Red Hat Bugzilla – Bug 607045
DGA client can crash the server
Last modified: 2010-11-10 16:59:04 EST
Created attachment 426141 [details] dga crash test Description of problem: A DGA client registering for pointer events can crash the server if the device moved is a floating slave device. Version-Release number of selected component (if applicable): xorg-x11-server-1.7.7-11.el6 How reproducible: If a floating slave generates pointer events while a DGA client has selected for input, a null-pointer dereference causes a server crash. Steps to Reproduce: 1. find the name of a pointer device on your machine (xinput --list) 2. float the device (xinput --float <device name>) 3. compile and run the attached dga.c test program. 4. Move the device, server crashes. Additional info: Some pointer devices have keys attached to them (evtest on the device file will show this). Good devices to test are standalone USB mice (not from mouse/keyboard combos) or the trackstick found on Lenovo laptops.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux major release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Major release. This request is not yet committed for inclusion.
MODIFIED xorg-x11-server-1.7.7-16.el6 is available in brew.
following comment 0 steps: 1. xinput --float "Dell Dell USB Optical Mouse" 2. compilation and executing of dga.c (have to use -lX11 -lXxf86dga) 3. mouse movements done results: no crash -> VERIFIED
Red Hat Enterprise Linux 6.0 is now available and should resolve the problem described in this bug report. This report is therefore being closed with a resolution of CURRENTRELEASE. You may reopen this bug report if the solution does not work for you.