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Message-ID: <202309291031.1B2A2EE@keescook>
Date: Fri, 29 Sep 2023 10:31:56 -0700
From: Kees Cook <keescook@...omium.org>
To: Mark Brown <broonie@...nel.org>
Cc: Shuah Khan <shuah@...nel.org>,
Eric Biederman <ebiederm@...ssion.com>,
linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mm@...ck.org
Subject: Re: [PATCH 1/2] kselftest: Add a ksft_perror() helper
On Fri, Sep 29, 2023 at 09:50:53AM +0200, Mark Brown wrote:
> On Thu, Sep 28, 2023 at 05:48:22PM -0700, Kees Cook wrote:
>
> > > nolibc doesn't have a strerror() and adding the table of strings required
> > > doesn't seem like a good fit for what it's trying to do so when we're using
> > > that only print the errno.
>
> > Oh, interesting... what environment ends up without strerror()?
>
> Like I say it's for nolibc - it's just some header files (all in the
> kernel source), while it generally aims to be libc compatible it's
> intentionally very small.
Right, I mean, how would one normally encounter this environment? Running
the selftests on m68k userspace or something?
--
Kees Cook
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