netdev - Re: [net 1/1] tipc: eliminate potential memory leak

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Date:   Wed, 13 Dec 2017 13:45:12 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     jon.maloy@...csson.com
Cc:     netdev@...r.kernel.org,
        mohan.krishna.ghanta.krishnamurthy@...csson.com,
        tung.q.nguyen@...tech.com.au, hoang.h.le@...tech.com.au,
        canh.d.luu@...tech.com.au, ying.xue@...driver.com,
        tipc-discussion@...ts.sourceforge.net
Subject: Re: [net 1/1] tipc: eliminate potential memory leak

From: Jon Maloy <jon.maloy@...csson.com>
Date: Mon, 11 Dec 2017 19:11:55 +0100

> In the function tipc_sk_mcast_rcv() we call refcount_dec(&skb->users)
> on received sk_buffers. Since the reference counter might hit zero at
> this point, we have a potential memory leak.
> 
> We fix this by replacing refcount_dec() with kfree_skb().
> 
> Signed-off-by: Jon Maloy <jon.maloy@...csson.com>

Applied and queued up for -stable.