rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=81a4/1/0x4000000000000000 softirq=16369/16372 fqs=5200
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   924959          0            0
rcu: 	cputime:    34161      18338           53   ==> 52510(ms)
rcu: 	(t=10503 jiffies g=11289 q=3579 ncpus=2)
CPU: 0 UID: 0 PID: 6305 Comm: syz.2.124 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:unwind_next_frame+0x216/0x2390
Code: 8b 15 1e 2f 4b 0c 8d 42 ff 44 39 f8 0f 86 65 18 00 00 44 89 f8 4c 8d 2c 85 50 05 e0 90 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 <48> 89 eb 0f 85 1c 1c 00 00 45 8b 6d 00 44 89 f8 ff c0 48 8d 2c 85
RSP: 0018:ffffc90000006eb8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: cef1cf8ed6756800
RDX: 00000000000a7d15 RSI: ffffffff8be33360 RDI: ffffffff8be33320
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8172c195
R10: ffffc90000006fd8 R11: ffffffff81ac3890 R12: ffffffff8184ecb5
R13: ffffffff90e21900 R14: ffffc90000006f88 R15: 00000000000084ec
FS:  00007fbad35cb6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbad3589d58 CR3: 00000001106b6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0100000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 000000000050060a
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0x157/0x9c0
 __dev_queue_xmit+0x85c/0x3b50
 ip6_finish_output2+0x11fe/0x16a0
 ndisc_send_skb+0xb54/0x1440
 addrconf_rs_timer+0x369/0x670
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__schedule+0x0/0x4cc0
Code: a9 f6 45 89 f8 89 d9 48 8b 5c 24 08 e9 ee fe ff ff cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc900042ffc78 EFLAGS: 00000282
RAX: cef1cf8ed6756800 RBX: 0000000000000000 RCX: cef1cf8ed6756800
RDX: 0000000000000000 RSI: ffffffff8d9b6dff RDI: 0000000000000001
RBP: ffffc900042ffd20 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200085ff90
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__se_sys_futex+0x373/0x400
Code: 4c 8b 7c 24 08 4c 8b 44 24 28 48 8b 54 24 20 48 8b 74 24 10 48 8b 7c 24 18 4c 89 e1 45 89 f1 41 57 e8 61 f7 ff ff 48 83 c4 08 <48> 8b 4c 24 30 48 c7 44 24 40 0e 36 e0 45 48 c7 04 19 00 00 00 00
RSP: 0018:ffffc900042ffde0 EFLAGS: 00000292
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: cef1cf8ed6756800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900042ffee0 R08: 0000000000000000 R09: ffffffff81b30712
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000080
R13: ffffc900042ffe60 R14: 0000000000000000 R15: 0000000000000000
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbad278ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbad35cb0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fbad29b5fa8 RCX: 00007fbad278ebe9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fbad29b5fa8
RBP: 00007fbad29b5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbad29b6038 R14: 00007fff871602e0 R15: 00007fff871603c8
 </TASK>
sched: DL replenish lagged too much
