From: Darren Jenkins <darrenrjenkins@gmail.com>
To: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Cc: "Kao, Cindy H" <cindy.h.kao@intel.com>,
"wimax@linuxwimax.org" <wimax@linuxwimax.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"kernel-janitors@vger.kernel.org"
<kernel-janitors@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-wimax <linux-wimax@intel.com>,
David Miller <davem@davemloft.net>
Subject: Re: [PATCH] drivers/net/wimax/i2400m/fw.c fix possible double free
Date: Thu, 18 Mar 2010 19:46:48 +1100 [thread overview]
Message-ID: <1268902008.10536.41.camel@ICE-BOX> (raw)
On Thu, Mar 18, 2010 at 9:10 AM, Inaky Perez-Gonzalez
<inaky.perez-gonzalez@intel.com> wrote:
> If krealloc() fails to aallocate a new pointer, the old block is
> unmodified, so by doing this you are leaking a buffer allocation.
It seems you are right.
So now understanding correctly how krealloc() works I can see that the
double kfree() can only actually happen if the el_size parameter to
i2400m_zrealloc_2x() is zero, and it isn't at the two call sites.
So this was a false positive and I am sorry for the noise.
Darren J.
next reply other threads:[~2010-03-18 8:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-18 8:46 Darren Jenkins [this message]
2010-03-20 21:24 ` [PATCH] drivers/net/wimax/i2400m/fw.c fix possible double free David Miller
-- strict thread matches above, loose matches on Subject: below --
2010-03-17 12:40 Darren Jenkins
2010-03-17 22:10 ` Inaky Perez-Gonzalez
2010-03-16 11:46 Darren Jenkins
2010-03-16 21:14 ` David Miller
2010-03-17 6:05 ` Inaky Perez-Gonzalez
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