rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
1-....
} 2650 jiffies s: 3529 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
cdc_wdm 6-1:1.0: nonzero urb status received: -71
NMI backtrace for cpu 1
CPU: 1 PID: 1715 Comm: kworker/1:2 Not tainted 6.6.0-rc6-syzkaller-gec0989703642 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events_power_efficient gc_worker
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:424
Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 18 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 e8 e5 49 16 ff eb a4 e8 3e 4a 16 ff eb e1 66
RSP: 0018:ffffc900001983e0 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff8283a005 RDI: ffffffff8c156d20
RBP: ffffffff8c156ce0 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 205d314320202020 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c156d30 R15: 0000000000000056
FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f83643c7070 CR3: 0000000007c9b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_out drivers/tty/serial/8250/8250.h:122 [inline]
serial8250_clear_IER+0x98/0xb0 drivers/tty/serial/8250/8250_port.c:717
serial8250_console_write+0x1e9/0x1060 drivers/tty/serial/8250/8250_port.c:3417
console_emit_next_record kernel/printk/printk.c:2910 [inline]
console_flush_all+0x4eb/0xfb0 kernel/printk/printk.c:2966
console_unlock+0x10c/0x260 kernel/printk/printk.c:3035
vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2307
dev_vprintk_emit drivers/base/core.c:4849 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4860
__dev_printk+0xf5/0x270 drivers/base/core.c:4872
_dev_err+0xe5/0x120 drivers/base/core.c:4915
wdm_int_callback+0x10f/0xaa0 drivers/usb/class/cdc-wdm.c:269
__usb_hcd_giveback_urb+0x359/0x5c0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x389/0x430 drivers/usb/core/hcd.c:1733
dummy_timer+0x1415/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:1987
call_timer_fn+0x19e/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x20b/0x94e kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_release+0x12/0x680 kernel/locking/lockdep.c:5761
Code: 48 c7 c7 54 3f 33 89 e8 ec 7a 6b 00 e9 fe fe ff ff 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 <41> 55 41 54 49 89 fc 55 53 48 81 ec 90 00 00 00 48 8d 6c 24 10 48
RSP: 0018:ffffc900034cfbd8 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff856d6600 RDI: ffffffff87eac860
RBP: ffff888111000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000022c1f
R13: dffffc0000000000 R14: 000000000004583d R15: 0000000000040000
rcu_lock_release include/linux/rcupdate.h:308 [inline]
rcu_read_unlock include/linux/rcupdate.h:782 [inline]
gc_worker+0xa35/0x17d0 net/netfilter/nf_conntrack_core.c:1565
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: nonzero urb status received: -71
cdc_wdm 6-1:1.0: wdm_int_callback - 0 bytes
cdc_wdm 6-1:1.0: wdm_int_callback - usb_submit_urb failed with result -19
usb 1-1: USB disconnect, device number 118
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
usb 2-1: new low-speed USB device number 115 using dummy_hcd
usb 2-1: Invalid ep0 maxpacket: 64
usb 2-1: new low-speed USB device number 116 using dummy_hcd
usb 2-1: Invalid ep0 maxpacket: 64
usb usb2-port1: attempt power cycle
usb 2-1: new low-speed USB device number 117 using dummy_hcd
usb 2-1: Invalid ep0 maxpacket: 64
usb 2-1: new low-speed USB device number 118 using dummy_hcd
usb 2-1: Invalid ep0 maxpacket: 64
usb usb2-port1: unable to enumerate USB device
usb 1-1: new high-speed USB device number 120 using dummy_hcd
usb 1-1: Using ep0 maxpacket: 8
usb 1-1: config 0 has an invalid interface number: 65 but max is 0
usb 1-1: config 0 has no interface number 0
usb 1-1: config 0 interface 65 altsetting 64 endpoint 0xF has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 65 altsetting 64 endpoint 0x83 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 65 altsetting 64 has 2 endpoint descriptors, different from the interface descriptor's value: 23
usb 1-1: config 0 interface 65 has no altsetting 0
usb 1-1: New USB device found, idVendor=12ab, idProduct=90a1, bcdDevice=1e.eb
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
input: Generic X-Box pad as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.65/input/input61
xpad 1-1:0.65: xpad_irq_out - usb_submit_urb failed with result -19
xpad 1-1:0.65: xpad_irq_in - usb_submit_urb failed with result -19
usb 5-1: new high-speed USB device number 101 using dummy_hcd
usb 5-1: Using ep0 maxpacket: 8
usb 5-1: no configurations
usb 5-1: can't read configurations, error -22
usb 5-1: new high-speed USB device number 102 using dummy_hcd
usb 5-1: Using ep0 maxpacket: 8
usb 5-1: no configurations
usb 5-1: can't read configurations, error -22
usb usb5-port1: attempt power cycle
usb 5-1: new high-speed USB device number 103 using dummy_hcd
usb 5-1: Using ep0 maxpacket: 8
usb 5-1: no configurations
usb 5-1: can't read configurations, error -22