[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 75.462012][ T30] audit: type=1800 audit(1567131100.518:25): pid=11106 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 75.485540][ T30] audit: type=1800 audit(1567131100.548:26): pid=11106 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 75.522868][ T30] audit: type=1800 audit(1567131100.568:27): pid=11106 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 '10.128.1.60' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 84.631845][ T3372] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 84.651860][ T12] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 84.661896][ T2882] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 84.669777][T11269] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 84.677777][ T5] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 84.691840][ T35] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 84.872398][ T3372] usb 1-1: Using ep0 maxpacket: 8 [ 84.892042][ T12] usb 4-1: Using ep0 maxpacket: 8 [ 84.902183][ T2882] usb 5-1: Using ep0 maxpacket: 8 [ 84.922263][T11269] usb 6-1: Using ep0 maxpacket: 8 [ 84.927542][ T5] usb 3-1: Using ep0 maxpacket: 8 [ 84.932002][ T35] usb 2-1: Using ep0 maxpacket: 8 [ 84.992301][ T3372] usb 1-1: config 0 has an invalid interface number: 186 but max is 0 [ 85.000633][ T3372] usb 1-1: config 0 has no interface number 0 [ 85.007087][ T3372] usb 1-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 85.017195][ T3372] usb 1-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 85.027278][ T3372] usb 1-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 85.036447][ T3372] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.042439][ T12] usb 4-1: config 0 has an invalid interface number: 186 but max is 0 [ 85.046218][ T3372] usb 1-1: config 0 descriptor?? [ 85.052968][ T12] usb 4-1: config 0 has no interface number 0 [ 85.063835][ T12] usb 4-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 85.073826][ T12] usb 4-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 85.082109][ T35] usb 2-1: config 0 has an invalid interface number: 186 but max is 0 [ 85.083904][ T12] usb 4-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 85.092325][ T35] usb 2-1: config 0 has no interface number 0 [ 85.101226][ T12] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.107378][ T35] usb 2-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 85.116399][ T2882] usb 5-1: config 0 has an invalid interface number: 186 but max is 0 [ 85.125232][ T35] usb 2-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 85.133422][ T2882] usb 5-1: config 0 has no interface number 0 [ 85.143382][ T35] usb 2-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 85.149405][ T2882] usb 5-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 85.158558][ T35] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.168705][ T2882] usb 5-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 85.180255][ T3372] smsc75xx v1.0.0 [ 85.186518][ T2882] usb 5-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 85.199373][ T2882] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.208952][T11269] usb 6-1: config 0 has an invalid interface number: 186 but max is 0 [ 85.217368][T11269] usb 6-1: config 0 has no interface number 0 [ 85.223930][T11269] usb 6-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 85.226274][ T35] usb 2-1: config 0 descriptor?? [ 85.233870][T11269] usb 6-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 85.233972][T11269] usb 6-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 85.258058][T11269] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.267325][ T5] usb 3-1: config 0 has an invalid interface number: 186 but max is 0 [ 85.274036][ T35] smsc75xx v1.0.0 [ 85.275779][ T5] usb 3-1: config 0 has no interface number 0 [ 85.285535][ T5] usb 3-1: config 0 interface 186 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 85.295474][ T5] usb 3-1: config 0 interface 186 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 85.305657][ T5] usb 3-1: New USB device found, idVendor=0424, idProduct=7500, bcdDevice=82.12 [ 85.314858][ T5] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.324613][T11269] usb 6-1: config 0 descriptor?? [ 85.330514][ T5] usb 3-1: config 0 descriptor?? [ 85.347164][ T12] usb 4-1: config 0 descriptor?? [ 85.353246][ T2882] usb 5-1: config 0 descriptor?? [ 85.363788][T11269] smsc75xx v1.0.0 [ 85.384781][ T5] smsc75xx v1.0.0 [ 85.404115][ T12] smsc75xx v1.0.0 [ 85.410020][ T2882] smsc75xx v1.0.0 [ 85.422521][ T3372] ================================================================== [ 85.430636][ T3372] BUG: KMSAN: uninit-value in smsc75xx_bind+0x541/0x12d0 [ 85.437757][ T3372] CPU: 1 PID: 3372 Comm: kworker/1:2 Not tainted 5.3.0-rc6+ #18 [ 85.445398][ T3372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.455652][ T3372] Workqueue: usb_hub_wq hub_event [ 85.460662][ T3372] Call Trace: [ 85.463965][ T3372] dump_stack+0x191/0x1f0 [ 85.468311][ T3372] kmsan_report+0x162/0x2d0 [ 85.472831][ T3372] __msan_warning+0x75/0xe0 [ 85.477352][ T3372] smsc75xx_bind+0x541/0x12d0 [ 85.482043][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.488031][ T3372] ? smsc75xx_write_wuff+0x9e0/0x9e0 [ 85.493305][ T3372] usbnet_probe+0x10ae/0x3960 [ 85.498064][ T3372] ? usbnet_disconnect+0x660/0x660 [ 85.503178][ T3372] usb_probe_interface+0xd19/0x1310 [ 85.508388][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.514392][ T3372] ? usb_register_driver+0x7d0/0x7d0 [ 85.519689][ T3372] really_probe+0x1373/0x1dc0 [ 85.524389][ T3372] driver_probe_device+0x1ba/0x510 [ 85.529545][ T3372] __device_attach_driver+0x5b8/0x790 [ 85.534920][ T3372] ? bus_for_each_drv+0x1d5/0x3b0 [ 85.539940][ T3372] bus_for_each_drv+0x28e/0x3b0 [ 85.544794][ T3372] ? deferred_probe_work_func+0x400/0x400 [ 85.550650][ T3372] __device_attach+0x489/0x750 [ 85.555541][ T3372] device_initial_probe+0x4a/0x60 [ 85.560566][ T3372] bus_probe_device+0x131/0x390 [ 85.565446][ T3372] device_add+0x25b5/0x2df0 [ 85.569943][ T3372] ? usb_set_configuration+0x3036/0x3710 [ 85.575581][ T3372] usb_set_configuration+0x309f/0x3710 [ 85.581151][ T3372] generic_probe+0xe7/0x280 [ 85.585665][ T3372] ? usb_probe_device+0x104/0x200 [ 85.590999][ T3372] ? usb_choose_configuration+0xae0/0xae0 [ 85.596719][ T3372] usb_probe_device+0x146/0x200 [ 85.601572][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.607807][ T3372] ? usb_register_device_driver+0x470/0x470 [ 85.613687][ T3372] really_probe+0x1373/0x1dc0 [ 85.618358][ T3372] driver_probe_device+0x1ba/0x510 [ 85.623487][ T3372] __device_attach_driver+0x5b8/0x790 [ 85.628949][ T3372] ? bus_for_each_drv+0x1d5/0x3b0 [ 85.633969][ T3372] bus_for_each_drv+0x28e/0x3b0 [ 85.638816][ T3372] ? deferred_probe_work_func+0x400/0x400 [ 85.644642][ T3372] __device_attach+0x489/0x750 [ 85.649515][ T3372] device_initial_probe+0x4a/0x60 [ 85.654558][ T3372] bus_probe_device+0x131/0x390 [ 85.659426][ T3372] device_add+0x25b5/0x2df0 [ 85.663950][ T3372] usb_new_device+0x23e5/0x2fb0 [ 85.668841][ T3372] hub_event+0x581d/0x72f0 [ 85.673283][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.679348][ T3372] ? led_work+0x720/0x720 [ 85.683668][ T3372] ? led_work+0x720/0x720 [ 85.687997][ T3372] process_one_work+0x1572/0x1ef0 [ 85.693027][ T3372] worker_thread+0x111b/0x2460 [ 85.697784][ T3372] kthread+0x4b5/0x4f0 [ 85.701846][ T3372] ? process_one_work+0x1ef0/0x1ef0 [ 85.707048][ T3372] ? kthread_blkcg+0xf0/0xf0 [ 85.711627][ T3372] ret_from_fork+0x35/0x40 [ 85.716038][ T3372] [ 85.718368][ T3372] Local variable description: ----buf.i93@smsc75xx_bind [ 85.725315][ T3372] Variable was created at: [ 85.729732][ T3372] smsc75xx_bind+0x44c/0x12d0 [ 85.734403][ T3372] usbnet_probe+0x10ae/0x3960 [ 85.739079][ T3372] ================================================================== [ 85.747145][ T3372] Disabling lock debugging due to kernel taint [ 85.753290][ T3372] Kernel panic - not syncing: panic_on_warn set ... [ 85.759906][ T3372] CPU: 1 PID: 3372 Comm: kworker/1:2 Tainted: G B 5.3.0-rc6+ #18 [ 85.768913][ T3372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.778964][ T3372] Workqueue: usb_hub_wq hub_event [ 85.784156][ T3372] Call Trace: [ 85.787453][ T3372] dump_stack+0x191/0x1f0 [ 85.791772][ T3372] panic+0x3c9/0xc1e [ 85.795689][ T3372] kmsan_report+0x2ca/0x2d0 [ 85.800202][ T3372] __msan_warning+0x75/0xe0 [ 85.804708][ T3372] smsc75xx_bind+0x541/0x12d0 [ 85.809393][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.815385][ T3372] ? smsc75xx_write_wuff+0x9e0/0x9e0 [ 85.820663][ T3372] usbnet_probe+0x10ae/0x3960 [ 85.825352][ T3372] ? usbnet_disconnect+0x660/0x660 [ 85.830531][ T3372] usb_probe_interface+0xd19/0x1310 [ 85.835747][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.841730][ T3372] ? usb_register_driver+0x7d0/0x7d0 [ 85.847004][ T3372] really_probe+0x1373/0x1dc0 [ 85.851708][ T3372] driver_probe_device+0x1ba/0x510 [ 85.857007][ T3372] __device_attach_driver+0x5b8/0x790 [ 85.862379][ T3372] ? bus_for_each_drv+0x1d5/0x3b0 [ 85.867411][ T3372] bus_for_each_drv+0x28e/0x3b0 [ 85.872251][ T3372] ? deferred_probe_work_func+0x400/0x400 [ 85.877971][ T3372] __device_attach+0x489/0x750 [ 85.882759][ T3372] device_initial_probe+0x4a/0x60 [ 85.887763][ T3372] bus_probe_device+0x131/0x390 [ 85.892612][ T3372] device_add+0x25b5/0x2df0 [ 85.897144][ T3372] ? usb_set_configuration+0x3036/0x3710 [ 85.902785][ T3372] usb_set_configuration+0x309f/0x3710 [ 85.908260][ T3372] generic_probe+0xe7/0x280 [ 85.912743][ T3372] ? usb_probe_device+0x104/0x200 [ 85.917755][ T3372] ? usb_choose_configuration+0xae0/0xae0 [ 85.923480][ T3372] usb_probe_device+0x146/0x200 [ 85.928331][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 85.934499][ T3372] ? usb_register_device_driver+0x470/0x470 [ 85.940404][ T3372] really_probe+0x1373/0x1dc0 [ 85.945100][ T3372] driver_probe_device+0x1ba/0x510 [ 85.950296][ T3372] __device_attach_driver+0x5b8/0x790 [ 85.955686][ T3372] ? bus_for_each_drv+0x1d5/0x3b0 [ 85.960816][ T3372] bus_for_each_drv+0x28e/0x3b0 [ 85.965841][ T3372] ? deferred_probe_work_func+0x400/0x400 [ 85.971583][ T3372] __device_attach+0x489/0x750 [ 85.976387][ T3372] device_initial_probe+0x4a/0x60 [ 85.981452][ T3372] bus_probe_device+0x131/0x390 [ 85.986312][ T3372] device_add+0x25b5/0x2df0 [ 85.990835][ T3372] usb_new_device+0x23e5/0x2fb0 [ 85.995717][ T3372] hub_event+0x581d/0x72f0 [ 86.000311][ T3372] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 86.006293][ T3372] ? led_work+0x720/0x720 [ 86.010634][ T3372] ? led_work+0x720/0x720 [ 86.014990][ T3372] process_one_work+0x1572/0x1ef0 [ 86.020018][ T3372] worker_thread+0x111b/0x2460 [ 86.024786][ T3372] kthread+0x4b5/0x4f0 [ 86.028866][ T3372] ? process_one_work+0x1ef0/0x1ef0 [ 86.034174][ T3372] ? kthread_blkcg+0xf0/0xf0 [ 86.038793][ T3372] ret_from_fork+0x35/0x40 [ 86.045086][ T3372] Kernel Offset: disabled [ 86.049414][ T3372] Rebooting in 86400 seconds..