BUG: soft lockup - CPU#0 stuck for 61s! [init:1]
Modules linked in: binfmt_misc joydev ppdev thinkpad_acpi psmouse lp parport nvram nvidia(P) serio_raw arc4 ecb bridge stp sdhci_pci bnep iwlagn sdhci pcmcia iwlcore led_class btusb yenta_socket rsrc_nonstatic pcmcia_core ricoh_mmc snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer mac80211 snd_seq_device iptable_filter snd cfg80211 ip_tables x_tables soundcore snd_page_alloc ohci1394 ieee1394 video output e1000e intel_agp agpgart

Pid: 1, comm: init Tainted: P        W  (2.6.31-14-generic #48-Ubuntu)        
EIP: 0060:[<c01b3b94>] EFLAGS: 00000246 CPU: 0
EIP is at find_get_pages+0x54/0xf0
EAX: f6f59a54 EBX: f7055d18 ECX: 00000000 EDX: bfb62aa4
ESI: 00000000 EDI: 00000000 EBP: f7055ce0 ESP: f7055cb4
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 8005003b CR2: f9a00504 CR3: 368fc000 CR4: 000006d0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
Call Trace:
 [<c01bb5ab>] pagevec_lookup+0x1b/0x30
 [<c01bc694>] truncate_inode_pages_range+0x94/0x330
 [<c0315fb6>] ? put_dec+0x136/0x140
 [<c01bc94a>] truncate_inode_pages+0x1a/0x20
 [<c02286e1>] proc_delete_inode+0x21/0x60
 [<c02286c0>] ? proc_delete_inode+0x0/0x60
 [<c01faecc>] generic_delete_inode+0xac/0x160
 [<c0310579>] ? _atomic_dec_and_lock+0x59/0x80
 [<c01fa011>] iput+0x41/0x60
 [<c01f761f>] dentry_iput+0x6f/0xf0
 [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40
 [<c01f7756>] d_kill+0x36/0x60
 [<c01f77ad>] prune_one_dentry+0x2d/0xa0
 [<c01f7a18>] __shrink_dcache_sb+0x1f8/0x220
 [<c01f7d15>] shrink_dcache_parent+0x105/0x120
 [<c022c9df>] proc_flush_task_mnt+0x1df/0x1f0
 [<c01eecf8>] ? pipe_read+0x2b8/0x3c0
 [<c022ca3f>] proc_flush_task+0x4f/0x80
 [<c014746c>] release_task+0x1c/0x100
 [<c0148af2>] wait_task_zombie+0x562/0x6a0
 [<c0148d59>] wait_consider_task+0x129/0x160
 [<c0148e70>] do_wait+0xe0/0x2b0
 [<c013c5a0>] ? default_wake_function+0x0/0x10
 [<c01491b0>] sys_waitid+0x80/0xb0
 [<c010336c>] syscall_call+0x7/0xb