rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2656 jiffies s: 12805 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored NMI backtrace for cpu 1 CPU: 1 PID: 1277 Comm: syz-executor.4 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:ffffc90000198420 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: ffffffff828681f5 RDI: ffffffff8c155fa0 RBP: ffffffff8c155f60 R08: 0000000000000001 R09: 000000000000001f R10: 0000000000000000 R11: 205d314320202020 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8c155fb0 R15: 0000000000000049 FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f94c10c0ff8 CR3: 0000000007c9c000 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_warn+0xe5/0x120 drivers/base/core.c:4917 usb_rx_callback_intf0+0x11c/0x1a0 drivers/media/rc/imon.c:1771 __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:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] RIP: 0010:rcu_is_watching+0x3d/0xb0 kernel/rcu/tree.c:700 Code: c7 c3 a8 6b 03 00 83 f8 07 89 c5 77 7a 48 8d 3c ed 20 f9 a1 87 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <75> 54 48 03 1c ed 20 f9 a1 87 48 b8 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffffc90010057600 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000036ba8 RCX: ffffffff819f6d17 RDX: 1ffffffff0f43f25 RSI: ffffffff86a689a0 RDI: ffffffff87a1f928 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881080e7a08 R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000 rcu_read_unlock include/linux/rcupdate.h:776 [inline] page_ext_put+0x58/0xd0 mm/page_ext.c:533 page_table_check_clear mm/page_table_check.c:89 [inline] page_table_check_clear+0x455/0x9a0 mm/page_table_check.c:61 __page_table_check_pte_clear+0xef/0x100 mm/page_table_check.c:158 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline] ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1301 [inline] zap_pte_range mm/memory.c:1440 [inline] zap_pmd_range mm/memory.c:1583 [inline] zap_pud_range mm/memory.c:1612 [inline] zap_p4d_range mm/memory.c:1633 [inline] unmap_page_range+0x1445/0x2480 mm/memory.c:1654 unmap_single_vma+0x194/0x2b0 mm/memory.c:1700 unmap_vmas+0x229/0x470 mm/memory.c:1744 exit_mmap+0x1ad/0xa60 mm/mmap.c:3308 __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 get_signal+0x23ba/0x2790 kernel/signal.c:2904 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x116/0x1f0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 do_syscall_64+0x4b/0x110 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fdaa3c11a4b Code: Unable to access opcode bytes at 0x7fdaa3c11a21. RSP: 002b:00007fdaa2f4fff0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007fdaa3c11a4b RDX: 00007fdaa2f51080 RSI: 0000000080085502 RDI: 0000000000000003 RBP: 00007fdaa3c5e47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdaa3d31120 R15: 00007fffc5ac9b88 cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: 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 cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: wdm_int_callback - 0 bytes imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 4-1:1.0: nonzero urb status received: -71 cdc_wdm 4-1:1.0: 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 usb 6-1: new high-speed USB device number 90 using dummy_hcd usb 6-1: Using ep0 maxpacket: 32 usb 6-1: New USB device found, idVendor=19d2, idProduct=ff7b, bcdDevice=6c.f2 usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 6-1: Product: syz usb 6-1: Manufacturer: syz usb 6-1: SerialNumber: syz usb 6-1: config 0 descriptor?? option 6-1:0.0: GSM modem (1-port) converter detected usb 1-1: USB disconnect, device number 40 usb 1-1: ath9k_htc: USB layer deinitialized usb 1-1: new high-speed USB device number 41 using dummy_hcd usb 1-1: config 1 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 0 usb 1-1: New USB device found, idVendor=0525, idProduct=a4a8, bcdDevice= 0.40 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3