https://bugzilla.kernel.org/show_bug.cgi?id=212293
Bug ID: 212293 Summary: [amdgpu] divide error: 0000 on resume from S3 Product: Drivers Version: 2.5 Kernel Version: 5.11.6 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: contact@scrumplex.net Regression: No
Created attachment 295869 --> https://bugzilla.kernel.org/attachment.cgi?id=295869&action=edit kernel log since resume
My system experiences a kernel panic when resuming from S3, coming from amdgpu. The GPU has to be in a specific state for this to happen. Mainly when my desktop environment turns off the screens after some inactivity, and subsequently suspends the system.
This issue only occurs with kernel versions 5.11.x. I could only reproduce this with KDE Plasma / KWin on Wayland, while testing KDE Plasma / KWin on Xorg and on Wayland (Xorg seems to work fine).
REPRODUCTION 1. Start KDE Plasma / KWin on Wayland 2. Set Screen Energy Saving "Switch off after" to a low value like 1min 3. Wait until Plasma has turned off screens 4. Suspend the system (via SSH for example) 5. Try to wake from sleep
SYSTEM INFO CPU: AMD Ryzen 9 3900X Mainboard: ASUS ROG STRIX B450-F GAMING II GPU: GIGABYTE Radeon RX VEGA 56 GAMING OC 8G
ATTACHMENTS I attached the kernel panic I could capture via ttyS0.
https://bugzilla.kernel.org/show_bug.cgi?id=212293
--- Comment #1 from Sefa Eyeoglu (contact@scrumplex.net) --- ADDITIONAL SYSTEM INFO OS: Arch Linux (with testing repos)
Kernels with this issue: 5.11.6.arch1, 5.11.6.zen1, 5.12rc2 (built from Arch Linux User Repository) Kernels without this issue: 5.10.23-1-lts
https://bugzilla.kernel.org/show_bug.cgi?id=212293
Alex Deucher (alexdeucher@gmail.com) changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #2 from Alex Deucher (alexdeucher@gmail.com) --- Can you bisect? https://www.kernel.org/doc/html/latest/admin-guide/bug-bisect.html
https://bugzilla.kernel.org/show_bug.cgi?id=212293
--- Comment #3 from Sefa Eyeoglu (contact@scrumplex.net) --- This took some time, as I apparently went wrong paths sometimes.
Anyways.
I bisected between tags v5.10 (good) and v5.11 (bad), while only looking at path "drivers/gpu/drm/amd".
At the end I landed at commit 12f4849a1cfd69f3c37cca042f2e9c512f923741 by Simon Ser (emersion).
I will do some debugging myself to see if it's the real deal, but that change might very well be it.
https://bugzilla.kernel.org/show_bug.cgi?id=212293
--- Comment #4 from Sefa Eyeoglu (contact@scrumplex.net) --- Created attachment 295887 --> https://bugzilla.kernel.org/attachment.cgi?id=295887&action=edit git bisect log
https://bugzilla.kernel.org/show_bug.cgi?id=212293
--- Comment #5 from Sefa Eyeoglu (contact@scrumplex.net) --- I was unable to add Simon Ser to CC
https://bugzilla.kernel.org/show_bug.cgi?id=212293
--- Comment #6 from Sefa Eyeoglu (contact@scrumplex.net) --- Okay I tried to debug it by printing.
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 573cf17262da..8e6b890ad611 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9271,6 +9271,8 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, return 0; }
+ printk("SCRUMPLEX_DEBUG %d %d %d %d", new_cursor_state->src_w, new_cursor_state->src_h, new_primary_state->src_w, new_primary_state->src_h); + cursor_scale_w = new_cursor_state->crtc_w * 1000 / (new_cursor_state->src_w >> 16); cursor_scale_h = new_cursor_state->crtc_h * 1000 /
https://bugzilla.kernel.org/show_bug.cgi?id=212293
--- Comment #7 from Sefa Eyeoglu (contact@scrumplex.net) --- I submitted a patch here: https://lists.freedesktop.org/archives/amd-gfx/2021-March/060754.html
https://bugzilla.kernel.org/show_bug.cgi?id=212293
Sefa Eyeoglu (contact@scrumplex.net) changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |CODE_FIX
--- Comment #8 from Sefa Eyeoglu (contact@scrumplex.net) --- Fixed in 5.11 and 5.12
dri-devel@lists.freedesktop.org
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