i believe i'm seeing the same issue on Lucid while running rsync Linux box05 2.6.32-23-server #37-Ubuntu SMP Fri Jun 11 09:11:11 UTC 2010 x86_64 GNU/Linux BUG: unable to handle kernel paging request at 0000000000001f00 IP: [] __ticket_spin_lock+0x9/0x20 PGD 119669067 PUD 11b228067 PMD 0 Oops: 0002 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1c.7/0000:03:00.0/local_cpus CPU 1 Modules linked in: ppdev nfsd exportfs nfs lockd nfs_acl autofs4 auth_rpcgss snd_hda_codec_realtek max6650 coretemp snd_hda_intel nbd snd_hda_codec snd_hwdep snd_pcm sunrpc joydev snd_timer snd psmouse soundcore serio_raw snd_page_alloc nvidia(P) lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov pata_marvell usbhid hid raid6_pq async_tx raid1 raid0 ahci e1000e multipath linear Pid: 18736, comm: rsync Tainted: P 2.6.32-23-server #37-Ubuntu RIP: 0010:[] [] __ticket_spin_lock+0x9/0x20 RSP: 0018:ffff8801136d7988 EFLAGS: 00010006 RAX: 0000000000000100 RBX: 00000000000018c0 RCX: 00000000000000c0 RDX: 000000000000003f RSI: 000000000000000e RDI: 0000000000001f00 RBP: ffff8801136d7988 R08: 0000000000000000 R09: ffff8801178186b0 R10: ffff88011ae2cf00 R11: dead000000200200 R12: ffffea000274f058 R13: 0000000000000660 R14: 0000000000000002 R15: ffff880005851be0 FS: 00007f5ea6d3a700(0000) GS:ffff880005840000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000001f00 CR3: 00000001179dc000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rsync (pid: 18736, threadinfo ffff8801136d6000, task ffff8801078a5bc0) Stack: ffff8801136d7998 ffffffff81559c25 ffff8801136d7a18 ffffffff810ff29a <0> ffff8801136d79e8 00000000000000d1 00000003136d7af8 0000000000000001 <0> 0000000202dd17f8 0000000000000003 00000000136d79e8 00000000000000d3 Call Trace: [] _spin_lock_irq+0x15/0x20 [] ____pagevec_lru_add+0x18a/0x200 [] __lru_cache_add+0x58/0x70 [] add_to_page_cache_lru+0x68/0x80 [] mpage_readpages+0xd0/0x150 [] ? ext4_get_block+0x0/0x120 [] ? ext4_get_block+0x0/0x120 [] ? __alloc_pages_nodemask+0xd9/0x180 [] ext4_readpages+0x1d/0x20 [] __do_page_cache_readahead+0x13b/0x210 [] ra_submit+0x21/0x30 [] ondemand_readahead+0x115/0x240 [] page_cache_async_readahead+0x90/0xd0 [] T.805+0x1e1/0x400 [] generic_file_aio_read+0xb6/0x1d0 [] do_sync_read+0xfa/0x140 [] ? autoremove_wake_function+0x0/0x40 [] ? ktime_get_ts+0xa9/0xe0 [] ? security_file_permission+0x16/0x20 [] vfs_read+0xb5/0x1a0 [] sys_read+0x51/0x80 [] system_call_fastpath+0x16/0x1b Code: 00 00 48 c7 c2 1e 95 03 81 48 c7 c1 21 95 03 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 01 00 00 48 89 e5 66 0f c1 07 38 e0 74 06 f3 90 8a 07 eb f6 c9 c3 66 0f 1f 44 RIP [] __ticket_spin_lock+0x9/0x20 RSP CR2: 0000000000001f00 ---[ end trace 4d42d7d24e90bfc6 ]--- BUG: unable to handle kernel paging request at 0000000000001f00 IP: [] __ticket_spin_lock+0x9/0x20 PGD 119669067 PUD 11b228067 PMD 0 Oops: 0002 [#2] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1c.7/0000:03:00.0/local_cpus CPU 1 Modules linked in: ppdev nfsd exportfs nfs lockd nfs_acl autofs4 auth_rpcgss snd_hda_codec_realtek max6650 coretemp snd_hda_intel nbd snd_hda_codec snd_hwdep snd_pcm sunrpc joydev snd_timer snd psmouse soundcore serio_raw snd_page_alloc nvidia(P) lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov pata_marvell usbhid hid raid6_pq async_tx raid1 raid0 ahci e1000e multipath linear Pid: 18736, comm: rsync Tainted: P D 2.6.32-23-server #37-Ubuntu RIP: 0010:[] [] __ticket_spin_lock+0x9/0x20 RSP: 0018:ffff8801136d75e8 EFLAGS: 00010002 RAX: 0000000000000100 RBX: 00000000000018c0 RCX: 00000000000000c0 RDX: 000000000000003f RSI: 000000000000000e RDI: 0000000000001f00 RBP: ffff8801136d75e8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffea000274f058 R13: 0000000000000660 R14: 0000000000000002 R15: ffff880005851be0 FS: 0000000000000000(0000) GS:ffff880005840000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000001f00 CR3: 00000001179dc000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rsync (pid: 18736, threadinfo ffff8801136d6000, task ffff8801078a5bc0) Stack: ffff8801136d75f8 ffffffff81559c25 ffff8801136d7678 ffffffff810ff29a <0> 0000000000000082 00000000000000d1 00000003136d7668 0000000000000001 <0> 0000000200000086 0000000000000003 00000000136d7658 00000000000000d3 Call Trace: [] _spin_lock_irq+0x15/0x20 [] ____pagevec_lru_add+0x18a/0x200 [] lru_add_drain+0x93/0xa0 [] exit_mmap+0x64/0x190 [] mmput+0x42/0x110 [] exit_mm+0x112/0x150 [] ? _spin_lock_irq+0x15/0x20 [] do_exit+0x125/0x380 [] oops_end+0xb0/0xf0 [] no_context+0xf3/0x190 [] __bad_area_nosemaphore+0x125/0x1e0 [] bad_area+0x4e/0x60 [] do_page_fault+0x331/0x3b0 [] page_fault+0x25/0x30 [] ? __ticket_spin_lock+0x9/0x20 [] ? mem_cgroup_add_lru_list+0x21/0xa0 [] _spin_lock_irq+0x15/0x20 [] ____pagevec_lru_add+0x18a/0x200 [] __lru_cache_add+0x58/0x70 [] add_to_page_cache_lru+0x68/0x80 [] mpage_readpages+0xd0/0x150 [] ? ext4_get_block+0x0/0x120 [] ? ext4_get_block+0x0/0x120 [] ? __alloc_pages_nodemask+0xd9/0x180 [] ext4_readpages+0x1d/0x20 [] __do_page_cache_readahead+0x13b/0x210 [] ra_submit+0x21/0x30 [] ondemand_readahead+0x115Jul 12 11:34:07 box05 kernel: imklog 4.2.0, log source = /proc/kmsg started.