.
Thread 2 (process 14717):
#0  0x00d63416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00234df6 in __real_chown (file=0x2ccff4 "|\235\025", owner=3, 
    group=4294967295) at ../sysdeps/unix/sysv/linux/i386/chown.c:100
No locals.
#2  0x00c5288b in g_poll (fds=0x8e138c8, nfds=3, timeout=-1)
    at /build/buildd/glib2.0-2.27.4/glib/gpoll.c:132
No locals.
#3  0x00c4221f in g_main_context_iterate (context=0x0, block=12920928, 
    dispatch=1) at /build/buildd/glib2.0-2.27.4/glib/gmain.c:3812
	max_priority = 2147483647
	timeout = -1
	some_ready = <value optimized out>
	nfds = 3
	allocated_nfds = <value optimized out>
	fds = (GPollFD *) 0x8e138c8
#4  0x08e138c8 in ?? ()
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
.
Thread 1 (process 14712):
#0  0x00bd2cfc in radeon_bo_get_tiling () from /lib/libdrm_radeon.so.1
No symbol table info available.
#1  0x0089ca3a in radeon_update_renderbuffers (context=0x8e4b3c0, 
    drawable=0x99d33e8, front_only=1 '\001') at radeon_common_context.c:125
	tiling_flags = 0
	pitch = 0
	attachments = {0, 32, 149256152, 3221178136, 66492610, 148873320, 
  3553, 0, 152721392, 6058935}
	buffers = <value optimized out>
	screen = <value optimized out>
	rb = <value optimized out>
	i = <value optimized out>
	count = 1
	draw = (struct radeon_framebuffer *) 0x8df9808
	radeon = <value optimized out>
	regname = <value optimized out>
	depth_bo = <value optimized out>
	bo = (struct radeon_bo *) 0x0
	__func__ = "radeon_update_renderbuffers"
#2  0x00000000 in ?? ()
No symbol table info available.