ok, thanks to Maarten's debugging we've found the issue. listener->grab is not copied but rather referenced, leaving the grab stale once it was deleted. Reproducible test case is simply:
XGrabButton() pointer-emulating touch down XUngrabButton() trigger touch update/end This doesn't necessarily crash, but once you run through valgrind to reset memory after freeing it we have a reliable crasher. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1068994 Title: button1 gets stuck after a while To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1068994/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
