Merge pull request #442 from ecsv/batadv-18.06
openwrt-18.06: batman-adv: Merge bugfixes from 2019.0
This commit is contained in:
commit
ea345d16a6
|
@ -0,0 +1,48 @@
|
|||
From: Sven Eckelmann <sven@narfation.org>
|
||||
Date: Sun, 30 Dec 2018 12:46:01 +0100
|
||||
Subject: [PATCH] batman-adv: Avoid WARN on net_device without parent in netns
|
||||
|
||||
It is not allowed to use WARN* helpers on potential incorrect input from
|
||||
the user or transient problems because systems configured as panic_on_warn
|
||||
will reboot due to such a problem.
|
||||
|
||||
A NULL return value of __dev_get_by_index can be caused by various problems
|
||||
which can either be related to the system configuration or problems
|
||||
(incorrectly returned network namespaces) in other (virtual) net_device
|
||||
drivers. batman-adv should not cause a (harmful) WARN in this situation and
|
||||
instead only report it via a simple message.
|
||||
|
||||
Fixes: 3d48811b27f5 ("batman-adv: prevent using any virtual device created on batman-adv as hard-interface")
|
||||
Reported-by: syzbot+c764de0fcfadca9a8595@syzkaller.appspotmail.com
|
||||
Reported-by: Dmitry Vyukov <dvyukov@google.com>
|
||||
Signed-off-by: Sven Eckelmann <sven@narfation.org>
|
||||
|
||||
Origin: upstream, https://git.open-mesh.org/batman-adv.git/commit/59ad04405be86f648fd83d81d2fd0a78f215a43b
|
||||
---
|
||||
net/batman-adv/hard-interface.c | 5 +++--
|
||||
1 file changed, 3 insertions(+), 2 deletions(-)
|
||||
|
||||
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
|
||||
index 2f0d42f2f913e74cf10c0c6ce89320434994cac5..08690d06b7be2b25ca3f009394763c7083c70644 100644
|
||||
--- a/net/batman-adv/hard-interface.c
|
||||
+++ b/net/batman-adv/hard-interface.c
|
||||
@@ -20,7 +20,6 @@
|
||||
#include "main.h"
|
||||
|
||||
#include <linux/atomic.h>
|
||||
-#include <linux/bug.h>
|
||||
#include <linux/byteorder/generic.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/gfp.h>
|
||||
@@ -179,8 +178,10 @@ static bool batadv_is_on_batman_iface(const struct net_device *net_dev)
|
||||
parent_dev = __dev_get_by_index((struct net *)parent_net,
|
||||
dev_get_iflink(net_dev));
|
||||
/* if we got a NULL parent_dev there is something broken.. */
|
||||
- if (WARN(!parent_dev, "Cannot find parent device"))
|
||||
+ if (!parent_dev) {
|
||||
+ pr_err("Cannot find parent device\n");
|
||||
return false;
|
||||
+ }
|
||||
|
||||
if (batadv_mutual_parents(net_dev, net, parent_dev, parent_net))
|
||||
return false;
|
|
@ -0,0 +1,39 @@
|
|||
From: Sven Eckelmann <sven@narfation.org>
|
||||
Date: Mon, 31 Dec 2018 22:46:09 +0100
|
||||
Subject: [PATCH] batman-adv: Force mac header to start of data on xmit
|
||||
|
||||
The caller of ndo_start_xmit may not already have called
|
||||
skb_reset_mac_header. The returned value of skb_mac_header/eth_hdr
|
||||
therefore can be in the wrong position and even outside the current skbuff.
|
||||
This for example happens when the user binds to the device using a
|
||||
PF_PACKET-SOCK_RAW with enabled qdisc-bypass:
|
||||
|
||||
int opt = 4;
|
||||
setsockopt(sock, SOL_PACKET, PACKET_QDISC_BYPASS, &opt, sizeof(opt));
|
||||
|
||||
Since eth_hdr is used all over the codebase, the batadv_interface_tx
|
||||
function must always take care of resetting it.
|
||||
|
||||
Fixes: fe28a94c01e1 ("batman-adv: receive packets directly using skbs")
|
||||
Reported-by: syzbot+9d7405c7faa390e60b4e@syzkaller.appspotmail.com
|
||||
Reported-by: syzbot+7d20bc3f1ddddc0f9079@syzkaller.appspotmail.com
|
||||
Signed-off-by: Sven Eckelmann <sven@narfation.org>
|
||||
|
||||
Origin: upstream, https://git.open-mesh.org/batman-adv.git/commit/74c4b0c50f19f986752ee18ed393732f4eed7a66
|
||||
---
|
||||
net/batman-adv/soft-interface.c | 2 ++
|
||||
1 file changed, 2 insertions(+)
|
||||
|
||||
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
|
||||
index 79d6ab78359db9c6a5df14e2e204c611ab134dfc..d3f540ba2a1388a8aa693a539d01d6a1cad95b44 100644
|
||||
--- a/net/batman-adv/soft-interface.c
|
||||
+++ b/net/batman-adv/soft-interface.c
|
||||
@@ -221,6 +221,8 @@ static int batadv_interface_tx(struct sk_buff *skb,
|
||||
|
||||
netif_trans_update(soft_iface);
|
||||
vid = batadv_get_vid(skb, 0);
|
||||
+
|
||||
+ skb_reset_mac_header(skb);
|
||||
ethhdr = eth_hdr(skb);
|
||||
|
||||
switch (ntohs(ethhdr->h_proto)) {
|
Loading…
Reference in New Issue