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Message-ID: <20180518075810.GA28285@mwanda>
Date:   Fri, 18 May 2018 10:58:10 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        John Fastabend <john.fastabend@...il.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/2] bpf: sockmap, double free in __sock_map_ctx_update_elem()

We accidentally free "e" twice.

Fixes: 81110384441a ("bpf: sockmap, add hash map support")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/kernel/bpf/sockmap.c b/kernel/bpf/sockmap.c
index c6de1393df63..216d5c9b0eb3 100644
--- a/kernel/bpf/sockmap.c
+++ b/kernel/bpf/sockmap.c
@@ -1833,7 +1833,6 @@ static int __sock_map_ctx_update_elem(struct bpf_map *map,
 	if (tx_msg)
 		bpf_prog_put(tx_msg);
 	write_unlock_bh(&sock->sk_callback_lock);
-	kfree(e);
 	return err;
 }
 

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