On Thu, Aug 27, 2020 at 6:19 AM Florian Weimer <fweimer@xxxxxxxxxx> wrote: > > * Dave Martin: > > > You're right that this has implications: for i386, libc probably pulls > > more arguments off the stack than are really there in some situations. > > This isn't a new problem though. There are already generic prctls with > > fewer than 4 args that are used on x86. > > As originally posted, glibc prctl would have to know that it has to pull > an u64 argument off the argument list for ARCH_X86_CET_DISABLE. But > then the u64 argument is a problem for arch_prctl as well. > Argument of ARCH_X86_CET_DISABLE is int and passed in register. -- H.J.
