[Bug 69104] New: Using stolen framebuffers and ringbuffers leads to incoherent CS reads

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69104

          Priority: medium
            Bug ID: 69104
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: Using stolen framebuffers and ringbuffers leads to
                    incoherent CS reads
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: chris at chris-wilson.co.uk
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 85434
  --> https://bugs.freedesktop.org/attachment.cgi?id=85434&action=edit
error

Note:

  ACTHD: 0x01a62044
    at batch: 0x01a62044
  IPEIR: 0x00000000
  IPEHR: 0xa12a1f8f

which is a long way past the end of the current batch 0x01a48000

Also note the object:   00043000     40776 04 48c7a000 2ed42030 3c6a7e38 P
snooped or LLC

Sadly we don't record which objects were in stolen, here is it the framebuffers
and ringbuffers.

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