rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4074/2:b..l
	(detected by 1, t=10502 jiffies, g=4693, q=60)
task:kworker/0:4     state:R  running task     stack:    0 pid: 4074 ppid:     2 flags:0x00000008
Workqueue: ipv6_addrconf addrconf_dad_work
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0xf10/0x1e48 kernel/sched/core.c:6373
 preempt_schedule_common+0x140/0x260 kernel/sched/core.c:6549
 preempt_schedule+0x64/0x84 kernel/sched/core.c:6574
 __local_bh_enable_ip+0x254/0x470 kernel/softirq.c:390
 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:32
 ip6t_do_table+0x11d4/0x1410 net/ipv6/netfilter/ip6_tables.c:377
 ip6table_mangle_hook+0x1d4/0x618 net/ipv6/netfilter/ip6table_mangle.c:72
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xc8/0x1f4 net/netfilter/core.c:584
 nf_hook+0x264/0x3f4 include/linux/netfilter.h:257
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip6_output+0x240/0x594 net/ipv6/ip6_output.c:234
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK+0x160/0x4ec include/linux/netfilter.h:302
 mld_sendpack+0x828/0x1264 net/ipv6/mcast.c:1820
 mld_send_initial_cr+0x324/0x3d4 net/ipv6/mcast.c:2239
 ipv6_mc_dad_complete+0x78/0x2d0 net/ipv6/mcast.c:2247
 addrconf_dad_completed+0x580/0xb40 net/ipv6/addrconf.c:4258
 addrconf_dad_work+0x9ec/0x126c
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
rcu: rcu_preempt kthread starved for 10505 jiffies! g4693 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:    0 pid:   15 ppid:     2 flags:0x00000008
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0xf10/0x1e48 kernel/sched/core.c:6373
 schedule+0x11c/0x1c8 kernel/sched/core.c:6456
 schedule_timeout+0x1d8/0x344 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x26c/0x13d4 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xc4/0x2c4 kernel/rcu/tree.c:2145
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
rcu: Stack dump where RCU GP kthread last ran:
Task dump for CPU 0:
task:syz.3.4         state:R  running task     stack:    0 pid: 4116 ppid:  4039 flags:0x00000000
Call trace:
 __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
 unwind_frame+0x31c/0x550 arch/arm64/kernel/stacktrace.c:113