rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (29999 ticks this GP) idle=1604/1/0x4000000000000000 softirq=18953/18953 fqs=14692
rcu: 	(t=30000 jiffies g=41753 q=1053 ncpus=2)
CPU: 1 PID: 3080 Comm: syz-executor.0 Not tainted 6.4.0-rc5-syzkaller #0
Hardware name: linux,dummy-virt (DT)
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_add_valid+0x24/0xb4 lib/list_debug.c:30
lr : __list_add include/linux/list.h:69 [inline]
lr : list_add_tail include/linux/list.h:102 [inline]
lr : list_move_tail include/linux/list.h:230 [inline]
lr : fq_pie_qdisc_dequeue+0x1b4/0x224 net/sched/sch_fq_pie.c:263
sp : ffff80000800b990
x29: ffff80000800b990 x28: 0000000000002000 x27: 00000000000000ff
x26: f3ff000005c88928 x25: f9ff00000308de80 x24: f7ff0000059eccf0
x23: f7ff0000059ecda0 x22: f7ff0000059ecdb0 x21: f7ff0000059ecda0
x20: f7ff0000059ecc00 x19: f3ff00002cd6dbf0 x18: 0000000000000002
x17: 010100000000a3a1 x16: 0085020000000000 x15: 0000000000000024
x14: 0000000000000004 x13: 0000000000000000 x12: 0000000000082000
x11: 000000000f611417 x10: 0000000000000009 x9 : 0a0eadee668419d1
x8 : 0000000002000000 x7 : 0000000000000000 x6 : 00000006fb4c6695
x5 : 01ffffffffffffff x4 : f7ff0000059ecda0 x3 : dead000000000122
x2 : f7ff0000059ecda0 x1 : f7ff0000059ecda0 x0 : f3ff00002cd6dbf0
Call trace:
 __list_add_valid+0x24/0xb4 lib/list_debug.c:27
 __list_add include/linux/list.h:69 [inline]
 list_add_tail include/linux/list.h:102 [inline]
 list_move_tail include/linux/list.h:230 [inline]
 fq_pie_qdisc_dequeue+0x1b4/0x224 net/sched/sch_fq_pie.c:263
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x78/0x74c net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3868 [inline]
 __dev_queue_xmit+0x714/0xd40 net/core/dev.c:4210
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_connected_output+0xc4/0x124 net/core/neighbour.c:1581
 neigh_output include/net/neighbour.h:544 [inline]
 ip6_finish_output2+0x1b0/0x7b8 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x220/0x360 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x74/0x1d4 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 NF_HOOK.constprop.0+0x50/0xe0 include/linux/netfilter.h:303
 ndisc_send_skb+0x2f0/0x488 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x5c/0x1b0 net/ipv6/ndisc.c:718
 addrconf_rs_timer+0x154/0x2ac net/ipv6/addrconf.c:3936
 call_timer_fn.constprop.0+0x24/0x80 kernel/time/timer.c:1700
 expire_timers+0x9c/0xd4 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0xf4/0x254 kernel/time/timer.c:2035
 _stext+0x124/0x290
 ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899
 do_softirq_own_stack+0x1c/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xe4/0x100 kernel/softirq.c:650
 irq_exit_rcu+0x10/0x1c kernel/softirq.c:662
 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
 el1_interrupt+0x38/0x64 arch/arm64/kernel/entry-common.c:486
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:587
 mem_cgroup_lruvec include/linux/memcontrol.h:743 [inline]
 mod_objcg_mlstate mm/memcontrol.c:2915 [inline]
 obj_cgroup_charge+0x0/0x1dc mm/memcontrol.c:3254
 dup_fd+0x3c/0x31c fs/file.c:324
 copy_files kernel/fork.c:1795 [inline]
 copy_process+0xb18/0x1468 kernel/fork.c:2495
 kernel_clone+0x5c/0x378 kernel/fork.c:2915
 __do_sys_clone+0x58/0x84 kernel/fork.c:3058
 __se_sys_clone kernel/fork.c:3026 [inline]
 __arm64_sys_clone+0x20/0x2c kernel/fork.c:3026
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52
 el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x38/0xa4 arch/arm64/kernel/syscall.c:193
 el0_svc+0x2c/0xb0 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0xb8/0xbc arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:591