https://bugzilla.kernel.org/show_bug.cgi?id=119861
Bug ID: 119861 Summary: Kernel BUG() when Xorg server is started Product: Drivers Version: 2.5 Kernel Version: 4.7-rc2 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: demfloro@demfloro.ru Regression: No
Created attachment 219391 --> https://bugzilla.kernel.org/attachment.cgi?id=219391&action=edit dmesg
OS: Archlinux, Video adapter: NVIDIA GeForce GTX 780 Ti, xf86-nouveau version: 1.0.12
When I run startx BUG: unable to handle kernel NULL pointer dereference appers in dmesg and screen stays black. Problem appeared in 4.7 kernel, previous kernels work fine.
https://bugzilla.kernel.org/show_bug.cgi?id=119861
--- Comment #1 from Dmitrii Tcvetkov demfloro@demfloro.ru --- Created attachment 219401 --> https://bugzilla.kernel.org/attachment.cgi?id=219401&action=edit Xorg.0.log
https://bugzilla.kernel.org/show_bug.cgi?id=119861
--- Comment #2 from Dmitrii Tcvetkov demfloro@demfloro.ru --- Created attachment 219411 --> https://bugzilla.kernel.org/attachment.cgi?id=219411&action=edit Xorg.conf
https://bugzilla.kernel.org/show_bug.cgi?id=119861
Dmitrii Tcvetkov demfloro@demfloro.ru changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #219391|application/octet-stream |text/plain mime type| |
https://bugzilla.kernel.org/show_bug.cgi?id=119861
Dmitrii Tcvetkov demfloro@demfloro.ru changed:
What |Removed |Added ---------------------------------------------------------------------------- Summary|Kernel BUG() when Xorg |Kernel BUG() when Xorg |server is started |server is started using | |nouveau
https://bugzilla.kernel.org/show_bug.cgi?id=119861
--- Comment #3 from Dmitrii Tcvetkov demfloro@demfloro.ru --- Created attachment 219421 --> https://bugzilla.kernel.org/attachment.cgi?id=219421&action=edit kernel config
https://bugzilla.kernel.org/show_bug.cgi?id=119861
Dmitrii Tcvetkov demfloro@demfloro.ru changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #219421|application/octet-stream |text/plain mime type| |
https://bugzilla.kernel.org/show_bug.cgi?id=119861
Lucas Stach dev@lynxeye.de changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |dev@lynxeye.de
--- Comment #4 from Lucas Stach dev@lynxeye.de --- Probably the same bug as seen on imx-drm by Philipp and fixed with the following 2 patches: https://patchwork.kernel.org/patch/9151037/ https://patchwork.kernel.org/patch/9151039/
Please test if those also fix this bug. Thanks.
https://bugzilla.kernel.org/show_bug.cgi?id=119861
Dmitrii Tcvetkov demfloro@demfloro.ru changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |PATCH_ALREADY_AVAILABLE
--- Comment #5 from Dmitrii Tcvetkov demfloro@demfloro.ru --- (In reply to Lucas Stach from comment #4)
Probably the same bug as seen on imx-drm by Philipp and fixed with the following 2 patches: https://patchwork.kernel.org/patch/9151037/ https://patchwork.kernel.org/patch/9151039/
Please test if those also fix this bug. Thanks.
Thanks, the patch helps on 4.7-rc2, Xorg starts like with 4.6 without errors in dmesg.
Although 4.7-rc3 panics with same .config even without the patch (I can't see anything on screen and I assume it's a panic because kernel reacts on panic= parameter). Looks like it is another issue. I'll make separate report when get any info with netconsole.
https://bugzilla.kernel.org/show_bug.cgi?id=119861
Dmitrii Tcvetkov demfloro@demfloro.ru changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |CLOSED
--- Comment #6 from Dmitrii Tcvetkov demfloro@demfloro.ru --- commit fffc5f59f2c68ca859c3f92b224393ed3adbe1ca Author: Philipp Zabel p.zabel@pengutronix.de Date: Thu Jun 2 19:27:51 2016 +0200
drm/crtc: fix connector reference counting mismatch in drm_crtc_helper_set_config
dri-devel@lists.freedesktop.org