From: Greg KH <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, "RongQing.Li" <roy.qing.li@gmail.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [ 7/9] ipv6: Dont dev_hold(dev) in ip6_mc_find_dev_rcu.
Date: Wed, 21 Mar 2012 14:15:39 -0700 [thread overview]
Message-ID: <20120321211533.367387452@linuxfoundation.org> (raw)
In-Reply-To: <20120321211539.GA28899@kroah.com>
3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: RongQing.Li <roy.qing.li@gmail.com>
[ Upstream commit c577923756b7fe9071f28a76b66b83b306d1d001 ]
ip6_mc_find_dev_rcu() is called with rcu_read_lock(), so don't
need to dev_hold().
With dev_hold(), not corresponding dev_put(), will lead to leak.
[ bug introduced in 96b52e61be1 (ipv6: mcast: RCU conversions) ]
Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv6/mcast.c | 1 -
1 file changed, 1 deletion(-)
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -257,7 +257,6 @@ static struct inet6_dev *ip6_mc_find_dev
if (rt) {
dev = rt->rt6i_dev;
- dev_hold(dev);
dst_release(&rt->dst);
}
} else
next prev parent reply other threads:[~2012-03-21 21:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-21 21:15 [ 0/9] 3.2.13-stable review Greg KH
2012-03-21 21:15 ` [ 1/9] nilfs2: fix NULL pointer dereference in nilfs_load_super_block() Greg KH
2012-03-21 21:15 ` [ 2/9] afs: Read of file returns EBADMSG Greg KH
2012-03-21 21:15 ` [ 3/9] afs: Remote abort can cause BUG in rxrpc code Greg KH
2012-03-21 21:15 ` [ 4/9] perf tools: Incorrect use of snprintf results in SEGV Greg KH
2012-03-21 21:15 ` [ 5/9] perf tools: Use scnprintf where applicable Greg KH
2012-03-21 21:15 ` [ 6/9] tcp: fix syncookie regression Greg KH
2012-03-21 21:15 ` Greg KH [this message]
2012-03-21 21:15 ` [ 8/9] iwl3945: fix possible il->txq NULL pointer dereference in delayed works Greg KH
2012-03-21 21:15 ` [ 9/9] powerpc/pmac: Fix SMP kernels on pre-core99 UP machines Greg KH
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