linux-kernel - RE: [PATCH v2] zd1211rw: replace ZD_ASSERT with lockdep_assert

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]

Date:	Thu, 11 Sep 2014 10:36:42 +0000
From:	"Sharma, Sanjeev" <Sanjeev_Sharma@...tor.com>
To:	Johannes Berg <johannes@...solutions.net>
CC:	"dsd@...too.org" <dsd@...too.org>,
	"kune@...ne-taler.de" <kune@...ne-taler.de>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH v2] zd1211rw: replace ZD_ASSERT with
 lockdep_assert_held()

-----Original Message-----
From: Johannes Berg [mailto:johannes@...solutions.net] 
Sent: Thursday, September 11, 2014 3:42 PM
To: Sharma, Sanjeev
Cc: dsd@...too.org; kune@...ne-taler.de; linux-wireless@...r.kernel.org; linux-kernel@...r.kernel.org; netdev@...r.kernel.org
Subject: Re: [PATCH v2] zd1211rw: replace ZD_ASSERT with lockdep_assert_held()

On Thu, 2014-09-11 at 15:39 +0530, Sanjeev Sharma wrote:
> on some architecture spin_is_locked() always return false in 
> uniprocessor configuration and therefore it would be advise to replace 
> with lockdep_assert_held().
> 
> Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@...tor.com>
> ---
> Changes in v2:
>   - corrected the typo

> Now it compiles, but you got the logic wrong.

> +++ b/drivers/net/wireless/zd1211rw/zd_mac.c
> @@ -235,7 +235,7 @@ void zd_mac_clear(struct zd_mac *mac)  {
>  	flush_workqueue(zd_workqueue);
>  	zd_chip_clear(&mac->chip);
> -	ZD_ASSERT(!spin_is_locked(&mac->lock));
> +	lockdep_assert_held(&mac->lock);
>  	ZD_MEMCLEAR(mac, sizeof(struct zd_mac));  }

>Look closely at this again.

I didn't understand where I  put wrong logic  ?

Regards
Sanjeev Sharma