(gdb) backtrace
#0  0xf6b5d266 in si_need_cs_space () at /opt/mesa/lib/dri/radeonsi_dri.so
#1  0xf6b53516 in si_clear_buffer () at /opt/mesa/lib/dri/radeonsi_dri.so
#2  0xf6c1ba3b in r600_screen_clear_buffer () at /opt/mesa/lib/dri/radeonsi_dri.so
#3  0xf6c23af9 in r600_texture_create_object () at /opt/mesa/lib/dri/radeonsi_dri.so
#4  0xf6c24cf8 in r600_texture_create () at /opt/mesa/lib/dri/radeonsi_dri.so
#5  0xf6c1b258 in r600_resource_create_common () at /opt/mesa/lib/dri/radeonsi_dri.so
#6  0xf6962724 in dri2_allocate_textures () at /opt/mesa/lib/dri/radeonsi_dri.so
#7  0xf695daba in dri_st_framebuffer_validate () at /opt/mesa/lib/dri/radeonsi_dri.so
#8  0xf6820eb7 in st_framebuffer_validate () at /opt/mesa/lib/dri/radeonsi_dri.so
#9  0xf682216e in st_api_make_current () at /opt/mesa/lib/dri/radeonsi_dri.so
#10 0xf695d6a7 in dri_make_current () at /opt/mesa/lib/dri/radeonsi_dri.so
#11 0xf695c235 in driBindContext () at /opt/mesa/lib/dri/radeonsi_dri.so
#12 0xf72994f1 in dri3_bind_context () at /opt/mesa/lib/libGL.so.1
#13 0xf726923d in glXMakeCurrent () at /opt/mesa/lib/libGL.so.1
#14 0x565a773f in CBaseLinuxUpdateUI::GatherGLInfo() ()
#15 0x565a7ccf in CBaseLinuxUpdateUI::BaseCreateWindow() ()
#16 0x565a8910 in CXWindowsUpdateUI::BCreateWindow() ()
#17 0x565a921a in CBaseLinuxUpdateUI::FatalError(char const*) ()
#18 0x5658fe05 in RunSteam(int, char**, bool) ()
#19 0x565788f2 in  ()
#20 0xf7a855a6 in __libc_start_main () at /lib/libc.so.6
#21 0x5657b009 in _start ()