https://bugzilla.kernel.org/show_bug.cgi?id=212957
Bug ID: 212957 Summary: [radeon] kernel NULL pointer dereference during system boot Product: Drivers Version: 2.5 Kernel Version: 5.12.1 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: mail@dennisfoster.us Regression: No
Created attachment 296657 --> https://bugzilla.kernel.org/attachment.cgi?id=296657&action=edit journalctl
GPU: Radeon RX 470 + ATI FirePro 2270
Cannot boot into graphical session with recent kernel 5.12.1, the system gets stuck at black screen.
May 05 16:38:58 homeserver kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000
Could be possible regression of https://bugzilla.kernel.org/show_bug.cgi?id=212137
https://bugzilla.kernel.org/show_bug.cgi?id=212957
Alex Deucher (alexdeucher@gmail.com) changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #1 from Alex Deucher (alexdeucher@gmail.com) --- Can you bisect?
https://bugzilla.kernel.org/show_bug.cgi?id=212957
Arvin (arvin.kebob@gmail.com) changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |arvin.kebob@gmail.com
--- Comment #2 from Arvin (arvin.kebob@gmail.com) --- I can confirm I have a similar issue on a laptop with AMD dual GPU (6520G + HD 6750M). The system boots to a graphical desktop (MATE + LightDM) and works fine until I open a program with the discrete graphics (DRI_PRIME=1).
Going to bisect once I get the laptop later in the day.
https://bugzilla.kernel.org/show_bug.cgi?id=212957
--- Comment #3 from Dennis Foster (mail@dennisfoster.us) --- (In reply to Alex Deucher from comment #1)
Can you bisect?
0575ff3d33cd62123991d2a5d0d8459d72592388 is the first bad commit commit 0575ff3d33cd62123991d2a5d0d8459d72592388 Author: Christian König christian.koenig@amd.com Date: Thu Oct 8 13:01:35 2020 +0200
drm/radeon: stop using pages with drm_prime_sg_to_page_addr_arrays v2
This is deprecated.
v2: also use ttm_sg_tt_init to avoid allocating the page array.
Signed-off-by: Christian König christian.koenig@amd.com Acked-by: Daniel Vetter daniel.vetter@ffwll.ch Link: https://patchwork.freedesktop.org/patch/403832/
drivers/gpu/drm/radeon/radeon_ttm.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
I wasn't able to revert this commit on v5.12, because there's another commit c67e62790f5c156705fb162da840c6d89d0af6e0 where it seems like that file was changed drastically, in particular drm_prime_sg_to_page_addr_arrays() was replaced with drm_prime_sg_to_dma_addr_array().
https://bugzilla.kernel.org/show_bug.cgi?id=212957
--- Comment #4 from Dennis Foster (mail@dennisfoster.us) --- Created attachment 296723 --> https://bugzilla.kernel.org/attachment.cgi?id=296723&action=edit journalctl - bad commit
Attached is a part of the system log after checking out the bisected commit.
https://bugzilla.kernel.org/show_bug.cgi?id=212957
Dennis Foster (mail@dennisfoster.us) changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |PATCH_ALREADY_AVAILABLE
--- Comment #5 from Dennis Foster (mail@dennisfoster.us) --- The issue is now resolved in kernel version 5.12.7
Link to the patch commit: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=l...
dri-devel@lists.freedesktop.org
-
bugzilla-daemon＠bugzilla.kernel.org