From: Takeshi Misawa <jeliantsu...@gmail.com>
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: syzbot+d9c8bf24e56416d7c...@syzkaller.appspotmail.com
> Signed-off-by: Takeshi Misawa <jeliantsu...@gmail.com>
Applied and queued up for -stable.
