>Subject: [PATCH net] tipc: fix a possible memleak in tipc_buf_append
>
>__skb_linearize() doesn't free the skb when it fails, so move '*buf = NULL'
>after __skb_linearize(), so that the skb can be freed on the
>err path.
>
>Fixes: b7df21cf1b79 ("tipc: skb_linearize the head skb when reassembling msgs")
>Reported-by: Paolo Abeni <[email protected]>
>Signed-off-by: Xin Long <[email protected]>
>---
> net/tipc/msg.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/net/tipc/msg.c b/net/tipc/msg.c index 5c9fd4791c4b..c52ab423082c
>100644
>--- a/net/tipc/msg.c
>+++ b/net/tipc/msg.c
>@@ -142,9 +142,9 @@ int tipc_buf_append(struct sk_buff **headbuf, struct
>sk_buff **buf)
> if (fragid == FIRST_FRAGMENT) {
> if (unlikely(head))
> goto err;
>- *buf = NULL;
> if (skb_has_frag_list(frag) && __skb_linearize(frag))
> goto err;
>+ *buf = NULL;
> frag = skb_unshare(frag, GFP_ATOMIC);
> if (unlikely(!frag))
> goto err;
>--
>2.43.0
Reviewed-by: Tung Nguyen <[email protected]>
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