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Date:   Wed, 25 Sep 2019 13:45:54 +0200 (CEST)
From:   David Miller <>
Subject: Re: [PATCH net] ppp: Fix memory leak in ppp_write

From: Takeshi Misawa <>
Date: Sun, 22 Sep 2019 16:45:31 +0900

> When ppp is closing, __ppp_xmit_process() failed to enqueue skb
> and skb allocated in ppp_write() is leaked.
> syzbot reported :
> Fix this by freeing skb, if ppp is closing.
> Fixes: 6d066734e9f0 ("ppp: avoid loop in xmit recursion detection code")
> Reported-and-tested-by:
> Signed-off-by: Takeshi Misawa <>

Applied and queued up for -stable.

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