linux-kernel - Re: [PATCH 2/8] Make process freezer reentrant

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, 5 Apr 2007 13:53:01 +0400
From:	Oleg Nesterov <oleg@...sign.ru>
To:	Gautham R Shenoy <ego@...ibm.com>
Cc:	akpm@...ux-foundation.org, paulmck@...ibm.com,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	vatsa@...ibm.com, "Rafael J. Wysocki" <rjw@...k.pl>, mingo@...e.hu,
	dipankar@...ibm.com, dino@...ibm.com,
	masami.hiramatsu.pt@...achi.com
Subject: Re: [PATCH 2/8] Make process freezer reentrant

On 04/02, Gautham R Shenoy wrote:
>
>  int freeze_processes(unsigned long freeze_event)
>  {
>  	unsigned int nr_unfrozen;
> -
> +	int ret = 0;
> +	mutex_lock(&freezer_mutex);
> +	if (system_freeze_event_mask & freeze_event)
> +		goto done;

I am not sure this is correct. Suppose that system_freeze_event_mask == FE_SUSPEND,
now freeze_processes(FE_ALL) returns success. Shouldn't we return an error?

Oleg.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/