On Fri, Sep 04, 2020 at 04:31:41PM -0400, Gabriel Krisman Bertazi wrote: > Syscall user redirection requires the signal trampoline code to not be > captured, in order to support returning with a locked selector while > avoiding recursion back into the signal handler. For ia-32, which has > the trampoline in the vDSO, expose the entry points to the kernel, such > that it can avoid dispatching syscalls from that region to userspace. > > Changes since V1 > - Change return address to bool (Andy) > > Suggested-by: Andy Lutomirski <luto@xxxxxxxxxx> > Acked-by: Andy Lutomirski <luto@xxxxxxxxxx> > Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx> Look good to me; would anything else benefit from this information? Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook
