[Bug 100632] New: Latest intel drivers from git cause massive use of shared memory on haswell system

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100632

            Bug ID: 100632
           Summary: Latest intel drivers from git cause massive use of
                    shared memory on haswell system
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: sergio.callegari at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Seen on KUbuntu 16.10 (yakkety) with an haswell laptop.

Using the stock intel drivers shipped with the distro, everything is fine.

Using the "oibaf ppa", which is a way of getting the latest video drivers
including latest git tip for mesa, libdrm, libva, xorg-video-intel you get
opengl 4 and a much more modern stack.

However, since a few days ago (hard to say exactly when, would guess about the
first days of april), a nasty phenomenon started to show up, consisting in more
and more memory being used by the system, until the system starts swapping and
freezes.

Using the free command, the item that starts growing uncontrollably is the
"shared" entry. I have seen it going above 7GB.

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