From: Kees Cook <kees@kernel.org>
To: Bill Wendling <morbo@google.com>
Cc: Kees Cook <kees@kernel.org>, Vincent Mailhol <mailhol@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Justin Stitt <justinstitt@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: [PATCH 0/2] randstruct: fix container_of() false positives after __mptr removal
Date: Thu, 3 Sep 2026 16:24:34 -0700 [thread overview]
Message-ID: <20260903232428.i.323-kees@kernel.org> (raw)
Hi,
The GCC randstruct implementation specifically keyed on the __mptr temp
variable name. With that removed, we need to check via a struct walk or
a void * cast (which is what Clang already does).
I'm hoping to get these into v7.3 before release, but I want to put this
through -next for a bit first.
-Kees
Kees Cook (2):
randstruct: fix container_of() false positives after __mptr removal
randstruct: report bad casts as warnings rather than notes
scripts/gcc-plugins/randomize_layout_plugin.c | 63 +++++++++++++++++--
1 file changed, 59 insertions(+), 4 deletions(-)
--
2.34.1
next reply other threads:[~2026-09-03 23:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-03 23:24 Kees Cook [this message]
2026-09-03 23:24 ` [PATCH 1/2] randstruct: fix container_of() false positives after __mptr removal Kees Cook
2026-09-03 23:24 ` [PATCH 2/2] randstruct: report bad casts as warnings rather than notes Kees Cook
2026-09-04 18:14 ` Bill Wendling
2026-09-04 20:24 ` Nathan Chancellor
2026-09-05 0:48 ` Kees Cook
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