All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Alexei Starovoitov <ast@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>,
	netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH 1/2] bpf: sockmap, double free in __sock_map_ctx_update_elem()
Date: Fri, 18 May 2018 07:58:10 +0000	[thread overview]
Message-ID: <20180518075810.GA28285@mwanda> (raw)

We accidentally free "e" twice.

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

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Alexei Starovoitov <ast@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>,
	netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH 1/2] bpf: sockmap, double free in __sock_map_ctx_update_elem()
Date: Fri, 18 May 2018 10:58:10 +0300	[thread overview]
Message-ID: <20180518075810.GA28285@mwanda> (raw)

We accidentally free "e" twice.

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

             reply	other threads:[~2018-05-18  7:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-18  7:58 Dan Carpenter [this message]
2018-05-18  7:58 ` [PATCH 1/2] bpf: sockmap, double free in __sock_map_ctx_update_elem() Dan Carpenter
2018-05-18  8:27 ` Daniel Borkmann
2018-05-18  8:27   ` Daniel Borkmann
2018-05-18 14:39   ` Dan Carpenter
2018-05-18 14:39     ` Dan Carpenter
2018-05-19  0:17     ` Gustavo A. R. Silva
2018-05-19  0:17       ` Gustavo A. R. Silva

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180518075810.GA28285@mwanda \
    --to=dan.carpenter@oracle.com \
    --cc=ast@kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=john.fastabend@gmail.com \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.