Date: Thu, 31 Mar 2016 17:00:24 -0500 From: Linus Torvalds <torvalds@...ux-foundation.org> To: "Eric W. Biederman" <ebiederm@...ssion.com> Cc: Scott Bauer <sbauer@....utah.edu>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, "the arch/x86 maintainers" <x86@...nel.org>, Andi Kleen <ak@...ux.intel.com>, Andy Lutomirski <luto@...capital.net>, Ingo Molnar <mingo@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, wmealing@...hat.com, Abhiram Balasubramanian <abhiram@...utah.edu>, Scott Bauer <sbauer@...donthack.me> Subject: Re: [PATCH v4 1/4] SROP Mitigation: Architecture independent code for signal cookies On Thu, Mar 31, 2016 at 3:25 PM, Eric W. Biederman <ebiederm@...ssion.com> wrote: > > I suspect we want this to be a per-mm attribute rather than a per-thread > attribute. > > Otherwise you are breaking anything that uses a N-M threading model. > Which I suspect means that this implementation choice breaks all go > programs on linux. That sounds like a good point, but wouldn't it make more conceptual sense to make it part of "struct sighand_struct" instead? That is also shared for threads. Linus
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