linux-kernel - Question on vhost_has

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-next>] [day] [month] [year] [list]

Date:	Mon, 3 Mar 2014 11:44:23 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	mst@...hat.com
Cc:	linux-kernel@...r.kernel.org
Subject: Question on vhost_has_feature()

Hello, Michael,

Just curious about the purpose of the rcu_dereference_index_check() in
vhost_has_feature().  I don't see how it fits in.  The closest thing
I see if the use in handle_rx(), where it selects vq->log or NULL.  But
in that case, I would expect the usual RCU usage pattern to wrap an
rcu_dereference() around the vq->log.

Enlightenment?

							Thanx, Paul

--
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/