Package: xserver-xorg-video-intel Version: 2:2.99.917+git20161105-1 Severity: important Tags: patch upstream Control: retitle -1 segfaults due to missing NULL check in has_connector_backlight
This looks like [1] was reached with dir being NULL, though since you don't have debugging symbols (and I don't know/can't seem to work out what address intel_drv.so was loaded at) I can't know for sure. Having said that, this is the only place where the result of readdir is not checked for NULL, so I don't know how else this would happen. This bug was introduced by [2]. Can you please try the attached patch? Whether or not this is the problem, I'll forward it upstream. Regards, James [1] https://sources.debian.net/src/xserver-xorg-video-intel/2:2.99.917%2Bgit20161105-1%7Ebpo8%2B1/src/sna/sna_display.c/#L1036 [2] https://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/325570e731b5819e28ce6bae72242914bb2d7f8e > On 5 Dec 2016, at 10:25, Micha vor dem Berge > <micha.vordembe...@christmann.info> wrote: > > Hi all, > > > I recently upgraded my xserver-xorg-video-intel package to the newest > jessie-backports (version 2:2.99.917+git20161105-1~bpo8+1). After a reboot, X > doesn't start anymore. I used this package from backports for several months, > so the newest update must have caused the trouble, I think. > > After a downgrade to jessie stable (version 2:2.21.15-2+b2) X is starting > fine again, but I have no HW acceleration... :( > > > Please find attached the Xorg.log. > > Just for information: I'm using Linux Mint Debian Edition, so my desktop is > Cinnamon. And I compiled my own kernel (which was no problem in the past). I > also tried some of my older kernels of the 4.8.x kernel series - just to be > sure that the problem is not introduced by the newest kernel upgrade. > > > Best regards, > > Micha > > > > PS: Please keep me in the loop when discussing this error as I didn't > subscribe to the backports mailing-list. Thanks! > <Xorg.0.log.old>
