rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2688 jiffies s: 3617 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: cdc_wdm 3-1:1.0: nonzero urb status received: -71 NMI backtrace for cpu 1 CPU: 1 PID: 31189 Comm: syz-executor.1 Not tainted 6.7.0-rc5-syzkaller-00166-g79c58ab241be #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:number+0x8fa/0xb80 lib/vsprintf.c:575 Code: 08 48 01 c3 e8 e7 8b 0a fb 48 8b 4c 24 20 48 b8 00 00 00 00 00 fc ff df 48 01 c1 48 c7 01 00 00 00 00 48 c7 41 08 00 00 00 00 <48> 8b 84 24 e8 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 65 02 00 RSP: 0018:ffffc90000197f48 EFLAGS: 00000086 RAX: dffffc0000000000 RBX: ffffc9000019832e RCX: fffff52000032ff3 RDX: 0000000000040000 RSI: ffffffff86436709 RDI: 0000000000000005 RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffffd R11: 00000000004e8e30 R12: 00000000fffffffd R13: ffffc90000197fd7 R14: ffffc90080198327 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f1a4930008 CR3: 0000000007c9c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vsnprintf+0x905/0x1870 lib/vsprintf.c:2885 sprintf+0xcd/0x100 lib/vsprintf.c:3023 print_time kernel/printk/printk.c:1324 [inline] info_print_prefix+0x258/0x350 kernel/printk/printk.c:1350 record_print_text+0x143/0x410 kernel/printk/printk.c:1399 printk_get_next_message+0x2ce/0x7c0 kernel/printk/printk.c:2828 console_emit_next_record kernel/printk/printk.c:2868 [inline] console_flush_all+0x3b0/0xd50 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_cmp8+0x0/0x20 kernel/kcov.c:310 Code: ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 aa fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 07 00 00 00 e9 88 fe RSP: 0018:ffffc9000e4a75f8 EFLAGS: 00000246 RAX: 0000160000000000 RBX: 000000000011e9b1 RCX: ffffffff819f6bbe RDX: ffff88811cbe8000 RSI: 0000000000000023 RDI: 000000000007ffff RBP: 0000000000000023 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88823fff1460 R13: 0000000000000000 R14: ffffea00047a6c48 R15: 00007fc4cbf3c000 __nr_to_section include/linux/mmzone.h:1858 [inline] __pfn_to_section include/linux/mmzone.h:1970 [inline] lookup_page_ext mm/page_ext.c:237 [inline] page_ext_get+0x84/0x310 mm/page_ext.c:509 page_table_check_clear mm/page_table_check.c:72 [inline] page_table_check_clear+0x1b1/0x9a0 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: 0033:0x7fc4cc711a4b Code: Unable to access opcode bytes at 0x7fc4cc711a21. RSP: 002b:00007fc4cba91ff0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007fc4cc711a4b RDX: 00007fc4cba93080 RSI: 0000000080085502 RDI: 0000000000000003 RBP: 00007fc4cc75e47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc4cc830f80 R15: 00007ffc01f0b5d8 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes imon 2-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes usb 2-1: new high-speed USB device number 123 using dummy_hcd usb 2-1: Using ep0 maxpacket: 16 usb 2-1: config 0 interface 0 altsetting 3 endpoint 0x8B has an invalid bInterval 0, changing to 7 usb 2-1: config 0 interface 0 has no altsetting 0 usb 2-1: New USB device found, idVendor=15c2, idProduct=0040, bcdDevice= 7.f3 usb 2-1: New USB device strings: Mfr=1, Product=130, SerialNumber=3 usb 2-1: Product: syz usb 2-1: Manufacturer: syz usb 2-1: SerialNumber: syz usb 2-1: config 0 descriptor?? input: iMON Panel, Knob and Mouse(15c2:0040) as /devices/platform/dummy_hcd.1/usb2/2-1/2-1:0.0/input/input119 imon:send_packet: packet tx failed (-71) imon 2-1:0.0: panel buttons/knobs setup failed rc_core: IR keymap rc-imon-pad not found Registered IR keymap rc-empty imon 2-1:0.0: Looks like you're trying to use an IR protocol this device does not support imon 2-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol imon:send_packet: packet tx failed (-71) imon 2-1:0.0: remote input dev register failed imon 2-1:0.0: imon_init_intf0: rc device setup failed imon 2-1:0.0: unable to initialize intf0, err 0 imon:imon_probe: failed to initialize context! imon 2-1:0.0: unable to register, err -19 usb 2-1: USB disconnect, device number 123 usb 3-1: new high-speed USB device number 72 using dummy_hcd usb 3-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config usb 3-1: config 0 has 0 interfaces, different from the descriptor's value: 1 usb 3-1: New USB device found, idVendor=047f, idProduct=ffff, bcdDevice= 0.00 usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 3-1: config 0 descriptor?? usb 3-1: USB disconnect, device number 72 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usbtmc 2-1:16.0: usbtmc_write_bulk_cb - nonzero write bulk status received: -71 usb 6-1: new high-speed USB device number 113 using dummy_hcd usb 6-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 usb 6-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 usb 6-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 23 usb 6-1: New USB device found, idVendor=047f, idProduct=ffff, bcdDevice= 0.00 usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 6-1: config 0 descriptor?? plantronics 0003:047F:FFFF.085F: unknown main item tag 0x0 plantronics 0003:047F:FFFF.085F: No inputs registered, leaving plantronics 0003:047F:FFFF.085F: hiddev0,hidraw0: USB HID v0.23 Device [HID 047f:ffff] on usb-dummy_hcd.5-1/input0 usb 3-1: OVERFLOW with data length 2, actual length is 2