INIT: Entering runlevel: 2 [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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.243781][ T102] usb 1-1: new full-speed USB device number 2 using dummy_hcd [ 25.643804][ T102] usb 1-1: unable to get BOS descriptor or descriptor too short [ 25.683870][ T102] usb 1-1: not running at top speed; connect to a high speed hub [ 25.763820][ T102] usb 1-1: config 34 has an invalid interface number: 187 but max is 0 [ 25.772195][ T102] usb 1-1: config 34 has no interface number 0 [ 25.778607][ T102] usb 1-1: config 34 interface 187 altsetting 4 endpoint 0x7 has invalid maxpacket 1024, setting to 1023 [ 25.789866][ T102] usb 1-1: config 34 interface 187 altsetting 4 has an invalid endpoint descriptor of length 2, skipping [ 25.801165][ T102] usb 1-1: config 34 interface 187 altsetting 4 has a duplicate endpoint with address 0x7, skipping [ 25.811999][ T102] usb 1-1: config 34 interface 187 altsetting 4 has a duplicate endpoint with address 0xD, skipping [ 25.822884][ T102] usb 1-1: config 34 interface 187 altsetting 4 endpoint 0x1 has invalid maxpacket 512, setting to 64 [ 25.834320][ T102] usb 1-1: config 34 interface 187 altsetting 4 has a duplicate endpoint with address 0x1, skipping [ 25.845260][ T102] usb 1-1: config 34 interface 187 altsetting 4 has 11 endpoint descriptors, different from the interface descriptor's value: 10 [ 25.858863][ T102] usb 1-1: config 34 interface 187 has no altsetting 0 [ 26.103869][ T102] usb 1-1: string descriptor 0 read error: -22 [ 26.110555][ T102] usb 1-1: New USB device found, idVendor=0ccd, idProduct=0039, bcdDevice= 5.29 [ 26.119825][ T102] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 26.166648][ T102] pvrusb2: Hardware description: Terratec Grabster AV400 [ 26.174079][ T102] pvrusb2: ********** [ 26.178183][ T102] pvrusb2: ***WARNING*** Support for this device (Terratec Grabster AV400) is experimental. [ 26.188591][ T102] pvrusb2: Important functionality might not be entirely working. [ 26.196551][ T102] pvrusb2: Please consider contacting the driver author to help with further stabilization of the driver. [ 26.207878][ T102] pvrusb2: ********** [ 26.212248][ T102] usb 1-1: selecting invalid altsetting 0 [ 26.218416][ T103] pvrusb2: Invalid write control endpoint [ 26.235766][ T103] pvrusb2: Invalid write control endpoint [ 26.241619][ T103] pvrusb2: ***WARNING*** Detected a wedged cx25840 chip; the device will not work. [ 26.251216][ T103] pvrusb2: ***WARNING*** Try power cycling the pvrusb2 device. [ 26.258790][ T103] pvrusb2: ***WARNING*** Disabling further access to the device to prevent other foul-ups. [ 26.268856][ T103] pvrusb2: Device being rendered inoperable [ 26.275520][ T103] cx25840 0-0044: Unable to detect h/w, assuming cx23887 [ 26.282809][ T103] cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) [ 26.291992][ T103] pvrusb2: Attached sub-driver cx25840 [ 26.297585][ T103] pvrusb2: ***WARNING*** pvrusb2 device hardware appears to be jammed and I can't clear it. [ 26.308362][ T103] pvrusb2: You might need to power cycle the pvrusb2 device in order to recover. [ 26.366185][ T17] usb 1-1: USB disconnect, device number 2 [ 26.380189][ T103] ------------[ cut here ]------------ [ 26.385776][ T103] sysfs group 'power' not found for kobject 'i2c-0' [ 26.392572][ T103] WARNING: CPU: 0 PID: 103 at fs/sysfs/group.c:278 sysfs_remove_group+0x155/0x1b0 [ 26.401894][ T103] Kernel panic - not syncing: panic_on_warn set ... [ 26.408492][ T103] CPU: 0 PID: 103 Comm: pvrusb2-context Not tainted 5.6.0-rc3-syzkaller #0 [ 26.417328][ T103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.427375][ T103] Call Trace: [ 26.430780][ T103] dump_stack+0xef/0x16e [ 26.435391][ T103] ? sysfs_remove_group+0x90/0x1b0 [ 26.440522][ T103] panic+0x2aa/0x6e1 [ 26.444427][ T103] ? add_taint.cold+0x16/0x16 [ 26.449117][ T103] ? __probe_kernel_read+0x188/0x1d0 [ 26.454520][ T103] ? __warn.cold+0x14/0x30 [ 26.459132][ T103] ? __warn+0xd5/0x1c8 [ 26.463209][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 26.468459][ T103] __warn.cold+0x2f/0x30 [ 26.473019][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 26.478215][ T103] report_bug+0x27b/0x2f0 [ 26.482537][ T103] do_error_trap+0x12b/0x1e0 [ 26.487119][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 26.492432][ T103] do_invalid_op+0x32/0x40 [ 26.497387][ T103] ? sysfs_remove_group+0x155/0x1b0 [ 26.502852][ T103] invalid_op+0x23/0x30 [ 26.507068][ T103] RIP: 0010:sysfs_remove_group+0x155/0x1b0 [ 26.512965][ 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 [ 26.532565][ T103] RSP: 0018:ffff8881d4a07c30 EFLAGS: 00010282 [ 26.538770][ T103] RAX: 0000000000000000 RBX: ffffffff8615f620 RCX: 0000000000000000 [ 26.546731][ T103] RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103a940f78 [ 26.557122][ T103] RBP: 0000000000000000 R08: ffff8881d5659880 R09: ffffed103b64439f [ 26.565271][ T103] R10: ffffed103b64439e R11: ffff8881db221cf3 R12: ffff8881cda50338 [ 26.573233][ T103] R13: ffffffff8615fbc0 R14: ffff8881cda50420 R15: ffff8881cda50900 [ 26.581208][ T103] ? vprintk_func+0x7d/0x113 [ 26.585889][ T103] dpm_sysfs_remove+0x97/0xb0 [ 26.590578][ T103] device_del+0x18b/0xd30 [ 26.594920][ T103] ? lockdep_hardirqs_on+0x382/0x580 [ 26.600198][ T103] ? device_create_with_groups+0x120/0x120 [ 26.606058][ T103] ? pm_runtime_barrier+0x260/0x260 [ 26.611257][ T103] ? lockdep_init_map+0x1b0/0x5e0 [ 26.616283][ T103] device_unregister+0x22/0xc0 [ 26.621053][ T103] i2c_del_adapter+0x4c6/0x660 [ 26.625947][ T103] ? del_timer_sync+0x115/0x130 [ 26.630786][ T103] pvr2_i2c_core_done+0x69/0xb6 [ 26.635729][ T103] pvr2_hdw_destroy+0x179/0x370 [ 26.640690][ T103] pvr2_context_destroy+0x84/0x230 [ 26.645803][ T103] pvr2_context_thread_func+0x657/0x860 [ 26.651474][ T103] ? lock_acquire+0x130/0x340 [ 26.656138][ T103] ? pvr2_context_destroy+0x230/0x230 [ 26.661715][ T103] ? finish_wait+0x260/0x260 [ 26.666708][ T103] ? lockdep_hardirqs_on+0x382/0x580 [ 26.672626][ T103] ? __kthread_parkme+0x10a/0x1c0 [ 26.677865][ T103] ? pvr2_context_destroy+0x230/0x230 [ 26.683240][ T103] kthread+0x318/0x420 [ 26.687457][ T103] ? kthread_create_on_node+0xf0/0xf0 [ 26.692819][ T103] ret_from_fork+0x24/0x30 [ 26.698227][ T103] Kernel Offset: disabled [ 26.702763][ T103] Rebooting in 86400 seconds..