Comment 3 for bug 606523

No love,
Linux tonic 2.6.35-9-server #14~lucid1-Ubuntu SMP Sun Jul 18 22:44:45 UTC 2010 x86_64 GNU/Linux
has the same problem:

Jul 22 08:43:10 tonic kernel: [55920.730905] nfsd D 00000001005482f1 0 4452 2 0x00000000
Jul 22 08:43:10 tonic kernel: [55920.730909] ffff8801ef767950 0000000000000046 ffff880100000000 0000000000015900
Jul 22 08:43:10 tonic kernel: [55920.730913] ffff8801ef767fd8 0000000000015900 ffff8801ef767fd8 ffff8801ef780000
Jul 22 08:43:10 tonic kernel: [55920.730917] 0000000000015900 0000000000015900 ffff8801ef767fd8 0000000000015900
Jul 22 08:43:10 tonic kernel: [55920.730921] Call Trace:
Jul 22 08:43:10 tonic kernel: [55920.730925] [<ffffffff8159d32f>] __mutex_lock_slowpath+0xff/0x190
Jul 22 08:43:10 tonic kernel: [55920.730929] [<ffffffff8159cd23>] mutex_lock+0x23/0x50
Jul 22 08:43:10 tonic kernel: [55920.730933] [<ffffffff811019a2>] generic_file_aio_write+0x52/0xd0
Jul 22 08:43:10 tonic kernel: [55920.730936] [<ffffffff81101950>] ? generic_file_aio_write+0x0/0xd0
Jul 22 08:43:10 tonic kernel: [55920.730940] [<ffffffff81151713>] do_sync_readv_writev+0xd3/0x110
Jul 22 08:43:10 tonic kernel: [55920.730944] [<ffffffff8159e49e>] ? _raw_spin_lock+0xe/0x20
Jul 22 08:43:10 tonic kernel: [55920.730948] [<ffffffff8128e749>] ? apparmor_file_permission+0x19/0x20
Jul 22 08:43:10 tonic kernel: [55920.730952] [<ffffffff8125d3b6>] ? security_file_permission+0x16/0x20
Jul 22 08:43:10 tonic kernel: [55920.730956] [<ffffffff8115274f>] do_readv_writev+0xcf/0x1f0
Jul 22 08:43:10 tonic kernel: [55920.730959] [<ffffffff8108607b>] ? set_groups+0x3b/0x60
Jul 22 08:43:10 tonic kernel: [55920.730969] [<ffffffffa026b9d6>] ? nfsd_setuser+0x126/0x2c0 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.730973] [<ffffffff811a54e0>] ? dquot_file_open+0x0/0x50
Jul 22 08:43:10 tonic kernel: [55920.730976] [<ffffffff811528b8>] vfs_writev+0x48/0x60
Jul 22 08:43:10 tonic kernel: [55920.730985] [<ffffffffa026517d>] nfsd_vfs_write+0x10d/0x420 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.730989] [<ffffffff81150142>] ? dentry_open+0x52/0xc0
Jul 22 08:43:10 tonic kernel: [55920.730998] [<ffffffffa02656e1>] ? nfsd_open+0x101/0x1a0 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.731007] [<ffffffffa02659f7>] nfsd_write+0xe7/0x100 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.731017] [<ffffffffa026f37f>] nfsd3_proc_write+0xaf/0x140 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.731025] [<ffffffffa026043e>] nfsd_dispatch+0xfe/0x250 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.731039] [<ffffffffa01b8774>] svc_process_common+0x344/0x610 [sunrpc]
Jul 22 08:43:10 tonic kernel: [55920.731043] [<ffffffff81055b70>] ? default_wake_function+0x0/0x20
Jul 22 08:43:10 tonic kernel: [55920.731056] [<ffffffffa01b8b50>] svc_process+0x110/0x150 [sunrpc]
Jul 22 08:43:10 tonic kernel: [55920.731064] [<ffffffffa0260ae5>] nfsd+0xc5/0x170 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.731072] [<ffffffffa0260a20>] ? nfsd+0x0/0x170 [nfsd]
Jul 22 08:43:10 tonic kernel: [55920.731076] [<ffffffff8107d9c6>] kthread+0x96/0xa0
Jul 22 08:43:10 tonic kernel: [55920.731080] [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
Jul 22 08:43:10 tonic kernel: [55920.731083] [<ffffffff8107d930>] ? kthread+0x0/0xa0
Jul 22 08:43:10 tonic kernel: [55920.731086] [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10