Date: Thu, 1 Apr 2021 09:37:59 +0100 From: Will Deacon <will@...nel.org> To: Kees Cook <keescook@...omium.org> Cc: Catalin Marinas <catalin.marinas@....com>, Mark Rutland <mark.rutland@....com>, Thomas Gleixner <tglx@...utronix.de>, Elena Reshetova <elena.reshetova@...el.com>, x86@...nel.org, Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Alexander Potapenko <glider@...gle.com>, Alexander Popov <alex.popov@...ux.com>, Ard Biesheuvel <ard.biesheuvel@...aro.org>, Jann Horn <jannh@...gle.com>, Vlastimil Babka <vbabka@...e.cz>, David Hildenbrand <david@...hat.com>, Mike Rapoport <rppt@...ux.ibm.com>, Andrew Morton <akpm@...ux-foundation.org>, Jonathan Corbet <corbet@....net>, Randy Dunlap <rdunlap@...radead.org>, kernel-hardening@...ts.openwall.com, linux-hardening@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v9 0/6] Optionally randomize kernel stack offset each syscall Hi Kees, On Wed, Mar 31, 2021 at 01:54:52PM -0700, Kees Cook wrote: > Hi Will (and Mark and Catalin), > > Can you take this via the arm64 tree for v5.13 please? Thomas has added > his Reviewed-by, so it only leaves arm64's. :) Sorry, these got mixed up in my inbox so I just replied to v7 and v8 and then noticed v9. Argh! However, I think the comments still apply: namely that the dummy "=m" looks dangerous to me and I think you're accessing pcpu variables with preemption enabled for the arm64 part: https://lore.kernel.org/r/20210401083034.GA8554@willie-the-truck https://lore.kernel.org/r/20210401083430.GB8554@willie-the-truck Will
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.