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android_kernel_oneplus_msm8998/net/batman-adv
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Sven Eckelmann b2942d59a3 batman-adv: Force mac header to start of data on xmit 
commit 9114daa825fc3f335f9bea3313ce667090187280 upstream.

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: c6c8fea297 ("net: Add batman-adv meshing protocol")
Reported-by: syzbot+9d7405c7faa390e60b4e@syzkaller.appspotmail.com
Reported-by: syzbot+7d20bc3f1ddddc0f9079@syzkaller.appspotmail.com
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-20 10:13:20 +01:00
..
bat_algo.h batman-adv: update copyright years for 2015 2015-05-29 10:13:35 +02:00
bat_iv_ogm.c batman-adv: rearrange batadv_neigh_node_new() arguments to follow convention 2015-08-27 20:15:32 +02:00
bitarray.c batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
bitarray.h batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
bridge_loop_avoidance.c batman-adv: handle race condition for claims between gateways 2018-03-22 09:23:21 +01:00
bridge_loop_avoidance.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
debugfs.c batman-adv: Add required includes to all files 2015-06-07 17:07:19 +02:00
debugfs.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
distributed-arp-table.c batman-adv: fix header size check in batadv_dbg_arp() 2018-05-30 07:49:05 +02:00
distributed-arp-table.h batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
fragmentation.c batman-adv: Expand merged fragment buffer for full packet 2018-12-13 09:21:34 +01:00
fragmentation.h batman-adv: Add required includes to all files 2015-06-07 17:07:19 +02:00
gateway_client.c batman-adv: fix packet loss for broadcasted DHCP packets to a server 2018-05-30 07:49:06 +02:00
gateway_client.h batman-adv: remove obsolete deleted attribute for gateway node 2015-08-27 20:15:32 +02:00
gateway_common.c batman-adv: Fix gw_bandwidth calculation on 32 bit systems 2015-08-25 00:12:22 +02:00
gateway_common.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
hard-interface.c batman-adv: Avoid WARN on net_device without parent in netns 2019-02-20 10:13:20 +01:00
hard-interface.h batman-adv: Drop immediate batadv_hard_iface free function 2016-01-31 11:29:02 -08:00
hash.c batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
hash.h batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
icmp_socket.c batman-adv: Fix kerneldoc over 80 column lines 2015-08-25 00:12:18 +02:00
icmp_socket.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
Kconfig batman-adv: Kconfig, Add missing DEBUG_FS dependency 2015-01-07 22:17:11 +01:00
main.c batman-adv: remove obsolete deleted attribute for gateway node 2015-08-27 20:15:32 +02:00
main.h batman-adv: Start new development cycle 2015-08-27 20:15:33 +02:00
Makefile batman-adv: Makefile, Sort alphabetically 2015-05-29 10:13:36 +02:00
multicast.c batman-adv: fix multicast-via-unicast transmission with AP isolation 2018-05-30 07:49:06 +02:00
multicast.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
network-coding.c batman-adv: Avoid recursive call_rcu for batadv_nc_node 2016-01-31 11:29:02 -08:00
network-coding.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
originator.c batman-adv: remove unused callback from batadv_algo_ops struct 2016-10-07 15:23:47 +02:00
originator.h batman-adv: Drop immediate orig_node free function 2016-01-31 11:29:02 -08:00
packet.h batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
routing.c batman-adv: Reduce refcnt of removed router when updating route 2016-05-11 11:21:18 +02:00
routing.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
send.c batman-adv: Fix broadcast/ogm queue limit on a removed interface 2016-05-11 11:21:17 +02:00
send.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
soft-interface.c batman-adv: Force mac header to start of data on xmit 2019-02-20 10:13:20 +01:00
soft-interface.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
sysfs.c batman-adv: Replace C99 int types with kernel type 2015-08-25 00:12:17 +02:00
sysfs.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
translation-table.c batman-adv: Check for alloc errors when preparing TT local data 2016-12-15 08:49:23 -08:00
translation-table.h batman-adv: Remove batadv_ types forward declarations 2015-08-25 00:12:20 +02:00
types.h batman-adv: remove unused callback from batadv_algo_ops struct 2016-10-07 15:23:47 +02:00