On Fri, Apr 8, 2016 at 12:47 AM, Alexandre Courbot <acourbot@xxxxxxxxxx> wrote: > Hi Robin, > > On 04/07/2016 08:50 PM, Robin Murphy wrote: >> >> Hello, >> >> With 4.6-rc2 (and -rc1) I'm seeing Nouveau blowing up at boot, from the >> look of it by dereferencing some offset from NULL inside >> nouveau_fbcon_imageblit(). My setup is an old XFX 7600GT card plugged >> into an ARM Juno r1 board, which works fine with 4.5 and earlier. >> >> Attached are a couple of logs from booting arm64 defconfig plus DRM and >> Nouveau enabled - the second also has framebuffer console rotation >> turned on, which interestingly seems to move the point of failure, and >> the display does eventually come up to show the tail end of the panic in >> that case. >> >> I might be able to find time for a full bisection next week if isn't >> something sufficiently obvious to anyone who knows this driver. > > > Looking at the log it is not clear to me what could be causing this. I can > boot 4.6-rc2 with a GM206 card without any issue. A bisect would indeed be > useful here. Presumably not on an arm64 board though. This is happening in the memcpy done somewhere in fbcon, when doing an OUT_RINGp if the backtrace is to be believed. This means that the fifo is somehow not writable, or not set, or ... something. Also note that it's a G73 (aka pre-G80), so very different paths being taken through the driver. -ilia _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
