netdev - Re: [netlink] WARNING: at mm/vmalloc.c:1487 _

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Message-ID: <CAM_iQpW4VZNMo4_nBeH6Cu3E3etd72+MVsFMRWFsR0a9qV8OPw@mail.gmail.com>
Date:	Sat, 15 Jun 2013 14:06:00 +0800
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	Pablo Neira Ayuso <pablo@...filter.org>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [netlink] WARNING: at mm/vmalloc.c:1487 __vunmap()

On Sat, Jun 15, 2013 at 1:57 PM, Cong Wang <xiyou.wangcong@...il.com> wrote:
>
> Hi, Fengguang,
>
> Could you try the following quick fix?
>
> diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
> index 8978755..d8c6c03 100644
> --- a/net/netlink/af_netlink.c
> +++ b/net/netlink/af_netlink.c
> @@ -750,7 +750,7 @@ static void netlink_skb_destructor(struct sk_buff *skb)
>                 skb->head = NULL;
>         }
>  #endif
> -       if (is_vmalloc_addr(skb->head)) {
> +       else if (is_vmalloc_addr(skb->head)) {


Never mind, skb->head is already set to NULL when it is
mmap skb... so please ignore it.
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