cgroup: Unknown subsys name 'perf_event'
cgroup: Unknown subsys name 'net_cls'
cgroup: Unknown subsys name 'perf_event'
cgroup: Unknown subsys name 'net_cls'
------------[ cut here ]------------
WARNING: CPU: 1 PID: 59 at kernel/kthread.c:83 to_kthread kernel/kthread.c:83 [inline]
WARNING: CPU: 1 PID: 59 at kernel/kthread.c:83 kthread_is_per_cpu+0xc4/0xf0 kernel/kthread.c:519
Modules linked in:
CPU: 1 PID: 59 Comm: kworker/u4:1 Not tainted 5.10.45 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue:  0x0 (events_unbound)
RIP: 0010:to_kthread kernel/kthread.c:83 [inline]
RIP: 0010:kthread_is_per_cpu+0xc4/0xf0 kernel/kthread.c:519
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 2e 4c 8b 23 41 83 e4 01 e8 79 83 23 00 44 89 e0 5b 5d 41 5c c3 e8 6c 83 23 00 <0f> 0b eb 88 e8 73 a1 4e 00 e9 68 ff ff ff e8 79 a1 4e 00 eb 9a 48
RSP: 0018:ffff88800c3a7990 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff8880404be500 RCX: ffffffff811c07dc
RDX: ffff88800bdfe500 RSI: ffffffff811c0854 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880404be500
R10: 0000000000000000 R11: ffffffff85dd105b R12: ffff8880404be5a8
R13: ffff88800c3a7b18 R14: ffff88800c3a7b18 R15: ffff8880404be500
FS:  0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc77f02fe8 CR3: 000000003f528000 CR4: 0000000000350ee0
Call Trace:
 can_migrate_task+0x90/0xa00 kernel/sched/fair.c:7566
 detach_tasks kernel/sched/fair.c:7714 [inline]
 load_balance+0xa0e/0x2990 kernel/sched/fair.c:9638
 newidle_balance+0x6bc/0xed0 kernel/sched/fair.c:10610
 pick_next_task_fair+0x48/0xb10 kernel/sched/fair.c:7153
 pick_next_task kernel/sched/core.c:4342 [inline]
 __schedule+0x327/0x1e70 kernel/sched/core.c:4493
 schedule+0xcb/0x270 kernel/sched/core.c:4603
 worker_thread+0x14f/0x1310 kernel/workqueue.c:2437
 kthread+0x38f/0x470 kernel/kthread.c:292
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296
irq event stamp: 1464174
hardirqs last  enabled at (1464173): [<ffffffff83c50d8f>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
hardirqs last  enabled at (1464173): [<ffffffff83c50d8f>] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199
hardirqs last disabled at (1464174): [<ffffffff83c412cf>] __schedule+0xeef/0x1e70 kernel/sched/core.c:4425
softirqs last  enabled at (1464086): [<ffffffff81088763>] memcpy include/linux/string.h:399 [inline]
softirqs last  enabled at (1464086): [<ffffffff81088763>] fpu__copy+0x173/0x550 arch/x86/kernel/fpu/core.c:241
softirqs last disabled at (1464084): [<ffffffff81088691>] fpu__copy+0xa1/0x550 arch/x86/kernel/fpu/core.c:229
---[ end trace fdcce27f50df42bf ]---

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