Date: Wed, 25 Oct 2017 07:45:52 +1100 From: "Tobin C. Harding" <me@...in.cc> To: "Jason A. Donenfeld" <Jason@...c4.com> Cc: kernel-hardening@...ts.openwall.com, Theodore Ts'o <tytso@....edu>, Linus Torvalds <torvalds@...ux-foundation.org>, Kees Cook <keescook@...omium.org>, Paolo Bonzini <pbonzini@...hat.com>, Tycho Andersen <tycho@...ker.com>, "Roberts, William C" <william.c.roberts@...el.com>, Tejun Heo <tj@...nel.org>, Jordan Glover <Golden_Miller83@...tonmail.ch>, Greg KH <gregkh@...uxfoundation.org>, Petr Mladek <pmladek@...e.com>, Joe Perches <joe@...ches.com>, Ian Campbell <ijc@...lion.org.uk>, Sergey Senozhatsky <sergey.senozhatsky@...il.com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <wilal.deacon@....com>, Steven Rostedt <rostedt@...dmis.org>, Chris Fries <cfries@...gle.com>, Dave Weinstein <olorin@...gle.com>, Daniel Micay <danielmicay@...il.com>, Djalal Harouni <tixxdz@...il.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v7] printk: hash addresses printed with %p On Tue, Oct 24, 2017 at 01:25:52PM +0200, Jason A. Donenfeld wrote: > On Tue, Oct 24, 2017 at 2:31 AM, Tobin C. Harding <me@...in.cc> wrote: > > On Tue, Oct 24, 2017 at 01:00:03AM +0200, Jason A. Donenfeld wrote: > >> Provided you've tested this and the static_key guard stuff actually > >> works as intended, > > > > I tested by inserting a simple module that calls printf() with a bunch of > > different specifiers. So it's tested but not stress tested. Some stress testing > > might be nice, no ideas how to go about that though. > > By the way, it occurred to me one thing you might want to verify > closely is whether or not that callback block executes from process > context and whether or not the static_key stuff sleeps. If both, > there's a problem. Ok, will do. thanks, Tobin.
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