[info] Using makefile-style concurrent boot in runlevel 2. [ 13.557917][ C1] random: crng init done [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.40' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.230546][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 44.320702][ T94] usb 1-1: Using ep0 maxpacket: 16 [ 44.480550][ T94] usb 1-1: unable to get BOS descriptor or descriptor too short [ 44.560657][ T94] usb 1-1: config 6 has an invalid interface number: 182 but max is 0 [ 44.568925][ T94] usb 1-1: config 6 contains an unexpected descriptor of type 0x2, skipping [ 44.577686][ T94] usb 1-1: config 6 has no interface number 0 [ 44.583810][ T94] usb 1-1: config 6 interface 182 altsetting 0 endpoint 0x2 has invalid maxpacket 1536, setting to 64 [ 44.594773][ T94] usb 1-1: config 6 interface 182 altsetting 0 endpoint 0xF has invalid maxpacket 1023, setting to 64 [ 44.605747][ T94] usb 1-1: config 6 interface 182 altsetting 0 has a duplicate endpoint with address 0xF, skipping [ 44.616435][ T94] usb 1-1: config 6 interface 182 altsetting 0 endpoint 0x5 has invalid wMaxPacketSize 0 [ 44.626303][ T94] usb 1-1: config 6 interface 182 altsetting 0 endpoint 0x83 has an invalid bInterval 64, changing to 10 [ 44.637518][ T94] usb 1-1: config 6 interface 182 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 44.648120][ T94] usb 1-1: config 6 interface 182 altsetting 0 has a duplicate endpoint with address 0x83, skipping [ 44.658892][ T94] usb 1-1: config 6 interface 182 altsetting 0 has a duplicate endpoint with address 0x7, skipping [ 44.669605][ T94] usb 1-1: config 6 interface 182 altsetting 0 endpoint 0xA has an invalid bInterval 127, changing to 7 [ 44.680723][ T94] usb 1-1: config 6 interface 182 altsetting 0 endpoint 0xB has an invalid bInterval 129, changing to 7 [ 44.691848][ T94] usb 1-1: config 6 interface 182 altsetting 0 has a duplicate endpoint with address 0x3, skipping [ 44.940586][ T94] usb 1-1: string descriptor 0 read error: -22 [ 44.946866][ T94] usb 1-1: New USB device found, idVendor=1164, idProduct=0602, bcdDevice= e.a7 [ 44.955974][ T94] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 45.003235][ T94] pvrusb2: Hardware description: Gotview USB 2.0 DVD Deluxe executing program [ 45.210883][ T103] pvrusb2: Invalid write control endpoint [ 45.221607][ T94] usb 1-1: USB disconnect, device number 2 [ 45.225162][ T103] pvrusb2: Invalid write control endpoint [ 45.233479][ T103] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 45.242941][ T103] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 45.250504][ T103] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 45.260507][ T103] pvrusb2: Device being rendered inoperable [ 45.266651][ T103] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 45.273867][ T103] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 45.283248][ T103] pvrusb2: Attached sub-driver cx25840 [ 45.292919][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 45.300980][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 45.308980][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 45.317117][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 45.325135][ 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. [ 45.346321][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 45.355152][ T103] tda9887 0-0043: creating new instance [ 45.360885][ T103] tda9887 0-0043: tda988[5/6/7] found [ 45.366240][ T103] pvrusb2: Attempted to execute control transfer when device not ok [ 45.374471][ T103] tda9887 0-0043: i2c i/o error: rc == -5 (should be 4) [ 45.381434][ T103] tuner: 0-0043: Tuner 74 found with type(s) Radio TV. [ 45.388427][ T103] pvrusb2: Attached sub-driver tuner [ 45.393762][ T103] pvrusb2: ***WARNING*** pvrusb2 driver initialization failed due to the failure of one or more sub-device kernel modules. [ 45.406522][ 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. [ 45.425432][ T103] tda9887 0-0043: destroying instance [ 45.431302][ T103] ------------[ cut here ]------------ [ 45.436780][ T103] sysfs group 'power' not found for kobject 'i2c-0' [ 45.443534][ T103] WARNING: CPU: 1 PID: 103 at fs/sysfs/group.c:278 sysfs_remove_group+0x155/0x1b0 [ 45.452715][ T103] Kernel panic - not syncing: panic_on_warn set ... [ 45.459287][ T103] CPU: 1 PID: 103 Comm: pvrusb2-context Not tainted 5.6.0-rc3-syzkaller #0 [ 45.467893][ T103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.477936][ T103] Call Trace: [ 45.481207][ T103] dump_stack+0xef/0x16e [ 45.485450][ T103] ? sysfs_remove_group+0x90/0x1b0 [ 45.490539][ T103] panic+0x2aa/0x6e1 [ 45.494416][ T103] ? add_taint.cold+0x16/0x16 [ 45.499081][ T103] ? __probe_kernel_read+0x188/0x1d0 [ 45.504348][ T103] ? __warn.cold+0x14/0x30 [ 45.508747][ T103] ? __warn+0xd5/0x1c8 [ 45.512801][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 45.517980][ T103] __warn.cold+0x2f/0x30 [ 45.522200][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 45.527378][ T103] report_bug+0x27b/0x2f0 [ 45.531685][ T103] do_error_trap+0x12b/0x1e0 [ 45.536354][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 45.541531][ T103] do_invalid_op+0x32/0x40 [ 45.545924][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 45.551104][ T103] invalid_op+0x23/0x30 [ 45.555288][ T103] RIP: 0010:sysfs_remove_group+0x155/0x1b0 [ 45.561082][ 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 20 67 f1 85 e8 d3 49 84 ff <0f> 0b eb 95 e8 f2 60 d8 ff e9 d2 fe ff ff 48 89 df e8 e5 60 d8 ff [ 45.580789][ T103] RSP: 0018:ffff8881d49cfc30 EFLAGS: 00010282 [ 45.586845][ T103] RAX: 0000000000000000 RBX: ffffffff8615f620 RCX: 0000000000000000 [ 45.594801][ T103] RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103a939f78 [ 45.602757][ T103] RBP: 0000000000000000 R08: ffff8881d49c0000 R09: 0000000000000000 [ 45.610716][ T103] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881ce6f0338 [ 45.618705][ T103] R13: ffffffff8615fbc0 R14: ffff8881ce6f0420 R15: ffff8881ce6f0900 [ 45.626680][ T103] ? vprintk_func+0x7d/0x113 [ 45.631255][ T103] dpm_sysfs_remove+0x97/0xb0 [ 45.635910][ T103] device_del+0x18b/0xd30 [ 45.640274][ T103] ? lockdep_hardirqs_on+0x382/0x580 [ 45.645616][ T103] ? device_create_with_groups+0x120/0x120 [ 45.651440][ T103] ? pm_runtime_barrier+0x260/0x260 [ 45.656662][ T103] ? lockdep_init_map+0x1b0/0x5e0 [ 45.661677][ T103] device_unregister+0x22/0xc0 [ 45.666422][ T103] i2c_del_adapter+0x4c6/0x660 [ 45.671166][ T103] ? del_timer_sync+0x115/0x130 [ 45.675995][ T103] pvr2_i2c_core_done+0x69/0xb6 [ 45.680831][ T103] pvr2_hdw_destroy+0x179/0x370 [ 45.685662][ T103] pvr2_context_destroy+0x84/0x230 [ 45.690754][ T103] pvr2_context_thread_func+0x657/0x860 [ 45.696293][ T103] ? lock_acquire+0x130/0x340 [ 45.700987][ T103] ? pvr2_context_destroy+0x230/0x230 [ 45.706338][ T103] ? finish_wait+0x260/0x260 [ 45.710910][ T103] ? lockdep_hardirqs_on+0x382/0x580 [ 45.716349][ T103] ? __kthread_parkme+0x10a/0x1c0 [ 45.721351][ T103] ? pvr2_context_destroy+0x230/0x230 [ 45.726702][ T103] kthread+0x318/0x420 [ 45.730748][ T103] ? kthread_create_on_node+0xf0/0xf0 [ 45.736147][ T103] ret_from_fork+0x24/0x30 [ 45.741189][ T103] Kernel Offset: disabled [ 45.745580][ T103] Rebooting in 86400 seconds..