linux-kernel - Re: [PATCH v2 6/6] of: Refactor node and property manipulation function locking

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: <ZNEQalGgikGLoZ3p@smile.fi.intel.com>
Date:   Mon, 7 Aug 2023 18:40:26 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        "Enrico Weigelt, metux IT consult" <info@...ux.net>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Petr Mladek <pmladek@...e.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/6] of: Refactor node and property manipulation
 function locking

On Fri, Aug 04, 2023 at 04:41:56PM -0600, Rob Herring wrote:
> All callers of __of_{add,remove,update}_property() and
> __of_{attach,detach}_node() wrap the call with the devtree_lock
> spinlock. Let's move the spinlock into the functions. This allows moving
> the sysfs update functions into those functions as well.

...

>  	for (next = &np->properties; *next; next = &(*next)->next) {
>  		if (*next == prop)
>  			break;
>  	}
> -	if (*next == NULL)
> -		return -ENODEV;
> -
> +	if (*next == NULL) {
> +		rc = -ENODEV;
> +		goto out_unlock;
> +	}
>  	/* found the node */
>  	*next = prop->next;
>  	prop->next = np->deadprops;

But this also looks like a dup for deadprop, maybe something like

static int __of_remove_property_dead_or_alive() // pun intended.

?

-- 
With Best Regards,
Andy Shevchenko