netdev - Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl

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:	Tue, 12 Aug 2008 10:38:17 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().

On Tue, Aug 12, 2008 at 01:15:10AM -0700, David Miller wrote:
...
> The synchronization object is the qdisc.  So we can't resample the
> qdisc after scheduling it, because then the qdisc attached to the
> netdev_queue can change and we'd be holding the root lock for
> the wrong qdisc object.

If you mean net_tx_action() this looks like we would get a root lock
of a current qdisc, just like seen in dev_queue_xmit() at the moment,
so I'm still looking for a clue, what could be wrong with this...

Jarek P.
--
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