https://bugs.freedesktop.org/show_bug.cgi?id=96343

Bug ID: 96343 Summary: oom since st/mesa: implement PBO downloads for ReadPixels Product: Mesa Version: git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: adf.lists@gmail.com QA Contact: dri-devel@lists.freedesktop.org

Created attachment 124282 --> https://bugs.freedesktop.org/attachment.cgi?id=124282&action=edit oom

Tonga with xserver 1.8.3, agd5f drm-next-4.8-wip, git mesa/llvm/libdrm/xf86-video-amdgpu.

Desktop is fluxbox = non-compositing.

Since -

commit ed0e9862c56d13381f0414b5a835fd31960edfe6 Author: Nicolai Hähnle nicolai.haehnle@amd.com Date: Tue Apr 26 13:19:28 2016 -0500

st/mesa: implement PBO downloads for ReadPixels

v2: require PIPE_CAP_SAMPLER_VIEW_TARGET; technically only needed for some of the texture targets, but all hardware that has shader images should also have this cap.

I can provoke an oom on xorg as attached by displaying a couple of 1920 xwds with display from ImageMagick and flipping between then, plus some middle mouse clicking (which magnifys a section and gives info on the pixel clicked).

Oom is not instant - may take a couple of minutes clicking/flipping.

Polling free when doing this doesn't indicate any issue until it triggers so it's not slowly leaking, but goes quickly at some point filling swap then oom.