Bug 36120

Summary:	Conditional jump or move depends on uninitialised value(s)
Product:	xorg	Reporter:	Zdenek Kabelac <zdenek.kabelac>
Component:	Server/Input/Core	Assignee:	Peter Hutterer <peter.hutterer>
Status:	RESOLVED WONTFIX	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium
Version:	7.6 (2010.12)
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Zdenek Kabelac 2011-04-10 14:42:49 UTC

Valgrind found this:

Conditional jump or move depends on uninitialised value(s)
   at 0x4357A1: GetEventMask (events.c:454)
   by 0x43B9E8: DeliverEventsToWindow (events.c:2029)
   by 0x4E0C59: SendEventToAllWindows (exevents.c:2125)
   by 0x4E8301: XISendDeviceHierarchyEvent (xichangehierarchy.c:118)
   by 0x426F99: DisableDevice (devices.c:507)
   by 0x46BF72: xf86Wakeup (xf86Events.c:457)
   by 0x432ABA: WakeupHandler (dixutils.c:419)
   by 0x45B708: WaitForSomething (WaitFor.c:235)
   by 0x42E8D9: Dispatch (dispatch.c:367)
   by 0x422DC9: main (main.c:287)
 Uninitialised value was created by a stack allocation
   at 0x4E8190: XISendDeviceHierarchyEvent (xichangehierarchy.c:61)

Conditional jump or move depends on uninitialised value(s)
   at 0x43BB78: DeliverEventsToWindow (events.c:2010)
   by 0x4DDEEA: FindInterestedChildren (exevents.c:2103)
   by 0x4DDEFF: FindInterestedChildren (exevents.c:2104)
   by 0x4DDEFF: FindInterestedChildren (exevents.c:2104)
   by 0x4DDEFF: FindInterestedChildren (exevents.c:2104)
   by 0x4DDEFF: FindInterestedChildren (exevents.c:2104)
   by 0x4E0C6F: SendEventToAllWindows (exevents.c:2127)
   by 0x4E8301: XISendDeviceHierarchyEvent (xichangehierarchy.c:118)
   by 0x426F99: DisableDevice (devices.c:507)
   by 0x46BF72: xf86Wakeup (xf86Events.c:457)
   by 0x432ABA: WakeupHandler (dixutils.c:419)
   by 0x45B708: WaitForSomething (WaitFor.c:235)
 Uninitialised value was created by a stack allocation
   at 0x4E8190: XISendDeviceHierarchyEvent (xichangehierarchy.c:61)


I assume  dummyDev is not properly initialized - thus IsMaster() function which is access  dev->type is reading some uninitialized var from stack in XISendDeviceHierarchyEvent().

Should be probably easily fixed by adding line:

dummyDev.type = 0; (or something else ??)


xorg-x11-drv-synaptics-1.4.0-1.fc16.x86_64
xorg-x11-server-Xorg-1.10.0-7.fc15.x86_64

Comment 1 Peter Hutterer 2016-11-28 04:39:52 UTC

This is a mass change of bugs. Bugs assigned to me that haven't been updated in the last 3 years are closed as WONTFIX, because, well, let's at least be honest about it.

Please do not re-open unless you have a really good reason to do so (e.g. you're fixing it yourself). If it hasn't been fixed in the last 3 years, it probably won't be fixed anytime soon either. Sorry.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.