linux-kernel - Re: [PATCH v2 01/34] compiler_types: Move lock checking attributes to compiler-capability-analysis.h

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <f76a48fe-09da-41e0-be2e-e7f1b939b7e3@stanley.mountain>
Date: Wed, 5 Mar 2025 11:36:10 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Marco Elver <elver@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Alexander Potapenko <glider@...gle.com>,
	Arnd Bergmann <arnd@...db.de>, Bart Van Assche <bvanassche@....org>,
	Bill Wendling <morbo@...gle.com>, Boqun Feng <boqun.feng@...il.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Frederic Weisbecker <frederic@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Ingo Molnar <mingo@...nel.org>, Jann Horn <jannh@...gle.com>,
	Jiri Slaby <jirislaby@...nel.org>,
	Joel Fernandes <joel@...lfernandes.org>,
	Jonathan Corbet <corbet@....net>,
	Josh Triplett <josh@...htriplett.org>,
	Justin Stitt <justinstitt@...gle.com>, Kees Cook <kees@...nel.org>,
	Kentaro Takeda <takedakn@...data.co.jp>,
	Mark Rutland <mark.rutland@....com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Neeraj Upadhyay <neeraj.upadhyay@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Thomas Gleixner <tglx@...utronix.de>,
	Uladzislau Rezki <urezki@...il.com>,
	Waiman Long <longman@...hat.com>, Will Deacon <will@...nel.org>,
	kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev, rcu@...r.kernel.org,
	linux-crypto@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH v2 01/34] compiler_types: Move lock checking attributes
 to compiler-capability-analysis.h

On Tue, Mar 04, 2025 at 10:21:00AM +0100, Marco Elver wrote:
> +#ifndef _LINUX_COMPILER_CAPABILITY_ANALYSIS_H
> +#define _LINUX_COMPILER_CAPABILITY_ANALYSIS_H
> +
> +#ifdef __CHECKER__
> +
> +/* Sparse context/lock checking support. */
> +# define __must_hold(x)		__attribute__((context(x,1,1)))
> +# define __acquires(x)		__attribute__((context(x,0,1)))
> +# define __cond_acquires(x)	__attribute__((context(x,0,-1)))
> +# define __releases(x)		__attribute__((context(x,1,0)))
> +# define __acquire(x)		__context__(x,1)
> +# define __release(x)		__context__(x,-1)
> +# define __cond_lock(x, c)	((c) ? ({ __acquire(x); 1; }) : 0)
> +

The other thing you might want to annotate is ww_mutex_destroy().

I'm happy about the new __guarded_by annotation.

regards,
dan carpenter