Comment 10 for bug 769911

May 24 20:57:56 patrick-server kernel: [ 3950.896194] INFO: task Xorg:934 blocked for more than 120 seconds.
May 24 20:57:56 patrick-server kernel: [ 3950.896198] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 24 20:57:56 patrick-server kernel: [ 3950.896201] Xorg D f3440b00 0 934 904 0x00400004
May 24 20:57:56 patrick-server kernel: [ 3950.896206] f07a7da4 00203086 00000004 f3440b00 f07a7d58 f07a7d58 ed0a028c c1877680
May 24 20:57:56 patrick-server kernel: [ 3950.896212] 69c83ed5 00000374 ed0a0288 c1877680 c1877680 f7847680 ed0a0000 f74d0000
May 24 20:57:56 patrick-server kernel: [ 3950.896219] 000000ff f07a7d78 c144c948 f7402180 00000000 000000c0 efa6c000 ed0a0000
May 24 20:57:56 patrick-server kernel: [ 3950.896225] Call Trace:
May 24 20:57:56 patrick-server kernel: [ 3950.896234] [<c144c948>] ? __alloc_skb+0x58/0x100
May 24 20:57:56 patrick-server kernel: [ 3950.896240] [<c1035908>] ? default_spin_lock_flags+0x8/0x10
May 24 20:57:56 patrick-server kernel: [ 3950.896247] [<c15319af>] ? _raw_spin_lock_irqsave+0x2f/0x50
May 24 20:57:56 patrick-server kernel: [ 3950.896251] [<c153006d>] schedule_timeout+0x1ed/0x260
May 24 20:57:56 patrick-server kernel: [ 3950.896256] [<c14d3505>] ? unix_stream_sendmsg+0x365/0x3b0
May 24 20:57:56 patrick-server kernel: [ 3950.896261] [<c152fbf0>] wait_for_common+0xa0/0x130
May 24 20:57:56 patrick-server kernel: [ 3950.896266] [<c1053430>] ? default_wake_function+0x0/0x20
May 24 20:57:56 patrick-server kernel: [ 3950.896270] [<c152fd57>] wait_for_completion+0x17/0x20
May 24 20:57:56 patrick-server kernel: [ 3950.896558] [<fac58c47>] os_acquire_sema+0x77/0x90 [nvidia]
May 24 20:57:56 patrick-server kernel: [ 3950.896835] [<fac2e4db>] _nv022874rm+0xa/0x21 [nvidia]
May 24 20:57:56 patrick-server kernel: [ 3950.897032] [<fa7b18a2>] ? _nv003714rm+0x1e1/0x22f [nvidia]
May 24 20:57:56 patrick-server kernel: [ 3950.897248] [<fa7b190f>] ? _nv002328rm+0x1f/0x23 [nvidia]
May 24 20:57:56 patrick-server kernel: [ 3950.897438] [<fa798435>] ? _nv002009rm+0x2b/0x4e [nvidia]
May 24 20:57:56 patrick-server kernel: [ 3950.897713] [<fac3b484>] ? _nv002413rm+0x5d8/0x611 [nvidia]