[Bug 64978] New: [sna] drm mm object leaks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64978

          Priority: medium
            Bug ID: 64978
          Assignee: chris at chris-wilson.co.uk
           Summary: [sna] drm mm object leaks
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jirislaby at gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 79783
  --> https://bugs.freedesktop.org/attachment.cgi?id=79783&action=edit
xorg log

After some time my system is unusable because I have 3.5G of
active/unreclaimable shmem. So I put a printout to shmem_file_setup and
shm_destroy and I see only:
  shmem_file_setup: Xorg drm mm object
pretty often without shm files being destroyed afterwards.

This is exploitable by browsing maps in a browser very quickly. A minute ago I
had
  Cached:           695024 kB
browsed a map in firefox and now I see:
  Cached:           759500 kB

(This is output of "sync;echo 3 > /proc/sys/vm/drop_caches ;grep Cached
/proc/meminfo".)

Didn't you change something in the ddx lately? This started happening like a
week or two ago...

This happens both on ivb and g33.

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