[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 14.671132][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.838027][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 28.077994][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 28.198147][ T12] usb 1-1: New USB device found, idVendor=0ccd, idProduct=0039, bcdDevice=77.39 [ 28.207254][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.216474][ T12] usb 1-1: config 0 descriptor?? [ 28.260205][ T12] pvrusb2: Hardware description: Terratec Grabster AV400 [ 28.267321][ T12] pvrusb2: ********** [ 28.271360][ T12] pvrusb2: ***WARNING*** Support for this device (Terratec Grabster AV400) is experimental. [ 28.281531][ T12] pvrusb2: Important functionality might not be entirely working. [ 28.289355][ T12] pvrusb2: Please consider contacting the driver author to help with further stabilization of the driver. [ 28.300684][ T12] pvrusb2: ********** executing program [ 28.468336][ T102] pvrusb2: Invalid write control endpoint [ 28.469684][ T12] usb 1-1: USB disconnect, device number 2 [ 28.485663][ T102] pvrusb2: Invalid write control endpoint [ 28.491689][ T102] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 28.501133][ T102] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 28.508728][ T102] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 28.518705][ T102] pvrusb2: Device being rendered inoperable [ 28.524961][ T102] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 28.532235][ T102] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 28.540947][ T102] pvrusb2: Attached sub-driver cx25840 [ 28.546455][ T102] pvrusb2: ***WARNING*** pvrusb2 device hardware appears to be jammed and I can't clear it. [ 28.556556][ T102] pvrusb2: You might need to power cycle the pvrusb2 device in order to recover. [ 28.570591][ T102] ------------[ cut here ]------------ [ 28.576073][ T102] sysfs group 'power' not found for kobject 'i2c-0' [ 28.582760][ T102] WARNING: CPU: 0 PID: 102 at fs/sysfs/group.c:278 sysfs_remove_group+0x155/0x1b0 [ 28.591944][ T102] Kernel panic - not syncing: panic_on_warn set ... [ 28.598514][ T102] CPU: 0 PID: 102 Comm: pvrusb2-context Not tainted 5.4.0-rc3+ #0 [ 28.606463][ T102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.616499][ T102] Call Trace: [ 28.619785][ T102] dump_stack+0xca/0x13e [ 28.624021][ T102] ? sysfs_remove_group+0x120/0x1b0 [ 28.629236][ T102] panic+0x2aa/0x6e1 [ 28.633108][ T102] ? add_taint.cold+0x16/0x16 [ 28.637762][ T102] ? __probe_kernel_read+0x188/0x1d0 [ 28.643183][ T102] ? __warn.cold+0x14/0x33 [ 28.647671][ T102] ? __warn+0xd5/0x1d0 [ 28.651734][ T102] ? sysfs_remove_group+0x155/0x1b0 [ 28.656926][ T102] __warn.cold+0x2f/0x33 [ 28.661160][ T102] ? sysfs_remove_group+0x155/0x1b0 [ 28.666349][ T102] report_bug+0x27b/0x2f0 [ 28.670660][ T102] do_error_trap+0x12b/0x1e0 [ 28.675226][ T102] ? sysfs_remove_group+0x155/0x1b0 [ 28.680414][ T102] do_invalid_op+0x32/0x40 [ 28.684870][ T102] ? sysfs_remove_group+0x155/0x1b0 [ 28.690071][ T102] invalid_op+0x23/0x30 [ 28.694279][ T102] RIP: 0010:sysfs_remove_group+0x155/0x1b0 [ 28.700223][ T102] 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 41 48 8b 33 48 c7 c7 e0 9d d0 85 e8 60 06 8a ff <0f> 0b eb 95 e8 92 9f db ff e9 d2 fe ff ff 48 89 df e8 85 9f db ff [ 28.719814][ T102] RSP: 0018:ffff8881d4e07c40 EFLAGS: 00010282 [ 28.725869][ T102] RAX: 0000000000000000 RBX: ffffffff85f2c9c0 RCX: 0000000000000000 [ 28.733817][ T102] RDX: 0000000000000000 RSI: ffffffff8128bcbd RDI: ffffed103a9c0f7a [ 28.741765][ T102] RBP: 0000000000000000 R08: ffff8881d5b99800 R09: 0000000000000000 [ 28.749725][ T102] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881cfdac338 [ 28.757685][ T102] R13: ffffffff85f2cf60 R14: ffff8881cfdac900 R15: ffff8881d5b99800 [ 28.765650][ T102] ? vprintk_func+0x7d/0x113 [ 28.770241][ T102] dpm_sysfs_remove+0x97/0xb0 [ 28.774895][ T102] device_del+0x12a/0xb20 [ 28.779201][ T102] ? __pm_runtime_disable+0x148/0x3d0 [ 28.784547][ T102] ? __device_link_del+0x2f0/0x2f0 [ 28.789654][ T102] ? pm_runtime_barrier+0x260/0x260 [ 28.794836][ T102] ? lockdep_init_map+0x1b0/0x5e0 [ 28.799835][ T102] ? lockdep_init_map+0x1b0/0x5e0 [ 28.804842][ T102] device_unregister+0x11/0x30 [ 28.809584][ T102] i2c_del_adapter+0x42b/0x590 [ 28.814336][ T102] ? del_timer_sync+0x11a/0x140 [ 28.819163][ T102] pvr2_i2c_core_done+0x69/0xb6 [ 28.824656][ T102] pvr2_hdw_destroy+0x179/0x370 [ 28.829493][ T102] pvr2_context_destroy+0x84/0x230 [ 28.834581][ T102] pvr2_context_thread_func+0x657/0x860 [ 28.840128][ T102] ? lock_acquire+0x127/0x320 [ 28.844782][ T102] ? pvr2_context_destroy+0x230/0x230 [ 28.850132][ T102] ? finish_wait+0x260/0x260 [ 28.854701][ T102] ? lockdep_hardirqs_on+0x382/0x580 [ 28.859963][ T102] ? __kthread_parkme+0x10a/0x1c0 [ 28.864998][ T102] ? pvr2_context_destroy+0x230/0x230 [ 28.870374][ T102] kthread+0x318/0x420 [ 28.874437][ T102] ? kthread_create_on_node+0xf0/0xf0 [ 28.879817][ T102] ret_from_fork+0x24/0x30 [ 28.884956][ T102] Kernel Offset: disabled [ 28.889327][ T102] Rebooting in 86400 seconds..