Bug#607141: xm block-attach failed on domU
Package: linux-image-2.6-xen-amd64
Version: 2.6.26-26lenny1
Severity: critical
Tags: lenny
Execution of xm block-attach to PV domU failed and I have got Ooops
kernel messages in attachment.
After that domU wasn't manageable from dom0 - all xm commands were not
successful and I had to shutdown the domU from the pty (ssh) console.
Both dom0 and domU were running same kernel version.
--
Peter Viskup
Dec 13 16:29:04 tis kernel: [83118.676876] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
Dec 13 16:29:04 tis kernel: [83118.676898] IP: [<ffffffff8038d104>] backend_changed+0x1bf/0x23a
Dec 13 16:29:04 tis kernel: [83118.676920] PGD 1e82f067 PUD 1f1a8067 PMD 0
Dec 13 16:29:04 tis kernel: [83118.676933] Oops: 0000 [1] SMP
Dec 13 16:29:04 tis kernel: [83118.676941] CPU 0
Dec 13 16:29:04 tis kernel: [83118.676948] Modules linked in: iptable_filter ip_tables x_tables ipv6 xfs evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod thermal_sys cciss scsi_mod
Dec 13 16:29:04 tis kernel: [83118.676991] Pid: 19, comm: xenwatch Not tainted 2.6.26-2-xen-amd64 #1
Dec 13 16:29:04 tis kernel: [83118.677000] RIP: e030:[<ffffffff8038d104>] [<ffffffff8038d104>] backend_changed+0x1bf/0x23a
Dec 13 16:29:04 tis kernel: [83118.677015] RSP: e02b:ffff88001fd11e60 EFLAGS: 00010246
Dec 13 16:29:04 tis kernel: [83118.677023] RAX: 0000000000000000 RBX: ffff880006dec000 RCX: 0000000000000000
Dec 13 16:29:04 tis kernel: [83118.677032] RDX: ffff88001fd11de8 RSI: 0000000000000005 RDI: ffff88001f12c400
Dec 13 16:29:04 tis kernel: [83118.677041] RBP: ffffffff8038327f R08: 0000000000000005 R09: 00000000ffffffff
Dec 13 16:29:04 tis kernel: [83118.677050] R10: ffff8800850bb000 R11: ffffffff8038cf45 R12: ffff88001f12c400
Dec 13 16:29:04 tis kernel: [83118.677059] R13: ffffffff8057c580 R14: ffffffff8057d1c0 R15: 0000000000000000
Dec 13 16:29:04 tis kernel: [83118.677070] FS: 00007f53a5d766e0(0000) GS:ffffffff8053a000(0000) knlGS:0000000000000000
Dec 13 16:29:04 tis kernel: [83118.677080] CS: e033 DS: 0000 ES: 0000
Dec 13 16:29:04 tis kernel: [83118.677087] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Dec 13 16:29:04 tis kernel: [83118.677097] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Dec 13 16:29:04 tis kernel: [83118.677106] Process xenwatch (pid: 19, threadinfo ffff88001fd10000, task ffff88001fd08140)
Dec 13 16:29:04 tis kernel: [83118.677116] Stack: ffffffff8057c580 ffffffff80383a01 ffff88001f059c40 ffff88001f12c400
Dec 13 16:29:04 tis kernel: [83118.677133] ffffffff8052a968 ffffffff8057c580 ffffffff8057d1c0 ffffffff80381c19
Dec 13 16:29:04 tis kernel: [83118.677148] 0000000000000000 0000000000000000 000000058038327f ffff88001f1f2d80
Dec 13 16:29:04 tis kernel: [83118.677161] Call Trace:
Dec 13 16:29:04 tis kernel: [83118.677172] [<ffffffff80383a01>] ? xenbus_device_find+0x28/0x31
Dec 13 16:29:04 tis kernel: [83118.677184] [<ffffffff80381c19>] ? xenbus_read_driver_state+0x26/0x3b
Dec 13 16:29:04 tis kernel: [83118.677195] [<ffffffff8038327f>] ? xenwatch_thread+0x0/0x186
Dec 13 16:29:04 tis kernel: [83118.677206] [<ffffffff8038295d>] ? xenwatch_handle_callback+0x15/0x48
Dec 13 16:29:04 tis kernel: [83118.677216] [<ffffffff803833ec>] ? xenwatch_thread+0x16d/0x186
Dec 13 16:29:04 tis kernel: [83118.677227] [<ffffffff8023f6ad>] ? autoremove_wake_function+0x0/0x2e
Dec 13 16:29:04 tis kernel: [83118.677237] [<ffffffff8023f57f>] ? kthread+0x47/0x74
Dec 13 16:29:04 tis kernel: [83118.677247] [<ffffffff802282ec>] ? schedule_tail+0x27/0x5c
Dec 13 16:29:04 tis kernel: [83118.677257] [<ffffffff8020be28>] ? child_rip+0xa/0x12
Dec 13 16:29:04 tis kernel: [83118.677268] [<ffffffff8023f538>] ? kthread+0x0/0x74
Dec 13 16:29:04 tis kernel: [83118.677276] [<ffffffff8020be1e>] ? child_rip+0x0/0x12
Dec 13 16:29:04 tis kernel: [83118.677283]
Dec 13 16:29:04 tis kernel: [83118.677287]
Dec 13 16:29:04 tis kernel: [83118.677291] Code: 23 3e 17 00 c6 40 01 00 80 38 00 74 05 e8 f1 00 ff ff 48 8b 7b 08 e8 56 8e f7 ff c7 83 9c 1a 00 00 01 00 00 00 eb 74 48 8b 43 08 <8b> 38 c1 e7 14 0b 78 04 e8 10 40 f2 ff 48 85 c0 48 89 c5 75 16
Dec 13 16:29:04 tis kernel: [83118.677391] RIP [<ffffffff8038d104>] backend_changed+0x1bf/0x23a
Dec 13 16:29:04 tis kernel: [83118.677402] RSP <ffff88001fd11e60>
Dec 13 16:29:04 tis kernel: [83118.677408] CR2: 0000000000000000
Dec 13 16:29:04 tis kernel: [83118.677419] ---[ end trace 75e2ecdeadd46e28 ]---
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