INFO: rcu_preempt self-detected stall on CPU
1-...: (1 GPs behind) idle=aa2/140000000000002/0 softirq=78117/78123 fqs=32
(t=10500 jiffies g=23567 c=23566 q=354)
NMI backtrace for cpu 1
CPU: 1 PID: 31660 Comm: syz-executor.0 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x13e/0x194 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x139/0x17e lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x490/0xdaa kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:veth_xmit+0xb1/0x300 drivers/net/veth.c:108
RSP: 0018:ffff8880aeb07a20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff8880650e65c0 RCX: 1ffffffff0f417ad
RDX: 1ffff1100ca1ce10 RSI: ffffffff86e453c0 RDI: ffff8880650e7080
RBP: ffff888060eafdc0 R08: 0000000000000000 R09: 0000000000022012
R10: ffff8880587e2b88 R11: ffff8880587e2240 R12: 0000000000000042
R13: ffff8880650e65c0 R14: ffff8880a0419780 R15: ffffffff870a8180
__netdev_start_xmit include/linux/netdevice.h:4039 [inline]
netdev_start_xmit include/linux/netdevice.h:4048 [inline]
xmit_one net/core/dev.c:3009 [inline]
dev_hard_start_xmit+0x186/0x890 net/core/dev.c:3025
__dev_queue_xmit+0x1d91/0x25c0 net/core/dev.c:3525
hsr_xmit net/hsr/hsr_forward.c:237 [inline]
hsr_forward_do net/hsr/hsr_forward.c:295 [inline]
hsr_forward_skb+0xb9a/0x18ed net/hsr/hsr_forward.c:373
send_hsr_supervision_frame+0x8ec/0xf40 net/hsr/hsr_device.c:321
hsr_announce+0xf0/0x330 net/hsr/hsr_device.c:350
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
__do_softirq+0x254/0x9bf kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x15b/0x1a0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:3997
RSP: 0018:ffff8882165e7a90 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2ce1 RBX: ffff8880587e2240 RCX: 00000000fe769c57
RDX: dffffc0000000000 RSI: ffff8880587e2ae8 RDI: 0000000000000286
RBP: ffff8880583e12c8 R08: 0000000000004dc0 R09: ffffffff8a0826c0
R10: ffff8880587e2ae8 R11: ffff8880587e2240 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
fasync_remove_entry+0x22/0x1e0 fs/fcntl.c:861
fasync_helper+0x95/0xa2 fs/fcntl.c:970
perf_fasync+0x7e/0xb0 kernel/events/core.c:5529
__fput+0x5ab/0x790 fs/file_table.c:206
task_work_run+0x113/0x190 kernel/task_work.c:113
get_signal+0x187f/0x1ca0 kernel/signal.c:2229
do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f27214a4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffdff RBX: 00007f27214a56d4 RCX: 000000000045c479
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000030020100
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000074 R14: 00000000004c2d06 R15: 000000000076bf2c
INFO: rcu_sched detected stalls on CPUs/tasks:
1-...: (1 GPs behind) idle=aa2/140000000000002/0 softirq=78120/78123 fqs=33
(detected by 0, t=10551 jiffies, g=18079, c=18078, q=9)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 31660 Comm: syz-executor.0 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880587e2240 task.stack: ffff8882165e0000
RIP: 0010:debug_lockdep_rcu_enabled+0x34/0x90 kernel/rcu/update.c:299
RSP: 0018:ffff8880aeb07480 EFLAGS: 00000002
RAX: 0000000000000007 RBX: 1ffff11015d60e95 RCX: 1ffffffff1124460
RDX: 0000000000000002 RSI: 0000000000000001 RDI: ffff8880587e2abc
RBP: ffffffff87d843e0 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8880587e2b88 R11: ffff8880587e2240 R12: ffffffff818f239d
R13: ffff8880587e2240 R14: 0000000000000001 R15: 0000000000000086
FS: 00007f27214a5700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d62a000 CR3: 0000000057008000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x5a6/0x7f0 kernel/locking/lockdep.c:4012
rcu_lock_release include/linux/rcupdate.h:247 [inline]
rcu_read_unlock include/linux/rcupdate.h:685 [inline]
kill_fasync fs/fcntl.c:1012 [inline]
kill_fasync+0x284/0x3c0 fs/fcntl.c:1004
perf_event_wakeup+0x20c/0x350 kernel/events/core.c:5569
perf_pending_event+0xa5/0xd0 kernel/events/core.c:5593
irq_work_run_list+0xf0/0x160 kernel/irq_work.c:156
irq_work_run+0x4e/0xb0 kernel/irq_work.c:171
smp_irq_work_interrupt+0xa3/0x4e0 arch/x86/kernel/irq_work.c:21
irq_work_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:823
RIP: 0010:unwind_next_frame+0x9f3/0x17a0 arch/x86/kernel/unwind_orc.c:425
RSP: 0018:ffff8880aeb076c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff09
RAX: ffff8880aeb07b78 RBX: ffff8880aeb07770 RCX: 0000000000000001
RDX: ffff8880aeb077b8 RSI: 0000000000000001 RDI: ffff8880aeb07770
RBP: 1ffff11015d60edf R08: ffffffff894157c2 R09: ffff8880aeb07b68
R10: ffff8880aeb077a5 R11: 0000000000058071 R12: ffffffff894157be
R13: ffff8880aeb077a8 R14: ffff8880aeb077b8 R15: 0000000000000002
__save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
save_stack+0x32/0xa0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc mm/slab.c:3390 [inline]
kmem_cache_alloc_trace+0x137/0x7b0 mm/slab.c:3616
kmalloc include/linux/slab.h:488 [inline]
dst_cow_metrics_generic+0x48/0x130 net/core/dst.c:210
ipv6_cow_metrics+0x70/0x180 net/ipv6/route.c:196
dst_metrics_write_ptr include/net/dst.h:146 [inline]
dst_metric_set include/net/dst.h:207 [inline]
icmp6_dst_alloc+0x3f6/0x580 net/ipv6/route.c:1780
ndisc_send_skb+0xc0f/0x11e0 net/ipv6/ndisc.c:463
ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3757
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
__do_softirq+0x254/0x9bf kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x15b/0x1a0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:3997
RSP: 0018:ffff8882165e7a90 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2ce1 RBX: ffff8880587e2240 RCX: 00000000fe769c57
RDX: dffffc0000000000 RSI: ffff8880587e2ae8 RDI: 0000000000000286
RBP: ffff8880583e12c8 R08: 0000000000004dc0 R09: ffffffff8a0826c0
R10: ffff8880587e2ae8 R11: ffff8880587e2240 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
fasync_remove_entry+0x22/0x1e0 fs/fcntl.c:861
fasync_helper+0x95/0xa2 fs/fcntl.c:970
perf_fasync+0x7e/0xb0 kernel/events/core.c:5529
__fput+0x5ab/0x790 fs/file_table.c:206
task_work_run+0x113/0x190 kernel/task_work.c:113
get_signal+0x187f/0x1ca0 kernel/signal.c:2229
do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f27214a4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: fffffffffffffdff RBX: 00007f27214a56d4 RCX: 000000000045c479
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000030020100
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000074 R14: 00000000004c2d06 R15: 000000000076bf2c
Code: 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 04 84 d2 75 46 8b 15 54 30 47 07 85 d2 74 39 <48> c7 c0 a0 cb 13 88 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83
loop_reread_partitions: partition scan of loop0 () failed (rc=-13)
batman_adv: batadv0: Interface deactivated: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_0
batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device veth1_macvtap left promiscuous mode
device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
bond4 (unregistering): Releasing backup interface veth11
bond4 (unregistering): Released all slaves
bond3 (unregistering): Releasing backup interface veth9
bond3 (unregistering): Released all slaves
bond2 (unregistering): Releasing backup interface veth7
bond2 (unregistering): Released all slaves
bond1 (unregistering): Releasing backup interface veth5
bond1 (unregistering): Releasing backup interface veth3
bond1 (unregistering): Released all slaves
device hsr_slave_1 left promiscuous mode
device hsr_slave_0 left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): Releasing backup interface bond_slave_1
bond0 (unregistering): Releasing backup interface bond_slave_0
bond0 (unregistering): Released all slaves
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
chnl_net:caif_netlink_parms(): no params data found
IPVS: ftp: loaded support on port[0] = 21
chnl_net:caif_netlink_parms(): no params data found
IPVS: ftp: loaded support on port[0] = 21
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_0 entered promiscuous mode
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_1 entered promiscuous mode
chnl_net:caif_netlink_parms(): no params data found
IPVS: ftp: loaded support on port[0] = 21
bond0: Enslaving bond_slave_0 as an active interface with an up link
bond0: Enslaving bond_slave_1 as an active interface with an up link
IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
team0: Port device team_slave_0 added
IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
team0: Port device team_slave_1 added
batman_adv: batadv0: Adding interface: batadv_slave_0
batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_0 entered promiscuous mode
batman_adv: batadv0: Adding interface: batadv_slave_1
batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
bond0: Enslaving bond_slave_0 as an active interface with an up link
device hsr_slave_0 entered promiscuous mode
device hsr_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready
chnl_net:caif_netlink_parms(): no params data found
bond0: Enslaving bond_slave_1 as an active interface with an up link
IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_0 entered promiscuous mode
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
team0: Port device team_slave_0 added
IPVS: ftp: loaded support on port[0] = 21
IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
team0: Port device team_slave_1 added
bond0: Enslaving bond_slave_0 as an active interface with an up link
batman_adv: batadv0: Adding interface: batadv_slave_0
batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
bond0: Enslaving bond_slave_1 as an active interface with an up link
batman_adv: batadv0: Adding interface: batadv_slave_1
batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
team0: Port device team_slave_0 added
chnl_net:caif_netlink_parms(): no params data found
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
team0: Port device team_slave_1 added
device hsr_slave_0 entered promiscuous mode
device hsr_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready
batman_adv: batadv0: Adding interface: batadv_slave_0
batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready
batman_adv: batadv0: Adding interface: batadv_slave_1
batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_0 entered promiscuous mode
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_1 entered promiscuous mode
device hsr_slave_0 entered promiscuous mode
device hsr_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
bond0: Enslaving bond_slave_0 as an active interface with an up link
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered disabled state
device bridge_slave_0 entered promiscuous mode
chnl_net:caif_netlink_parms(): no params data found
bond0: Enslaving bond_slave_1 as an active interface with an up link
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
team0: Port device team_slave_0 added
bond0: Enslaving bond_slave_0 as an active interface with an up link
IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
team0: Port device team_slave_1 added
bond0: Enslaving bond_slave_1 as an active interface with an up link
batman_adv: batadv0: Adding interface: batadv_slave_0
batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active