From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Dave Jones" <davej@redhat.com>,
"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 09:56:22 +0200 [thread overview]
Message-ID: <84144f020603052356r321bc78dp66263fbfc73517c6@mail.gmail.com> (raw)
In-Reply-To: <20060306072823.GF21445@redhat.com>
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.
Pekka
next prev parent reply other threads:[~2006-03-06 7:56 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-06 7:04 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 [this message]
2006-03-06 8:00 ` Dave Jones
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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