[Bug 60028] Post-3.7.x memory leak, Radeon Evergreen, bisected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60028

--- Comment #8 from Dave Witbrodt <dawitbro at sbcglobal.net> ---
(In reply to comment #7)
> This is indeed more likely an issue in Mesa than in the kernel. The commit
> you bisected also bumps KMS_DRIVER_MINOR in radeon_drv.c, which may cause
> the Mesa code to use different code paths.

In my two attempted manual reverts, I didn't know what effect the code in
radeon_drv.c actually had.  When looking at later DRM changes (after the one
identified by the bisection) I saw that the value of KMS_DRIVER_MINOR was
incremented further, so I thought I should leave the value unchanged.


> Does current Mesa Git still leak?

After updating/merging to the current HEAD (commit 02b6da1e of Jan. 29), I
built new Mesa packages and installed them.

I am currently relying the last kernel from my local tree which does not leak,
so I rebooted to the kernel I had built that is most current with the upstream
DRM changes:  stable 3.7.4 + many commits from drm-next/drm-fixes up to commit
014b3440 of Jan. 21 in drm-fixes.

Yes, it still leaks.


Would it be good for me to bisect Mesa?  I would use my most up-to-date kernel,
try to find an older version of Mesa which does not leak, and then identify the
first patch to Mesa which causes the leaking.

The testing I have done so far was assuming the problem was in the kernel, but
I was planning to look at Mesa as well.  I decided to report the bug before
continuing, hoping for some guidance from the experts.  If there really is a
memory leak caused by the kernel DRI, then I would like to help get it fixed
before 3.8 is released; or, if there is a problem in Mesa I would like to help
get it fixed for 9.1.

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