Comment # 8 on bug 97003 from Timothy Arceri

(In reply to Roland Scheidegger from comment #7)
> 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).

Looks like a fix has been merged into valgringd git.