[Ubuntu-x-swat] [Bug 635523] Re: Xephyr crashed with SIGSEGV

2010-12-31 Thread Michael Stone
Bug reported upstream: https://bugs.freedesktop.org/show_bug.cgi?id=32765 ** Bug watch added: freedesktop.org Bugzilla #32765 http://bugs.freedesktop.org/show_bug.cgi?id=32765 ** Also affects: xorg-server via http://bugs.freedesktop.org/show_bug.cgi?id=32765 Importance: Unknown St

[Ubuntu-x-swat] [Bug 635523] Re: Xephyr crashed with SIGSEGV

2010-12-31 Thread Michael Stone
The segfault occurs because Xephyr's attempt to bgfill its client-facing root window writes past the end of the window's image data buffer. The write fails because Xephyr's hostx_screen_init() function is requesting an image data buffer which is too small. The image data buffer is too small becau

[Ubuntu-x-swat] [Bug 635523] Re: Xephyr crashed with SIGSEGV

2010-12-24 Thread Michael Stone
This bug is really ticking me off because it completely breaks sugar- emulator. Therefore, in the interests of helping to get it fixed, here's a simplified test case, a better stack trace, a core dump, and materials for building a -dbg package for xserver-xephyr. ** Attachment added: "analysis mat