https://bugs.freedesktop.org/show_bug.cgi?id=97003
--- Comment #7 from Roland Scheidegger sroland@vmware.com --- 0x36 looks like a segment override (ss segment) prefix (0x89 would be a mov), so nothing new. This looks like a valgrind bug to me: https://bugs.kde.org/show_bug.cgi?id=344139 which seems old, in particular no updates since over a year (and specifically mentions wine is using such segment override prefixes).