[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 95.084931][ T30] audit: type=1800 audit(1559830651.138:25): pid=13309 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 95.109458][ T30] audit: type=1800 audit(1559830651.158:26): pid=13309 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 95.146075][ T30] audit: type=1800 audit(1559830651.188:27): pid=13309 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.0.180' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 106.952119][T13461] IPVS: ftp: loaded support on port[0] = 21 [ 107.261991][ T33] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 107.501983][ T33] usb 1-1: Using ep0 maxpacket: 8 [ 107.622017][ T33] usb 1-1: config 0 has an invalid interface number: 110 but max is 0 [ 107.630259][ T33] usb 1-1: config 0 has no interface number 0 [ 107.636536][ T33] usb 1-1: New USB device found, idVendor=0ac8, idProduct=c301, bcdDevice= 1.4a [ 107.645721][ T33] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 107.655305][ T33] usb 1-1: config 0 descriptor?? [ 107.696052][ T33] gspca_main: vc032x-2.14.0 probing 0ac8:c301 [ 107.891935][ T33] gspca_vc032x: reg_w err -71 [ 107.896655][ T33] ================================================================== [ 107.904709][ T33] BUG: KMSAN: uninit-value in read_sensor_register+0x732/0x26a0 [ 107.912324][ T33] CPU: 1 PID: 33 Comm: kworker/1:1 Not tainted 5.1.0+ #1 [ 107.919327][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.929395][ T33] Workqueue: usb_hub_wq hub_event [ 107.934403][ T33] Call Trace: [ 107.937704][ T33] dump_stack+0x191/0x1f0 [ 107.942037][ T33] kmsan_report+0x130/0x2a0 [ 107.946703][ T33] __msan_warning+0x75/0xe0 [ 107.951226][ T33] read_sensor_register+0x732/0x26a0 [ 107.956526][ T33] sd_init+0x2f94/0x5330 [ 107.960797][ T33] ? sd_config+0x270/0x270 [ 107.965229][ T33] gspca_dev_probe2+0xee0/0x2240 [ 107.970178][ T33] gspca_dev_probe+0x346/0x3b0 [ 107.974941][ T33] sd_probe+0x8d/0xa0 [ 107.978909][ T33] ? sd_s_ctrl+0xdd0/0xdd0 [ 107.983333][ T33] usb_probe_interface+0xd66/0x1320 [ 107.988538][ T33] ? usb_register_driver+0x7d0/0x7d0 [ 107.993812][ T33] really_probe+0xdae/0x1d80 [ 107.998404][ T33] driver_probe_device+0x1b3/0x4f0 [ 108.003517][ T33] __device_attach_driver+0x5b8/0x790 [ 108.008889][ T33] bus_for_each_drv+0x28e/0x3b0 [ 108.013726][ T33] ? deferred_probe_work_func+0x400/0x400 [ 108.019440][ T33] __device_attach+0x454/0x730 [ 108.024221][ T33] device_initial_probe+0x4a/0x60 [ 108.029241][ T33] bus_probe_device+0x137/0x390 [ 108.034101][ T33] device_add+0x288d/0x30e0 [ 108.038630][ T33] usb_set_configuration+0x30dc/0x3750 [ 108.044136][ T33] generic_probe+0xe7/0x280 [ 108.048652][ T33] ? usb_choose_configuration+0xae0/0xae0 [ 108.054452][ T33] usb_probe_device+0x14c/0x200 [ 108.059299][ T33] ? usb_register_device_driver+0x470/0x470 [ 108.065182][ T33] really_probe+0xdae/0x1d80 [ 108.069780][ T33] driver_probe_device+0x1b3/0x4f0 [ 108.074893][ T33] __device_attach_driver+0x5b8/0x790 [ 108.080271][ T33] bus_for_each_drv+0x28e/0x3b0 [ 108.085114][ T33] ? deferred_probe_work_func+0x400/0x400 [ 108.090850][ T33] __device_attach+0x454/0x730 [ 108.095621][ T33] device_initial_probe+0x4a/0x60 [ 108.100641][ T33] bus_probe_device+0x137/0x390 [ 108.105494][ T33] device_add+0x288d/0x30e0 [ 108.110017][ T33] usb_new_device+0x23e5/0x2ff0 [ 108.114885][ T33] hub_event+0x48d1/0x7290 [ 108.119349][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 108.125230][ T33] ? led_work+0x720/0x720 [ 108.129550][ T33] ? led_work+0x720/0x720 [ 108.133874][ T33] process_one_work+0x1572/0x1f00 [ 108.138909][ T33] worker_thread+0x111b/0x2460 [ 108.143693][ T33] kthread+0x4b5/0x4f0 [ 108.147757][ T33] ? process_one_work+0x1f00/0x1f00 [ 108.152950][ T33] ? kthread_blkcg+0xf0/0xf0 [ 108.157531][ T33] ret_from_fork+0x35/0x40 [ 108.161944][ T33] [ 108.164251][ T33] Uninit was created at: [ 108.168482][ T33] kmsan_internal_poison_shadow+0x92/0x150 [ 108.174272][ T33] kmsan_kmalloc+0xa4/0x130 [ 108.178761][ T33] kmem_cache_alloc_trace+0x503/0xae0 [ 108.184118][ T33] gspca_dev_probe2+0x30c/0x2240 [ 108.189040][ T33] gspca_dev_probe+0x346/0x3b0 [ 108.193792][ T33] sd_probe+0x8d/0xa0 [ 108.197762][ T33] usb_probe_interface+0xd66/0x1320 [ 108.202946][ T33] really_probe+0xdae/0x1d80 [ 108.207536][ T33] driver_probe_device+0x1b3/0x4f0 [ 108.212633][ T33] __device_attach_driver+0x5b8/0x790 [ 108.217987][ T33] bus_for_each_drv+0x28e/0x3b0 [ 108.223191][ T33] __device_attach+0x454/0x730 [ 108.228011][ T33] device_initial_probe+0x4a/0x60 [ 108.233028][ T33] bus_probe_device+0x137/0x390 [ 108.237866][ T33] device_add+0x288d/0x30e0 [ 108.242357][ T33] usb_set_configuration+0x30dc/0x3750 [ 108.247822][ T33] generic_probe+0xe7/0x280 [ 108.252316][ T33] usb_probe_device+0x14c/0x200 [ 108.257153][ T33] really_probe+0xdae/0x1d80 [ 108.261740][ T33] driver_probe_device+0x1b3/0x4f0 [ 108.266851][ T33] __device_attach_driver+0x5b8/0x790 [ 108.272207][ T33] bus_for_each_drv+0x28e/0x3b0 [ 108.277040][ T33] __device_attach+0x454/0x730 [ 108.281790][ T33] device_initial_probe+0x4a/0x60 [ 108.286821][ T33] bus_probe_device+0x137/0x390 [ 108.291660][ T33] device_add+0x288d/0x30e0 [ 108.296153][ T33] usb_new_device+0x23e5/0x2ff0 [ 108.300988][ T33] hub_event+0x48d1/0x7290 [ 108.305392][ T33] process_one_work+0x1572/0x1f00 [ 108.310398][ T33] worker_thread+0x111b/0x2460 [ 108.315155][ T33] kthread+0x4b5/0x4f0 [ 108.319211][ T33] ret_from_fork+0x35/0x40 [ 108.323603][ T33] ================================================================== [ 108.331643][ T33] Disabling lock debugging due to kernel taint [ 108.337802][ T33] Kernel panic - not syncing: panic_on_warn set ... [ 108.344397][ T33] CPU: 1 PID: 33 Comm: kworker/1:1 Tainted: G B 5.1.0+ #1 [ 108.352792][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 108.362972][ T33] Workqueue: usb_hub_wq hub_event [ 108.368070][ T33] Call Trace: [ 108.371359][ T33] dump_stack+0x191/0x1f0 [ 108.375686][ T33] panic+0x3ca/0xafe [ 108.379606][ T33] kmsan_report+0x298/0x2a0 [ 108.384111][ T33] __msan_warning+0x75/0xe0 [ 108.388616][ T33] read_sensor_register+0x732/0x26a0 [ 108.393906][ T33] sd_init+0x2f94/0x5330 [ 108.398148][ T33] ? sd_config+0x270/0x270 [ 108.402552][ T33] gspca_dev_probe2+0xee0/0x2240 [ 108.407501][ T33] gspca_dev_probe+0x346/0x3b0 [ 108.412279][ T33] sd_probe+0x8d/0xa0 [ 108.416249][ T33] ? sd_s_ctrl+0xdd0/0xdd0 [ 108.420655][ T33] usb_probe_interface+0xd66/0x1320 [ 108.425858][ T33] ? usb_register_driver+0x7d0/0x7d0 [ 108.431132][ T33] really_probe+0xdae/0x1d80 [ 108.435724][ T33] driver_probe_device+0x1b3/0x4f0 [ 108.441012][ T33] __device_attach_driver+0x5b8/0x790 [ 108.446386][ T33] bus_for_each_drv+0x28e/0x3b0 [ 108.451223][ T33] ? deferred_probe_work_func+0x400/0x400 [ 108.456938][ T33] __device_attach+0x454/0x730 [ 108.461701][ T33] device_initial_probe+0x4a/0x60 [ 108.466732][ T33] bus_probe_device+0x137/0x390 [ 108.471587][ T33] device_add+0x288d/0x30e0 [ 108.476115][ T33] usb_set_configuration+0x30dc/0x3750 [ 108.481621][ T33] generic_probe+0xe7/0x280 [ 108.486118][ T33] ? usb_choose_configuration+0xae0/0xae0 [ 108.491832][ T33] usb_probe_device+0x14c/0x200 [ 108.496691][ T33] ? usb_register_device_driver+0x470/0x470 [ 108.502575][ T33] really_probe+0xdae/0x1d80 [ 108.507187][ T33] driver_probe_device+0x1b3/0x4f0 [ 108.512306][ T33] __device_attach_driver+0x5b8/0x790 [ 108.517695][ T33] bus_for_each_drv+0x28e/0x3b0 [ 108.522534][ T33] ? deferred_probe_work_func+0x400/0x400 [ 108.528250][ T33] __device_attach+0x454/0x730 [ 108.533013][ T33] device_initial_probe+0x4a/0x60 [ 108.538041][ T33] bus_probe_device+0x137/0x390 [ 108.542892][ T33] device_add+0x288d/0x30e0 [ 108.547409][ T33] usb_new_device+0x23e5/0x2ff0 [ 108.552276][ T33] hub_event+0x48d1/0x7290 [ 108.556738][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 108.562617][ T33] ? led_work+0x720/0x720 [ 108.566932][ T33] ? led_work+0x720/0x720 [ 108.571253][ T33] process_one_work+0x1572/0x1f00 [ 108.576289][ T33] worker_thread+0x111b/0x2460 [ 108.581070][ T33] kthread+0x4b5/0x4f0 [ 108.585130][ T33] ? process_one_work+0x1f00/0x1f00 [ 108.590323][ T33] ? kthread_blkcg+0xf0/0xf0 [ 108.594907][ T33] ret_from_fork+0x35/0x40 [ 108.600450][ T33] Kernel Offset: disabled [ 108.604781][ T33] Rebooting in 86400 seconds..