[Bug 72274] New: drm/i195: Potential dangling pointer on context switch

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72274

          Priority: medium
            Bug ID: 72274
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: drm/i195: Potential dangling pointer on context switch
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: josh at freedesktop.org
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

See https://chromium-review.googlesource.com/#/c/177627/ for full report and
patch.

"When HW context switch is enabled, the last context switched away from
is stored in the ring, and when a context is unbound, the ring pointer
is not updated."

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