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BUG: soft lockup detected on CPU#0!
CPU 0:
Modules linked in: bridge ipv6 parport_pc lp parport pcmcia firmware_class yenta_socket rsrc_nonstatic pcmcia_core binfmt_misc video thermal processor fan container button battery ac ohci_hcd usbcore i2c_amd8111 i2c_amd756 i2c_core sata_sil libata scsi_mod floppy mptbase amd74xx ide_generic tg3 e100 mii aoe dm_snapshot dm_zero dm_mirror dm_mod ext3 jbd
Pid: 5065, comm: xvd 3 98:110 Not tainted 2.6.16.29-xen #1
RIP: e030:[<ffffffff80135f03>] <ffffffff80135f03>{lock_timer_base+17}
RSP: e02b:ffff88003797fdf8  EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88003b1b8840 RSI: ffff88003797fe18 RDI: ffff88003e3d5188
RBP: ffff88003e3d5188 R08: ffff880039378000 R09: ffff88003b1b8840
R10: ffff880039378000 R11: ffff880039378000 R12: ffff88003797fe18
R13: ffff880000bec000 R14: 0000000000000001 R15: ffffffff80141020
FS:  00002ad9a2985960(0000) GS:ffffffff803aa000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000

Call Trace: <ffffffff801360c8>{try_to_del_timer_sync+18}
       <ffffffff80136114>{del_timer_sync+12} <ffffffff801d1e45>{blk_sync_queue+14}
       <ffffffff801d1e7e>{blk_cleanup_queue+51} <ffffffff80246bf9>{unplug_queue+36}
       <ffffffff802476e8>{blkif_schedule+689} <ffffffff801414fa>{autoremove_wake_function+0}
       <ffffffff801414fa>{autoremove_wake_function+0} <ffffffff80247437>{blkif_schedule+0}
       <ffffffff80140ff7>{kthread+200} <ffffffff8010b84a>{child_rip+8}
       <ffffffff80141020>{keventd_create_kthread+0} <ffffffff80140f2f>{kthread+0}
       <ffffffff8010b842>{child_rip+0}