From: Sabrina Dubroca <sd@queasysnail.net>
To: Lino Sanfilippo <lsanfil@marvell.com>
Cc: netdev@vger.kernel.org, Lance Richardson <lrichard@redhat.com>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
Johannes Berg <johannes@sipsolutions.net>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH net v2 1/9] macsec: add missing NULL check after kmalloc
Date: Fri, 22 Apr 2016 11:48:26 +0200 [thread overview]
Message-ID: <20160422094826.GA17059@bistromath.localdomain> (raw)
In-Reply-To: <5719F047.80102@marvell.com>
2016-04-22, 11:35:03 +0200, Lino Sanfilippo wrote:
>
>
> On 22.04.2016 11:28, Sabrina Dubroca wrote:
> > Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
> > Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> > Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
> > Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
> > ---
> > drivers/net/macsec.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
> > index 84d3e5ca8817..f691030ee3df 100644
> > --- a/drivers/net/macsec.c
> > +++ b/drivers/net/macsec.c
> > @@ -1622,8 +1622,8 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info)
> > }
> >
> > rx_sa = kmalloc(sizeof(*rx_sa), GFP_KERNEL);
> > - if (init_rx_sa(rx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]), secy->key_len,
> > - secy->icv_len)) {
> > + if (!rx_sa || init_rx_sa(rx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]),
> > + secy->key_len, secy->icv_len)) {
> > rtnl_unlock();
> > return -ENOMEM;
> > }
>
>
> In case that kmalloc was successful and init_rx_sa failed, the allocated memory should be freed, shouldnt it?.
Yep, Lance pointed that out in v1:
http://marc.info/?l=linux-netdev&m=146108796406155
But since we have the same code with init_tx_sa, I decided to fix both
in a separate patch (7/9 in this set).
Thanks,
--
Sabrina
next prev parent reply other threads:[~2016-04-22 9:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-22 9:28 [PATCH net v2 0/9] macsec: a few fixes Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 1/9] macsec: add missing NULL check after kmalloc Sabrina Dubroca
2016-04-22 9:35 ` Lino Sanfilippo
2016-04-22 9:48 ` Sabrina Dubroca [this message]
2016-04-22 10:06 ` Lino Sanfilippo
2016-04-22 9:28 ` [PATCH net v2 2/9] macsec: take rtnl lock before for_each_netdev Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 3/9] macsec: don't put a NULL rxsa Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 4/9] macsec: fix rx_sa refcounting with decrypt callback Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 5/9] macsec: add consistency check to netlink dumps Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 6/9] macsec: fix memory leaks around rx_handler (un)registration Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 7/9] macsec: fix SA leak if initialization fails Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 8/9] macsec: add missing macsec prefix in uapi Sabrina Dubroca
2016-04-22 9:28 ` [PATCH net v2 9/9] macsec: fix netlink attribute validation Sabrina Dubroca
2016-04-24 18:32 ` [PATCH net v2 0/9] macsec: a few fixes David Miller
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