rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=2884/1/0x4000000000000000 softirq=18809/18810 fqs=4818
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1085968          0            0
rcu: 	cputime:    31575      20903           82   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=8285 q=3226 ncpus=2)
CPU: 1 UID: 0 PID: 6192 Comm: syz.1.90 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 cb 9e 56 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 13 cd 1f f6 65 8b 05 bc f9 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e05c0 EFLAGS: 00000206
RAX: bacea607cdfa1400 RBX: 0000000000000a02 RCX: bacea607cdfa1400
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc900001e0640 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffffffff8f62e920 R14: ffffffff99d60290 R15: 1ffff9200003c0b8
FS:  00007f75f7d256c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75f4df5fc8 CR3: 000000001fa5c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 timer_init_key+0x41/0x2d0
 ___neigh_create+0x9f2/0x2260
 ip6_finish_output2+0xb4d/0x16a0
 ndisc_send_skb+0xb47/0x1400
 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:__sanitizer_cov_trace_switch+0x7/0x130
Code: 0a 20 e9 4c 35 b1 09 cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 06 <48> 8b 4e 08 48 83 c1 f8 48 c1 c1 3d 48 83 f9 02 7f 1e 48 85 c9 74
RSP: 0018:ffffc900040dfcf8 EFLAGS: 00000246
RAX: 000000000000000d RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888029ba0000 RSI: ffffffff8e16fb80 RDI: 0000000000000001
RBP: ffffc900040dfdc8 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffc900040dfe60 R11: fffff5200081bfce R12: ffffc900040dfd60
R13: 0000000000000001 R14: 1ffff9200081bfa8 R15: 0000000000000000
 do_futex+0xea/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f75f6f8e9a9
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:00007f75f7d250e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f75f71b5fa8 RCX: 00007f75f6f8e9a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f75f71b5fac
RBP: 00007f75f71b5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75f71b5fac
R13: 0000000000000000 R14: 00007fff6a383840 R15: 00007fff6a383928
 </TASK>
sched: DL replenish lagged too much
