Comment 5 for bug 845158

I see a similar issue with jetty:

Sep 12 11:18:43 winehouse kernel: [ 602.998992] INFO: task jsvc:693 blocked for more than 120 seconds.
Sep 12 11:18:43 winehouse kernel: [ 602.999176] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 12 11:18:43 winehouse kernel: [ 602.999176] jsvc D c05ca9e0 0 693 673 0x00000001
Sep 12 11:18:43 winehouse kernel: [ 602.999176] [<c05ca9e0>] (schedule+0x540/0x618) from [<c05cc728>] (__down_read+0xc0/0xd8)
Sep 12 11:18:43 winehouse kernel: [ 602.999176] [<c05cc728>] (__down_read+0xc0/0xd8) from [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0)
Sep 12 11:18:43 winehouse kernel: [ 602.999694] [<c05cf5e8>] (do_page_fault.part.2+0x80/0x1e0) from [<c05cf7e4>] (do_page_fault+0x9c/0xac)
Sep 12 11:18:43 winehouse kernel: [ 602.999694] [<c05cf7e4>] (do_page_fault+0x9c/0xac) from [<c004c410>] (do_DataAbort+0x34/0x98)
Sep 12 11:18:43 winehouse kernel: [ 602.999755] [<c004c410>] (do_DataAbort+0x34/0x98) from [<c05cd844>] (ret_from_exception+0x0/0x10)
Sep 12 11:18:43 winehouse kernel: [ 602.999786] Exception stack(0xe88c9fb0 to 0xe88c9ff8)
Sep 12 11:18:43 winehouse kernel: [ 602.999786] 9fa0: 40007000 00000104 40007001 00000022
Sep 12 11:18:43 winehouse kernel: [ 602.999816] 9fc0: 40275000 00000104 40007000 00000100 00000040 00000000 00a71718 00a954e8
Sep 12 11:18:43 winehouse kernel: [ 602.999816] 9fe0: 00000000 597fec60 40242751 4024275c 000f0030 ffffffff
Sep 12 11:18:43 winehouse kernel: [ 602.999816] INFO: task jsvc:694 blocked for more than 120 seconds.
Sep 12 11:18:43 winehouse kernel: [ 603.000030] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 12 11:18:43 winehouse kernel: [ 603.000244] jsvc D c05ca9e0 0 694 673 0x00000001
Sep 12 11:18:43 winehouse kernel: [ 603.000244] [<c05ca9e0>] (schedule+0x540/0x618) from [<c05cc728>] (__down_read+0xc0/0xd8)
Sep 12 11:18:43 winehouse kernel: [ 603.000305] [<c05cc728>] (__down_read+0xc0/0xd8) from [<c008eb04>] (exit_mm+0x28/0x15c)
Sep 12 11:18:43 winehouse kernel: [ 603.000335] [<c008eb04>] (exit_mm+0x28/0x15c) from [<c008ee54>] (do_exit+0x21c/0x3ac)
Sep 12 11:18:43 winehouse kernel: [ 603.000335] [<c008ee54>] (do_exit+0x21c/0x3ac) from [<c008f1bc>] (do_group_exit+0x90/0xc0)
Sep 12 11:18:43 winehouse kernel: [ 603.000366] [<c008f1bc>] (do_group_exit+0x90/0xc0) from [<c009d8d0>] (get_signal_to_deliver+0x37c/0x3c0)
Sep 12 11:18:43 winehouse kernel: [ 603.000366] [<c009d8d0>] (get_signal_to_deliver+0x37c/0x3c0) from [<c00541cc>] (do_signal+0xb0/0x20c)
Sep 12 11:18:43 winehouse kernel: [ 603.000366] [<c00541cc>] (do_signal+0xb0/0x20c) from [<c005487c>] (do_notify_resume+0x18/0x50)
Sep 12 11:18:43 winehouse kernel: [ 603.000457] [<c005487c>] (do_notify_resume+0x18/0x50) from [<c0051278>] (work_pending+0x24/0x28)