.
Thread 3 (Thread 0x7f570ac89700 (LWP 1495)):
#0  0x00007f57117aad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00007f570de32833 in ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
No symbol table info available.
#2  0x00007f57117a6e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#3  0x00007f57104fa4bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f570b48a700 (LWP 1494)):
#0  0x00007f57117aad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00007f570de32833 in ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
No symbol table info available.
#2  0x00007f57117a6e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#3  0x00007f57104fa4bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f570f936880 (LWP 1380)):
#0  0x00007f571043e445 in raise () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f5710441bab in abort () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007f57126514fe in OsAbort ()
No symbol table info available.
#3  0x00007f57125158dc in ddxGiveUp ()
No symbol table info available.
#4  0x00007f5712656492 in ?? ()
No symbol table info available.
#5  0x00007f5712656cdd in FatalError ()
No symbol table info available.
#6  0x00007f571264f28e in ?? ()
No symbol table info available.
#7  <signal handler called>
No symbol table info available.
#8  0x00007f57104992ce in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#9  0x00007f570e63684e in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#10 0x00007f570e636d03 in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#11 0x00007f570e63951a in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#12 0x00007f570e6437d8 in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#13 0x00007f570e64011d in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#14 0x00007f57125d4dd9 in ?? ()
No symbol table info available.
#15 0x00007f570e6411ef in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#16 0x00007f57125ce93b in ?? ()
No symbol table info available.
#17 0x00007f57124d56f1 in ?? ()
No symbol table info available.
#18 0x00007f57124c41fa in ?? ()
No symbol table info available.
#19 0x00007f571042976d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#20 0x00007f57124c453d in _start ()
No symbol table info available.