linux-kernel - Re: races in ipathfs

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Message-ID: <20120318224007.GF6589@ZenIV.linux.org.uk>
Date:	Sun, 18 Mar 2012 22:40:07 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Mike Marciniszyn <infinipath@...gic.com>
Cc:	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: races in ipathfs

On Sun, Mar 18, 2012 at 06:45:47PM +0000, Al Viro wrote:
> On Thu, Jan 19, 2012 at 08:20:04PM +0000, Al Viro wrote:
> > 	Use of qib_super is seriously racy.  qibfs_add() (and worse,
> > qibfs_remove()) can happen during qibfs_mount() and qibfs_kill_super().
> 
> [snip]
> 
> FWIW, I've put a completely untested patchset into
> git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git qibfs

Corresponding fix for ipathfs added to the same branch; again, completely
untested.
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