linux-kernel - Re: [PATCH v3 1/1] ftrace, workqueuetrace: Make workqueuetracepoints use TRACE

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: <20090421155032.GB5402@redhat.com>
Date:	Tue, 21 Apr 2009 17:50:32 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Zhaolei <zhaolei@...fujitsu.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/1] ftrace, workqueuetrace: Make
	workqueuetracepoints use TRACE_EVENT macro

On 04/21, Oleg Nesterov wrote:
>
> On 04/21, Frederic Weisbecker wrote:
> >
> > For example,
> >
> > - the user opens the stat file
> > - then the entries are loaded and sorted into memory
> > - one of the workqueues is destroyed

Hmm. And what protects cws when, say, workqueue_stat_show() is called?
Can't we race with probe_workqueue_destruction()->kfree() ?

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/