https://bugs.freedesktop.org/show_bug.cgi?id=61182
--- Comment #4 from Knut Andre Tidemann knut.tidemann@gmail.com --- I can confirm a very similar crash:
#5 0x00007fb122be859b in __memset_sse2 () from /usr/lib/libc.so.6 #6 0x00007fb072bd0a5f in r600_texture_create_object () from /usr/lib/xorg/modules/dri/r600_dri.so #7 0x00007fb072bd0d37 in r600_texture_create () from /usr/lib/xorg/modules/dri/r600_dri.so #8 0x00007fb072be3145 in dri2_allocate_textures () from /usr/lib/xorg/modules/dri/r600_dri.so #9 0x00007fb072be1c65 in dri_st_framebuffer_validate () from /usr/lib/xorg/modules/dri/r600_dri.so #10 0x00007fb072be1e9e in dri_set_tex_buffer2 () from /usr/lib/xorg/modules/dri/r600_dri.so #11 0x00007fb122fd94b3 in ?? () from /usr/lib/libkdeinit4_kwin.so
(I don't have debug symbols for kwin, and mesa was compiled in release mode).
Mesa 9.2-devel (git-4154ac0) Kernel 3.8.0. KDE 4.10.
I get the crash when first logging in, but I also get it every time I unlock the screen after locking it from the 'K-menu'.
The crash only occurs if compositing is on.