rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=bd4c/0/0x3 softirq=74223/74224 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     5255          0            0
rcu: 	cputime:      121      52377            0   ==> 52520(ms)
rcu: 	(t=10503 jiffies g=63521 q=3568 ncpus=2)
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d c4 48 fe 0b 48 89 de 5b e9 73 98 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 40 a0 92 65 8b 15 e8 93 e0 10 81 e2 00 01 ff 00
RSP: 0018:ffffc90000007018 EFLAGS: 00000202
RAX: ffffffff899885ce RBX: ffff888055856b98 RCX: dffffc0000000000
RDX: ffff888055856b98 RSI: ffff888055856b98 RDI: ffff888055856ad0
RBP: ffff888055856b88 R08: ffffffff8de95100 R09: 0000000000000002
R10: 0000000000000001 R11: ffffffff89988130 R12: dffffc0000000000
R13: ffff888055856ad0 R14: ffff888055856b98 R15: ffff888055856ba0
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2727f9 CR3: 000000000df36000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __list_add include/linux/list.h:153 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 list_move_tail include/linux/list.h:311 [inline]
 hhf_dequeue+0x49e/0x940 net/sched/sch_hhf.c:439
 dequeue_skb net/sched/sch_generic.c:294 [inline]
 qdisc_restart net/sched/sch_generic.c:399 [inline]
 __qdisc_run+0x23c/0x15f0 net/sched/sch_generic.c:417
 __dev_xmit_skb net/core/dev.c:4171 [inline]
 __dev_queue_xmit+0x1056/0x3b50 net/core/dev.c:4679
 dev_queue_xmit include/linux/netdevice.h:3361 [inline]
 neigh_hh_output include/net/neighbour.h:531 [inline]
 neigh_output include/net/neighbour.h:545 [inline]
 ip_finish_output2+0xd03/0x1160 net/ipv4/ip_output.c:235
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip_output+0x2a1/0x3c0 net/ipv4/ip_output.c:436
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 ip_send_skb net/ipv4/ip_output.c:1506 [inline]
 ip_push_pending_frames+0xbe/0x150 net/ipv4/ip_output.c:1526
 __icmp_send+0xf87/0x12d0 net/ipv4/icmp.c:783
 ipv4_send_dest_unreach net/ipv4/route.c:1249 [inline]
 ipv4_link_failure+0x64e/0xa30 net/ipv4/route.c:1256
 dst_link_failure include/net/dst.h:429 [inline]
 arp_error_report+0x115/0x160 net/ipv4/arp.c:296
 neigh_invalidate+0x235/0x460 net/core/neighbour.c:1082
 neigh_timer_handler+0x949/0x1150 net/core/neighbour.c:1173
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: 13 e8 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d f3 d6 0e 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c2
RAX: 9b05934dd7ca5400 RBX: ffffffff819683a8 RCX: 9b05934dd7ca5400
RDX: 0000000000000001 RSI: ffffffff8d9b6e7b RDI: ffffffff8be33300
RBP: ffffffff8de07eb8 R08: ffff8880b8632f9b R09: 1ffff110170c65f3
R10: dffffc0000000000 R11: ffffed10170c65f4 R12: ffffffff8fa37e30
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a20
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:757
 default_idle_call+0x74/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:190 [inline]
 do_idle+0x1e8/0x510 kernel/sched/idle.c:330
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428
 rest_init+0x2de/0x300 init/main.c:744
 start_kernel+0x3a9/0x410 init/main.c:1097
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288
 common_startup_64+0x13e/0x147
 </TASK>