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Date: Wed, 25 Oct 2017 07:45:52 +1100
From: "Tobin C. Harding" <me@tobin.cc>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: kernel-hardening@lists.openwall.com, "Theodore Ts'o" <tytso@mit.edu>,
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Subject: Re: [PATCH v7] printk: hash addresses printed with %p
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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@tobin.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.