netdev - Re: [PATCH 25/33] sfc: Generate unique names for per-NIC workqueues

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:	Fri, 12 Dec 2008 22:29:54 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	bhutchings@...arflare.com
Cc:	netdev@...r.kernel.org, linux-net-drivers@...arflare.com
Subject: Re: [PATCH 25/33] sfc: Generate unique names for per-NIC workqueues

From: Ben Hutchings <bhutchings@...arflare.com>
Date: Sat, 13 Dec 2008 06:23:03 +0000

> David Miller wrote:
> > create_singlethread_workqueue() is going to reference this
> > name buffer on the stack for the life of the workqueue, but
> > once this function returns that reference will no longer
> > be valid.
>  
> No, it's copied into the "comm" field of task_struct.

Hmmm...

create_singlethread_workqueue(name...
	--> __create_workqueue(name...
	--> __create_workqueue_key(name...

which goes:
	wq->cpu_wq = alloc_percpu(struct cpu_workqueue_struct);
 ...
	wq->name = name;

Which looks like a dynamic memory assumption to me.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html