IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
audit: type=1400 audit(1590248985.482:12): avc:  denied  { call } for  pid=7709 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=binder permissive=1
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
WARNING: CPU: 1 PID: 7711 at drivers/android/binder.c:2245 binder_transaction_buffer_release+0x2f1/0x990 drivers/android/binder.c:2244
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
Kernel panic - not syncing: panic_on_warn set ...

batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
CPU: 1 PID: 7711 Comm: syz-executor.2 Not tainted 4.19.0-rc3-syzkaller #0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x15a/0x20d lib/dump_stack.c:113
 panic+0x1c6/0x36b kernel/panic.c:184
 __warn.cold.7+0x120/0x168 kernel/panic.c:536
 report_bug+0x1a4/0x200 lib/bug.c:186
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x200/0x350 arch/x86/kernel/traps.c:296
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
RIP: 0010:binder_transaction_buffer_release+0x2f1/0x990 drivers/android/binder.c:2244
batman_adv: batadv0: Interface activated: batadv_slave_0
Code: 48 8b 85 58 ff ff ff 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 4c 8b 78 48 0f 85 1a 05 00 00 4d 3b be 10 05 00 00 0f 85 d4 fe ff ff <0f> 0b 48 83 c3 08 48 39 9d 68 ff ff ff 0f 87 d2 fe ff ff 48 8b 8d
RSP: 0018:ffff88008a537548 EFLAGS: 00010246
RAX: ffff8800a881db00 RBX: ffffc90005aac060 RCX: 0000000000000040
RDX: 1ffff100151cb93a RSI: ffff88008a437b58 RDI: ffff8800a8e5c9d0
RBP: ffff88008a537648 R08: ffffed0015d6473b R09: ffffed0015d6473a
R10: ffffed0015d6473a R11: ffff8800aeb239d3 R12: ffff88008a437b00
R13: dffffc0000000000 R14: ffff8800a8e5c4c0 R15: ffff8800a89ec440
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 binder_transaction+0x10c1/0x5460 drivers/android/binder.c:3240
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:3e) already exists on: batadv_slave_1
 binder_thread_write+0x643/0x1e40 drivers/android/binder.c:3539
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:3e) already exists on: batadv_slave_1
 binder_ioctl_write_read.isra.21+0x195/0x670 drivers/android/binder.c:4576
 binder_ioctl+0x77f/0xee8 drivers/android/binder.c:4716
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:685
batman_adv: batadv0: Interface activated: batadv_slave_1
device veth0_macvtap entered promiscuous mode
 ksys_ioctl+0x62/0x90 fs/ioctl.c:702
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
device veth1_macvtap entered promiscuous mode
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:707
 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45ca29
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5bcc6d3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e1340 RCX: 000000000045ca29
RDX: 0000000020000540 RSI: 00000000c0306201 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000214 R14: 00000000004c458f R15: 00007f5bcc6d46d4
Kernel Offset: disabled
Rebooting in 86400 seconds..