Issue

• System hangs frequently on "cciss:do_cciss_request".

INFO: task kjournald:453 blocked for more than 120 seconds. 
  "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  kjournald     D ffff810009736420     0   453     27           479   438 (L-TLB)
   ffff81007dc45cf0 0000000000000046 ffff810054ac6068 ffffffff880bba09
   0000000000000010 000000000000000a ffff81003f816830 ffffffff8031db60
   00001d4d988e9877 00000000000012c7 ffff81003f816a18 000000007fdfdc38
  Call Trace:
   [<ffffffff880bba09>] :cciss:do_cciss_request+0x32/0x4ed 
   [<ffffffff8006edac>] do_gettimeofday+0x40/0x90
   [<ffffffff800155b0>] sync_buffer+0x0/0x3f
   [<ffffffff800637de>] io_schedule+0x3f/0x67
   [<ffffffff800155eb>] sync_buffer+0x3b/0x3f
   [<ffffffff80063a0a>] __wait_on_bit+0x40/0x6e
   [<ffffffff800155b0>] sync_buffer+0x0/0x3f
   [<ffffffff80063aa4>] out_of_line_wait_on_bit+0x6c/0x78
   [<ffffffff800a3fd0>] wake_bit_function+0x0/0x23
   [<ffffffff88033e65>] :jbd:journal_commit_transaction+0x96b/0x10c6
   [<ffffffff8003dde5>] lock_timer_base+0x1b/0x3c
   [<ffffffff880376b3>] :jbd:kjournald+0xc1/0x213
   [<ffffffff800a3fa2>] autoremove_wake_function+0x0/0x2e
   [<ffffffff880375f2>] :jbd:kjournald+0x0/0x213
   [<ffffffff800a3d8a>] keventd_create_kthread+0x0/0xc4
   [<ffffffff80032c52>] kthread+0xfe/0x132
   [<ffffffff8005dfc1>] child_rip+0xa/0x11
   [<ffffffff800a3d8a>] keventd_create_kthread+0x0/0xc4
   [<ffffffff80032b54>] kthread+0x0/0x132
   [<ffffffff8005dfb7>] child_rip+0x0/0x11

  Kernel panic - not syncing: hung_task: blocked tasks