Bug 73127

Is there a way to use Gallium's HUD to determine when memory is definitely *not* being leaked, please? Otherwise, I fear any attempt at bisecting this is doomed to fail...

Can you bisect?

(In reply to comment #2)
> Can you bisect?

See comment 1.

I am also suspecting that it is Minecraft, not Warcraft, that is the root cause here, because I have since played WoW for a while without reproducing this. So now I'm thinking that maybe Minecraft leaked enough memory that WoW couldn't run.

(In reply to comment #1)
> Is there a way to use Gallium's HUD to determine when memory is definitely
> *not* being leaked, please? Otherwise, I fear any attempt at bisecting this
> is doomed to fail...

Run: GALLIUM_HUD=help glxgears

You should see 2 queries: requested-VRAM and requested-GTT.

(In reply to comment #4)
> You should see 2 queries: requested-VRAM and requested-GTT.

When you say "requested-VRAM", does that measure the total VRAM currently allocated by the particular application? Or is it by all applications? Can you determine anything useful from the OOM message?

There is a failure in kmalloc, meaning that there may be a memory leak in the kernel.

The Gallium HUD queries say how many bytes were allocated by the app (OpenGL, etc.) It doesn't reflect the current state of the kernel memory manager.

(In reply to comment #6)
> There is a failure in kmalloc, meaning that there may be a memory leak in
> the kernel.

I had gathered that much already from the line saying "page allocation failure", but there are a lot of other lines such as these, which I am finding it harder to parse:

Dec 26 12:59:32 landingpod kernel: [ 3977.929263] Node 0 DMA: 0*4kB 0*8kB 1*16kB (U) 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096kB (M) = 15888kB
Dec 26 12:59:32 landingpod kernel: [ 3977.929276] Node 0 DMA32: 2346*4kB (UEM) 2231*8kB (UEM) 2324*16kB (UEM) 1206*32kB (UEM) 24*64kB (EM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 104544kB
Dec 26 12:59:32 landingpod kernel: [ 3977.929287] Node 0 Normal: 984*4kB (UEMR) 1938*8kB (UEMR) 914*16kB (UEMR) 8*32kB (MR) 3*64kB (R) 0*128kB 0*256kB 1*512kB (R) 1*1024kB (R) 0*2048kB 0*4096kB = 36048kB
Dec 26 12:59:32 landingpod kernel: [ 3977.929300] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Dec 26 12:59:32 landingpod kernel: [ 3977.929301] 481313 total pagecache pages

I presume they are providing *someone* with valuable diagnostic information, or else why are they there?

Created attachment 93322 [details]
Memory being leaked with RV790

WoW is definitely leaking memory with current Mesa-git. I have attached the dmesg log that results after playing WoW for < 1 hour.

Mesa head is:

commit 9bace99d77642f8fbd46b1f0be025ad758f83f5e
Author: Zack Rusin <zackr@vmware.com>
Date:   Tue Jan 28 16:34:18 2014 -0500

    gallivm: fix opcode and function nesting

but the problem began before this.

The memory leak I'm seeing with my RV790 doesn't seem to occur with this git revision:

commit f5bd5568abcc234c1c2b6a4bb67b880706f3caed
Author: Mark Mueller <MarkKMueller@gmail.com>
Date:   Tue Jan 21 22:37:20 2014 -0800

    mesa: Fix Type A _INT formats to MESA_FORMAT naming standard

I am therefore assuming that this is a different bug to #73127.

Does valgrind --leak-check=full give any hints where the leak is?

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/479.