From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: linux-sctp@vger.kernel.org, netdev@vger.kernel.org,
syzbot+f7e9153b037eac9b1df8@syzkaller.appspotmail.com,
Xin Long <lucien.xin@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH v4 net] sctp: Free cookie before we memdup a new one
Date: Wed, 12 Jun 2019 15:07:15 -0300 [thread overview]
Message-ID: <20190612180715.GC3500@localhost.localdomain> (raw)
In-Reply-To: <20190612003814.7219-1-nhorman@tuxdriver.com>
On Tue, Jun 11, 2019 at 08:38:14PM -0400, Neil Horman wrote:
> Based on comments from Xin, even after fixes for our recent syzbot
> report of cookie memory leaks, its possible to get a resend of an INIT
> chunk which would lead to us leaking cookie memory.
>
> To ensure that we don't leak cookie memory, free any previously
> allocated cookie first.
>
> ---
This marker can't be here, as it causes git to loose everything below.
> Change notes
> v1->v2
> update subsystem tag in subject (davem)
> repeat kfree check for peer_random and peer_hmacs (xin)
>
> v2->v3
> net->sctp
> also free peer_chunks
>
> v3->v4
> fix subject tags
>
> Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
> Reported-by: syzbot+f7e9153b037eac9b1df8@syzkaller.appspotmail.com
> CC: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> CC: Xin Long <lucien.xin@gmail.com>
> CC: "David S. Miller" <davem@davemloft.net>
> CC: netdev@vger.kernel.org
Anyhow, LGTM and reproducer didn't give any hits in 2 runs of 50mins.
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
next prev parent reply other threads:[~2019-06-12 18:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-10 16:34 [PATCH] Free cookie before we memdup a new one Neil Horman
2019-06-10 16:38 ` David Miller
2019-06-10 16:54 ` Xin Long
2019-06-11 11:21 ` [PATCH v2] [net] " Neil Horman
2019-06-11 11:44 ` Marcelo Ricardo Leitner
2019-06-11 12:17 ` Marcelo Ricardo Leitner
2019-06-11 16:06 ` David Miller
2019-06-11 19:22 ` [PATCH v3] [sctp] " Neil Horman
2019-06-11 20:08 ` David Miller
2019-06-11 20:52 ` Neil Horman
2019-06-12 0:38 ` [PATCH v4 net] sctp: " Neil Horman
2019-06-12 17:58 ` Xin Long
2019-06-12 18:07 ` Marcelo Ricardo Leitner [this message]
2019-06-12 20:32 ` Neil Horman
2019-06-12 20:41 ` David Miller
2019-06-13 10:35 ` [PATCH v5 " Neil Horman
2019-06-13 16:51 ` Marcelo Ricardo Leitner
2019-06-15 2:27 ` David Miller
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