From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 172381] New: nouveau kernel module leaks memory on hibernate.
Date: Tue, 20 Sep 2016 22:33:23 +0000 [thread overview]
Message-ID: <bug-172381-2300@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=172381
Bug ID: 172381
Summary: nouveau kernel module leaks memory on hibernate.
Product: Drivers
Version: 2.5
Kernel Version: 4.8rc6
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: me@hussam.eu.org
Regression: No
On hibernate, it seems that nouveau pushes vram into physical ram instead of
swap (possibly on the assumption that it is going to be swaped to disk on
hibernation).
In my case, I have 4GB physical ram and vram = 2GB.
- Hibernate only works if amount of physical ram in use is less than 2G (4 -
2 = 2), otherwise I get an "error -12 creating hibernation image" "PM: Not
enough free memory".
- If hibernate works, on resume, vram is not freed from physical memory.
rmmoding nouveau frees 500+ MB of physical ram.
- So far, I have reproduced this on kernels 4.4 to 4.8rc6 (I have not
attempted older kernels).
- Cards tested are 630GT (fermi) and 730GT (kepler).
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