rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2683 jiffies s: 14049 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: cdc_wdm 5-1:1.0: nonzero urb status received: -71 NMI backtrace for cpu 1 CPU: 1 PID: 29718 Comm: modprobe Not tainted 6.7.0-rc5-syzkaller-g1760bfa7d7ca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:417 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 75 fb 14 ff eb a4 e8 ce fb 14 ff eb e1 66 RSP: 0018:ffffc90000198400 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: ffffffff828681f5 RDI: ffffffff8c155fa0 RBP: ffffffff8c155f60 R08: 0000000000000001 R09: 000000000000001f R10: 0000000000000000 R11: 205d383330363154 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8c155fb0 R15: 0000000000000018 FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9277912440 CR3: 0000000112fb9000 CR4: 00000000003506f0 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:710 serial8250_console_write+0x18e/0x1060 drivers/tty/serial/8250/8250_port.c:3409 console_emit_next_record kernel/printk/printk.c:2901 [inline] console_flush_all+0x4d5/0xd50 kernel/printk/printk.c:2967 console_unlock+0x10c/0x260 kernel/printk/printk.c:3036 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303 dev_vprintk_emit drivers/base/core.c:4850 [inline] dev_printk_emit+0xfb/0x140 drivers/base/core.c:4861 __dev_printk+0xf5/0x270 drivers/base/core.c:4873 _dev_err+0xe5/0x120 drivers/base/core.c:4916 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+0x193/0x580 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+0x20a/0x94b 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:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x20 kernel/kcov.c:289 Code: 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 08 ff ff ff 0f 1f 84 00 00 00 00 00 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 RSP: 0018:ffffc9000fca7818 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff810caf7b RDX: 1ffff92001f94f36 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000fca78b8 R08: 0000000000000007 R09: 0000000000000000 R10: ffffffff8118b74e R11: 0000000000000000 R12: ffffc9000fca7828 R13: ffffffff813b80a0 R14: ffffc9000fca78e8 R15: ffff888103395700 arch_stack_walk+0xe9/0x170 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x13c/0x190 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook mm/slub.c:1826 [inline] slab_free mm/slub.c:3809 [inline] kmem_cache_free+0x144/0x3b0 mm/slub.c:3831 vma_lock_free kernel/fork.c:471 [inline] __vm_area_free+0x38/0x50 kernel/fork.c:527 remove_vma+0x128/0x170 mm/mmap.c:146 exit_mmap+0x453/0xa60 mm/mmap.c:3332 __mmput kernel/fork.c:1349 [inline] mmput+0xdb/0x420 kernel/fork.c:1371 exit_mm kernel/exit.c:567 [inline] do_exit+0x9ad/0x2a50 kernel/exit.c:858 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f92779d0a90 Code: Unable to access opcode bytes at 0x7f92779d0a66. RSP: 002b:00007fffeb6075b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f9277ac1860 RCX: 00007f92779d0a90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001 RBP: 00007f9277ac1860 R08: 00007fffeb607430 R09: 00007fffeb607510 R10: 00007fffeb607470 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f9277ac5658 R15: 0000000000000001 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: nonzero urb status received: -71 cdc_wdm 5-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 5-1:1.0: wdm_int_callback - usb_submit_urb failed with result -19 usb 6-1: new low-speed USB device number 13 using dummy_hcd usb 6-1: device descriptor read/64, error -71 usb 6-1: device descriptor read/64, error -71 usb 6-1: new low-speed USB device number 14 using dummy_hcd usb 6-1: device descriptor read/64, error -71 usb 6-1: device descriptor read/64, error -71 usb usb6-port1: attempt power cycle usb 6-1: new low-speed USB device number 15 using dummy_hcd usb 6-1: device descriptor read/8, error -71 usb 6-1: device descriptor read/8, error -71 imon 1-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored usb 6-1: new low-speed USB device number 16 using dummy_hcd usb 6-1: device descriptor read/8, error -71 usb 6-1: device descriptor read/8, error -71 usb usb6-port1: unable to enumerate USB device