From: Jessica Yu <jeyu@kernel.org>
To: Kristen Carlson Accardi <kristen@linux.intel.com>
Cc: keescook@chromium.org, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
arjan@linux.intel.com, linux-kernel@vger.kernel.org,
kernel-hardening@lists.openwall.com, rick.p.edgecombe@intel.com,
Ard Biesheuvel <ardb@kernel.org>, Tony Luck <tony.luck@intel.com>
Subject: Re: [PATCH v4 10/10] module: Reorder functions
Date: Tue, 28 Jul 2020 19:29:08 +0200 [thread overview]
Message-ID: <20200728172907.GA31178@linux-8ccs> (raw)
In-Reply-To: <20200717170008.5949-11-kristen@linux.intel.com>
+++ Kristen Carlson Accardi [17/07/20 10:00 -0700]:
>Introduce a new config option to allow modules to be re-ordered
>by function. This option can be enabled independently of the
>kernel text KASLR or FG_KASLR settings so that it can be used
>by architectures that do not support either of these features.
>This option will be selected by default if CONFIG_FG_KASLR is
>selected.
>
>If a module has functions split out into separate text sections
>(i.e. compiled with the -ffunction-sections flag), reorder the
>functions to provide some code diversification to modules.
>
>Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
>Reviewed-by: Kees Cook <keescook@chromium.org>
>Acked-by: Ard Biesheuvel <ardb@kernel.org>
>Tested-by: Ard Biesheuvel <ardb@kernel.org>
>Reviewed-by: Tony Luck <tony.luck@intel.com>
>Tested-by: Tony Luck <tony.luck@intel.com>
Hi Kristen!
I've boot tested this on x86, (un)loaded some modules, and checked
their resulting section addresses as a quick sanity test. Feel free
to add my:
Acked-by: Jessica Yu <jeyu@kernel.org>
Tested-by: Jessica Yu <jeyu@kernel.org>
Thank you!
Jessica
next prev parent reply other threads:[~2020-07-28 17:29 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 16:59 [PATCH v4 00/10] Function Granular KASLR Kristen Carlson Accardi
2020-07-17 16:59 ` [PATCH v4 01/10] objtool: Do not assume order of parent/child functions Kristen Carlson Accardi
2020-07-17 16:59 ` [PATCH v4 02/10] x86: tools/relocs: Support >64K section headers Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 03/10] x86/boot: Allow a "silent" kaslr random byte fetch Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 04/10] x86: Makefile: Add build and config option for CONFIG_FG_KASLR Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 05/10] x86: Make sure _etext includes function sections Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 06/10] x86/tools: Add relative relocs for randomized functions Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 07/10] x86/boot/compressed: Avoid duplicate malloc() implementations Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 08/10] x86: Add support for function granular KASLR Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 09/10] kallsyms: Hide layout Kristen Carlson Accardi
2020-07-20 1:25 ` Kees Cook
2020-07-20 16:59 ` Kristen Carlson Accardi
2020-07-20 16:59 ` Kristen Carlson Accardi
2020-07-17 17:00 ` [PATCH v4 10/10] module: Reorder functions Kristen Carlson Accardi
2020-07-28 17:29 ` Jessica Yu [this message]
2020-07-22 9:27 ` [PATCH v4 00/10] Function Granular KASLR Miroslav Benes
2020-07-22 9:27 ` Miroslav Benes
2020-07-22 14:39 ` Kees Cook
2020-07-22 14:51 ` Joe Lawrence
2020-07-22 14:56 ` Joe Lawrence
2020-07-22 18:24 ` Kristen Carlson Accardi
2020-07-22 18:24 ` Kristen Carlson Accardi
2020-07-22 16:07 ` Josh Poimboeuf
2020-07-22 19:42 ` Kees Cook
2020-07-22 19:56 ` Kristen Carlson Accardi
2020-07-22 19:56 ` Kristen Carlson Accardi
2020-07-22 21:33 ` Josh Poimboeuf
2020-08-21 23:02 ` Kristen Carlson Accardi
2020-08-21 23:02 ` Kristen Carlson Accardi
2020-08-25 16:16 ` Joe Lawrence
2020-08-28 10:21 ` Miroslav Benes
2020-08-28 10:21 ` Miroslav Benes
2020-08-28 19:24 ` Josh Poimboeuf
2021-01-23 22:59 ` Fangrui Song
2021-01-25 17:21 ` Josh Poimboeuf
2020-08-03 11:39 ` Evgenii Shatokhin
2020-08-03 17:45 ` Kees Cook
2020-08-03 18:17 ` Joe Lawrence
2020-08-03 19:38 ` Frank Ch. Eigler
2020-08-03 20:11 ` Kees Cook
2020-08-03 21:12 ` Frank Ch. Eigler
2020-08-03 21:41 ` Kees Cook
2020-08-04 0:48 ` Frank Ch. Eigler
2020-08-04 17:04 ` Jessica Yu
2020-08-04 18:23 ` Joe Lawrence
2020-08-07 16:38 ` Kristen Carlson Accardi
2020-08-07 16:38 ` Kristen Carlson Accardi
2020-08-07 17:20 ` Kees Cook
2020-08-10 16:10 ` Kristen Carlson Accardi
2020-08-10 16:10 ` Kristen Carlson Accardi
2020-08-12 17:18 ` Kristen Carlson Accardi
2020-08-12 17:18 ` Kristen Carlson Accardi
2020-08-06 15:32 ` Ingo Molnar
2020-08-06 19:24 ` Kristen Carlson Accardi
2020-08-06 19:24 ` Kristen Carlson Accardi
2020-08-06 19:27 ` Kees Cook
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