[Bug 76582] igt/drv_module_reload causes call trace

Thu Apr 17 00:51:44 PDT 2014

https://bugs.freedesktop.org/show_bug.cgi?id=76582

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
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             Status|NEEDINFO                    |NEW

--- Comment #12 from lu hua <huax.lu at intel.com> ---
Bisect shows: 1c61eae469e0d1d2fb9d7b77f51ca50c1f8f3ce9 is the first bad commit
commit 1c61eae469e0d1d2fb9d7b77f51ca50c1f8f3ce9
Author: Christian KÃ¶nig <christian.koenig at amd.com>
Date:   Tue Feb 18 01:50:22 2014 -0700

    drm/radeon: fix CP semaphores on CIK

    The CP semaphore queue on CIK has a bug that triggers if uncompleted
    waits use the same address while a signal is still pending. Work around
    this by using different addresses for each sync.

    Signed-off-by: Christian KÃ¶nig <christian.koenig at amd.com>
    Cc: stable at vger.kernel.org

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