linux-kernel - Re: [PATCH AUTOSEL 4.19 034/258] sctp: Fix SKB list traversal in sctp_intl_store

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Message-ID: <20190128170434.GA10665@localhost.localdomain>
Date:   Mon, 28 Jan 2019 15:04:34 -0200
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        linux-sctp@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 4.19 034/258] sctp: Fix SKB list traversal in
 sctp_intl_store_reasm().

On Mon, Jan 28, 2019 at 10:55:40AM -0500, Sasha Levin wrote:
> From: "David S. Miller" <davem@...emloft.net>
> 
> [ Upstream commit 348bbc25c40844c5efa083a3842c7f53d70a815e ]
> 
> To be fully correct, an iterator has an undefined value when something
> like skb_queue_walk() naturally terminates.
> 
> This will actually matter when SKB queues are converted over to
> list_head.
> 
> Formalize what this code ends up doing with the current
> implementation.

I don't think this patch is really needed for -stable without the SKB
queue convertion, but okay.

  Marcelo