For instance, instead of: #0 0x556402 in __kernel_vsyscall () #1 0xcd740d in __poll () print something like: #0 0x556402 in __kernel_vsyscall () from [vdso] #1 0xcd740d in __poll () from libc.so (the actual names will likely be longer / different to this) this becomes more important when there's no symbol vis: #0 0x123456 vs #0 0x123457 from libc.so