On 10/28/24 09:07, Alexander Shishkin wrote: > static void text_poke_memcpy(void *dst, const void *src, size_t len) > { > - memcpy(dst, src, len); > + lass_stac(); > + __inline_memcpy(dst, src, len); > + lass_clac(); > } > > static void text_poke_memset(void *dst, const void *src, size_t len) > { > int c = *(const int *)src; > > - memset(dst, c, len); > + lass_stac(); > + __inline_memset(dst, c, len); > + lass_clac(); > } These are the _only_ users of lass_stac/clac() or the new inlines. First of all, I totally agree that the _existing_ strict objtool behavior around STAC/CLAC is a good idea. But text poking really is special and the context is highly unlikely to result in bugs or exploits. My first instinct here would have been to tell objtool that the text poking code is OK and to relax objtool's STAC/CLAC paranoia here. Looking at objtool, I can see how important it is to keep the STAC/CLAC code as dirt simple and foolproof as possible. I don't see an obvious way to except the text poking code without adding at least some complexity. Basically what I'm asking for is if the goal is to keep objtool simple, please *SAY* that. Because on the surface this doesn't look like a good idea.