[ 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 syzkaller login: [ 32.607483][ T4357] bash (4357) used greatest stack depth: 23592 bytes left Warning: Permanently added '10.128.0.10' (ECDSA) to the list of known hosts. executing program [ 48.021519][ T32] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 48.541543][ T32] usb 1-1: New USB device found, idVendor=0ccd, idProduct=0039, bcdDevice= 8.42 [ 48.550767][ T32] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 48.558877][ T32] usb 1-1: Product: syz [ 48.563120][ T32] usb 1-1: Manufacturer: syz [ 48.567810][ T32] usb 1-1: SerialNumber: syz [ 48.575611][ T32] usb 1-1: config 0 descriptor?? [ 48.634977][ T32] pvrusb2: Hardware description: Terratec Grabster AV400 [ 48.642186][ T32] pvrusb2: ********** [ 48.646190][ T32] pvrusb2: ***WARNING*** Support for this device (Terratec Grabster AV400) is experimental. [ 48.656347][ T32] pvrusb2: Important functionality might not be entirely working. [ 48.664226][ T32] pvrusb2: Please consider contacting the driver author to help with further stabilization of the driver. [ 48.675677][ T32] pvrusb2: ********** executing program [ 48.861966][ T2389] pvrusb2: Invalid write control endpoint [ 48.863976][ T32] usb 1-1: USB disconnect, device number 2 [ 48.930190][ T2389] pvrusb2: Invalid write control endpoint [ 48.936556][ T2389] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 48.946094][ T2389] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 48.953725][ T2389] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 48.963794][ T2389] pvrusb2: Device being rendered inoperable [ 48.970584][ T2389] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 48.977978][ T2389] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 48.988090][ T2389] pvrusb2: Attached sub-driver cx25840 [ 48.993783][ T2389] pvrusb2: ***WARNING*** pvrusb2 device hardware appears to be jammed and I can't clear it. [ 49.004030][ T2389] pvrusb2: You might need to power cycle the pvrusb2 device in order to recover. [ 49.371234][ T32] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 49.891308][ T32] usb 1-1: New USB device found, idVendor=0ccd, idProduct=0039, bcdDevice= 8.42 [ 49.900501][ T32] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 49.908585][ T32] usb 1-1: Product: syz [ 49.912847][ T32] usb 1-1: Manufacturer: syz [ 49.917450][ T32] usb 1-1: SerialNumber: syz [ 49.924124][ T32] usb 1-1: config 0 descriptor?? [ 49.963673][ T32] pvrusb2: Hardware description: Terratec Grabster AV400 [ 49.970782][ T32] pvrusb2: ********** [ 49.974887][ T32] pvrusb2: ***WARNING*** Support for this device (Terratec Grabster AV400) is experimental. [ 49.985042][ T32] pvrusb2: Important functionality might not be entirely working. [ 49.993123][ T32] pvrusb2: Please consider contacting the driver author to help with further stabilization of the driver. [ 50.004653][ T32] pvrusb2: ********** executing program [ 50.202327][ T2389] pvrusb2: Invalid write control endpoint [ 50.212109][ T32] usb 1-1: USB disconnect, device number 3 [ 50.234712][ T2389] pvrusb2: Invalid write control endpoint [ 50.240519][ T2389] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 50.249952][ T2389] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 50.257579][ T2389] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 50.267870][ T2389] pvrusb2: Device being rendered inoperable [ 50.274220][ T2389] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 50.281694][ T2389] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 50.290397][ T2389] pvrusb2: Attached sub-driver cx25840 [ 50.296124][ T2389] pvrusb2: ***WARNING*** pvrusb2 device hardware appears to be jammed and I can't clear it. [ 50.306274][ T2389] pvrusb2: You might need to power cycle the pvrusb2 device in order to recover. [ 50.670966][ T32] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 51.200893][ T32] usb 1-1: New USB device found, idVendor=0ccd, idProduct=0039, bcdDevice= 8.42 [ 51.210098][ T32] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 51.218177][ T32] usb 1-1: Product: syz [ 51.222432][ T32] usb 1-1: Manufacturer: syz [ 51.227042][ T32] usb 1-1: SerialNumber: syz [ 51.237946][ T32] usb 1-1: config 0 descriptor?? [ 51.293037][ T32] pvrusb2: Hardware description: Terratec Grabster AV400 [ 51.300270][ T32] pvrusb2: ********** [ 51.304374][ T32] pvrusb2: ***WARNING*** Support for this device (Terratec Grabster AV400) is experimental. [ 51.314521][ T32] pvrusb2: Important functionality might not be entirely working. [ 51.322437][ T32] pvrusb2: Please consider contacting the driver author to help with further stabilization of the driver. [ 51.333979][ T32] pvrusb2: ********** executing program [ 51.510991][ T2389] pvrusb2: Invalid write control endpoint [ 51.512026][ T32] usb 1-1: USB disconnect, device number 4 [ 51.536436][ T2389] pvrusb2: Invalid write control endpoint [ 51.542342][ T2389] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 51.551797][ T2389] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 51.559355][ T2389] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 51.569383][ T2389] pvrusb2: Device being rendered inoperable [ 51.577985][ T2389] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 51.585313][ T2389] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 51.594019][ T2389] pvrusb2: Attached sub-driver cx25840 [ 51.599513][ T2389] pvrusb2: ***WARNING*** pvrusb2 device hardware appears to be jammed and I can't clear it. [ 51.610548][ T2389] pvrusb2: You might need to power cycle the pvrusb2 device in order to recover. [ 51.623803][ T2389] ------------[ cut here ]------------ [ 51.629285][ T2389] sysfs group 'power' not found for kobject '0-0044' [ 51.636185][ T2389] WARNING: CPU: 1 PID: 2389 at fs/sysfs/group.c:279 sysfs_remove_group+0x126/0x170 [ 51.645575][ T2389] Modules linked in: [ 51.649495][ T2389] CPU: 1 PID: 2389 Comm: pvrusb2-context Not tainted 5.12.0-rc4-syzkaller #0 [ 51.658311][ T2389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.668452][ T2389] RIP: 0010:sysfs_remove_group+0x126/0x170 [ 51.674385][ T2389] 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 a0 db 12 86 e8 eb e8 eb 03 <0f> 0b eb 98 e8 b1 8c d5 ff e9 01 ff ff ff 48 89 df e8 a4 8c d5 ff [ 51.694092][ T2389] RSP: 0018:ffffc90006557b80 EFLAGS: 00010286 [ 51.700182][ T2389] RAX: 0000000000000000 RBX: ffffffff863d7960 RCX: 0000000000000000 [ 51.708225][ T2389] RDX: ffff888109a71b40 RSI: ffffffff8129fa03 RDI: fffff52000caaf62 [ 51.716289][ T2389] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 51.724346][ T2389] R10: ffffffff814ab91b R11: 0000000000000000 R12: ffff888101d3b020 [ 51.732404][ T2389] R13: ffffffff863d7f00 R14: 1ffff92000caaf98 R15: dffffc0000000000 [ 51.740407][ T2389] FS: 0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000 [ 51.749415][ T2389] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.756200][ T2389] CR2: 00007fffc5ebafa8 CR3: 0000000108dc8000 CR4: 00000000001506e0 [ 51.766103][ T2389] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.774167][ T2389] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.782207][ T2389] Call Trace: [ 51.785504][ T2389] ? i2c_adapter_lock_bus+0x130/0x130 [ 51.790946][ T2389] dpm_sysfs_remove+0x97/0xb0 [ 51.795668][ T2389] device_del+0x20c/0xd40 [ 51.800000][ T2389] ? __device_links_queue_sync_state+0x3f0/0x3f0 [ 51.806398][ T2389] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 51.812509][ T2389] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 51.818333][ T2389] ? trace_hardirqs_on+0x5b/0x1a0 [ 51.823409][ T2389] ? i2c_adapter_lock_bus+0x130/0x130 [ 51.828829][ T2389] device_unregister+0x22/0xc0 [ 51.833664][ T2389] ? i2c_adapter_lock_bus+0x130/0x130 [ 51.839057][ T2389] __unregister_client+0x95/0xa0 [ 51.844050][ T2389] device_for_each_child+0xf9/0x170 [ 51.849271][ T2389] ? device_remove_class_symlinks+0x210/0x210 [ 51.855393][ T2389] ? __radix_tree_lookup+0x211/0x2a0 [ 51.860764][ T2389] i2c_del_adapter+0x37b/0x680 [ 51.865572][ T2389] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 51.871691][ T2389] pvr2_i2c_core_done+0x69/0xc0 [ 51.876567][ T2389] pvr2_hdw_destroy+0x179/0x3b0 [ 51.881478][ T2389] pvr2_context_destroy+0x84/0x230 [ 51.886648][ T2389] pvr2_context_thread_func+0x64b/0x850 [ 51.892276][ T2389] ? pvr2_context_destroy+0x230/0x230 [ 51.897678][ T2389] ? finish_wait+0x260/0x260 [ 51.902355][ T2389] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 51.908648][ T2389] ? __kthread_parkme+0x118/0x1d0 [ 51.913729][ T2389] ? pvr2_context_destroy+0x230/0x230 [ 51.919126][ T2389] kthread+0x38c/0x460 [ 51.923258][ T2389] ? _raw_spin_unlock_irq+0x1f/0x30 [ 51.928482][ T2389] ? __kthread_bind_mask+0xc0/0xc0 [ 51.933681][ T2389] ret_from_fork+0x1f/0x30 [ 51.938134][ T2389] Kernel panic - not syncing: panic_on_warn set ... [ 51.944707][ T2389] CPU: 1 PID: 2389 Comm: pvrusb2-context Not tainted 5.12.0-rc4-syzkaller #0 [ 51.953468][ T2389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.963554][ T2389] Call Trace: [ 51.966837][ T2389] dump_stack+0x143/0x1db [ 51.971190][ T2389] panic+0x306/0x73d [ 51.975075][ T2389] ? __warn_printk+0xf3/0xf3 [ 51.979654][ T2389] ? __warn.cold+0x1a/0x44 [ 51.984079][ T2389] ? sysfs_remove_group+0x126/0x170 [ 51.989295][ T2389] __warn.cold+0x35/0x44 [ 51.993553][ T2389] ? irq_work_queue+0x44/0x50 [ 51.998234][ T2389] ? sysfs_remove_group+0x126/0x170 [ 52.003452][ T2389] report_bug+0x1bd/0x210 [ 52.007794][ T2389] handle_bug+0x3c/0x60 [ 52.011952][ T2389] exc_invalid_op+0x14/0x40 [ 52.016465][ T2389] asm_exc_invalid_op+0x12/0x20 [ 52.021327][ T2389] RIP: 0010:sysfs_remove_group+0x126/0x170 [ 52.027285][ T2389] 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 a0 db 12 86 e8 eb e8 eb 03 <0f> 0b eb 98 e8 b1 8c d5 ff e9 01 ff ff ff 48 89 df e8 a4 8c d5 ff [ 52.046897][ T2389] RSP: 0018:ffffc90006557b80 EFLAGS: 00010286 [ 52.052978][ T2389] RAX: 0000000000000000 RBX: ffffffff863d7960 RCX: 0000000000000000 [ 52.060967][ T2389] RDX: ffff888109a71b40 RSI: ffffffff8129fa03 RDI: fffff52000caaf62 [ 52.068953][ T2389] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 52.076918][ T2389] R10: ffffffff814ab91b R11: 0000000000000000 R12: ffff888101d3b020 [ 52.084884][ T2389] R13: ffffffff863d7f00 R14: 1ffff92000caaf98 R15: dffffc0000000000 [ 52.092866][ T2389] ? __irq_work_queue_local+0xbb/0xf0 [ 52.098242][ T2389] ? vprintk_func+0x93/0x140 [ 52.102831][ T2389] ? i2c_adapter_lock_bus+0x130/0x130 [ 52.108201][ T2389] dpm_sysfs_remove+0x97/0xb0 [ 52.112880][ T2389] device_del+0x20c/0xd40 [ 52.117230][ T2389] ? __device_links_queue_sync_state+0x3f0/0x3f0 [ 52.123586][ T2389] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 52.129585][ T2389] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 52.135406][ T2389] ? trace_hardirqs_on+0x5b/0x1a0 [ 52.140440][ T2389] ? i2c_adapter_lock_bus+0x130/0x130 [ 52.145823][ T2389] device_unregister+0x22/0xc0 [ 52.150613][ T2389] ? i2c_adapter_lock_bus+0x130/0x130 [ 52.156017][ T2389] __unregister_client+0x95/0xa0 [ 52.160975][ T2389] device_for_each_child+0xf9/0x170 [ 52.166196][ T2389] ? device_remove_class_symlinks+0x210/0x210 [ 52.172402][ T2389] ? __radix_tree_lookup+0x211/0x2a0 [ 52.177732][ T2389] i2c_del_adapter+0x37b/0x680 [ 52.182536][ T2389] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 52.188538][ T2389] pvr2_i2c_core_done+0x69/0xc0 [ 52.193441][ T2389] pvr2_hdw_destroy+0x179/0x3b0 [ 52.198406][ T2389] pvr2_context_destroy+0x84/0x230 [ 52.203544][ T2389] pvr2_context_thread_func+0x64b/0x850 [ 52.209082][ T2389] ? pvr2_context_destroy+0x230/0x230 [ 52.214463][ T2389] ? finish_wait+0x260/0x260 [ 52.219046][ T2389] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 52.225286][ T2389] ? __kthread_parkme+0x118/0x1d0 [ 52.232581][ T2389] ? pvr2_context_destroy+0x230/0x230 [ 52.237980][ T2389] kthread+0x38c/0x460 [ 52.242080][ T2389] ? _raw_spin_unlock_irq+0x1f/0x30 [ 52.247275][ T2389] ? __kthread_bind_mask+0xc0/0xc0 [ 52.252383][ T2389] ret_from_fork+0x1f/0x30 [ 52.257490][ T2389] Kernel Offset: disabled [ 52.262162][ T2389] Rebooting in 86400 seconds..