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    SubjectRe: i915 X lockup
    On 27.2.2009 11:01, Peter Zijlstra wrote:
    > would be good to have sysrq-w output

    There was nothing but events. So this is rather an intel driver
    userspace bug?

    SysRq : Show Blocked State
    task PC stack pid father
    events/1 D 0000000000000000 0 11 2
    ffff8801cb231da0 0000000000000046 ffff8801cb231d00 ffffffff80231ef8
    0000003800000010 0000000000010180 ffff880028053840 ffff880028057180
    ffff8801cb20c790 ffff8801cb20ca38 00000001ca3f90e8 00000000ffff7a0e
    Call Trace:
    [<ffffffff80231ef8>] ? dequeue_entity+0x18/0x1a0
    [<ffffffff80230b50>] ? dequeue_task+0xb0/0xf0
    [<ffffffff805fca2a>] __mutex_lock_slowpath+0xea/0x170
    [<ffffffff803f60a0>] ? i915_gem_retire_work_handler+0x0/0x90
    [<ffffffff805fc6f6>] mutex_lock+0x26/0x50
    [<ffffffff803f60d8>] i915_gem_retire_work_handler+0x38/0x90
    [<ffffffff80250792>] worker_thread+0x172/0x250
    [<ffffffff80254da0>] ? autoremove_wake_function+0x0/0x40
    [<ffffffff80250620>] ? worker_thread+0x0/0x250
    [<ffffffff802549be>] kthread+0x9e/0xb0
    [<ffffffff8020d3da>] child_rip+0xa/0x20
    [<ffffffff80254920>] ? kthread+0x0/0xb0
    [<ffffffff8020d3d0>] ? child_rip+0x0/0x20


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