IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
BUG: unable to handle kernel paging request at fffffffffffffffb
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
IP: hfsplus_bnode_put+0x43/0x3e0 fs/hfsplus/bnode.c:629
PGD 8e6b067 P4D 8e6b067 PUD 8e6d067 PMD 0 
IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
CPU: 0 PID: 9402 Comm: syz-executor.5 Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
task: ffff888052ace640 task.stack: ffff888052ad8000
RIP: 0010:hfsplus_bnode_put+0x43/0x3e0 fs/hfsplus/bnode.c:629
RSP: 0018:ffff888052adf2d0 EFLAGS: 00010246
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
RAX: dffffc0000000000 RBX: ffff888052adf408 RCX: ffffc9000629b000
RDX: 1fffffffffffffff RSI: ffffffff81d3b564 RDI: fffffffffffffffb
RBP: fffffffffffffffb R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff888052ace640 R12: ffff8880a94b86cc
R13: 0000000000000073 R14: ffff8880977fb890 R15: ffff888052adf408
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
FS:  00007f03466a6700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffb CR3: 0000000096810000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hfsplus_brec_find+0xb6/0x460 fs/hfsplus/bfind.c:174
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 __hfsplus_ext_read_extent fs/hfsplus/extents.c:164 [inline]
 __hfsplus_ext_cache_extent fs/hfsplus/extents.c:191 [inline]
 hfsplus_ext_read_extent+0x441/0x9e0 fs/hfsplus/extents.c:218
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 hfsplus_file_extend+0x616/0xef0 fs/hfsplus/extents.c:456
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_0
 hfsplus_get_block+0x15b/0x820 fs/hfsplus/extents.c:245
 __block_write_begin_int+0x35c/0x11d0 fs/buffer.c:2038
IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
 __block_write_begin fs/buffer.c:2088 [inline]
 block_write_begin+0x58/0x270 fs/buffer.c:2147
 cont_write_begin+0x4a3/0x740 fs/buffer.c:2497
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
 hfsplus_write_begin+0x87/0x130 fs/hfsplus/inode.c:53
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
 cont_expand_zero fs/buffer.c:2424 [inline]
 cont_write_begin+0x296/0x740 fs/buffer.c:2487
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
 hfsplus_write_begin+0x87/0x130 fs/hfsplus/inode.c:53
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
 generic_perform_write+0x1d5/0x430 mm/filemap.c:3055
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
 generic_file_write_iter+0x36f/0x650 mm/filemap.c:3208
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1
 call_write_iter include/linux/fs.h:1780 [inline]
 aio_write+0x2ed/0x560 fs/aio.c:1553
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newclient_loop: send disconnect: Broken pipe