batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6884 at drivers/net/ipvlan/ipvlan_main.c:65 ipvlan_unregister_nf_hook.cold+0x11/0x25 drivers/net/ipvlan/ipvlan_main.c:65 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6884 Comm: syz-executor.0 Not tainted 4.19.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x61 kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:ipvlan_unregister_nf_hook.cold+0x11/0x25 drivers/net/ipvlan/ipvlan_main.c:65 Code: 03 46 fd e9 1b ff ff ff 48 89 df e8 fe 05 46 fd eb b9 e8 27 03 46 fd eb 83 e8 c0 e5 0f fd 48 c7 c7 60 b4 f4 87 e8 63 f3 fa fc <0f> 0b e9 80 a2 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 53 48 RSP: 0018:ffff88809dda6ff8 EFLAGS: 00010286 RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8154cf01 RDI: ffffed1013bb4df1 RBP: ffff8880a0384040 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a423ad00 R13: ffff888086e59200 R14: 0000000000000000 R15: 0000000000000001 ipvlan_set_port_mode+0x53a/0x650 drivers/net/ipvlan/ipvlan_main.c:106 ipvlan_link_new+0x68d/0xc40 drivers/net/ipvlan/ipvlan_main.c:676 rtnl_newlink+0x1027/0x15a0 net/core/rtnetlink.c:3141 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4777 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c429 Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff6ba33dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002c0c0 RCX: 000000000045c429 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007fffaee58aef R14: 00007ff6ba33e9c0 R15: 000000000078bf0c Kernel Offset: disabled Rebooting in 86400 seconds..