Just installed in on some hardware (2x OM5P + OpenWrt 44654 + compat-wireless 2015-10-26) and enabled BATMAN_V.
/etc/config/wireless: ====================
config wifi-iface 'wmesh' option device 'radio0' option ifname 'adhoc0' option network 'batnet' option mode 'adhoc' option ssid 'mesh' option 'mcast_rate' '18000' option bssid '02:CA:FE:CA:CA:40'
/etc/config/network ===================
config interface 'batnet' option mtu '1532' option proto 'batadv' option mesh 'bat0' option routing_algo 'BATMAN_V'
The result was: ==============
[ 168.540000] CPU 0 Unable to handle kernel paging request at virtual address fffffff0, epc == 86d8301c, ra == 86d8301c [ 168.550000] Oops[#1]: [ 168.550000] CPU: 0 PID: 265 Comm: kworker/u2:2 Tainted: P 3.18.8 #1 [ 168.550000] Workqueue: bat_events batadv_v_elp_throughput_metric_update [batman_adv] [ 168.550000] task: 878826c0 ti: 87a24000 task.ti: 87a24000 [ 168.550000] $ 0 : 00000000 00000001 00000000 fffffffe [ 168.550000] $ 4 : 86a5cf00 00000000 00000000 00000000 [ 168.550000] $ 8 : 00000011 c4653600 ffffffff 00000001 [ 168.550000] $12 : 00000000 0000000c 00000000 00000000 [ 168.550000] $16 : 00000000 00000000 87804a1e 868f5000 [ 168.550000] $20 : 00000000 00000000 87804a10 87804a00 [ 168.550000] $24 : 00000002 86d1a0e4 [ 168.550000] $28 : 87a24000 87a25e40 00000088 86d8301c [ 168.550000] Hi : 00000000 [ 168.550000] Lo : 00000000 [ 168.550000] epc : 86d8301c batadv_v_elp_throughput_metric_update+0x20/0x58 [batman_adv] [ 168.550000] Tainted: P [ 168.550000] ra : 86d8301c batadv_v_elp_throughput_metric_update+0x20/0x58 [batman_adv] [ 168.550000] Status: 1100fc03 KERNEL EXL IE [ 168.550000] Cause : 00800008 [ 168.550000] BadVA : fffffff0 [ 168.550000] PrId : 00019750 (MIPS 74Kc) [ 168.550000] Modules linked in: iptable_nat ath9k nf_nat_pptp nf_nat_ipv4 nf_nat_amanda nf_conntrack_pptp nf_conntrack_ipv6 nf_conntrack_ipv4 nf_conntrack_amanda ipt_REJECT ipt_MASQUERADE ath9k_common xt_time xt_tcpudp xt_tcpmss xt_string xt_statistic xt_state xt_recent xt_quota xt_pkttype xt_physdev xt_owner xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_addrtype xt_TCPMSS xt_REDIRECT xt_NETMAP xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY ts_kmp ts_fsm ts_bm nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtcache nf_conntrack_proto_gre nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt ath9k_hw em_nbyte sch_codel sch_prio sch_dsmark act_ipt sch_gred em_meta sch_htb cls_basic sch_netem act_police em_text sch_tbf sch_sfq em_cmp sch_red act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress tmp421 hwmon batman_adv libcrc32c crc16 ath10k_pci ath10k_core ath mac80211 cfg80211 compat UDSMARK udsmac i2c_dev tc_classid_mapper(P) filter_group classifier_dns(P) classifier_netblock(P) classifier_bittorrent(P) classifier_rtmp(P) classifier_ssl(P) classifier_content(P) classifier_skype(P) kernel_classifier nf_conntrack xt_set ip_set_list_set ip_set_hash_netport ip_set_hash_netiface ip_set_hash_net ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables ifb tun ipv6 arc4 crypto_blkcipher input_polldev gpio_button_hotplug button_hotplug input_core ag71xx crc32c_generic crypto_hash [ 168.550000] Process kworker/u2:2 (pid: 265, threadinfo=87a24000, task=878826c0, tls=00000000) [ 168.550000] Stack : 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 803496de 800665ac 00000000 00000000 00000000 00000000 00000000 00000000 87804a00 879cf198 8030bb3e 00000001 00000000 00000000 00000000 00000000 00000010 80123ad4 879fa100 801232d0 879cf21e 879cf180 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fffffffe 00000002 ... [ 168.550000] Call Trace: [ 168.550000] [<86d8301c>] batadv_v_elp_throughput_metric_update+0x20/0x58 [batman_adv] [ 168.550000] [ 168.550000]