netdev - Re: [PATCH take 2] pkt_sched: Fix qdisc_watchdog() vs. dev

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 2008 04:47:17 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	jarkao2@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH take 2] pkt_sched: Fix qdisc_watchdog() vs.
 dev_deactivate() race

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Thu, 11 Sep 2008 21:45:02 +1000

> On Thu, Sep 11, 2008 at 04:42:55AM -0700, David Miller wrote:
> > And we don't have the qdisc lock here, taking it is undesirable,
> > and if we do take it we have to transfer that lock down into
> > __qdisc_run() which means adjusting all the other __qdisc_run()
> > callers.
> 
> Last I checked qdisc_run did run under the root lock...

That certainly changes things :)

Ok, so implementing ->peek() is the first step in dealing
with this.
--
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