Netdev Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Yajun Deng <yajun.deng@linux.dev>
To: pablo@netfilter.org, kadlec@netfilter.org, fw@strlen.de
Cc: netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
	bridge@lists.linux-foundation.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, Yajun Deng <yajun.deng@linux.dev>
Subject: [PATCH v3] netfilter: nf_conntrack_bridge: Fix memory leak when error
Date: Thu, 29 Jul 2021 16:20:21 +0800	[thread overview]
Message-ID: <20210729082021.14407-1-yajun.deng@linux.dev> (raw)

It should be added kfree_skb_list() when err is not equal to zero
in nf_br_ip_fragment().

v2: keep this aligned with IPv6.
v3: modify iter.frag_list to iter.frag.

Fixes: 3c171f496ef5 ("netfilter: bridge: add connection tracking system")
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
---
 net/bridge/netfilter/nf_conntrack_bridge.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/bridge/netfilter/nf_conntrack_bridge.c b/net/bridge/netfilter/nf_conntrack_bridge.c
index 8d033a75a766..d184306e1ba8 100644
--- a/net/bridge/netfilter/nf_conntrack_bridge.c
+++ b/net/bridge/netfilter/nf_conntrack_bridge.c
@@ -88,6 +88,11 @@ static int nf_br_ip_fragment(struct net *net, struct sock *sk,
 
 			skb = ip_fraglist_next(&iter);
 		}
+
+		if (!err)
+			return 0;
+
+		kfree_skb_list(iter.frag);
 		return err;
 	}
 slow_path:
-- 
2.32.0


             reply	other threads:[~2021-07-29  8:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29  8:20 Yajun Deng [this message]
2021-08-01 10:15 ` Pablo Neira Ayuso

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=20210729082021.14407-1-yajun.deng@linux.dev \
    --to=yajun.deng@linux.dev \
    --cc=bridge@lists.linux-foundation.org \
    --cc=coreteam@netfilter.org \
    --cc=fw@strlen.de \
    --cc=kadlec@netfilter.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=netfilter-devel@vger.kernel.org \
    --cc=pablo@netfilter.org \
    --subject='Re: [PATCH v3] netfilter: nf_conntrack_bridge: Fix memory leak when error' \
    /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

This is a public inbox, see mirroring instructions
on how to clone and mirror all data and code used for this inbox