[Bug 99431] New: Xorg 1.19.1-1 completely crashes when using Intel graphics.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99431

            Bug ID: 99431
           Summary: Xorg 1.19.1-1 completely crashes when using Intel
                    graphics.
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: robert at indylix.nl
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Linux 4.8.13-1-ARCH x86_64
xorg-server 1.19.1-1

Since updating Xorg to 1.19.1-1 it core dumps multiple times a day. Multiple
users reporting this issue. Removing the xf86-video-intel driver and going back
to modesetting seems to make the problem slightly less. However some users
still have crashes then. So it seems to be something in Xorg. But seems to be
triggered randomly, haven't been able to pinpoint it to a specific action. Just
the entire DE/Xorg crashing and the screen going blank.

I was using two monitors (Laptop 2560x1600 + Monitor 2560x1440 connected via
HDMI). 

Full core dump:

Jan 16 10:50:04 systemd-coredump[6294]: Process 1600 (Xorg) of
user 0 dumped core.

                                                Stack trace of thread 1625:
                                                #0  0x00007fd21be25300 n/a
(intel_drv.so)
                                                #1  0x00007fd21be25d7d n/a
(intel_drv.so)
                                                #2  0x00000000004bb772 n/a
(Xorg)
                                                #3  0x0000000000582d13 n/a
(Xorg)
                                                #4  0x0000000000583b14
miPointerSetPosition (Xorg)
                                                #5  0x000000000044cece n/a
(Xorg)
                                                #6  0x000000000044d6d3 n/a
(Xorg)
                                                #7  0x000000000044ef7f
GetPointerEvents (Xorg)
                                                #8  0x000000000044f530
QueuePointerEvents (Xorg)
                                                #9  0x00007fd218cda3c5 n/a
(libinput_drv.so)
                                                #10 0x00007fd218cdaf90 n/a
(libinput_drv.so)
                                                #11 0x0000000000599a8c n/a
(Xorg)
                                                #12 0x000000000059c191 n/a
(Xorg)
                                                #13 0x00000000005998e6 n/a
(Xorg)
                                                #14 0x00007fd220996454
start_thread (libpthread.so.0)
                                                #15 0x00007fd2206d97df __clone
(libc.so.6)

                                                Stack trace of thread 1600:
                                                #0  0x00007fd22099ef1c
__lll_lock_wait (libpthread.so.0)
                                                #1  0x00007fd220998bb6
pthread_mutex_lock (libpthread.so.0)
                                                #2  0x00000000005997d0
input_lock (Xorg)
                                                #3  0x00000000004bbc56 n/a
(Xorg)
                                                #4  0x00000000004ba4c5 n/a
(Xorg)
                                                #5  0x00000000005833ab
miPointerUpdateSprite (Xorg)
                                                #6  0x00000000005835fa n/a
(Xorg)
                                                #7  0x00000000004c8de1 n/a
(Xorg)
                                                #8  0x0000000000515500 n/a
(Xorg)
                                                #9  0x000000000043f6c8 n/a
(Xorg)
                                                #10 0x0000000000440b07
WindowHasNewCursor (Xorg)
                                                #11 0x0000000000468860
ChangeWindowAttributes (Xorg)
                                                #12 0x00000000004305ed n/a
(Xorg)
                                                #13 0x00000000004368d5 n/a
(Xorg)
                                                #14 0x000000000043a858 n/a
(Xorg)
                                                #15 0x00007fd220611291
__libc_start_main (libc.so.6)
                                                #16 0x000000000042453a _start
(Xorg)

                                                Stack trace of thread 1617:
                                                #0  0x00007fd22099c10f
pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                                #1  0x00007fd21be69709 n/a
(intel_drv.so)
                                                #2  0x00007fd220996454
start_thread (libpthread.so.0)
                                                #3  0x00007fd2206d97df __clone
(libc.so.6)
-- Subject: Process 1600 (Xorg) dumped core
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/li … temd-devel
-- Documentation: man:core(5)
-- 
-- Process 1600 (Xorg) crashed and dumped core.
-- 
-- This usually indicates a programming error in the crashing program and
-- should be reported to its vendor as a bug.

More information of arch linux users running into this issue:
https://bbs.archlinux.org/viewtopic.php?id=221888
https://bbs.archlinux.org/viewtopic.php?id=221958

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