[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 14.822411][ C1] random: crng init done [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.188' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.688997][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 24.928928][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 25.049230][ T83] usb 1-1: config 0 has an invalid interface number: 141 but max is 0 [ 25.057485][ T83] usb 1-1: config 0 has no interface number 0 [ 25.063629][ T83] usb 1-1: New USB device found, idVendor=1164, idProduct=0602, bcdDevice=9c.ec [ 25.072663][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 25.082003][ T83] usb 1-1: config 0 descriptor?? [ 25.121263][ T83] pvrusb2: Hardware description: Gotview USB 2.0 DVD Deluxe executing program [ 25.329787][ T103] pvrusb2: Invalid write control endpoint [ 25.330482][ T83] usb 1-1: USB disconnect, device number 2 [ 25.347143][ T103] pvrusb2: Invalid write control endpoint [ 25.353011][ T103] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 25.362477][ T103] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 25.370028][ T103] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 25.379999][ T103] pvrusb2: Device being rendered inoperable [ 25.386236][ T103] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 25.393568][ T103] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 25.402860][ T103] pvrusb2: Attached sub-driver cx25840 [ 25.414080][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 25.422158][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 25.430150][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 25.438115][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 25.446108][ T103] pvrusb2: Module ID 4 (tuner) for device Gotview USB 2.0 DVD Deluxe failed to load. Possible missing sub-device kernel module or initialization failure within module. [ 25.467493][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 25.476104][ T103] tda9887 0-0043: creating new instance [ 25.482055][ T103] tda9887 0-0043: tda988[5/6/7] found [ 25.487419][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 25.495413][ T103] tda9887 0-0043: i2c i/o error: rc == -5 (should be 4) [ 25.502359][ T103] tuner: 0-0043: Tuner 74 found with type(s) Radio TV. [ 25.509426][ T103] pvrusb2: Attached sub-driver tuner [ 25.514704][ T103] pvrusb2: ***WARNING*** pvrusb2 driver initialization failed due to the failure of one or more sub-device kernel modules. [ 25.527579][ T103] 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. [ 25.549809][ T103] ------------[ cut here ]------------ [ 25.555299][ T103] sysfs group 'power' not found for kobject '0-0043' [ 25.562117][ T103] WARNING: CPU: 0 PID: 103 at fs/sysfs/group.c:278 sysfs_remove_group+0x155/0x1b0 [ 25.571291][ T103] Kernel panic - not syncing: panic_on_warn set ... [ 25.577941][ T103] CPU: 0 PID: 103 Comm: pvrusb2-context Not tainted 5.4.0-rc6+ #0 [ 25.585728][ T103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.595785][ T103] Call Trace: [ 25.599061][ T103] dump_stack+0xca/0x13e [ 25.603282][ T103] ? sysfs_remove_group+0xe0/0x1b0 [ 25.608370][ T103] panic+0x2aa/0x6e1 [ 25.612243][ T103] ? add_taint.cold+0x16/0x16 [ 25.616898][ T103] ? __probe_kernel_read+0x188/0x1d0 [ 25.622157][ T103] ? __warn.cold+0x14/0x33 [ 25.626549][ T103] ? __warn+0xd5/0x1d0 [ 25.630592][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 25.635773][ T103] __warn.cold+0x2f/0x33 [ 25.639990][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 25.645160][ T103] report_bug+0x27b/0x2f0 [ 25.649467][ T103] do_error_trap+0x12b/0x1e0 [ 25.654051][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 25.659223][ T103] do_invalid_op+0x32/0x40 [ 25.663625][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 25.668815][ T103] invalid_op+0x23/0x30 [ 25.672957][ T103] RIP: 0010:sysfs_remove_group+0x155/0x1b0 [ 25.678740][ T103] 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 a0 d0 85 e8 20 f0 89 ff <0f> 0b eb 95 e8 a2 9a db ff e9 d2 fe ff ff 48 89 df e8 95 9a db ff [ 25.698327][ T103] RSP: 0018:ffff8881d4e17b90 EFLAGS: 00010282 [ 25.704369][ T103] RAX: 0000000000000000 RBX: ffffffff85f2c9e0 RCX: 0000000000000000 [ 25.712321][ T103] RDX: 0000000000000000 RSI: ffffffff8128c9cd RDI: ffffed103a9c2f64 [ 25.720271][ T103] RBP: 0000000000000000 R08: ffff8881d4e08000 R09: 0000000000000000 [ 25.728221][ T103] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881c66c7020 [ 25.736171][ T103] R13: ffffffff85f2cf80 R14: 1ffff1103a9c2f98 R15: dffffc0000000000 [ 25.744131][ T103] ? vprintk_func+0x7d/0x113 [ 25.748702][ T103] ? __unregister_dummy+0x80/0x80 [ 25.753740][ T103] dpm_sysfs_remove+0x97/0xb0 [ 25.758919][ T103] device_del+0x12a/0xb20 [ 25.763236][ T103] ? kfree+0xe4/0x320 [ 25.767201][ T103] ? __device_link_del+0x2f0/0x2f0 [ 25.772293][ T103] ? kobject_put+0x18c/0x280 [ 25.776866][ T103] ? __device_link_free_srcu+0x110/0x110 [ 25.782476][ T103] ? klist_children_put+0x41/0x50 [ 25.787500][ T103] ? __unregister_dummy+0x80/0x80 [ 25.793206][ T103] device_unregister+0x11/0x30 [ 25.797958][ T103] __unregister_client+0x8b/0xa0 [ 25.802883][ T103] device_for_each_child+0xf9/0x170 [ 25.808058][ T103] ? device_remove_class_symlinks+0x210/0x210 [ 25.814098][ T103] ? __radix_tree_lookup+0x1ed/0x260 [ 25.819356][ T103] i2c_del_adapter+0x2e2/0x590 [ 25.824185][ T103] pvr2_i2c_core_done+0x69/0xb6 [ 25.829026][ T103] pvr2_hdw_destroy+0x179/0x370 [ 25.833852][ T103] pvr2_context_destroy+0x84/0x230 [ 25.838938][ T103] pvr2_context_thread_func+0x657/0x860 [ 25.844469][ T103] ? lock_acquire+0x127/0x320 [ 25.849123][ T103] ? pvr2_context_destroy+0x230/0x230 [ 25.854469][ T103] ? finish_wait+0x260/0x260 [ 25.859034][ T103] ? lockdep_hardirqs_on+0x382/0x580 [ 25.864293][ T103] ? __kthread_parkme+0x10a/0x1c0 [ 25.869302][ T103] ? pvr2_context_destroy+0x230/0x230 [ 25.874659][ T103] kthread+0x318/0x420 [ 25.878715][ T103] ? kthread_create_on_node+0xf0/0xf0 [ 25.884069][ T103] ret_from_fork+0x24/0x30 [ 25.889186][ T103] Kernel Offset: disabled [ 25.893539][ T103] Rebooting in 86400 seconds..