rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=8a34/1/0x4000000000000000 softirq=12176/12181 fqs=5137
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1219865          0            0
rcu: 	cputime:    32084      20403           77   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=7697 q=3738 ncpus=2)
CPU: 0 UID: 0 PID: 5982 Comm: syz.1.30 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:memcpy_orig+0xe7/0x130
Code: 0f 1f 00 83 fa 08 72 1b 4c 8b 06 4c 8b 4c 16 f8 4c 89 07 4c 89 4c 17 f8 e9 96 c0 02 00 66 0f 1f 44 00 00 83 fa 04 72 1b 8b 0e <44> 8b 44 16 fc 89 0f 44 89 44 17 fc c3 cc cc cc cc 0f 1f 84 00 00
RSP: 0018:ffffc900000073d8 EFLAGS: 00000202
RAX: ffffc900000074d0 RBX: 0000000000000000 RCX: 00000000aaff3333
RDX: 0000000000000006 RSI: ffff88803ae931c0 RDI: ffffc900000074d0
RBP: ffffc90000007570 R08: ffffc900000074d5 R09: 1ffff92000000e9a
R10: dffffc0000000000 R11: fffff52000000e9b R12: ffff88803ae93148
R13: 0000000000000006 R14: 1ffff110075d2629 R15: 1ffff1100731b467
FS:  00007fee4f03e6c0(0000) GS:ffff8880b83e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003ff6 CR3: 000000010a08a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 neigh_fill_info+0x4f8/0xbe0
 __neigh_notify+0x17d/0x310
 neigh_cleanup_and_release+0xb0/0x290
 neigh_remove_one+0x46d/0x4c0
 ___neigh_create+0x485/0x2260
 ip6_finish_output2+0x1175/0x1480
 ip6_output+0x340/0x550
 ndisc_send_skb+0xbce/0x1510
 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:fput+0x0/0xd0
Code: 5b 41 5e 41 5f e9 c0 a2 50 09 cc 66 66 66 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 55 41 57 41 56 53 48 89 fb e8 ce 90 89 ff 4c 8d b3 60
RSP: 0018:ffffc9000405fea0 EFLAGS: 00000293
RAX: ffffffff823afa00 RBX: ffff888108ea4a01 RCX: ffff888108853a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888108ea4a00
RBP: 0000000000000000 R08: ffff88801e04b28f R09: 1ffff11003c09651
R10: dffffc0000000000 R11: ffffed1003c09652 R12: 0000000000005452
R13: 0000000000000003 R14: ffff888108ea4a00 R15: 0000000000000000
 __se_sys_ioctl+0x168/0x170
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fee4e18eba9
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:00007fee4f03e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee4e3d5fa0 RCX: 00007fee4e18eba9
RDX: 00002000000004c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007fee4e211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fee4e3d6038 R14: 00007fee4e3d5fa0 R15: 00007ffc1a3a1578
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 104631148445 wd_nsec: 104631155893
