IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
------------[ cut here ]------------
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
no supported rates (0xffffffff) in rate_mask 0x0 with flags 0x0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
WARNING: CPU: 1 PID: 9475 at net/mac80211/rate.c:359 __rate_control_send_low+0x4bb/0x580 net/mac80211/rate.c:359
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9475 Comm: kworker/u4:7 Not tainted 4.19.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy9 ieee80211_scan_work
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
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
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!
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!
 __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
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!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_0
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__rate_control_send_low+0x4bb/0x580 net/mac80211/rate.c:359
Code: 0f 85 d6 00 00 00 48 8b 44 24 18 44 8b 24 a8 e8 4b 61 a9 f9 8b 54 24 24 44 89 e9 44 89 e6 48 c7 c7 a0 fd 66 89 e8 b0 3e 7d f9 <0f> 0b e9 03 fe ff ff e8 29 61 a9 f9 41 83 cd 10 e9 32 fc ff ff e8
RSP: 0018:ffff88809e967680 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880997669a8 RCX: 0000000000000000
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
RDX: 0000000000000000 RSI: ffffffff814fdb21 RDI: ffffed1013d2cec2
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
RBP: ffff88809d7c33e8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffff
R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000000
 rate_control_send_low+0x272/0x610 net/mac80211/rate.c:383
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
 minstrel_ht_get_rate+0x58/0x1510 net/mac80211/rc80211_minstrel_ht.c:1045
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!
 rate_control_get_rate+0x43c/0x520 net/mac80211/rate.c:910
 ieee80211_tx_h_rate_ctrl+0x8b9/0x1450 net/mac80211/tx.c:745
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 invoke_tx_handlers_early+0x84f/0x1f90 net/mac80211/tx.c:1752
 ieee80211_tx+0x283/0x3e0 net/mac80211/tx.c:1896
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
 ieee80211_xmit+0x31d/0x410 net/mac80211/tx.c:1986
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 __ieee80211_tx_skb_tid_band+0x209/0x2b0 net/mac80211/tx.c:4849
 ieee80211_tx_skb_tid_band net/mac80211/ieee80211_i.h:1911 [inline]
 ieee80211_send_scan_probe_req net/mac80211/scan.c:561 [inline]
 ieee80211_scan_state_send_probe+0x3ca/0x8e0 net/mac80211/scan.c:590
 ieee80211_scan_work+0x6f5/0x19b0 net/mac80211/scan.c:1004
 process_one_work+0x864/0x1570 kernel/workqueue.c:2155
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..