On Tue, 9 Mar 2021 13:42:55 -0800 Kees Cook <keescook@xxxxxxxxxxxx> wrote: > Choosing the initial state of static branches changes the assembly layout > (if the condition is expected to be likely, inline, or unlikely, out of > line via a jump). The _TRUE/_FALSE defines for CONFIG_INIT_ON_*_DEFAULT_ON > were accidentally removed. These need to stay so that the CONFIG controls > the pessimization of the resulting static branch NOP/JMP locations. Changelog doesn't really explain why anyone would want to apply this patch. This is especially important for -stable patches. IOW, what is the user visible effect of the bug?