.
Thread 2 (Thread 0x7fe5650ac700 (LWP 1303)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fe56537bd79 in ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
No symbol table info available.
#2  0x00007fe568ad875a in start_thread (arg=0x7fe5650ac700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7fe5650ac700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140623219443456, -1241686340483793739, 0, 140726310064655, 140623219444160, 3, 1229041585145134261, 1229048946022169781}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#3  0x00007fe568ffeaed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 1 (Thread 0x7fe56afbf980 (LWP 1275)):
#0  0x00007fe56794acf9 in ?? () from /lib/x86_64-linux-gnu/libgcc_s.so.1
No symbol table info available.
#1  0x00007fe56794c618 in _Unwind_Backtrace () from /lib/x86_64-linux-gnu/libgcc_s.so.1
No symbol table info available.
#2  0x00007fe56900d316 in __GI___backtrace (array=<optimized out>, size=64) at ../sysdeps/x86_64/backtrace.c:109
        arg = {array = 0x7ffd65b8c4a0, cfa = 140726310061888, cnt = 3, size = 64}
        once = 2
#3  0x00005611f706462e in xorg_backtrace ()
No symbol table info available.
#4  0x00005611f7068999 in ?? ()
No symbol table info available.
#5  <signal handler called>
No locals.
#6  0x00000000000023f2 in ?? ()
No symbol table info available.
#7  0x00007fe565353b73 in ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
No symbol table info available.
#8  0x00007fe565358362 in ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
No symbol table info available.
#9  0x00007fe5653c31af in ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
No symbol table info available.
#10 0x00007fe5653d245f in ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
No symbol table info available.
#11 0x00005611f7035bcc in ?? ()
No symbol table info available.
#12 0x00005611f70362ee in DRI2CopyRegion ()
No symbol table info available.
#13 0x00005611f70386c3 in ?? ()
No symbol table info available.
#14 0x00005611f6f0818f in ?? ()
No symbol table info available.
#15 0x00005611f6f0c34b in ?? ()
No symbol table info available.
#16 0x00007fe568f178b0 in __libc_start_main (main=0x5611f6ef6690, argc=11, argv=0x7ffd65b8d6a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd65b8d698) at libc-start.c:291
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 4820904202962353333, 94635157317280, 140726310065824, 0, 0, 1242553329756814517, 1229048635217558709}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x5611f7075860 <__libc_csu_init>, 0x7ffd65b8d6a8}, data = {prev = 0x0, cleanup = 0x0, canceltype = -150513568}}}
        not_first_call = <optimized out>
#17 0x00005611f6ef66c9 in _start ()
No symbol table info available.