[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.239' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.322021][ T2220] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 42.571358][ T2220] usb 1-1: Using ep0 maxpacket: 16 [ 42.691507][ T2220] usb 1-1: config 0 has an invalid interface number: 121 but max is 0 [ 42.699760][ T2220] usb 1-1: config 0 has no interface number 0 [ 42.706905][ T2220] usb 1-1: config 0 interface 121 altsetting 0 has a duplicate endpoint with address 0xF, skipping [ 42.871472][ T2220] usb 1-1: New USB device found, idVendor=1164, idProduct=0622, bcdDevice=8e.9f [ 42.880513][ T2220] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 42.888557][ T2220] usb 1-1: Product: syz [ 42.892770][ T2220] usb 1-1: Manufacturer: syz [ 42.897345][ T2220] usb 1-1: SerialNumber: syz [ 42.904973][ T2220] usb 1-1: config 0 descriptor?? [ 42.946590][ T2220] pvrusb2: Hardware description: Gotview USB 2.0 DVD 2 executing program [ 43.154369][ T2368] pvrusb2: Invalid write control endpoint [ 43.162671][ T2220] usb 1-1: USB disconnect, device number 2 [ 43.196170][ T2368] pvrusb2: Invalid write control endpoint [ 43.202230][ T2368] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 43.211681][ T2368] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 43.219217][ T2368] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 43.229232][ T2368] pvrusb2: Device being rendered inoperable [ 43.235600][ T2368] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 43.243790][ T2368] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 43.253760][ T2368] pvrusb2: Attached sub-driver cx25840 [ 43.264400][ T2368] pvrusb2: Attempted to execute control transfer when device not ok [ 43.272518][ T2368] pvrusb2: Attempted to execute control transfer when device not ok [ 43.280506][ T2368] pvrusb2: Attempted to execute control transfer when device not ok [ 43.288551][ T2368] pvrusb2: Attempted to execute control transfer when device not ok [ 43.296640][ T2368] pvrusb2: Module ID 4 (tuner) for device Gotview USB 2.0 DVD 2 failed to load. Possible missing sub-device kernel module or initialization failure within module. [ 43.325996][ T2368] TUNER: Unable to find symbol tda829x_probe() [ 43.339109][ T2368] DVB: Unable to find symbol tda9887_attach() [ 43.345287][ T2368] tuner: 0-0043: Tuner 4 found with type(s) Radio TV. [ 43.353291][ T2368] pvrusb2: Attached sub-driver tuner [ 43.358605][ T2368] pvrusb2: ***WARNING*** pvrusb2 driver initialization failed due to the failure of one or more sub-device kernel modules. [ 43.371578][ T2368] pvrusb2: You need to resolve the failing condition before this driver can function. There should be some earlier messages giving more information about the problem. [ 43.397741][ T2368] ------------[ cut here ]------------ [ 43.403360][ T2368] sysfs group 'power' not found for kobject '0-0043' [ 43.410154][ T2368] WARNING: CPU: 1 PID: 2368 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 [ 43.419485][ T2368] Modules linked in: [ 43.423507][ T2368] CPU: 1 PID: 2368 Comm: pvrusb2-context Not tainted 5.10.0-rc1-syzkaller #0 [ 43.432365][ T2368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.442474][ T2368] RIP: 0010:sysfs_remove_group+0x126/0x170 [ 43.448261][ T2368] Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 37 48 8b 33 48 c7 c7 e0 50 f2 85 e8 23 27 e0 03 <0f> 0b eb 98 e8 21 ae d6 ff e9 01 ff ff ff 48 89 df e8 14 ae d6 ff [ 43.468629][ T2368] RSP: 0018:ffffc90006037b80 EFLAGS: 00010286 [ 43.474768][ T2368] RAX: 0000000000000000 RBX: ffffffff861badc0 RCX: 0000000000000000 [ 43.482795][ T2368] RDX: ffff888109828000 RSI: ffffffff8128fcd3 RDI: fffff52000c06f62 [ 43.490779][ T2368] RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8881f6b1febb [ 43.498814][ T2368] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888101de6020 [ 43.506823][ T2368] R13: ffffffff861bb360 R14: 1ffff92000c06f98 R15: dffffc0000000000 [ 43.514833][ T2368] FS: 0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000 [ 43.523916][ T2368] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.530490][ T2368] CR2: 000055b947c49030 CR3: 0000000108039000 CR4: 00000000001506e0 [ 43.538489][ T2368] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.546507][ T2368] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.554524][ T2368] Call Trace: [ 43.557827][ T2368] ? i2c_adapter_lock_bus+0x130/0x130 [ 43.563229][ T2368] dpm_sysfs_remove+0x97/0xb0 [ 43.567904][ T2368] device_del+0x20c/0xec0 [ 43.572259][ T2368] ? device_link_add_missing_supplier_links+0x370/0x370 [ 43.579191][ T2368] ? kobject_put+0x1f3/0x540 [ 43.583830][ T2368] ? __device_link_free_srcu+0x120/0x120 [ 43.589547][ T2368] ? i2c_adapter_lock_bus+0x130/0x130 [ 43.594945][ T2368] device_unregister+0x22/0xc0 [ 43.599709][ T2368] ? i2c_adapter_lock_bus+0x130/0x130 [ 43.605105][ T2368] __unregister_client+0x95/0xa0 [ 43.610072][ T2368] device_for_each_child+0xf9/0x170 [ 43.615314][ T2368] ? device_remove_class_symlinks+0x210/0x210 [ 43.621454][ T2368] i2c_del_adapter+0x37b/0x680 [ 43.626201][ T2368] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 43.632219][ T2368] pvr2_i2c_core_done+0x69/0xc0 [ 43.637067][ T2368] pvr2_hdw_destroy+0x179/0x3b0 [ 43.641944][ T2368] pvr2_context_destroy+0x84/0x230 [ 43.647051][ T2368] pvr2_context_thread_func+0x64b/0x850 [ 43.652622][ T2368] ? pvr2_context_destroy+0x230/0x230 [ 43.658016][ T2368] ? add_wait_queue_exclusive+0x180/0x180 [ 43.663761][ T2368] ? __kthread_parkme+0x118/0x1d0 [ 43.668783][ T2368] ? pvr2_context_destroy+0x230/0x230 [ 43.674201][ T2368] kthread+0x38c/0x460 [ 43.678279][ T2368] ? _raw_spin_unlock_irq+0x1f/0x30 [ 43.683505][ T2368] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 43.689483][ T2368] ret_from_fork+0x1f/0x30 [ 43.693922][ T2368] Kernel panic - not syncing: panic_on_warn set ... [ 43.700497][ T2368] CPU: 1 PID: 2368 Comm: pvrusb2-context Not tainted 5.10.0-rc1-syzkaller #0 [ 43.709226][ T2368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.719271][ T2368] Call Trace: [ 43.722545][ T2368] dump_stack+0x107/0x163 [ 43.726855][ T2368] panic+0x306/0x73d [ 43.730742][ T2368] ? __warn_printk+0xf3/0xf3 [ 43.735310][ T2368] ? __warn.cold+0x1d/0xbb [ 43.739705][ T2368] ? __warn.cold+0x14/0xbb [ 43.741138][ T2220] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 43.744106][ T2368] ? sysfs_remove_group+0x126/0x170 [ 43.744118][ T2368] __warn.cold+0x38/0xbb [ 43.744138][ T2368] ? irq_work_queue+0x44/0x50 [ 43.765736][ T2368] ? sysfs_remove_group+0x126/0x170 [ 43.770933][ T2368] report_bug+0x1bd/0x210 [ 43.775244][ T2368] handle_bug+0x3c/0x60 [ 43.779376][ T2368] exc_invalid_op+0x14/0x40 [ 43.783870][ T2368] asm_exc_invalid_op+0x12/0x20 [ 43.788697][ T2368] RIP: 0010:sysfs_remove_group+0x126/0x170 [ 43.794482][ T2368] Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 37 48 8b 33 48 c7 c7 e0 50 f2 85 e8 23 27 e0 03 <0f> 0b eb 98 e8 21 ae d6 ff e9 01 ff ff ff 48 89 df e8 14 ae d6 ff [ 43.814064][ T2368] RSP: 0018:ffffc90006037b80 EFLAGS: 00010286 [ 43.820119][ T2368] RAX: 0000000000000000 RBX: ffffffff861badc0 RCX: 0000000000000000 [ 43.828067][ T2368] RDX: ffff888109828000 RSI: ffffffff8128fcd3 RDI: fffff52000c06f62 [ 43.836020][ T2368] RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8881f6b1febb [ 43.843983][ T2368] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888101de6020 [ 43.851932][ T2368] R13: ffffffff861bb360 R14: 1ffff92000c06f98 R15: dffffc0000000000 [ 43.859903][ T2368] ? vprintk_func+0x93/0x140 [ 43.864475][ T2368] ? i2c_adapter_lock_bus+0x130/0x130 [ 43.869833][ T2368] dpm_sysfs_remove+0x97/0xb0 [ 43.874497][ T2368] device_del+0x20c/0xec0 [ 43.878820][ T2368] ? device_link_add_missing_supplier_links+0x370/0x370 [ 43.885730][ T2368] ? kobject_put+0x1f3/0x540 [ 43.890321][ T2368] ? __device_link_free_srcu+0x120/0x120 [ 43.895933][ T2368] ? i2c_adapter_lock_bus+0x130/0x130 [ 43.901297][ T2368] device_unregister+0x22/0xc0 [ 43.906039][ T2368] ? i2c_adapter_lock_bus+0x130/0x130 [ 43.911386][ T2368] __unregister_client+0x95/0xa0 [ 43.916304][ T2368] device_for_each_child+0xf9/0x170 [ 43.921480][ T2368] ? device_remove_class_symlinks+0x210/0x210 [ 43.927543][ T2368] i2c_del_adapter+0x37b/0x680 [ 43.932288][ T2368] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 43.938245][ T2368] pvr2_i2c_core_done+0x69/0xc0 [ 43.943070][ T2368] pvr2_hdw_destroy+0x179/0x3b0 [ 43.947902][ T2368] pvr2_context_destroy+0x84/0x230 [ 43.953006][ T2368] pvr2_context_thread_func+0x64b/0x850 [ 43.958527][ T2368] ? pvr2_context_destroy+0x230/0x230 [ 43.963876][ T2368] ? add_wait_queue_exclusive+0x180/0x180 [ 43.969573][ T2368] ? __kthread_parkme+0x118/0x1d0 [ 43.974573][ T2368] ? pvr2_context_destroy+0x230/0x230 [ 43.979923][ T2368] kthread+0x38c/0x460 [ 43.983971][ T2368] ? _raw_spin_unlock_irq+0x1f/0x30 [ 43.989144][ T2368] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 43.991097][ T2220] usb 1-1: Using ep0 maxpacket: 16 [ 43.995014][ T2368] ret_from_fork+0x1f/0x30 [ 44.000690][ T2368] Kernel Offset: disabled [ 44.009390][ T2368] Rebooting in 86400 seconds..