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 '10.128.0.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.735351][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 33.095479][ T83] usb 1-1: config 0 has an invalid interface number: 44 but max is 0 [ 33.103837][ T83] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 33.114202][ T83] usb 1-1: config 0 has no interface number 0 [ 33.120359][ T83] usb 1-1: config 0 interface 44 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 33.131500][ T83] usb 1-1: config 0 interface 44 altsetting 0 endpoint 0x83 has wMaxPacketSize 0, skipping [ 33.141600][ T83] usb 1-1: New USB device found, idVendor=2040, idProduct=8265, bcdDevice=3a.93 [ 33.150938][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 33.160311][ T83] usb 1-1: config 0 descriptor?? executing program [ 33.445571][ T83] usb 1-1: string descriptor 0 read error: -71 [ 33.454086][ T83] em28xx 1-1:0.44: New device @ 480 Mbps (2040:8265, interface 44, class 44) [ 33.463255][ T83] em28xx 1-1:0.44: Audio interface 44 found (Vendor Class) [ 33.595862][ T83] em28xx 1-1:0.44: unknown em28xx chip ID (0) [ 33.615421][ T83] em28xx 1-1:0.44: Config register raw data: 0xfffffffb [ 33.635377][ T83] em28xx 1-1:0.44: AC97 chip type couldn't be determined [ 33.642519][ T83] em28xx 1-1:0.44: No AC97 audio processor [ 33.648537][ T83] em28xx 1-1:0.44: We currently don't support analog TV or stream capture on dual tuners. [ 33.785401][ T83] em28xx 1-1:0.44: unknown em28xx chip ID (0) [ 33.805434][ T83] em28xx 1-1:0.44: Config register raw data: 0xfffffffb [ 33.825427][ T83] em28xx 1-1:0.44: AC97 chip type couldn't be determined [ 33.832469][ T83] em28xx 1-1:0.44: No AC97 audio processor [ 34.078086][ T83] usb 1-1: USB disconnect, device number 2 [ 34.085019][ T83] em28xx 1-1:0.44: Disconnecting em28xx #1 [ 34.091201][ T83] em28xx 1-1:0.44: Disconnecting em28xx [ 34.098630][ T83] em28xx 1-1:0.44: Freeing device [ 34.103683][ T83] em28xx 1-1:0.44: Freeing device [ 34.455328][ T83] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 34.815366][ T83] usb 1-1: config 0 has an invalid interface number: 44 but max is 0 [ 34.823591][ T83] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 34.833714][ T83] usb 1-1: config 0 has no interface number 0 [ 34.839849][ T83] usb 1-1: config 0 interface 44 altsetting 0 endpoint 0x83 has an invalid bInterval 0, changing to 7 [ 34.850853][ T83] usb 1-1: config 0 interface 44 altsetting 0 endpoint 0x83 has wMaxPacketSize 0, skipping [ 34.860976][ T83] usb 1-1: New USB device found, idVendor=2040, idProduct=8265, bcdDevice=3a.93 [ 34.870212][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 34.879685][ T83] usb 1-1: config 0 descriptor?? executing program [ 35.155570][ T83] usb 1-1: string descriptor 0 read error: -71 [ 35.163596][ T83] em28xx 1-1:0.44: New device @ 480 Mbps (2040:8265, interface 44, class 44) [ 35.172657][ T83] em28xx 1-1:0.44: Audio interface 44 found (Vendor Class) [ 35.325405][ T83] em28xx 1-1:0.44: unknown em28xx chip ID (0) [ 35.345374][ T83] em28xx 1-1:0.44: Config register raw data: 0xfffffffb [ 35.365418][ T83] em28xx 1-1:0.44: AC97 chip type couldn't be determined [ 35.372474][ T83] em28xx 1-1:0.44: No AC97 audio processor [ 35.378389][ T83] ------------[ cut here ]------------ [ 35.383989][ T83] list_add corruption. prev->next should be next (ffffffff8753dbc0), but was ffffffff83501085. (prev=ffff8881c66d0240). [ 35.396614][ T83] WARNING: CPU: 1 PID: 83 at lib/list_debug.c:26 __list_add_valid+0x99/0xf0 [ 35.405276][ T83] Kernel panic - not syncing: panic_on_warn set ... [ 35.411846][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.4.0-rc6+ #0 [ 35.419198][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.429237][ T83] Workqueue: usb_hub_wq hub_event [ 35.434243][ T83] Call Trace: [ 35.437543][ T83] dump_stack+0xca/0x13e [ 35.441774][ T83] ? __list_add_valid+0x40/0xf0 [ 35.446602][ T83] panic+0x2aa/0x6e1 [ 35.450506][ T83] ? add_taint.cold+0x16/0x16 [ 35.455177][ T83] ? __probe_kernel_read+0x188/0x1d0 [ 35.460453][ T83] ? __warn.cold+0x14/0x33 [ 35.464857][ T83] ? __warn+0xd5/0x1d0 [ 35.468923][ T83] ? __list_add_valid+0x99/0xf0 [ 35.473752][ T83] __warn.cold+0x2f/0x33 [ 35.477983][ T83] ? __list_add_valid+0x99/0xf0 [ 35.482843][ T83] report_bug+0x27b/0x2f0 [ 35.487156][ T83] do_error_trap+0x12b/0x1e0 [ 35.491730][ T83] ? __list_add_valid+0x99/0xf0 [ 35.496569][ T83] do_invalid_op+0x32/0x40 [ 35.500980][ T83] ? __list_add_valid+0x99/0xf0 [ 35.505826][ T83] invalid_op+0x23/0x30 [ 35.509981][ T83] RIP: 0010:__list_add_valid+0x99/0xf0 [ 35.515428][ T83] Code: 48 c7 c7 80 ba da 85 e8 5a 31 30 ff 0f 0b 48 83 c4 08 31 c0 5d 41 5c c3 48 89 f1 48 c7 c7 40 bb da 85 4c 89 e6 e8 3c 31 30 ff <0f> 0b 31 c0 eb c5 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 c0 bb da 85 [ 35.535029][ T83] RSP: 0018:ffff8881d89df0e0 EFLAGS: 00010286 [ 35.541172][ T83] RAX: 0000000000000000 RBX: ffff8881cfb98120 RCX: 0000000000000000 [ 35.549139][ T83] RDX: 0000000000000000 RSI: ffffffff8128c9cd RDI: ffffed103b13be0e [ 35.557108][ T83] RBP: ffff8881cfb98240 R08: ffff8881d8c6c800 R09: fffffbfff11ab3af [ 35.565093][ T83] R10: fffffbfff11ab3ae R11: ffffffff88d59d77 R12: ffffffff8753dbc0 [ 35.574046][ T83] R13: ffff8881cfb98000 R14: ffff8881cfb9812c R15: ffff8881cf90d000 [ 35.582023][ T83] ? vprintk_func+0x7d/0x113 [ 35.586603][ T83] em28xx_init_extension+0x44/0x1f0 [ 35.591876][ T83] em28xx_init_dev.isra.0+0xa7b/0x15d8 [ 35.597321][ T83] ? _dev_info+0xd7/0x109 [ 35.601647][ T83] ? em28xx_usb_disconnect.cold+0x27a/0x27a [ 35.607536][ T83] ? lockdep_init_map+0x1b0/0x5e0 [ 35.612539][ T83] ? lockdep_init_map+0x1b0/0x5e0 [ 35.617546][ T83] em28xx_usb_probe.cold+0xcac/0x2516 [ 35.622901][ T83] usb_probe_interface+0x305/0x7a0 [ 35.627998][ T83] ? usb_probe_device+0x100/0x100 [ 35.633026][ T83] really_probe+0x281/0x6d0 [ 35.637514][ T83] driver_probe_device+0x104/0x210 [ 35.642603][ T83] __device_attach_driver+0x1c2/0x220 [ 35.647956][ T83] ? driver_allows_async_probing+0x160/0x160 [ 35.653914][ T83] bus_for_each_drv+0x162/0x1e0 [ 35.658746][ T83] ? bus_rescan_devices+0x20/0x20 [ 35.663760][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 35.669666][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 35.674945][ T83] __device_attach+0x217/0x360 [ 35.680013][ T83] ? device_bind_driver+0xd0/0xd0 [ 35.685048][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 35.690323][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 35.695595][ T83] bus_probe_device+0x1e4/0x290 [ 35.700432][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 35.706321][ T83] device_add+0xae6/0x16f0 [ 35.710733][ T83] ? uevent_store+0x50/0x50 [ 35.715228][ T83] usb_set_configuration+0xdf6/0x1670 [ 35.720590][ T83] generic_probe+0x9d/0xd5 [ 35.724990][ T83] usb_probe_device+0x99/0x100 [ 35.729768][ T83] ? usb_suspend+0x620/0x620 [ 35.734339][ T83] really_probe+0x281/0x6d0 [ 35.738854][ T83] driver_probe_device+0x104/0x210 [ 35.743958][ T83] __device_attach_driver+0x1c2/0x220 [ 35.749312][ T83] ? driver_allows_async_probing+0x160/0x160 [ 35.755273][ T83] bus_for_each_drv+0x162/0x1e0 [ 35.760099][ T83] ? bus_rescan_devices+0x20/0x20 [ 35.765111][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 35.770902][ T83] ? lockdep_hardirqs_on+0x382/0x580 [ 35.776166][ T83] __device_attach+0x217/0x360 [ 35.780937][ T83] ? device_bind_driver+0xd0/0xd0 [ 35.785960][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 35.792280][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 35.797560][ T83] bus_probe_device+0x1e4/0x290 [ 35.802398][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 35.808281][ T83] device_add+0xae6/0x16f0 [ 35.812697][ T83] ? uevent_store+0x50/0x50 [ 35.817188][ T83] usb_new_device.cold+0x6a4/0xe79 [ 35.822278][ T83] hub_event+0x1df8/0x3800 [ 35.826673][ T83] ? hub_port_debounce+0x260/0x260 [ 35.831787][ T83] ? find_held_lock+0x2d/0x110 [ 35.836553][ T83] ? mark_held_locks+0xe0/0xe0 [ 35.841309][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 35.846844][ T83] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 35.852147][ T83] process_one_work+0x92b/0x1530 [ 35.857065][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 35.862416][ T83] ? do_raw_spin_lock+0x11a/0x280 [ 35.867429][ T83] worker_thread+0x7ab/0xe20 [ 35.872011][ T83] ? process_one_work+0x1530/0x1530 [ 35.877200][ T83] kthread+0x318/0x420 [ 35.881246][ T83] ? kthread_create_on_node+0xf0/0xf0 [ 35.886593][ T83] ret_from_fork+0x24/0x30 [ 35.891985][ T83] Kernel Offset: disabled [ 35.896354][ T83] Rebooting in 86400 seconds..