Arch Linux

king_radical

Member

Registered: 2015-03-09

Posts: 2

AMDGPU and linux-grsec don't play nice together

I've been having this problem for a while, and apparently nobody else on Earth has it.

Whenever I boot into the linux-grsec kernel, it boots correctly but drops to a blank screen. I'm pretty sure I have identified the problem:

kernel: PAX: size overflow detected in function ttm_bo_handle_move_mem drivers/gpu/drm/ttm/ttm_bo.c:388 cicus.459_185 max, count: 5, decl: offset; num: 0; context: ttm_buffer_object;

call trace here https://0x0.st/yoV.txt

The graphics card is an R9 380, or more accurately:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tonga PRO [Radeon R9 285/380] (rev f1)

Is this a problem with AMDGPU, PAX, or the card? I can't tell.

Last edited by king_radical (2017-03-07 09:23:06)

Lone_Wolf

Forum Moderator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,920

Re: AMDGPU and linux-grsec don't play nice together

It appears to be an issue between PAX and the kernel.

thread on grsec forum
kernel bug 194579

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

(A works at time B)  && (time C > time B ) ≠  (A works at time C)

king_radical

Member

Registered: 2015-03-09

Posts: 2

Re: AMDGPU and linux-grsec don't play nice together

Thank you! Now at least I know what the problem is.