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ff055506f0
xserver-multidpi/dix
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Peter Hutterer ff055506f0 dix: fix crash when removing devices on a buttonless MD pointer (#29669) 
If the master does not have a button class, recalculating the number of
buttons required for this master dereferences a NULL pointer. Guard against
this, if the master pointer doesn't have a button class, it doesn't need to
update it's number of buttons.

Reproducible:
Two devices on the same master, device NB with axes but no buttons, device
A+B with axes and button .
If NB was the last one to send an event through the master when A+B is
removed from the server, master->button is NULL and leads to the above
NULL-pointer dereference.

X.Org Bug 29669 <http://bugs.freedesktop.org/show_bug.cgi?id=29669>

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
2010-09-02 16:12:52 +10:00
..
.gitignore .gitignore: use common defaults with custom section #24239 2009-11-11 21:40:20 -08:00
atom.c Misc coding style cleanup 2010-05-13 06:16:48 +07:00
buildatoms XFree86 4.3.0.1 2003-11-14 16:49:22 +00:00
BuiltInAtoms R6.6 is the Xorg base-line 2003-11-14 15:54:54 +00:00
colormap.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
cursor.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
deprecated.c dix: remove dixLookupResource - we don't have any users left. 2009-09-07 10:51:16 +10:00
devices.c dix: fix crash when removing devices on a buttonless MD pointer (#29669) 2010-09-02 16:12:52 +10:00
dispatch.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
dispatch.h Remove RCS tags. Fix Xprint makefile braindamage. 2006-07-21 17:56:00 -04:00
dixfonts.c fonts: Fix refcounting for asynchronous font operations (#3040) 2010-08-09 21:31:41 -07:00
dixutils.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
enterleave.c dix: hack around enter/leave event issues for grabbed devices (#27804) 2010-07-21 08:11:27 +10:00
enterleave.h dix: call SetFocusOut and LeaveWindow when disabling a device. 2009-08-03 10:11:48 +10:00
eventconvert.c dix: don't create core motion events for non-x/y valuators. 2010-09-01 14:42:44 +10:00
events.c dix: purge leftover manual key down bit setting. 2010-07-07 13:29:46 +10:00
extension.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
ffs.c Rework symbol visibility for easier maintenance 2008-12-03 05:43:34 -02:00
gc.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
getevents.c dix: copy the valuators passed into GPE/GKVE/GProxE. 2010-08-18 13:10:54 -07:00
globals.c Change the devPrivates API to require dixRegisterPrivateKey 2010-06-05 19:23:03 -07:00
glyphcurs.c Replace dixChangeGC with calls directly to the right variant. 2010-05-13 17:14:07 -07:00
grabs.c Remove more superfluous if(p) checks around free(p) 2010-06-06 20:27:18 +07:00
initatoms.c Rework symbol visibility for easier maintenance 2008-12-03 05:43:34 -02:00
inpututils.c Return Success from generate_modkeymap() when max_keys_per_mod is zero 2010-09-01 14:44:46 +10:00
main.c Initialize dev privates before using any 2010-06-30 12:25:08 -04:00
Makefile.am Move mi/miregion.c to dix/region.c 2010-06-05 17:48:20 -07:00
pixmap.c Change the devPrivates API to require dixRegisterPrivateKey 2010-06-05 19:23:03 -07:00
privates.c Add dixCreatePrivateKey API 2010-06-05 19:31:37 -07:00
property.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
protocol.txt Add DRI2 requests to protocol.txt 2009-08-28 23:29:05 -04:00
ptrveloc.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
region.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
registry.c Replace X-allocation functions with their C89 counterparts 2010-05-13 00:22:37 +07:00
resource.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
selection.c Change the devPrivates API to require dixRegisterPrivateKey 2010-06-05 19:23:03 -07:00
swaprep.c Replace X-allocation functions with their C89 counterparts 2010-05-13 00:22:37 +07:00
swapreq.c Remove unnecessary parentheses around return values in functions 2010-06-10 06:42:42 -07:00
tables.c Remove #define NEED_EVENTS and NEED_REPLIES 2008-12-12 11:43:32 +10:00
window.c dix: reset pScreen->root to NULL when root window is deleted. 2010-08-16 11:50:22 -07:00
Xserver-dtrace.h.in Update Sun license notices to current X.Org standard form 2009-12-16 17:11:35 -08:00
Xserver.d Update Sun license notices to current X.Org standard form 2009-12-16 17:11:35 -08:00