From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Gerhard Stenzel <gerhard.stenzel@de.ibm.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 3.14 12/37] vxlan: fix incorrect initializer in union vxlan_addr
Date: Mon, 13 Oct 2014 04:24:09 +0200 [thread overview]
Message-ID: <20141013022400.814990201@linuxfoundation.org> (raw)
In-Reply-To: <20141013022400.286360067@linuxfoundation.org>
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gerhard Stenzel <gstenzel@linux.vnet.ibm.com>
[ Upstream commit a45e92a599e77ee6a850eabdd0141633fde03915 ]
The first initializer in the following
union vxlan_addr ipa = {
.sin.sin_addr.s_addr = tip,
.sa.sa_family = AF_INET,
};
is optimised away by the compiler, due to the second initializer,
therefore initialising .sin.sin_addr.s_addr always to 0.
This results in netlink messages indicating a L3 miss never contain the
missed IP address. This was observed with GCC 4.8 and 4.9. I do not know about previous versions.
The problem affects user space programs relying on an IP address being
sent as part of a netlink message indicating a L3 miss.
Changing
.sa.sa_family = AF_INET,
to
.sin.sin_family = AF_INET,
fixes the problem.
Signed-off-by: Gerhard Stenzel <gerhard.stenzel@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1334,7 +1334,7 @@ static int arp_reduce(struct net_device
} else if (vxlan->flags & VXLAN_F_L3MISS) {
union vxlan_addr ipa = {
.sin.sin_addr.s_addr = tip,
- .sa.sa_family = AF_INET,
+ .sin.sin_family = AF_INET,
};
vxlan_ip_miss(dev, &ipa);
@@ -1495,7 +1495,7 @@ static int neigh_reduce(struct net_devic
} else if (vxlan->flags & VXLAN_F_L3MISS) {
union vxlan_addr ipa = {
.sin6.sin6_addr = msg->target,
- .sa.sa_family = AF_INET6,
+ .sin6.sin6_family = AF_INET6,
};
vxlan_ip_miss(dev, &ipa);
@@ -1528,7 +1528,7 @@ static bool route_shortcircuit(struct ne
if (!n && (vxlan->flags & VXLAN_F_L3MISS)) {
union vxlan_addr ipa = {
.sin.sin_addr.s_addr = pip->daddr,
- .sa.sa_family = AF_INET,
+ .sin.sin_family = AF_INET,
};
vxlan_ip_miss(dev, &ipa);
@@ -1549,7 +1549,7 @@ static bool route_shortcircuit(struct ne
if (!n && (vxlan->flags & VXLAN_F_L3MISS)) {
union vxlan_addr ipa = {
.sin6.sin6_addr = pip6->daddr,
- .sa.sa_family = AF_INET6,
+ .sin6.sin6_family = AF_INET6,
};
vxlan_ip_miss(dev, &ipa);
next prev parent reply other threads:[~2014-10-13 2:24 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-13 2:23 [PATCH 3.14 00/37] 3.14.22-stable review Greg Kroah-Hartman
2014-10-13 2:23 ` [PATCH 3.14 01/37] netlink: reset network header before passing to taps Greg Kroah-Hartman
2014-10-13 2:23 ` [PATCH 3.14 02/37] rtnetlink: fix VF info size Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 03/37] net: Always untag vlan-tagged traffic on input Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 04/37] myri10ge: check for DMA mapping errors Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 05/37] i40e: Dont stop driver probe when querying DCB config fails Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 06/37] tcp: dont use timestamp from repaired skb-s to calculate RTT (v2) Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 07/37] sit: Fix ipip6_tunnel_lookup device matching criteria Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 08/37] tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced() Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 09/37] tcp: fix ssthresh and undo for consecutive short FRTO episodes Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 10/37] packet: handle too big packets for PACKET_V3 Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 11/37] openvswitch: fix panic with multiple vlan headers Greg Kroah-Hartman
2014-10-13 2:24 ` Greg Kroah-Hartman [this message]
2014-10-13 2:24 ` [PATCH 3.14 13/37] l2tp: fix race while getting PMTU on PPP pseudo-wire Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 14/37] ipv6: fix rtnl locking in setsockopt for anycast and multicast Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 15/37] bonding: fix div by zero while enslaving and transmitting Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 16/37] ipv6: restore the behavior of ipv6_sock_ac_drop() Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 17/37] bridge: Check if vlan filtering is enabled only once Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 18/37] bridge: Fix br_should_learn to check vlan_enabled Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 19/37] net: allow macvlans to move to net namespace Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 20/37] tg3: Work around HW/FW limitations with vlan encapsulated frames Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 21/37] tg3: Allow for recieve of full-size 8021AD frames Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 22/37] xfrm: Generate blackhole routes only from route lookup functions Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 23/37] xfrm: Generate queueing " Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 24/37] macvtap: Fix race between device delete and open Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 25/37] Revert "net/macb: add pinctrl consumer support" Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 26/37] gro: fix aggregation for skb using frag_list Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 27/37] hyperv: Fix a bug in netvsc_start_xmit() Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 28/37] ip6_gre: fix flowi6_proto value in xmit path Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 29/37] team: avoid race condition in scheduling delayed work Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 30/37] sctp: handle association restarts when the socket is closed Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 31/37] tcp: fixing TLPs FIN recovery Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 32/37] USB: Add device quirk for ASUS T100 Base Station keyboard Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 33/37] USB: serial: cp210x: added Ketra N1 wireless interface support Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 34/37] USB: cp210x: add support for Seluxit USB dongle Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 35/37] usb: musb: dsps: kill OTG timer on suspend Greg Kroah-Hartman
2014-10-13 2:24 ` [PATCH 3.14 36/37] crypto: caam - fix addressing of struct member Greg Kroah-Hartman
2014-10-14 8:31 ` Cristian Stoica
2014-10-14 8:38 ` Greg Kroah-Hartman
2014-10-14 8:48 ` Cristian Stoica
2014-10-13 2:24 ` [PATCH 3.14 37/37] serial: 8250: Add Quark X1000 to 8250_pci.c Greg Kroah-Hartman
2014-10-13 15:18 ` [PATCH 3.14 00/37] 3.14.22-stable review Guenter Roeck
2014-10-13 20:31 ` Shuah Khan
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