rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=119129, q=188 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295058121-4295047619), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g119129 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:26888 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_timeout+0x158/0x2c0
 rcu_gp_fqs_loop+0x312/0x11d0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 29832 Comm: syz.0.8912 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:__update_page_owner_handle+0x12f/0x570
Code: 8e 48 c1 e8 03 80 3c 08 00 74 0c 48 c7 c7 d8 4e 1a 8e e8 f4 a3 f5 ff 4c 2b 3d b5 09 e0 0b 49 c1 ff 06 4c 89 ff e8 11 cd 01 00 <48> 85 c0 0f 84 41 03 00 00 48 89 c5 4c 89 74 24 18 49 ff c7 4c 89
RSP: 0018:ffffc90000a084e0 EFLAGS: 00000286
RAX: ffff888160d87400 RBX: 0000000000000001 RCX: ffff8881b488ba80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a08628 R08: ffffffff823a445a R09: ffffffff8e75e3e0
R10: ffff8881b488c3a0 R11: ffffffff81b0bfa0 R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff823a445a R15: 0000000000174e40
FS:  00007f85a0bea6c0(0000) GS:ffff8882a9463000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31a1eff8 CR3: 00000001803d2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __set_page_owner+0x10a/0x4c0
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x24dc/0x2580
 __alloc_frozen_pages_noprof+0x18d/0x380
 allocate_slab+0x77/0x660
 refill_objects+0x331/0x3c0
 __pcs_replace_empty_main+0x2f9/0x5e0
 kmem_cache_alloc_node_noprof+0x441/0x690
 __alloc_skb+0x27d/0x7d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:plist_del+0x0/0x3f0
Code: e1 07 80 c1 03 38 c1 0f 8c b8 fd ff ff 4c 89 f7 e8 25 5d 87 f6 e9 ab fd ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 55 41 57 41 56 41 55 41 54 53 48 83 ec 28 48 89 f3 49
RSP: 0018:ffffc90009b7fb68 EFLAGS: 00000246
RAX: ffffffff81b86e9f RBX: ffffc90009b9faa0 RCX: 0000000000080000
RDX: ffffc900288dc000 RSI: ffff8881b6f82188 RDI: ffffc90009b9faa0
RBP: 0000000000000001 R08: ffff8881b488802b R09: 1ffff11036911005
R10: dffffc0000000000 R11: ffffed1036911006 R12: dffffc0000000000
R13: ffffc90009b9fad0 R14: ffff8881b6f82140 R15: ffff8881b6f82148
 __futex_unqueue+0xf0/0x160
 futex_wake_mark+0xe2/0x1f0
 futex_wake+0x39b/0x580
 do_futex+0x395/0x420
 __se_sys_futex+0x3a8/0x450
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f859fd9c799
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:00007f85a0bea0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f85a0016098 RCX: 00007f859fd9c799
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f85a001609c
RBP: 00007f85a0016090 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f85a0016128 R14: 00007ffe9670ab40 R15: 00007ffe9670ac28
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105181694344 wd_nsec: 105181696787
