B.A.T.M.A.N

b.a.t.m.a.n@lists.open-mesh.org

15 participants
4308 discussions

[B.A.T.M.A.N.] [PATCH] alfred: Switch to HTTPS version of links
by Sven Eckelmann 06 Dec '15

06 Dec '15

open-mesh.org and its subdomains can only be accessed via HTTPS. HTTP-only requests are currently redirected automatically to HTTPS but references in the source code should be only https. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- README | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README b/README index 6bbf915..fbca7d1 100644 --- a/README +++ b/README @@ -312,7 +312,7 @@ Mailing-list: b.a.t.m.a.n(a)lists.open-mesh.org (optional subscription If you have test reports/patches/ideas, please read the wiki for further instruction on how to contribute: -http://www.open-mesh.org/projects/open-mesh/wiki/Contribute +https://www.open-mesh.org/projects/open-mesh/wiki/Contribute You can also contact the Authors: -- 2.6.2

1 0

[B.A.T.M.A.N.] [PATCH net-next 0/4] Allow BATMAN to use hdlc-eth interfaces
by Andrew Lunn 05 Dec '15

05 Dec '15

BATMAN works over Ethernet like interfaces. hdlc-eth provides the need requirements. However, hdlc devices are often created as raw hdlc devices, which batman cannot use, and are then be transmuted into other types using sethdlc(1). Have the HDLC code emit NETDEV_*_TYPE_CHANGE events when the type changes, and have BATMAN react on these events. Andrew Lunn (4): WAN: HDLC: Detach protocol before unregistering device WAN: HDLC: Call notifiers before and after changing device type ipv6: Only act upon NETDEV_*_TYPE_CHANGE if we have ipv6 addresses batman-adv: Act on NETDEV_*_TYPE_CHANGE events drivers/net/wan/hdlc.c | 21 ++++++++++++++++++--- drivers/net/wan/hdlc_cisco.c | 1 + drivers/net/wan/hdlc_fr.c | 1 + drivers/net/wan/hdlc_ppp.c | 1 + drivers/net/wan/hdlc_raw.c | 1 + drivers/net/wan/hdlc_raw_eth.c | 1 + drivers/net/wan/hdlc_x25.c | 1 + include/linux/hdlc.h | 2 +- net/batman-adv/hard-interface.c | 4 +++- net/ipv6/addrconf.c | 3 ++- 10 files changed, 30 insertions(+), 6 deletions(-) -- 2.6.2

2 5

[B.A.T.M.A.N.] Invalid memory access during if add/del with multiple interfaces
by Sven Eckelmann 29 Nov '15

29 Nov '15

Hi, I've just configured two kvm nodes [1] and interconnected them via ethernet and gretap. The used batman-adv version was v2015.1-115-g5b0b10e. The first node initialized via: insmod /host/batman-adv/net/batman-adv/batman-adv.ko /host/batctl/batctl if add eth0 ifconfig bat0 up ip link add testgre type gretap remote 192.168.2.52 local 192.168.2.51 ttl 255 ifconfig testgre 192.168.3.51 ifconfig bat0 192.168.4.51 /host/batctl/batctl if add testgre The second node was initialized via: insmod /host/batman-adv/net/batman-adv/batman-adv.ko /host/batctl/batctl if add eth0 ifconfig bat0 up ip link add testgre type gretap remote 192.168.2.51 local 192.168.2.52 ttl 255 ifconfig testgre 192.168.3.52 ifconfig bat0 192.168.4.52 /host/batctl/batctl if add testgre The workload of the second node was generated via: ping 192.168.4.51 The first node was running: while true; do /host/batctl/batctl if del testgre; /host/batctl/batctl if add testgre; done Later (when the invalid memory access happened) it was switched to while true; do /host/batctl/batctl if del eth0; /host/batctl/batctl if add eth0; done The output on the first node was: batman_adv: bat0: Interface deactivated: eth0 batman_adv: bat0: Removing interface: eth0 ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy+0x1d/0x40 at addr ffff880007e1e680 Read of size 8 by task batctl/1422 ============================================================================= BUG kmalloc-16 (Tainted: G O ): kasan: bad access detected ----------------------------------------------------------------------------- Disabling lock debugging due to kernel taint INFO: Allocated in batadv_iv_ogm_orig_add_if+0x68/0x1bf [batman_adv] age=7876 cpu=0 pid=1417 ___slab_alloc.constprop.28+0x36f/0x3a0 __slab_alloc.constprop.27+0x40/0x90 __kmalloc+0x190/0x1d0 batadv_iv_ogm_orig_add_if+0x68/0x1bf [batman_adv] batadv_orig_hash_add_if+0x1db/0x31e [batman_adv] batadv_hardif_enable_interface+0x301/0x812 [batman_adv] batadv_store_mesh_iface+0x1d8/0x206 [batman_adv] kobj_attr_store+0x36/0x70 sysfs_kf_write+0x110/0x180 kernfs_fop_write+0x270/0x390 __vfs_write+0xea/0x400 vfs_write+0x13d/0x480 SyS_write+0x11b/0x250 entry_SYSCALL_64_fastpath+0x12/0x72 INFO: Freed in batadv_iv_ogm_orig_del_if+0x103/0x2b1 [batman_adv] age=7904 cpu=0 pid=1410 __slab_free+0x310/0x440 kfree+0x19b/0x1b0 batadv_iv_ogm_orig_del_if+0x103/0x2b1 [batman_adv] batadv_orig_hash_del_if+0x227/0x5a1 [batman_adv] batadv_hardif_disable_interface+0x16d/0x58e [batman_adv] batadv_store_mesh_iface+0x18d/0x206 [batman_adv] kobj_attr_store+0x36/0x70 sysfs_kf_write+0x110/0x180 kernfs_fop_write+0x270/0x390 __vfs_write+0xea/0x400 vfs_write+0x13d/0x480 SyS_write+0x11b/0x250 entry_SYSCALL_64_fastpath+0x12/0x72 INFO: Slab 0xffffea00001f8780 objects=12 used=6 fp=0xffff880007e1ea00 flags=0x4000000000000080 INFO: Object 0xffff880007e1e640 @offset=1600 fp=0x (null) Bytes b4 ffff880007e1e630: 00 00 00 00 88 05 00 00 83 2b 01 00 01 00 00 00 .........+...... Object ffff880007e1e640: 00 00 00 00 00 00 00 00 ff ff ff 7f 00 00 00 00 ................ CPU: 1 PID: 1422 Comm: batctl Tainted: G B O 4.4.0-rc2-next-20151127 #20 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 ffff880007e1e640 00000000beca4caa ffff88000aed7948 ffffffff815fc597 ffff88000c803c00 ffff88000aed7978 ffffffff812e2204 ffff88000c803c00 ffffea00001f8780 ffff880007e1e640 ffff88000b91d850 ffff88000aed79a0 Call Trace: [<ffffffff815fc597>] dump_stack+0x4b/0x64 [<ffffffff812e2204>] print_trailer+0xf4/0x150 [<ffffffff812e6d5f>] object_err+0x2f/0x40 [<ffffffff812e88db>] kasan_report_error+0x22b/0x550 [<ffffffff812e4c1d>] ? __slab_alloc.constprop.27+0x4d/0x90 [<ffffffffa00005be>] ? batadv_iv_ogm_orig_del_if+0x67/0x2b1 [batman_adv] [<ffffffff812e9173>] kasan_report+0x53/0x60 [<ffffffff812e815d>] ? memcpy+0x1d/0x40 [<ffffffff812e7c1a>] __asan_loadN+0x12a/0x180 [<ffffffff812e815d>] memcpy+0x1d/0x40 [<ffffffffa000064e>] batadv_iv_ogm_orig_del_if+0xf7/0x2b1 [batman_adv] [<ffffffffa0000557>] ? batadv_iv_ogm_orig_add_if+0x1bf/0x1bf [batman_adv] [<ffffffffa002af5c>] batadv_orig_hash_del_if+0x227/0x5a1 [batman_adv] [<ffffffffa002ae69>] ? batadv_orig_hash_del_if+0x134/0x5a1 [batman_adv] [<ffffffffa001d20a>] batadv_hardif_disable_interface+0x16d/0x58e [batman_adv] [<ffffffffa0038108>] batadv_store_mesh_iface+0x18d/0x206 [batman_adv] [<ffffffff81601400>] ? kobj_attr_show+0x60/0x60 [<ffffffff81601436>] kobj_attr_store+0x36/0x70 [<ffffffff8140c3e3>] ? sysfs_file_ops+0x113/0x170 [<ffffffff8140c550>] sysfs_kf_write+0x110/0x180 [<ffffffff8140c440>] ? sysfs_file_ops+0x170/0x170 [<ffffffff81409ee0>] kernfs_fop_write+0x270/0x390 [<ffffffff812f328a>] __vfs_write+0xea/0x400 [<ffffffff812f31a0>] ? __vfs_read+0x3f0/0x3f0 [<ffffffff811a5ed3>] ? rcu_read_lock_sched_held+0xe3/0x120 [<ffffffff811a6480>] ? rcu_sync_lockdep_assert+0x70/0xb0 [<ffffffff81163ffd>] ? update_fast_ctr+0x1d/0xa0 [<ffffffff811640f2>] ? percpu_down_read+0x52/0x90 [<ffffffff812fc15f>] ? __sb_start_write+0xaf/0xf0 [<ffffffff812f46ed>] vfs_write+0x13d/0x480 [<ffffffff81343c1e>] ? __fget_light+0x13e/0x1f0 [<ffffffff812f6e3b>] SyS_write+0x11b/0x250 [<ffffffff812f6d20>] ? SyS_read+0x250/0x250 [<ffffffff810020e4>] ? lockdep_sys_exit_thunk+0x12/0x14 [<ffffffff81d938f2>] entry_SYSCALL_64_fastpath+0x12/0x72 Memory state around the buggy address: ffff880007e1e580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff880007e1e600: fc fc fc fc fc fc fc fc 00 00 fc fc fc fc fc fc >ffff880007e1e680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff880007e1e700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff880007e1e780: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy+0x1d/0x40 at addr ffff880007e1e540 Read of size 8 by task batctl/1422 ============================================================================= BUG kmalloc-16 (Tainted: G B O ): kasan: bad access detected ----------------------------------------------------------------------------- INFO: Allocated in batadv_iv_ogm_orig_add_if+0x68/0x1bf [batman_adv] age=7900 cpu=0 pid=1417 ___slab_alloc.constprop.28+0x36f/0x3a0 __slab_alloc.constprop.27+0x40/0x90 __kmalloc+0x190/0x1d0 batadv_iv_ogm_orig_add_if+0x68/0x1bf [batman_adv] batadv_orig_hash_add_if+0x1db/0x31e [batman_adv] batadv_hardif_enable_interface+0x301/0x812 [batman_adv] batadv_store_mesh_iface+0x1d8/0x206 [batman_adv] kobj_attr_store+0x36/0x70 sysfs_kf_write+0x110/0x180 kernfs_fop_write+0x270/0x390 __vfs_write+0xea/0x400 vfs_write+0x13d/0x480 SyS_write+0x11b/0x250 entry_SYSCALL_64_fastpath+0x12/0x72 INFO: Freed in batadv_iv_ogm_orig_del_if+0x103/0x2b1 [batman_adv] age=7905 cpu=0 pid=1416 __slab_free+0x310/0x440 kfree+0x19b/0x1b0 batadv_iv_ogm_orig_del_if+0x103/0x2b1 [batman_adv] batadv_orig_hash_del_if+0x227/0x5a1 [batman_adv] batadv_hardif_disable_interface+0x16d/0x58e [batman_adv] batadv_store_mesh_iface+0x18d/0x206 [batman_adv] kobj_attr_store+0x36/0x70 sysfs_kf_write+0x110/0x180 kernfs_fop_write+0x270/0x390 __vfs_write+0xea/0x400 vfs_write+0x13d/0x480 SyS_write+0x11b/0x250 entry_SYSCALL_64_fastpath+0x12/0x72 INFO: Slab 0xffffea00001f8780 objects=12 used=5 fp=0xffff880007e1e640 flags=0x4000000000000080 INFO: Object 0xffff880007e1e500 @offset=1280 fp=0xffffffffffffffff Bytes b4 ffff880007e1e4f0: 00 00 00 00 89 05 00 00 85 2b 01 00 01 00 00 00 .........+...... Object ffff880007e1e500: ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 ................ CPU: 1 PID: 1422 Comm: batctl Tainted: G B O 4.4.0-rc2-next-20151127 #20 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 ffff880007e1e500 00000000beca4caa ffff88000aed7948 ffffffff815fc597 ffff88000c803c00 ffff88000aed7978 ffffffff812e2204 ffff88000c803c00 ffffea00001f8780 ffff880007e1e500 ffff88000ad885a0 ffff88000aed79a0 Call Trace: [<ffffffff815fc597>] dump_stack+0x4b/0x64 [<ffffffff812e2204>] print_trailer+0xf4/0x150 [<ffffffff812e6d5f>] object_err+0x2f/0x40 [<ffffffff812e88db>] kasan_report_error+0x22b/0x550 [<ffffffff812e9173>] kasan_report+0x53/0x60 [<ffffffff812e815d>] ? memcpy+0x1d/0x40 [<ffffffff812e7c1a>] __asan_loadN+0x12a/0x180 [<ffffffff812e815d>] memcpy+0x1d/0x40 [<ffffffffa000064e>] batadv_iv_ogm_orig_del_if+0xf7/0x2b1 [batman_adv] [<ffffffffa0000557>] ? batadv_iv_ogm_orig_add_if+0x1bf/0x1bf [batman_adv] [<ffffffffa002af5c>] batadv_orig_hash_del_if+0x227/0x5a1 [batman_adv] [<ffffffffa002ae69>] ? batadv_orig_hash_del_if+0x134/0x5a1 [batman_adv] [<ffffffffa001d20a>] batadv_hardif_disable_interface+0x16d/0x58e [batman_adv] [<ffffffffa0038108>] batadv_store_mesh_iface+0x18d/0x206 [batman_adv] [<ffffffff81601400>] ? kobj_attr_show+0x60/0x60 [<ffffffff81601436>] kobj_attr_store+0x36/0x70 [<ffffffff8140c3e3>] ? sysfs_file_ops+0x113/0x170 [<ffffffff8140c550>] sysfs_kf_write+0x110/0x180 [<ffffffff8140c440>] ? sysfs_file_ops+0x170/0x170 [<ffffffff81409ee0>] kernfs_fop_write+0x270/0x390 [<ffffffff812f328a>] __vfs_write+0xea/0x400 [<ffffffff812f31a0>] ? __vfs_read+0x3f0/0x3f0 [<ffffffff811a5ed3>] ? rcu_read_lock_sched_held+0xe3/0x120 [<ffffffff811a6480>] ? rcu_sync_lockdep_assert+0x70/0xb0 [<ffffffff81163ffd>] ? update_fast_ctr+0x1d/0xa0 [<ffffffff811640f2>] ? percpu_down_read+0x52/0x90 [<ffffffff812fc15f>] ? __sb_start_write+0xaf/0xf0 [<ffffffff812f46ed>] vfs_write+0x13d/0x480 [<ffffffff81343c1e>] ? __fget_light+0x13e/0x1f0 [<ffffffff812f6e3b>] SyS_write+0x11b/0x250 [<ffffffff812f6d20>] ? SyS_read+0x250/0x250 [<ffffffff810020e4>] ? lockdep_sys_exit_thunk+0x12/0x14 [<ffffffff81d938f2>] entry_SYSCALL_64_fastpath+0x12/0x72 Memory state around the buggy address: ffff880007e1e400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff880007e1e480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff880007e1e500: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff880007e1e580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff880007e1e600: fc fc fc fc fc fc fc fc fb fb fc fc fc fc fc fc ================================================================== batman_adv: bat0: Adding interface: eth0 [...] ================================================================== BUG: KASAN: slab-out-of-bounds in batadv_iv_ogm_slide_own_bcast_window+0x298/0x376 [batman_adv] at addr fff Write of size 1 by task kworker/u4:2/67 ============================================================================= BUG kmalloc-8 (Tainted: G B O ): kasan: bad access detected ----------------------------------------------------------------------------- INFO: Allocated in batadv_iv_ogm_orig_del_if+0x1bc/0x392 [batman_adv] age=307 cpu=1 pid=399 ___slab_alloc.constprop.28+0x36f/0x3a0 __slab_alloc.constprop.27+0x40/0x90 __kmalloc+0x190/0x1d0 batadv_iv_ogm_orig_del_if+0x1bc/0x392 [batman_adv] batadv_orig_hash_del_if+0x227/0x5a1 [batman_adv] batadv_hardif_disable_interface+0x16d/0x58e [batman_adv] batadv_softif_slave_del+0x55/0x8b [batman_adv] do_setlink+0x9b8/0x2900 rtnl_newlink+0xb05/0x1260 rtnetlink_rcv_msg+0x241/0x680 netlink_rcv_skb+0x236/0x340 rtnetlink_rcv+0x25/0x30 netlink_unicast+0x3f6/0x580 netlink_sendmsg+0x89e/0xb30 sock_sendmsg+0x70/0xc0 ___sys_sendmsg+0x583/0x670 INFO: Freed in batadv_iv_ogm_orig_add_if+0x1dd/0x22b [batman_adv] age=513 cpu=1 pid=398 __slab_free+0x310/0x440 kfree+0x19b/0x1b0 batadv_iv_ogm_orig_add_if+0x1dd/0x22b [batman_adv] batadv_orig_hash_add_if+0x1db/0x31e [batman_adv] batadv_hardif_enable_interface+0x301/0x812 [batman_adv] batadv_softif_slave_add+0x54/0x87 [batman_adv] do_setlink+0x1bbd/0x2900 rtnl_newlink+0xb05/0x1260 rtnetlink_rcv_msg+0x241/0x680 netlink_rcv_skb+0x236/0x340 rtnetlink_rcv+0x25/0x30 netlink_unicast+0x3f6/0x580 netlink_sendmsg+0x89e/0xb30 sock_sendmsg+0x70/0xc0 ___sys_sendmsg+0x583/0x670 __sys_sendmsg+0xcd/0x160 INFO: Slab 0xffffea0000007200 objects=13 used=11 fp=0xffff8800001c8af8 flags=0x0080 INFO: Object 0xffff8800001c83a8 @offset=936 fp=0xffff8800001c8429 Bytes b4 ffff8800001c8398: 01 00 00 00 8b 01 00 00 85 f2 fe ff 00 00 00 00 ................ Object ffff8800001c83a8: 29 84 1c 00 00 88 ff ff )....... CPU: 0 PID: 67 Comm: kworker/u4:2 Tainted: G B O 4.4.0-rc2-next-20151127 #20 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 Workqueue: bat_events batadv_send_outstanding_bat_ogm_packet [batman_adv] ffff8800001c83a8 00000000fce739f9 ffff88000bb97990 ffffffff815fc597 ffff88000c802200 ffff88000bb979c0 ffffffff812e2204 ffff88000c802200 ffffea0000007200 ffff8800001c83a8 0000000000000026 ffff88000bb979e8 Call Trace: [<ffffffff815fc597>] dump_stack+0x4b/0x64 [<ffffffff812e2204>] print_trailer+0xf4/0x150 [<ffffffff812e6d5f>] object_err+0x2f/0x40 [<ffffffff812e88db>] kasan_report_error+0x22b/0x550 [<ffffffff812e8e8c>] __asan_report_store1_noabort+0x5c/0x70 [<ffffffffa0007401>] ? _GLOBAL__sub_I_65535_1_batadv_ring_buffer_set+0x13/0x17 [batman_adv] [<ffffffffa00036a1>] ? batadv_iv_ogm_slide_own_bcast_window+0x298/0x376 [batman_adv] [<ffffffffa00036a1>] batadv_iv_ogm_slide_own_bcast_window+0x298/0x376 [batman_adv] [<ffffffffa0003510>] ? batadv_iv_ogm_slide_own_bcast_window+0x107/0x376 [batman_adv] [<ffffffffa0003a84>] batadv_iv_ogm_schedule+0x305/0x608 [batman_adv] [<ffffffffa00037d2>] ? batadv_iv_ogm_schedule+0x53/0x608 [batman_adv] [<ffffffffa0032dfe>] batadv_schedule_bat_ogm+0xc8/0xcf [batman_adv] [<ffffffffa0033c33>] batadv_send_outstanding_bat_ogm_packet+0x25f/0x2ac [batman_adv] [<ffffffff810edb04>] process_one_work+0x674/0x1090 [<ffffffff810eda87>] ? process_one_work+0x5f7/0x1090 [<ffffffff8116de0d>] ? trace_hardirqs_on+0xd/0x10 [<ffffffff810ed490>] ? cancel_delayed_work_sync+0x10/0x10 [<ffffffff810ee5f2>] worker_thread+0xd2/0xdf0 [<ffffffff810ee520>] ? process_one_work+0x1090/0x1090 [<ffffffff810fdfee>] kthread+0x21e/0x2e0 [<ffffffff810fddd0>] ? kthread_create_on_node+0x400/0x400 [<ffffffff81109639>] ? finish_task_switch+0x1c9/0x5b0 [<ffffffff810fddd0>] ? kthread_create_on_node+0x400/0x400 [<ffffffff81d93c5f>] ret_from_fork+0x3f/0x70 [<ffffffff810fddd0>] ? kthread_create_on_node+0x400/0x400 Memory state around the buggy address: ffff8800001c8280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8800001c8300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8800001c8380: fc fc fc fc fc 01 fc fc fc fc fc fc fc fc fc fc ^ ffff8800001c8400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8800001c8480: fc fc fc fc fc fc fc fc fc fc fc fc 01 fc fc fc ================================================================== This was repeated without rebooting the node and caused following error: batman_adv: bat0: Removing interface: eth0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN Modules linked in: batman_adv(O) CPU: 0 PID: 2033 Comm: batctl Tainted: G B O 4.4.0-rc2-next-20151127 #20 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 task: ffff88000bb6c5c0 ti: ffff880007df0000 task.ti: ffff880007df0000 RIP: 0010:[<ffffffffa0033e65>] [<ffffffffa0033e65>] batadv_purge_outstanding_packets+0x332/0x36a [batman_adv] RSP: 0018:ffff880007df7b38 EFLAGS: 00010a02 RAX: 1bd5a00000000020 RBX: dead000000000100 RCX: 0000000000000014 RDX: 0000000000000004 RSI: 0000000000000000 RDI: ffff88000ac48100 RBP: ffff880007df7b78 R08: ffffffffa0000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88000bb72fd0 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88000ac49650 FS: 00007fa3b4a3a700(0000) GS:ffff88000ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000040369f CR3: 000000000aec6000 CR4: 00000000000006b0 Stack: ffff88000ba02980 ffff88000ba02aa8 ffff88000ba02ac0 ffff88000bb72fd0 ffff88000ba02980 ffff88000bb73040 ffff88000ae77c90 ffff88000ba02140 ffff880007df7be0 ffffffffa001d4a4 ffffffffa001d211 ffffffffa005a940 Call Trace: [<ffffffffa001d4a4>] batadv_hardif_disable_interface+0x407/0x58e [batman_adv] [<ffffffffa001d211>] ? batadv_hardif_disable_interface+0x174/0x58e [batman_adv] [<ffffffffa0038108>] batadv_store_mesh_iface+0x18d/0x206 [batman_adv] [<ffffffff81601400>] ? kobj_attr_show+0x60/0x60 [<ffffffff81601436>] kobj_attr_store+0x36/0x70 [<ffffffff8140c550>] sysfs_kf_write+0x110/0x180 [<ffffffff8140c440>] ? sysfs_file_ops+0x170/0x170 [<ffffffff81409ee0>] kernfs_fop_write+0x270/0x390 [<ffffffff812f328a>] __vfs_write+0xea/0x400 [<ffffffff812f31a0>] ? __vfs_read+0x3f0/0x3f0 [<ffffffff812e5957>] ? __slab_free+0x397/0x440 [<ffffffff812fc15f>] ? __sb_start_write+0xaf/0xf0 [<ffffffff811a641d>] ? rcu_sync_lockdep_assert+0xd/0xb0 [<ffffffff81163ffd>] ? update_fast_ctr+0x1d/0xa0 [<ffffffff811640f2>] ? percpu_down_read+0x52/0x90 [<ffffffff812fc15f>] ? __sb_start_write+0xaf/0xf0 [<ffffffff812f46ed>] vfs_write+0x13d/0x480 [<ffffffff81343c1e>] ? __fget_light+0x13e/0x1f0 [<ffffffff812f6e3b>] SyS_write+0x11b/0x250 [<ffffffff812f6d20>] ? SyS_read+0x250/0x250 [<ffffffff810020e4>] ? lockdep_sys_exit_thunk+0x12/0x14 [<ffffffff81d938f2>] entry_SYSCALL_64_fastpath+0x12/0x72 Code: 00 ad de 48 89 03 48 b8 00 02 00 00 00 00 ad de 48 89 43 08 48 89 df e8 62 ee ff ff 4d 85 f6 74 2a 4c 89 f3 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 dc 4e 2b e1 4c 8b 33 4d 85 e4 RIP [<ffffffffa0033e65>] batadv_purge_outstanding_packets+0x332/0x36a [batman_adv] RSP <ffff880007df7b38> ---[ end trace 761c71262b1ed40c ]--- Kernel panic - not syncing: Fatal exception in interrupt Kernel Offset: disabled It also happened when using the rtnetlink interface instead of batctl/sysfs: while true; do ip link set nomaster dev eth0; ip link set master bat0 dev eth0; done Kind regards, Sven [1] https://www.open-mesh.org/projects/open-mesh/wiki/Emulation_Debug/7 + CONFIG_NET_IPGRE_DEMUX=y + CONFIG_NET_IP_TUNNEL=y + CONFIG_NET_IPGRE=y

1 1

Re: [B.A.T.M.A.N.] batman-adv licence
by Marek Lindner 23 Nov '15

23 Nov '15

Hi Johannes, in the future, please contact our official mailing list instead of mailing me directly. > I am looking for a mesh solution for research purposes in an university. > Can you tell me which licence the B.A.T.M.A.N. project uses, please? > I didn't find a hint to that information on the open-mesh website. As every kernel module batman-adv is licensed under the GPLv2. Each source file also contains information about the license. Cheers, Marek

1 0

[B.A.T.M.A.N.] [PATCH] batman-adv: Add missing forward declaration for net_device
by Sven Eckelmann 22 Nov '15

22 Nov '15

A new function batadv_bla_status_update was introduced which uses the not yet defined struct net_device as parameter. Add the forward declaration to avoid compiler warnings about type declarations inside parameter list. Fixes: 07ed3c31d795 ("batman-adv: purge bridge loop avoidance when its disabled") Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- net/batman-adv/bridge_loop_avoidance.h | 1 + 1 file changed, 1 insertion(+) diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h index db1aeb5..7ea199b 100644 --- a/net/batman-adv/bridge_loop_avoidance.h +++ b/net/batman-adv/bridge_loop_avoidance.h @@ -22,6 +22,7 @@ #include <linux/types.h> +struct net_device; struct seq_file; struct sk_buff; -- 2.6.2

2 1

[B.A.T.M.A.N.] [PATCH 0/2] batman-adv: Deletion of some unnecessary checks
by SF Markus Elfring 21 Nov '15

21 Nov '15

From: Markus Elfring <elfring(a)users.sourceforge.net> Date: Sun, 15 Nov 2015 09:34:12 +0100 Another update suggestion was taken into account after a patch was applied from static source code analysis. Markus Elfring (2): Delete unnecessary checks before the function call "kfree_skb" Less checks in batadv_tvlv_unicast_send() net/batman-adv/main.c | 15 +++++---------- net/batman-adv/network-coding.c | 4 +--- net/batman-adv/send.c | 3 +-- 3 files changed, 7 insertions(+), 15 deletions(-) -- 2.6.2

2 4

[B.A.T.M.A.N.] [PATCH 0/2] Bridge loop avoidance startup fixes
by Simon Wunderlich 21 Nov '15

21 Nov '15

From: Simon Wunderlich <simon(a)open-mesh.com> When changing configuration on top of batman-adv, for example in firmwares, there are two cases which appeared to be problematic and causing initial temporary loops when starting batman-adv. * when activating batman-adv with vlans and bridges, it may take longer than 30 seconds to start up the bridges. If the grace period is over by that time, the BLA grace period may already be over. Therefore increase the grace period to 60 seconds. * When changing the network configuration, e.g. adding or removing wired interface in a bridge, it may be useful to re-start the grace period. Therefore the bridge loop avoidance state is dropped when BLA is turned off, so turning off/on bla can be used to restart the grace period. These two fixes addressed the problems we had in our setups. The patches are based on top of the current master (since its technically more a feature than a fix), plus the kerneldoc fix sent last week. Cheers, Simon Simon Wunderlich (2): batman-adv: purge bridge loop avoidance when its disabled batman-adv: increase BLA wait periods to 6 net/batman-adv/bridge_loop_avoidance.c | 20 ++++++++++++++++++++ net/batman-adv/bridge_loop_avoidance.h | 1 + net/batman-adv/main.h | 2 +- net/batman-adv/sysfs.c | 4 +++- 4 files changed, 25 insertions(+), 2 deletions(-) -- 2.6.2

2 6

[B.A.T.M.A.N.] [PATCH] batman-adv: only call post function if something changed
by Simon Wunderlich 21 Nov '15

21 Nov '15

From: Simon Wunderlich <simon(a)open-mesh.com> Currently, the post function is also called on errors or if there were no changes, which is redundant for the functions currently using these facilities. Signed-off-by: Simon Wunderlich <simon(a)open-mesh.com> --- net/batman-adv/sysfs.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 6d6df12..f38d7b7 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -243,10 +243,13 @@ ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ static int batadv_store_bool_attr(char *buff, size_t count, struct net_device *net_dev, - const char *attr_name, atomic_t *attr) + const char *attr_name, atomic_t *attr, + bool *changed) { int enabled = -1; + *changed = false; + if (buff[count - 1] == '\n') buff[count - 1] = '\0'; @@ -273,6 +276,8 @@ static int batadv_store_bool_attr(char *buff, size_t count, atomic_read(attr) == 1 ? "enabled" : "disabled", enabled == 1 ? "enabled" : "disabled"); + *changed = true; + atomic_set(attr, (unsigned int)enabled); return count; } @@ -283,11 +288,12 @@ __batadv_store_bool_attr(char *buff, size_t count, struct attribute *attr, atomic_t *attr_store, struct net_device *net_dev) { + bool changed; int ret; ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, - attr_store); - if (post_func && ret) + attr_store, &changed); + if (post_func && changed) post_func(net_dev); return ret; -- 2.6.2

2 1

[B.A.T.M.A.N.] Integrity checks for packets, who does it?
by Patrick Bosch 20 Nov '15

20 Nov '15

Hi everyone I have a little uncertainty regarding integrity checks in batman advanced. I was wondering which encapsulation does it. The situation: - Ping to a batman node - Normal ping, no batman ping (nodes have an IP) - WPA2 active ICMP should be encapsulated by IP, which is encapsulated by the Wi-Fi mac header. Now I know that batman advanced inserts it's own header. The question is, where exactly? Does it encapsulate the Wi-Fi mac and takes over the integrity check or not? Also, how does it behave in the case of enabled encryption? WPA2 has it's own integrity check. The reason I ask, is that in Wireshark, it appears as ICMP when I sniff the traffic without encryption enabled. It would be great, if someone could shed light in this affair! Thank you in advance! Kind regards Patrick -- Patrick Bosch, PhD Student University of Antwerp - iMinds Dept. Mathematics and Computer Science MOSAIC research group Middelheimlaan 1 - Room M.G.215 2020 Antwerpen - Belgium Email: patrick.bosch(a)uantwerpen.be Phone: +3232653858

2 1

[B.A.T.M.A.N.] batctl file errors
by no name 19 Nov '15

19 Nov '15

I am using BATMAN on a raspberry pi b+ with a kernel version of 4.1.13+ but my problem also occured on an older kernel (I tried updating, which did not help). My BATMAN is on batctl debian-2012.1.0-1 [batman-adv: 2015.0]. I try to get the vis_mode up and running, which fails in multiple ways, because I can't even create logs. sudo batctl loglevel -> "Error - can't open file '/sys/class/net/bat0/mesh/log_level': No such file or directory" sudo batctl vm -> "Error - can't open file '/sys/class/net/bat0/mesh/log_level': No such file or directory" and so on. The thing is, when I try: sudo batmand s -> "Not using interface s (retrying later): interface not active" whereas if I try: sudo batmand s IP bat0 -> batman cannot be pinged from any other interface any more did I forget to install something? Thanks Richard

3 2

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

B.A.T.M.A.N