lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 24 Feb 2022 09:59:08 +0100 From: Geert Uytterhoeven <geert@...ux-m68k.org> To: Kees Cook <keescook@...omium.org> Cc: linux-m68k <linux-m68k@...ts.linux-m68k.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-hardening@...r.kernel.org Subject: Re: [PATCH] m68k: Implement "current_stack_pointer" Hi Kees, On Thu, Feb 24, 2022 at 7:04 AM Kees Cook <keescook@...omium.org> wrote: > To follow the existing per-arch conventions, add asm "sp" as > "current_stack_pointer". This will let it be used in non-arch places > (like HARDENED_USERCOPY). > > Cc: Geert Uytterhoeven <geert@...ux-m68k.org> > Cc: linux-m68k@...ts.linux-m68k.org > Signed-off-by: Kees Cook <keescook@...omium.org> Thanks for your patch! > --- a/arch/m68k/include/asm/current.h > +++ b/arch/m68k/include/asm/current.h > @@ -24,6 +24,8 @@ static inline struct task_struct *get_current(void) > > #define current get_current() > > +register unsigned long current_stack_pointer __asm__("sp"); I don't know what HARDENED_USERCOPY does, so I don't know if you need "usp" (see rdusp()) or "sp"? > + > #endif /* CONFNIG_MMU */ > > #endif /* !(_M68K_CURRENT_H) */ Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
Powered by blists - more mailing lists