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From: Kees Cook <keescook@chromium.org>
To: "Tobin C. Harding" <tobin@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Kernel Hardening <kernel-hardening@lists.openwall.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/6] lib: Add safe string funtions
Date: Wed, 20 Feb 2019 15:31:07 -0800	[thread overview]
Message-ID: <CAGXu5j+gHMCjxMr3k0UNBcsT6DYuALtpROxazf7YVX=SUja_cQ@mail.gmail.com> (raw)
In-Reply-To: <20190218232308.11241-1-tobin@kernel.org>

On Mon, Feb 18, 2019 at 3:24 PM Tobin C. Harding <tobin@kernel.org> wrote:
> During your talk at LCA you mentioned that we could do with a couple
> more safe string functions.  One to zero the tail of the destination
> buffer after call to strscpy() and also the self explanatory
> strscpy_from_user().

Thanks for jumping in with this! :)

> I couldn't work out if this is a false positive or not?  Does the new
> config option CONFIG_TEST_STRING need more documentation?  I don't see
> where extra docs should be added and it seems self explanatory as is.

Usually this just means the help string in Kconfig is "too short".
Sometimes this is a false positive -- really up to you if you think it
needs more. :)

On to individual patches...

-- 
Kees Cook

  parent reply	other threads:[~2019-02-20 23:31 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-18 23:23 [PATCH 0/6] lib: Add safe string funtions Tobin C. Harding
2019-02-18 23:23 ` [PATCH 1/6] lib/string: Enable string selftesting Tobin C. Harding
2019-02-19 10:55   ` Andy Shevchenko
2019-02-19 21:55     ` Tobin C. Harding
2019-02-20 10:49       ` Andy Shevchenko
2019-02-20 23:58       ` Kees Cook
2019-02-20 23:57   ` Kees Cook
2019-02-21  5:16     ` Tobin C. Harding
2019-02-18 23:23 ` [PATCH 2/6] lib/string: Fix erroneous 'overflow' documentation Tobin C. Harding
2019-02-21  0:02   ` Kees Cook
2019-02-21  5:17     ` Tobin C. Harding
2019-02-18 23:23 ` [PATCH 3/6] lib/string: Use correct docstring format Tobin C. Harding
2019-02-21  0:07   ` Kees Cook
2019-02-21  4:14     ` Randy Dunlap
2019-02-21  5:27       ` Kees Cook
2019-02-18 23:23 ` [PATCH 4/6] lib/string: Add string copy/zero function Tobin C. Harding
2019-02-21  0:48   ` Kees Cook
2019-02-21  5:20     ` Tobin C. Harding
2019-02-21 12:02     ` Andy Shevchenko
2019-02-25 20:09     ` Tobin C. Harding
2019-02-18 23:23 ` [PATCH 5/6] lib: Fix function documentation for strncpy_from_user Tobin C. Harding
2019-02-19  0:51   ` Jann Horn
2019-02-19 21:52     ` Tobin C. Harding
2019-02-21  1:05     ` Kees Cook
2019-02-21  5:24       ` Tobin C. Harding
2019-02-21  6:02         ` Kees Cook
2019-02-21 14:58           ` Rasmus Villemoes
2019-02-21 23:03             ` Kees Cook
2019-02-25 15:41               ` Rasmus Villemoes
2019-02-21 16:06           ` Jann Horn
2019-02-21 23:14             ` Kees Cook
2019-02-21 20:26           ` Stephen Rothwell
2019-02-21 23:16             ` Kees Cook
2019-02-21 14:28       ` Jann Horn
2019-02-21 22:52         ` Kees Cook
2019-02-18 23:23 ` [PATCH 6/6] lib: Add function strscpy_from_user() Tobin C. Harding
2019-02-19  2:09   ` Jann Horn
2019-02-19  2:12   ` Jann Horn
2019-02-19 21:53     ` Tobin C. Harding
2019-02-20 23:31 ` Kees Cook [this message]
2019-02-21  5:15   ` [PATCH 0/6] lib: Add safe string funtions Tobin C. Harding

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