.
Thread 9 (LWP 3406):
#0  0xb77c5424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb478fd4b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
No locals.
#2  0xb44257d1 in WTF::TCMalloc_PageHeap::scavengerThread (this=this@entry=0xb452c100 <WTF::pageheap_memory>) at ../Source/WTF/wtf/FastMalloc.cpp:2880
No locals.
#3  0xb442580b in WTF::TCMalloc_PageHeap::runScavengerThread (context=0xb452c100 <WTF::pageheap_memory>) at ../Source/WTF/wtf/FastMalloc.cpp:2048
No locals.
#4  0xb3b44261 in ?? () from /tmp/apport_sandbox_Y6O4jS/usr/lib/nvidia-304/libGL.so.1
No symbol table info available.
Cannot access memory at address 0xb4605154