<ffffffff810f4fcb>] ? get_arg_page+0x61/0x110
[225060.040636]  [<ffffffff811270d0>] ? load_elf_binary+0x0/0x1954
[225060.040636]  [<ffffffff810f3caa>] ? search_binary_handler+0xb4/0x245
[225060.040636]  [<ffffffff810f54a7>] ? do_execve+0x1e4/0x2c3
[225060.040636]  [<ffffffff81010500>] ? sys_execve+0x35/0x4c
[225060.040636]  [<ffffffff81011f9a>] ? stub_execve+0x6a/0xc0
[225060.040636] Code: fb ff ff e8 c6 f4 01 00 bf 01 00 00 00 e8 c9 ea ff ff 59
5e 5b c3 55 48 89 f5 53 48 89 fb 48 83 ec 08 e8 6e e3 ff ff 84 c0 75 08 <48> 89
2b 41 59 5b 5d c3 41 58 48 89 df 48 89 ee 5b 5d e9 7e ff
[225060.042981] RIP  [<ffffffff8100e428>] xen_set_pmd+0x15/0x2c
[225060.042981]  RSP <ffff880013ad3b18>
[225060.042981] CR2: ffff88001558b010
[225060.042981] ---[ end trace 9939eec096f5a2de ]---

I am able to continue working on the system but it usually leaves me with
defunct scsi or multipath devices that I can't remove from the system anymore.


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