[Bug 101055] All GL programs segfault: i915_state_derived.c:calculate_vertex_layout: i915->fs == 0

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=101055

            Bug ID: 101055
           Summary: All GL programs segfault:
                    i915_state_derived.c:calculate_vertex_layout: i915->fs
                    == 0
           Product: Mesa
           Version: 17.1
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/i915
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: creideiki+freedesktop-bugzilla@ferretporn.se
        QA Contact: dri-devel@lists.freedesktop.org

I'm trying to reinstall an old laptop (Lenovo Thinkpad X60, with a Core 2 Duo
CPU) with a modern Gentoo Linux, but have run into a problem where every
program trying to use OpenGL segfaults immediately. This makes running e.g. KDE
5 a bit difficult. TWM works, though, so I can get X, just not OpenGL.

Here's what GDB thinks of glxgears, but every other program I've managed to
debug crashes in the same way:



(gdb) run
Starting program: /usr/bin/glxgears 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.

Program received signal SIGSEGV, Segmentation fault.
calculate_vertex_layout (i915=0x616310) at
/var/tmp/portage/media-libs/mesa-17.1.0/work/mesa-17.1.0/src/gallium/drivers/i915/i915_state_derived.c:72
72         for (i = 0; i < fs->info.num_inputs; i++) {
(gdb) bt
#0  calculate_vertex_layout (i915=0x616310) at
/var/tmp/portage/media-libs/mesa-17.1.0/work/mesa-17.1.0/src/gallium/drivers/i915/i915_state_derived.c:72
#1  0x00007ffff41fd016 in i915_update_derived (i915=i915@entry=0x616310)
    at
/var/tmp/portage/media-libs/mesa-17.1.0/work/mesa-17.1.0/src/gallium/drivers/i915/i915_state_derived.c:221
#2  0x00007ffff41ef31a in i915_clear_render (pipe=0x616310, buffers=5,
color=0x7ffff7fd0b4c, depth=1, stencil=0)
    at
/var/tmp/portage/media-libs/mesa-17.1.0/work/mesa-17.1.0/src/gallium/drivers/i915/i915_clear.c:254
#3  0x00007ffff3f56d71 in st_Clear (ctx=0x7ffff7fcf010, mask=18) at
/var/tmp/portage/media-libs/mesa-17.1.0/work/mesa-17.1.0/src/mesa/state_tracker/st_cb_clear.c:481
#4  0x000000000040251e in draw () at glxgears.c:254
#5  0x0000000000401ce8 in draw_gears () at glxgears.c:316
#6  draw_frame (win=18874370, dpy=0x606010) at glxgears.c:341
#7  event_loop (win=18874370, dpy=0x606010) at glxgears.c:703
#8  main (argc=<optimized out>, argv=<optimized out>) at glxgears.c:798
(gdb) print fs
$1 = (const struct i915_fragment_shader *) 0x0

"fs" comes almost directly from the function argument:

   static void calculate_vertex_layout(struct i915_context *i915)
   {
      const struct i915_fragment_shader *fs = i915->fs;
   [...]

Then, in the for() loop, trying to dereference "fs" when it is a null pointer
is obviously a bad thing.


Hardware:

~ # lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
~ # grep Chipset: /var/log/Xorg.0.log
[  4671.977] (--) intel(0): Integrated Graphics Chipset: Intel(R) 945GM
~ # grep name /proc/cpuinfo
model name      : Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz
model name      : Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz


Software:

~ # emerge --info media-libs/mesa 
Portage 2.3.5 (python 3.4.6-final-0, default/linux/amd64/13.0, gcc-6.3.0,
glibc-2.24-r1, 4.11.0-gentoo x86_64)
=================================================================
                         System Settings
=================================================================
System uname:
Linux-4.11.0-gentoo-x86_64-Intel-R-_Core-TM-2_CPU_T7200_@_2.00GHz-with-gentoo-2.3
KiB Mem:     3068136 total,   1191300 free
KiB Swap:    8388604 total,   8388604 free
Timestamp of repository gentoo: Mon, 15 May 2017 21:15:01 +0000
sh bash 4.4_p12
ld GNU ld (Gentoo 2.26.1 p1.0) 2.26.1
app-shells/bash:          4.4_p12::gentoo
dev-lang/perl:            5.24.1-r1::gentoo
dev-lang/python:          2.7.13::gentoo, 3.4.6::gentoo
dev-util/cmake:           3.8.1::gentoo
dev-util/pkgconfig:       0.29.2::gentoo
sys-apps/baselayout:      2.3::gentoo
sys-apps/openrc:          0.26.1::gentoo
sys-apps/sandbox:         2.10-r4::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69-r3::gentoo
sys-devel/automake:       1.12.6-r1::gentoo, 1.13.4-r1::gentoo, 1.15-r2::gentoo
sys-devel/binutils:       2.26.1::gentoo, 2.27::gentoo
sys-devel/gcc:            6.3.0::gentoo
sys-devel/gcc-config:     1.8-r1::gentoo
sys-devel/libtool:        2.4.6-r4::gentoo
sys-devel/make:           4.2.1-r1::gentoo
sys-kernel/linux-headers: 4.10::gentoo (virtual/os-headers)
sys-libs/glibc:           2.24-r1::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.europe.gentoo.org/gentoo-portage
    priority: -1000

creideiki
    location: /usr/local/portage
    masters: gentoo
    priority: 0

torbrowser
    location: /var/lib/layman/torbrowser
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe -ggdb"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d
/etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild
/etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d
/etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-march=native -O2 -pipe -ggdb"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--alphabetical --keep-going --quiet-build=n
--verbose-conflicts"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified
distlocks ebuild-locks fixlafiles merge-sync news nostrip parallel-fetch
parallel-install preserve-libs protect-owned sandbox sfperms strict
unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv
usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://gentoo.oregonstate.edu
http://www.ibiblio.org/pub/Linux/distributions/gentoo"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-O1 -Wl,--hash-style=gnu
-Wl,--enable-new-dtags"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times
--omit-dir-times --compress --force --whole-file --delete --stats
--human-readable --timeout=180 --exclude=/distfiles --exclude=/local
--exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
USE="X acl alsa amd64 berkdb bzip2 cli cracklib crypt cups cxx dbus dri egl
emacs flac fortran gdbm gif iconv ipv6 jpeg kde lm_sensors modules mp3 multilib
ncurses nls nptl ogg opengl openmp pam pcre png qt5 readline seccomp session
ssl tcpd tiff truetype unicode vorbis x264 xattr zlib" ABI_X86="64"
ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x
ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3
trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core
authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon
authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile
authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock
deflate dir disk_cache env expires ext_filter file_cache filter headers include
info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif
speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi
words flow plan sheets stage tables krita karbon braindump author"
COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog"
CPU_FLAGS_X86="mmx mmxext sse sse2 sse3 ssse3" ELIBC="glibc"
GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock
isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2
rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx"
GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev keyboard libinput mouse wacom"
KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001
mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console
presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6"
PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python2_7 python3_4"
RUBY_TARGETS="ruby23 ruby24" USERLAND="GNU" VIDEO_CARDS="intel i915"
XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface
geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac
delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL,
PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS,
PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON

=================================================================
                        Package Settings
=================================================================

media-libs/mesa-17.1.0::gentoo was built with the following:
USE="-bindist classic -d3d9 -debug dri3 egl gallium gbm -gles1 -gles2 llvm nptl
-opencl -openmax -osmesa -pax_kernel -pic (-selinux) -unwind -vaapi -valgrind
-vdpau -vulkan wayland -xa -xvmc" ABI_X86="-32 64 -x32" VIDEO_CARDS="-freedreno
i915 -i965 -imx intel -nouveau -r100 -r200 -r300 -r600 -radeon -radeonsi -vc4
-vivante -vmware"

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