glamor_create_pixmap() would return a NullPixmap if the given size is larger than the maximum size of a pixmap. But glamor_get_pixmap_texture() won't check if the given pixmap is non-null, leading to a segfault if glamor_create_pixmap() failed. This can be reproduced by passing Xephyr a very large screen width, e.g.: $ Xephyr -glamor -screen 32768x1024 :10 (EE) (EE) Backtrace: (EE) 0: Xephyr (OsSigHandler+0x29) (EE) 1: /lib64/libpthread.so.0 (__restore_rt+0x0) (EE) 2: Xephyr (glamor_get_pixmap_texture+0x30) (EE) 3: Xephyr (ephyr_glamor_create_screen_resources+0xc6) (EE) 4: Xephyr (ephyrCreateResources+0x98) (EE) 5: Xephyr (dix_main+0x275) (EE) 6: /lib64/libc.so.6 (__libc_start_main+0xf1) (EE) 7: Xephyr (_start+0x2a) (EE) 8: ? (?+0x2a) [0x2a] (EE) (EE) Segmentation fault at address 0x0 (EE) Fatal server error: (EE) Caught signal 11 (Segmentation fault). Server aborting (EE) Aborted (core dumped) Bugzilla: https://bugzilla.redhat.com/1431633 Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Olivier Fourdan <ofourdan@redhat.com> |
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composite | ||
config | ||
damageext | ||
dbe | ||
dix | ||
doc | ||
dri3 | ||
exa | ||
fb | ||
glamor | ||
glx | ||
hw | ||
include | ||
m4 | ||
man | ||
mi | ||
miext | ||
os | ||
present | ||
pseudoramiX | ||
randr | ||
record | ||
render | ||
test | ||
Xext | ||
xfixes | ||
Xi | ||
xkb | ||
.dir-locals.el | ||
.gitignore | ||
autogen.sh | ||
configure.ac | ||
COPYING | ||
devbook.am | ||
docbook.am | ||
fix-miregion | ||
fix-miregion-private | ||
fix-patch-whitespace | ||
fix-region | ||
Makefile.am | ||
manpages.am | ||
README | ||
xorg-server.m4 | ||
xorg-server.pc.in | ||
xserver.ent.in |
X Server The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into. Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders. For a comprehensive overview of X Server and X Window System, consult the following article: http://en.wikipedia.org/wiki/X_server All questions regarding this software should be directed at the Xorg mailing list: http://lists.freedesktop.org/mailman/listinfo/xorg Please submit bug reports to the Xorg bugzilla: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg The master development code repository can be found at: git://anongit.freedesktop.org/git/xorg/xserver http://cgit.freedesktop.org/xorg/xserver For patch submission instructions, see: http://www.x.org/wiki/Development/Documentation/SubmittingPatches For more information on the git code manager, see: http://wiki.x.org/wiki/GitPage