usb 36-1: SetAddress Request (10) to port 0 BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 6159, name: kworker/1:6 preempt_count: 0, expected: 0 RCU nest depth: 0, expected: 0 6 locks held by kworker/1:6/6159: #0: ffff888019fe2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff888019fe2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3319 #1: ffffc9000556fbc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc9000556fbc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3319 #2: ffff888146347188 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:911 [inline] #2: ffff888146347188 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4a20 drivers/usb/core/hub.c:5898 #3: ffff888028e435b8 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3251 [inline] #3: ffff888028e435b8 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5463 [inline] #3: ffff888028e435b8 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] #3: ffff888028e435b8 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5870 [inline] #3: ffff888028e435b8 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x21b8/0x4a20 drivers/usb/core/hub.c:5952 #4: ffff888145f5e258 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5464 [inline] #4: ffff888145f5e258 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] #4: ffff888145f5e258 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5870 [inline] #4: ffff888145f5e258 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x21e5/0x4a20 drivers/usb/core/hub.c:5952 #5: ffff888140469a68 (&mbus->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:44 [inline] #5: ffff888140469a68 (&mbus->lock){+.+.}-{3:3}, at: mon_bus_complete drivers/usb/mon/mon_main.c:134 [inline] #5: ffff888140469a68 (&mbus->lock){+.+.}-{3:3}, at: mon_complete+0x5c/0x200 drivers/usb/mon/mon_main.c:147 irq event stamp: 71576 hardirqs last enabled at (71575): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (71575): [] _raw_spin_unlock_irqrestore+0x85/0x110 kernel/locking/spinlock.c:194 hardirqs last disabled at (71576): [] vhci_urb_enqueue+0xb2c/0xe70 drivers/usb/usbip/vhci_hcd.c:817 softirqs last enabled at (68174): [] __local_bh_enable_ip+0x1a4/0x270 kernel/softirq.c:262 softirqs last disabled at (68168): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (68168): [] spin_lock_bh include/linux/spinlock_rt.h:87 [inline] softirqs last disabled at (68168): [] xprt_destroy_bc+0x45/0x390 net/sunrpc/backchannel_rqst.c:218 CPU: 1 UID: 0 PID: 6159 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Workqueue: usb_hub_wq hub_event Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 __might_resched+0x44b/0x5d0 kernel/sched/core.c:8957 __rt_spin_lock kernel/locking/spinlock_rt.c:48 [inline] rt_spin_lock+0xc7/0x2c0 kernel/locking/spinlock_rt.c:57 spin_lock include/linux/spinlock_rt.h:44 [inline] mon_bus_complete drivers/usb/mon/mon_main.c:134 [inline] mon_complete+0x5c/0x200 drivers/usb/mon/mon_main.c:147 usbmon_urb_complete include/linux/usb/hcd.h:738 [inline] __usb_hcd_giveback_urb+0x251/0x5e0 drivers/usb/core/hcd.c:1647 vhci_urb_enqueue+0xb4f/0xe70 drivers/usb/usbip/vhci_hcd.c:818 usb_hcd_submit_urb+0x31d/0x1a80 drivers/usb/core/hcd.c:1546 usb_start_wait_urb+0x114/0x4c0 drivers/usb/core/message.c:59 usb_internal_control_msg drivers/usb/core/message.c:103 [inline] usb_control_msg+0x232/0x3e0 drivers/usb/core/message.c:154 hub_set_address drivers/usb/core/hub.c:4769 [inline] hub_port_init+0xe24/0x2800 drivers/usb/core/hub.c:5074 hub_port_connect drivers/usb/core/hub.c:5495 [inline] hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] port_event drivers/usb/core/hub.c:5870 [inline] hub_event+0x2532/0x4a20 drivers/usb/core/hub.c:5952 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 usb 36-1: new SuperSpeed USB device number 10 using vhci_hcd usb 36-1: device descriptor read/8, error -110 usb usb36-port1: attempt power cycle usb usb36-port1: unable to enumerate USB device