rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=8914/1/0x4000000000000000 softirq=23154/23164 fqs=4973
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1134139          0            0
rcu: 	cputime:    20389      32090           86   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=14277 q=10722 ncpus=2)
CPU: 1 UID: 0 PID: 7035 Comm: syz.3.406 Not tainted syzkaller #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:__sanitizer_cov_trace_switch+0x8/0xf0
Code: e9 cd 4f eb 09 cc 66 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 46 08 <48> 8d 48 ff 48 89 c2 48 31 ca 48 39 ca 0f 86 c6 00 00 00 f3 48 0f
RSP: 0018:ffffc90000a08840 EFLAGS: 00000246
RAX: 0000000000000010 RBX: ffff8881bfb8a302 RCX: ffff88810f991dc0
RDX: 0000000000000100 RSI: ffffffff8fe26000 RDI: 00000000000086dd
RBP: 0000000000000038 R08: 0000000000000000 R09: 0000000000000038
R10: dffffc0000000000 R11: ffffffff89a34a60 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88816a8e6000 R15: 00000000000086dd
FS:  00007f216f0906c0(0000) GS:ffff8882a9251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000009d2000 CR3: 00000001bad22000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 eth_header+0x46/0x200
 neigh_resolve_output+0x4c9/0x720
 ip6_output+0x337/0x540
 ndisc_send_skb+0xcb2/0x1650
 addrconf_rs_timer+0x2d2/0x6c0
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 43 e2 e3 f5 e8 6e b2 1e f6 fb bf 01 00 00 00 <e8> d3 a2 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 34 b4 1e f6 bf 01
RSP: 0018:ffffc900027cfae8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8c2a8d60 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9031b4f7 R09: 1ffffffff206369e
R10: dffffc0000000000 R11: fffffbfff206369f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x14f/0x8f0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:perf_ioctl+0xe80/0x20d0
Code: 49 c7 c7 f7 ff ff ff e9 18 f3 ff ff e8 69 a6 c5 ff 45 31 ff e9 0b f3 ff ff e8 5c a6 c5 ff 49 c7 c7 ea ff ff ff e9 fa f2 ff ff <e8> 4b a6 c5 ff 45 31 ff e9 ed f2 ff ff e8 3e a6 c5 ff 48 83 c3 58
RSP: 0018:ffffc900027cfc00 EFLAGS: 00000246
RAX: ffffffff8200876e RBX: 0000000000000000 RCX: 0000000000000002
RDX: ffff88810f991dc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900027cfea8 R08: ffff88816c7ebb5f R09: 1ffff1102d8fd76b
R10: dffffc0000000000 R11: ffffed102d8fd76c R12: ffff8881b9f331c0
R13: fffff520004f9f94 R14: dffffc0000000000 R15: ffffc90005dc9000
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f216e19ce59
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:00007f216f090028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f216e415fa0 RCX: 00007f216e19ce59
RDX: 0000000000000006 RSI: 0000000040042408 RDI: 0000000000000003
RBP: 00007f216e232e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f216e416038 R14: 00007f216e415fa0 R15: 00007ffc3e142a58
 </TASK>
sched: DL replenish lagged too much
