From: Dave Jones <davej@redhat.com>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Al Viro <viro@ftp.linux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
linux-kernel@vger.kernel.org, ericvh@gmail.com,
rminnich@lanl.gov
Subject: Re: 9pfs double kfree
Date: Mon, 6 Mar 2006 03:00:10 -0500 [thread overview]
Message-ID: <20060306080010.GJ21445@redhat.com> (raw)
In-Reply-To: <84144f020603052356r321bc78dp66263fbfc73517c6@mail.gmail.com>
On Mon, Mar 06, 2006 at 09:56:22AM +0200, Pekka Enberg wrote:
> On 3/6/06, Dave Jones <davej@redhat.com> wrote:
> > I wonder if we could get away with something as simple as..
> >
> > #define kfree(foo) \
> > __kfree(foo); \
> > foo = KFREE_POISON;
> >
> > ?
>
> It's legal to call kfree() twice for NULL pointer. The above poisons
> foo unconditionally which makes that case break I think.
Bah, I never did like that rule.
Dave
--
http://www.codemonkey.org.uk
next prev parent reply other threads:[~2006-03-06 8:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-06 7:04 9pfs double kfree Dave Jones
2006-03-06 7:07 ` David S. Miller
2006-03-06 7:23 ` Al Viro
2006-03-06 7:28 ` Dave Jones
2006-03-06 7:56 ` Pekka Enberg
2006-03-06 8:00 ` Dave Jones [this message]
2006-03-06 8:16 ` Al Viro
2006-03-06 8:23 ` Pekka Enberg
2006-03-06 8:27 ` Arjan van de Ven
2006-03-06 8:40 ` Kai Makisara
2006-03-06 9:34 ` Al Viro
2006-03-06 22:07 ` Pavel Machek
2006-03-09 14:48 ` Luke-Jr
2006-03-06 7:26 ` Balbir Singh
2006-03-06 7:31 ` Dave Jones
2006-03-06 7:39 ` Balbir Singh
2006-03-07 0:37 ` Andrew Morton
2006-03-07 1:04 ` Eric Van Hensbergen
2006-03-07 2:20 ` Latchesar Ionkov
2006-03-07 1:49 ` Latchesar Ionkov
2006-03-07 12:43 ` [PATCH] v9fs: fix for access to unitialized variables or freed memory Latchesar Ionkov
2006-03-07 23:04 ` Andrew Morton
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