On Wed, Feb 24, 2021 at 11:20 AM Borislav Petkov <bp@xxxxxxxxx> wrote: > > On Wed, Feb 24, 2021 at 09:56:13AM -0800, Yu, Yu-cheng wrote: > > No. Maybe I am doing too much. The GP fault sets si_addr to zero, for > > example. So maybe do the same here? > > No, you're looking at this from the wrong angle. This is going to be > user-visible and the moment it gets upstream, it is cast in stone. > > So the whole use case of what luserspace needs to do or is going to do > or wants to do on a SEGV_CPERR, needs to be described, agreed upon by > people etc before it goes out. And thus clarified whether the address > gets copied out or not. I vote 0. The address is in ucontext->gregs[REG_RIP] [0] regardless. Why do we need to stick a copy somewhere else? [0] or however it's spelled. i can never remember. > > Thx. > > -- > Regards/Gruss, > Boris. > > https://people.kernel.org/tglx/notes-about-netiquette
