rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
 P5447/1:b..l

rcu: 	(detected by 0, t=10502 jiffies, g=26325, q=6191 ncpus=2)
task:kworker/1:5     state:R  running task     stack:23880 pid:5447  tgid:5447  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1138/0x47e0 kernel/sched/core.c:7189
 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7513
 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x1da/0x740 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0xfc9/0x2090 arch/x86/kernel/unwind_orc.c:701
Code: b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 6c 0d 00 00 41 39 5d 00 0f 84 9c 06 00 00 <bd> 01 00 00 00 e9 d0 f3 ff ff ba 28 00 00 00 4c 89 f6 4c 89 ef 48
RSP: 0018:ffffc90003b2f288 EFLAGS: 00000283
RAX: ffffc90003b30001 RBX: ffffc90003b2f648 RCX: ffffffff8b611c01
RDX: ffffc90003b2f650 RSI: ffffc90003b2f630 RDI: ffffc90003b2f308
RBP: ffffc90003b28000 R08: 0000000000000001 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000011873 R12: ffffc90003b2f348
R13: ffffc90003b2f2f8 R14: ffffc90003b2f648 R15: ffffc90003b2f32c
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 unpoison_slab_object mm/kasan/common.c:340 [inline]
 __kasan_slab_alloc+0x6e/0x70 mm/kasan/common.c:366
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4570 [inline]
 slab_alloc_node mm/slub.c:4899 [inline]
 kmem_cache_alloc_noprof+0x2e7/0x6a0 mm/slub.c:4906
 __kernfs_new_node+0xd2/0x9f0 fs/kernfs/dir.c:664
 kernfs_new_node+0x11b/0x1a0 fs/kernfs/dir.c:748
 kernfs_create_link+0xcc/0x240 fs/kernfs/symlink.c:39
 sysfs_do_create_link_sd+0x90/0x140 fs/sysfs/symlink.c:44
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x61/0xc0 fs/sysfs/symlink.c:92
 usb_new_device.cold+0xb61/0x115c drivers/usb/core/hub.c:2707
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x314d/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
 process_scheduled_works kernel/workqueue.c:3397 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>