rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=e7ec/1/0x4000000000000000 softirq=16662/16662 fqs=5191
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1287697          0            0
rcu: 	cputime:     9166      43313           34   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=12497 q=7100 ncpus=2)
CPU: 0 UID: 0 PID: 6557 Comm: syz.1.252 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:eth_header_cache+0x60/0x180
Code: ff ff ff e9 da 00 00 00 49 bd 00 00 00 00 00 fc ff df e8 a3 a4 25 f8 4d 8d be 20 03 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 ff e8 a6 ff 91 f8 4d 8b 3f 48 8d bb 8e 00 00 00 4c 8d
RSP: 0018:ffffc90000007870 EFLAGS: 00000246
RAX: 1ffff11022394e64 RBX: ffff888111ca71e0 RCX: ffff88810e9a8000
RDX: 0000000000000100 RSI: 000000000000dd86 RDI: 0000000000000100
RBP: 000000000000dd86 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: ffffffff89a027b0 R12: ffffffff8ce0ed50
R13: dffffc0000000000 R14: ffff888111ca7000 R15: ffff888111ca7320
FS:  00007f3feb86c6c0(0000) GS:ffff88818dc84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000018c0 CR3: 00000001150aa000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 neigh_resolve_output+0x2af/0x750
 ip6_output+0x340/0x550
 ndisc_send_skb+0xd0b/0x1670
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/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:finish_task_switch+0x427/0xbe0
Code: 41 c7 84 24 e0 0d 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 d6 9e 17 0a e8 61 f7 38 00 fb 49 8d bd b0 16 00 00 <48> 89 f8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 7b 03 00 00 41 80
RSP: 0018:ffffc9000a807830 EFLAGS: 00000206
RAX: 0000000000000247 RBX: 1ffff11024207784 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dfabd2a RDI: ffff88810e9a96b0
RBP: ffffc9000a807890 R08: ffffffff9030c1f7 R09: 1ffffffff206183e
R10: dffffc0000000000 R11: fffffbfff206183f R12: ffff88812103ae88
R13: ffff88810e9a8000 R14: ffff88810efa0000 R15: dffffc0000000000
 __schedule+0x1829/0x5740
 preempt_schedule_common+0x82/0xd0
 preempt_schedule_thunk+0x16/0x30
 try_to_wake_up+0x828/0x1380
 wake_up_q+0x85/0xd0
 futex_wake+0x49a/0x580
 do_futex+0x395/0x420
 __se_sys_futex+0x3a8/0x450
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3fea99cdd9
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:00007f3feb86c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f3feac16098 RCX: 00007f3fea99cdd9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f3feac1609c
RBP: 00007f3feac16090 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3feac16128 R14: 00007ffc6b520de0 R15: 00007ffc6b520ec8
 </TASK>
sched: DL replenish lagged too much
