On Tue, Mar 24, 2015 at 10:34 AM, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Tue, Mar 24, 2015 at 10:22:30AM -0400, Josh Boyer wrote: >> On Tue, Mar 24, 2015 at 9:57 AM, Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> wrote: >> > On Tue, Mar 24, 2015 at 9:40 AM, Daniel Vetter <daniel@xxxxxxxx> wrote: >> >> On Tue, Mar 24, 2015 at 09:15:32AM -0400, Josh Boyer wrote: >> >>> On Tue, Mar 24, 2015 at 3:32 AM, Daniel Vetter <daniel@xxxxxxxx> wrote: >> >>> > On Mon, Mar 23, 2015 at 02:34:27PM -0400, Josh Boyer wrote: >> >>> >> On Mon, Mar 23, 2015 at 11:33 AM, Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> wrote: >> >>> >> >> >>> >> <snip> >> >>> >> >> >>> >> >> Xi Ruoyao (1): >> >>> >> >> drm/i915: Ensure plane->state->fb stays in sync with plane->fb >> >>> >> >> >>> >> Turns out to be that commit. >> >>> >> >> >>> >> git bisect start 'drivers/gpu/drm/i915/' >> >>> >> # good: [b314acaccd7e0d55314d96be4a33b5f50d0b3344] Merge branch >> >>> >> 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input >> >>> >> git bisect good b314acaccd7e0d55314d96be4a33b5f50d0b3344 >> >>> >> # bad: [bc465aa9d045feb0e13b4a8f32cc33c1943f62d6] Linux 4.0-rc5 >> >>> >> git bisect bad bc465aa9d045feb0e13b4a8f32cc33c1943f62d6 >> >>> >> # bad: [319c1d420a0b62d9dbb88104afebaabc968cdbfa] drm/i915: Ensure >> >>> >> plane->state->fb stays in sync with plane->fb >> >>> >> git bisect bad 319c1d420a0b62d9dbb88104afebaabc968cdbfa >> >>> >> # first bad commit: [319c1d420a0b62d9dbb88104afebaabc968cdbfa] >> >>> >> drm/i915: Ensure plane->state->fb stays in sync with plane->fb >> >>> >> >> >>> >> Doing a straight revert on top of 4.0-rc5 makes things work again, >> >>> >> albeit with the WARN_ON(obj->frontbuffer_bits) splat still being >> >>> >> there. >> >>> > >> >>> > Can you please test the tip of drm-fixes: >> >>> > >> >>> > commit 8218c3f4df3bb1c637c17552405039a6dd3c1ee1 >> >>> > Author: Daniel Vetter <daniel.vetter@xxxxxxxx> >> >>> > Date: Fri Feb 27 12:58:13 2015 +0100 >> >>> > >> >>> > drm: Fixup racy refcounting in plane_force_disable >> >>> > >> >>> > http://cgit.freedesktop.org/~airlied/linux/commit/?h=drm-fixes&id=8218c3f4df3bb1c637c17552405039a6dd3c1ee1 >> >>> > >> >>> > Because fumble that patch didn't make it to drm-fixes a while ago and >> >>> > instead landed in drm-next. >> >>> >> >>> That seems to have helped with totally different issues a macbook I >> >>> have was seeing. However, it still doesn't fix the issue with the >> >>> Celeron based NUC machine. >> >>> >> >>> I built a kernel based on Linus' latest tree as of this morning, >> >>> without reverting 319c1d4 and adding the commit you pointed to. The >> >>> NUC still won't boot without HDMI connected. With HDMI connected I >> >>> still see the trace below. If I do the blacklist and then insmod >> >>> dance with HDMI unplugged it shows the same spew I reported yesterday >> >>> which starts with the same backtrace. >> >>> >> >>> I'll try building a kernel with 319c1d4 reverted + your patch. I >> >>> suspect things will work fine with that combination because the two >> >>> issues are unrelated. >> >> >> >> Can you please boot with drm.debug=0xff for the below case and grab >> >> complete dmesg? There'll be a lot of crap in the logs, you might need to >> >> blow up the logbuf size massively. But that log should contain everything >> >> I need to figure out where that framebuffer we're blowing up on is going. >> > >> > I provided both with HDMI attached and without (via insmod). If you >> > want them emailed directly let me know, but they were large. >> > >> > Boot with drm.debug=0xff and HDMI connected: >> > >> > https://jwboyer.fedorapeople.org/pub/drm-ff-dmesg.txt >> > >> > Boot with drm.debug=0xff without HDMI connected and i915 loaded via >> > manual insmod after boot: >> > >> > https://jwboyer.fedorapeople.org/pub/drm-ff-no-hdmi-insmod.txt >> >> Here's one more from the macbook I mentioned. It's showing the same >> kref.h splat: >> >> https://jwboyer.fedorapeople.org/pub/drm-ff-macbook.txt > > Ok there's at least one fixup for which we've failed to apply when porting > the fb refcounting fix from -next. Can you please cherry-pick > > commit f55548b5af87ebfc586ca75748947f1c1b1a4a52 > Author: Damien Lespiau <damien.lespiau@xxxxxxxxx> > Date: Thu Feb 5 18:30:20 2015 +0000 > > drm/i915: Don't try to reference the fb in get_initial_plane_config() > > From linux-next? Yes, building now. Will let you know as soon as I test it on both machines. josh _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
