IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
INFO: rcu_preempt self-detected stall on CPU
0-...: (10500 ticks this GP) idle=5da/140000000000002/0 softirq=21342/21342 fqs=0
(t=10500 jiffies g=1571 c=1570 q=963)
rcu_preempt kthread starved for 10500 jiffies! g1571 c1570 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29824 8 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1746
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 7543 Comm: syz-executor476 Not tainted 4.14.171-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+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 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+0x43d/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:165
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:ipv6_get_ifaddr+0x120/0x520 net/ipv6/addrconf.c:1916
RSP: 0018:ffff8880aec07bf0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000001 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000004 RSI: ffffffff87045300 RDI: 0000000000000001
RBP: ffff8880aec07c50 R08: 0000000000000000 R09: ffff888082e18e48
R10: ffff888082e18e28 R11: ffff888082e18580 R12: ffff8880907b18b0
R13: ffff8880aec07cf0 R14: ffff8880934a0100 R15: ffffffff876225a0
ndisc_send_rs+0x17f/0x670 net/ipv6/ndisc.c:646
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3757
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:_raw_spin_lock+0x1/0x40 kernel/locking/spinlock.c:151
RSP: 0018:ffff888098597e80 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: ffff888082e18580 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8880a001a100
RBP: ffff888098597ec8 R08: 0000000300000000 R09: 0000000300000000
R10: 1ffff110130b2ff9 R11: 0000000000000000 R12: ffff8880a001a040
R13: 0000000000000003 R14: ffff8880a001a100 R15: ffff888082e18580
SYSC_close fs/open.c:1180 [inline]
SyS_close+0x46/0xa0 fs/open.c:1178
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x403a80
RSP: 002b:00007fff99e7dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000403a80
RDX: 00000000ffffffff RSI: 000000000000000d RDI: 0000000000000003
RBP: 0000000000045666 R08: 0000000300000000 R09: 0000000300000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000404cb0 R14: 0000000000000000 R15: 0000000000000000
INFO: rcu_sched detected stalls on CPUs/tasks:
0-...: (0 ticks this GP) idle=5da/140000000000000/0 softirq=21343/21343 fqs=0
1-...: (1 GPs behind) idle=a42/140000000000002/0 softirq=13448/13450 fqs=0
(detected by 1, t=0 jiffies, g=1072, c=1071, q=10)
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
NMI backtrace for cpu 1
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
CPU: 1 PID: 7545 Comm: syz-executor476 Not tainted 4.14.171-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+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
device veth1_macvtap entered promiscuous mode
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 kernel/rcu/tree.c:1396
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
print_other_cpu_stall kernel/rcu/tree.c:1485 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x744/0xd0a kernel/rcu/tree.c:2792
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
update_process_times+0x31/0x70 kernel/time/timer.c:1590
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:165
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1287
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0xa0 kernel/rcu/update.c:299
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
RSP: 0018:ffff8880aed070a0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2ce1 RBX: 0000000000000000 RCX: 000000001f88f75a
RDX: dffffc0000000000 RSI: ffff88808bcd2f70 RDI: 0000000000000282
RBP: ffff8880aed070b8 R08: 0000000000000000 R09: ffff88808bcd2f90
R10: ffff88808bcd2f70 R11: ffff88808bcd2600 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88808bcd2600 R15: ffff8880aa810dc0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
kernel_text_address+0x73/0xf0 kernel/extable.c:150
__kernel_text_address+0xd/0x40 kernel/extable.c:105
unwind_get_return_address arch/x86/kernel/unwind_frame.c:18 [inline]
unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:13
__save_stack_trace+0x7b/0xd0 arch/x86/kernel/stacktrace.c:45
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
save_stack+0x45/0xd0 mm/kasan/kasan.c:447
batman_adv: batadv0: Interface activated: batadv_slave_0
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!
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!
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!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc mm/slab.c:3390 [inline]
kmem_cache_alloc+0x11b/0x780 mm/slab.c:3550
kmem_cache_zalloc include/linux/slab.h:651 [inline]
fill_pool lib/debugobjects.c:110 [inline]
__debug_object_init+0x5b8/0x8e0 lib/debugobjects.c:341
debug_object_init lib/debugobjects.c:393 [inline]
debug_object_activate+0x274/0x450 lib/debugobjects.c:474
debug_rcu_head_queue kernel/rcu/rcu.h:152 [inline]
__call_rcu.constprop.0+0x35/0x820 kernel/rcu/tree.c:3050
call_rcu+0x12/0x20 kernel/rcu/tree_plugin.h:730
dst_release+0x5c/0x80 net/core/dst.c:188
refdst_drop include/net/dst.h:286 [inline]
skb_dst_drop include/net/dst.h:298 [inline]
__dev_queue_xmit+0x17e1/0x25e0 net/core/dev.c:3484
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_resolve_output net/core/neighbour.c:1369 [inline]
neigh_resolve_output+0x4ff/0x8a0 net/core/neighbour.c:1349
neigh_output include/net/neighbour.h:500 [inline]
ip6_finish_output2+0x9ab/0x21b0 net/ipv6/ip6_output.c:120
ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171
dst_output include/net/dst.h:462 [inline]
NF_HOOK include/linux/netfilter.h:250 [inline]
ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483
ndisc_send_rs+0x12b/0x670 net/ipv6/ndisc.c:677
addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3757
call_timer_fn+0x161/0x670 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+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 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+0x1ea/0x430 kernel/locking/lockdep.c:3997
RSP: 0018:ffff888097f7fcb0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fe2ce1 RBX: ffff88808bcd2600 RCX: 0000000002e305b3
RDX: dffffc0000000000 RSI: ffff88808bcd2ea8 RDI: 0000000000000282
RBP: ffff888097f7fcf8 R08: 00000000000036e7 R09: ffffffff8956afb8
R10: ffff88808bcd2ea8 R11: ffff88808bcd2600 R12: ffff8880a0fa4a88
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
fasync_remove_entry+0x28/0x200 fs/fcntl.c:861
fasync_helper+0x9c/0xa9 fs/fcntl.c:970
perf_fasync+0x87/0xc0 kernel/events/core.c:5529
__fput+0x5c4/0x7a0 fs/file_table.c:206
____fput+0x16/0x20 fs/file_table.c:244
task_work_run+0x114/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x403a80
RSP: 002b:00007fff99e7dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000403a80
RDX: 00000000ffffffff RSI: 000000000000000d RDI: 0000000000000003
RBP: 0000000000045669 R08: 0000000100000000 R09: 0000000100000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000404cb0 R14: 0000000000000000 R15: 0000000000000000
device veth0_macvtap entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
device veth0_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
device veth1_macvtap entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
device veth0_macvtap entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0