Hi Greg, Can you please pick these two upstream patches to 4.14? They fix broken perf unwinding for me. commit 3d20c6246690219881786de10d2dda93f616d0ac Author: Martin Vuille < jpmv27@xxxxxxx> Date: Sun Feb 11 16:24:20 2018 -0500 perf unwind: Unwind with libdw doesn't take symfs into account commit 1fe627da30331024f453faef04d500079b901107 Author: Milian Wolff < milian.wolff@xxxxxxxx> Date: Mon Oct 29 15:16:44 2018 +0100 perf unwind: Take pgoff into account when reporting elf to libdwfl -Tommi