rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=c95/1/0x4000000000000000 softirq=120087/120087 fqs=4468 
	(t=10500 jiffies g=167661 q=1262)
NMI backtrace for cpu 0
CPU: 0 PID: 6905 Comm: syz.2.6000 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x22d/0x380 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x31f/0x5f0 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6ec/0x1120 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:2021
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x397/0x8b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:ktime_get_with_offset+0x8b/0x320 kernel/time/timekeeping.c:872
Code: 07 08 22 0c 31 ff 89 ee e8 12 07 10 00 85 ed 0f 85 83 02 00 00 e8 a5 03 10 00 4c 8b 34 24 4c 89 f0 48 c1 e8 03 48 89 44 24 18 <e8> 60 fa ff ff 8b 1d 2a 0b ca 0a 89 de 83 e6 01 31 ff e8 de 06 10
RSP: 0018:ffffc90000006e68 EFLAGS: 00000246
RAX: ffffffff81690dd5 RBX: 0000000000052042 RCX: ffff88807a97bb80
RDX: 0000000000000100 RSI: 0000000000000018 RDI: 0000000000000040
RBP: fffffffffeb3d3ab R08: ffffffff901ef1c7 R09: 1ffffffff203de38
R10: dffffc0000000000 R11: fffffbfff203de39 R12: 0027f81e2ee5ca2e
R13: 000001fb63109b96 R14: ffffffff8c331808 R15: 0000000000000018
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 __net_timestamp include/linux/skbuff.h:3982 [inline]
 netif_rx_internal+0x379/0x550 net/core/dev.c:4992
 netif_rx+0x94/0x380 net/core/dev.c:5044
 veth_forward_skb drivers/net/veth.c:297 [inline]
 veth_xmit+0x603/0xa50 drivers/net/veth.c:350
 __netdev_start_xmit include/linux/netdevice.h:5033 [inline]
 netdev_start_xmit include/linux/netdevice.h:5047 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x297/0x7d0 net/core/dev.c:3678
 __dev_queue_xmit+0x195d/0x2e50 net/core/dev.c:4305
 __bond_start_xmit drivers/net/bonding/bond_main.c:-1 [inline]
 bond_start_xmit+0x11ea/0x1a50 drivers/net/bonding/bond_main.c:5186
 __netdev_start_xmit include/linux/netdevice.h:5033 [inline]
 netdev_start_xmit include/linux/netdevice.h:5047 [inline]
 xmit_one net/core/dev.c:3662 [inline]
 dev_hard_start_xmit+0x297/0x7d0 net/core/dev.c:3678
 __dev_queue_xmit+0x195d/0x2e50 net/core/dev.c:4305
 neigh_hh_output include/net/neighbour.h:493 [inline]
 neigh_output include/net/neighbour.h:507 [inline]
 ip6_finish_output2+0x1134/0x1640 net/ipv6/ip6_output.c:132
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xb7c/0x1410 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3966
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_lock_switch+0x12f/0x290 kernel/sched/core.c:4804
Code: 83 c7 18 be ff ff ff ff e8 0e 1b 6c 08 85 c0 74 46 4d 85 ff 75 62 0f 1f 44 00 00 48 89 df e8 c8 8a 75 08 e8 f3 df 2a 00 fb 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 2f 0e fe ff 43 80 3c 2c
RSP: 0018:ffffc9000366f7f8 EFLAGS: 00000286
RAX: 4569995e602a9300 RBX: ffff88801e7f3b80 RCX: 4569995e602a9300
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4540
RBP: 1ffff11017207613 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: 1ffff110172075c1
R13: dffffc0000000000 R14: ffff8880b903ae08 R15: 0000000000000000
 finish_task_switch+0x12f/0x650 kernel/sched/core.c:4921
 context_switch kernel/sched/core.c:5052 [inline]
 __schedule+0x11cb/0x4350 kernel/sched/core.c:6395
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:get_signal+0x9f/0x12e0 kernel/signal.c:2680
Code: 24 38 4c 8b b0 20 09 00 00 48 8d 9d 78 09 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d5 ba 72 00 48 83 3b 00 <0f> 85 8f 11 00 00 e8 f6 8c 2d 00 e8 b1 2f 51 00 84 c0 0f 85 8c 11
RSP: 0018:ffffc9000366fbd0 EFLAGS: 00000246
RAX: 1ffff1100f52f89f RBX: ffff88807a97c4f8 RCX: 0000000000080000
RDX: ffffc9001397c000 RSI: 000000000007ffff RDI: ffff88807a97c4a0
RBP: ffff88807a97bb80 R08: ffffc9000366fe37 R09: ffffc9000366fde0
R10: dffffc0000000000 R11: fffff520006cdfc7 R12: dffffc0000000000
R13: ffff88805a84b780 R14: ffff888017a5c100 R15: ffffc9000366fde0
 arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff586ae5159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff584d1c028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000006 RBX: 00007ff586d6d090 RCX: 00007ff586ae5159
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007ff586b7c024 R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff586d6d128 R14: 00007ff586d6d090 R15: 00007ffd0a1f3a18
 </TASK>