linux-kernel - Re: [PATCH] resource: add WARN_ON_ONCE for resource

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: <aTg7HXlArkxOsgKs@smile.fi.intel.com>
Date: Tue, 9 Dec 2025 17:07:09 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Christian Marangi <ansuelsmth@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] resource: add WARN_ON_ONCE for resource_size() and
 document misusage

On Tue, Dec 09, 2025 at 12:25:38PM +0200, Ilpo Järvinen wrote:
> On Mon, 8 Dec 2025, Christian Marangi wrote:

...

> >  static inline resource_size_t resource_size(const struct resource *res)
> >  {
> > +	WARN_ON_ONCE(!res->flags);
> 
> As lkp also found out, you need to add #include <linux/bug.h>

Since it's header, we may use better one from asm, i.e. asm/bug.h.
This will give finer granularity and less possible tangled dependencies
in the future.

> >  	return res->end - res->start + 1;
> >  }


-- 
With Best Regards,
Andy Shevchenko