batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
CPU: 0 PID: 7715 Comm: kworker/u5:1 Not tainted 4.19.136-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci1 hci_rx_work
RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 net/bluetooth/hci_event.c:4682
Code: 48 c1 ea 03 80 3c 02 00 0f 85 60 05 00 00 48 8b 9d 28 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 23 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffff88805446fa78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f
RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010
RBP: ffff888052cb6a80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888052c9d400 R14: 00000000000000c8 R15: ffff888052c9c4d0
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000b90004 CR3: 0000000058777000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hci_event_packet+0x1973/0x858f net/bluetooth/hci_event.c:5898
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 hci_rx_work+0x46b/0xa90 net/bluetooth/hci_core.c:4359
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 process_one_work+0x864/0x1570 kernel/workqueue.c:2155
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 kthread+0x30b/0x410 kernel/kthread.c:246
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
---[ end trace 71f2039eebddae07 ]---
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 net/bluetooth/hci_event.c:4682
batman_adv: batadv0: Interface activated: batadv_slave_0
Code: 48 c1 ea 03 80 3c 02 00 0f 85 60 05 00 00 48 8b 9d 28 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 23 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffff88805446fa78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f
RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
RBP: ffff888052cb6a80 R08: 0000000000000000 R09: 0000000000000000
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
R13: ffff888052c9d400 R14: 00000000000000c8 R15: ffff888052c9c4d0
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffb3a23f10 CR3: 000000005f4ac000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1