GDB backtrace For chromium hangup

(gdb) bt
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fb512be9443 in ?? ()
#2  0x00007fb512bc9d0d in ?? ()
#3  0x00007fb512bacb0f in ?? ()
#4  0x00007fb512bbc7d1 in ?? ()
#5  0x00007fb512baa03a in ?? ()
#6  0x00007fb51537aea8 in ?? ()
#7  0x00007fb512b7d045 in ?? ()
#8  0x00007fb512b7de1e in ?? ()
#9  0x00007fb512b7cc30 in ?? ()
#10 0x00007fb512569698 in ChromeMain ()
#11 0x00007fb50a541b45 in __libc_start_main (main=0x7fb512569650 , argc=4, argv=0x7fffb310c918, 
    init=, fini=, rtld_fini=, stack_end=0x7fffb310c908) at libc-start.c:287
#12 0x00007fb512569545 in _start ()