[Bug 94571] New: Random stack traces on Ironlake since 3.19.1

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=94571

            Bug ID: 94571
           Summary: Random stack traces on Ironlake since 3.19.1
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.19.1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: itumaykin at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 169921
  --> https://bugzilla.kernel.org/attachment.cgi?id=169921&action=edit
lspci -k -vvv

Hello.

After kernel upgrade from 3.18.7 to 3.19.1 I occasionally get stack traces
related to drm_wait_one_vblank() in my dmesg. I haven't figured out the exact
conditions for these traces to appear, but they tend to appear more often while
browsing in Firefox or running VirtualBox. I had no such problems on 3.18.7.
When these traces appear everything seems to run as usual, except for
VirtualBox, which becomes very very slow.

My OS is Gentoo amd64 with vanilla kernel 3.19.1. If you need any additional
info I am ready to provide it.

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