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Re: [tipc-discussion] [PATCH net] tipc: check skb_linearize() return value in tipc_disc_rcv()
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From: Jon M. <jm...@re...> - 2022-11-22 00:48:32
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On 11/19/22 02:28, YueHaibing wrote:
> If skb_linearize() fails in tipc_disc_rcv(), we need to free the skb instead of
> handle it.
>
> Fixes: 25b0b9c4e835 ("tipc: handle collisions of 32-bit node address hash values")
> Signed-off-by: YueHaibing <yue...@hu...>
> ---
> net/tipc/discover.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/net/tipc/discover.c b/net/tipc/discover.c
> index e8630707901e..e8dcdf267c0c 100644
> --- a/net/tipc/discover.c
> +++ b/net/tipc/discover.c
> @@ -211,7 +211,10 @@ void tipc_disc_rcv(struct net *net, struct sk_buff *skb,
> u32 self;
> int err;
>
> - skb_linearize(skb);
> + if (skb_linearize(skb)) {
> + kfree_skb(skb);
> + return;
> + }
> hdr = buf_msg(skb);
>
> if (caps & TIPC_NODE_ID128)
Acked-by: Jon Maloy <jm...@re...>
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