From: Kees Cook <keescook@chromium.org>
To: Miguel Ojeda <ojeda@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
Jarkko Sakkinen <jarkko@kernel.org>, Gary Guo <gary@garyguo.net>,
Alex Gaynor <alex.gaynor@gmail.com>,
Wedson Almeida Filho <wedsonaf@google.com>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: Re: [PATCH v6 14/23] vsprintf: add new `%pA` format specifier
Date: Sat, 7 May 2022 01:19:08 -0700 [thread overview]
Message-ID: <202205070117.28F31079@keescook> (raw)
In-Reply-To: <20220507052451.12890-15-ojeda@kernel.org>
On Sat, May 07, 2022 at 07:24:12AM +0200, Miguel Ojeda wrote:
> From: Gary Guo <gary@garyguo.net>
>
> This patch adds a format specifier `%pA` to `vsprintf` which formats
> a pointer as `core::fmt::Arguments`. Doing so allows us to directly
> format to the internal buffer of `printf`, so we do not have to use
> a temporary buffer on the stack to pre-assemble the message on
> the Rust side.
>
> This specifier is intended only to be used from Rust and not for C, so
> `checkpatch.pl` is intentionally unchanged to catch any misuse.
Maybe add a test to yell if pA is seen in a .c file (like the runtime
check in this patch).
But that can be separate from this patch.
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2022-05-07 8:19 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-07 5:23 [PATCH v6 00/23] Rust support Miguel Ojeda
2022-05-07 5:23 ` [PATCH v6 01/23] kallsyms: avoid hardcoding the buffer size Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 02/23] kallsyms: support "big" kernel symbols Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 03/23] kallsyms: increase maximum kernel symbol length to 512 Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 04/23] kunit: take `kunit_assert` as `const` Miguel Ojeda
2022-05-12 19:01 ` Brendan Higgins
2022-05-07 5:24 ` [PATCH v6 05/23] rust: add C helpers Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 06/23] rust: add `compiler_builtins` crate Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 07/23] rust: import upstream `alloc` crate Miguel Ojeda
2022-05-07 9:23 ` Kees Cook
2022-05-07 9:33 ` Miguel Ojeda
2022-05-07 17:06 ` Kees Cook
2022-05-07 17:30 ` Linus Torvalds
2022-05-07 19:34 ` Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 08/23] rust: adapt `alloc` crate to the kernel Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 09/23] rust: add `build_error` crate Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 10/23] rust: add `macros` crate Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 11/23] rust: add `kernel` crate's `sync` module Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 12/23] rust: add `kernel` crate Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 13/23] rust: export generated symbols Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 14/23] vsprintf: add new `%pA` format specifier Miguel Ojeda
2022-05-07 8:19 ` Kees Cook [this message]
2022-05-07 9:35 ` Miguel Ojeda
2022-05-10 8:38 ` Petr Mladek
2022-05-10 10:45 ` Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 15/23] scripts: add `rustdoc_test_{builder,gen}.py` scripts Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 16/23] scripts: add `generate_rust_analyzer.py` scripts Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 17/23] scripts: decode_stacktrace: demangle Rust symbols Miguel Ojeda
2022-05-07 8:32 ` Kees Cook
2022-05-07 10:21 ` Miguel Ojeda
2022-05-07 17:09 ` Kees Cook
2022-05-07 5:24 ` [PATCH v6 18/23] docs: add Rust documentation Miguel Ojeda
2022-05-07 8:15 ` Kees Cook
2022-05-07 8:45 ` Miguel Ojeda
2022-05-09 4:02 ` Akira Yokosawa
2022-05-09 10:41 ` Miguel Ojeda
2022-05-09 14:56 ` Akira Yokosawa
2022-05-09 22:37 ` Jonathan Corbet
2022-05-10 11:57 ` Miguel Ojeda
2022-05-09 22:32 ` Jonathan Corbet
2022-05-10 3:14 ` Gaelan Steele
2022-05-10 5:53 ` Josh Triplett
2022-05-11 13:49 ` Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 19/23] Kbuild: add Rust support Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 20/23] samples: add Rust examples Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 21/23] MAINTAINERS: Rust Miguel Ojeda
2022-05-07 8:06 ` Kees Cook
2022-05-07 5:24 ` [PATCH v6 22/23] [RFC] drivers: gpio: PrimeCell PL061 in Rust Miguel Ojeda
2022-05-07 5:24 ` [PATCH v6 23/23] [RFC] drivers: android: Binder IPC " Miguel Ojeda
2022-05-07 7:55 ` Kees Cook
2022-05-07 8:13 ` Greg Kroah-Hartman
2022-05-09 17:52 ` Todd Kjos
2022-05-07 8:06 ` [PATCH v6 00/23] Rust support Kees Cook
2022-05-08 18:06 ` Matthew Wilcox
2022-05-09 9:39 ` Wei Liu
2022-05-07 9:29 ` David Gow
2022-05-07 15:03 ` Miguel Ojeda
2022-05-10 4:44 ` David Gow
2022-05-10 11:36 ` Miguel Ojeda
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