[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 102.333647][ T30] audit: type=1800 audit(1563822590.389:25): pid=11974 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 102.357786][ T30] audit: type=1800 audit(1563822590.409:26): pid=11974 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 102.396525][ T30] audit: type=1800 audit(1563822590.439:27): pid=11974 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 '10.128.15.206' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 112.952012][ T3814] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 113.192015][ T3814] usb 1-1: Using ep0 maxpacket: 8 [ 113.312187][ T3814] usb 1-1: config 0 has an invalid interface number: 241 but max is 0 [ 113.320447][ T3814] usb 1-1: config 0 has no interface number 0 [ 113.326814][ T3814] usb 1-1: New USB device found, idVendor=0c72, idProduct=000d, bcdDevice=da.d3 [ 113.336031][ T3814] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 113.345869][ T3814] usb 1-1: config 0 descriptor?? [ 113.812412][ T3814] ================================================================== [ 113.820573][ T3814] BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x7ef/0x1f50 [ 113.828298][ T3814] CPU: 1 PID: 3814 Comm: kworker/1:2 Not tainted 5.2.0+ #15 [ 113.835569][ T3814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.845625][ T3814] Workqueue: usb_hub_wq hub_event [ 113.850651][ T3814] Call Trace: [ 113.853947][ T3814] dump_stack+0x191/0x1f0 [ 113.858282][ T3814] kmsan_report+0x162/0x2d0 [ 113.862820][ T3814] kmsan_internal_check_memory+0x974/0xa80 [ 113.868620][ T3814] ? process_one_work+0x1572/0x1f00 [ 113.873813][ T3814] ? worker_thread+0x111b/0x2460 [ 113.878756][ T3814] ? kthread+0x4b5/0x4f0 [ 113.883088][ T3814] ? ret_from_fork+0x35/0x40 [ 113.887675][ T3814] ? __device_attach+0x489/0x750 [ 113.892609][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.898498][ T3814] kmsan_handle_urb+0x28/0x40 [ 113.903179][ T3814] usb_submit_urb+0x7ef/0x1f50 [ 113.907980][ T3814] usb_start_wait_urb+0x143/0x410 [ 113.913028][ T3814] usb_control_msg+0x49f/0x7f0 [ 113.917813][ T3814] pcan_usb_pro_init+0x1319/0x1720 [ 113.922961][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.928862][ T3814] ? pcan_usb_pro_probe+0x250/0x250 [ 113.934071][ T3814] peak_usb_probe+0x1416/0x1b20 [ 113.938952][ T3814] ? peak_usb_do_device_exit+0x240/0x240 [ 113.944699][ T3814] usb_probe_interface+0xd19/0x1310 [ 113.949910][ T3814] ? usb_register_driver+0x7d0/0x7d0 [ 113.955195][ T3814] really_probe+0x1344/0x1d90 [ 113.959977][ T3814] driver_probe_device+0x1ba/0x510 [ 113.965085][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.970977][ T3814] __device_attach_driver+0x5b8/0x790 [ 113.976373][ T3814] bus_for_each_drv+0x28e/0x3b0 [ 113.981220][ T3814] ? deferred_probe_work_func+0x400/0x400 [ 113.986952][ T3814] __device_attach+0x489/0x750 [ 113.991721][ T3814] device_initial_probe+0x4a/0x60 [ 113.996741][ T3814] bus_probe_device+0x131/0x390 [ 114.001598][ T3814] device_add+0x25b5/0x2df0 [ 114.006123][ T3814] usb_set_configuration+0x309f/0x3710 [ 114.011609][ T3814] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 114.017713][ T3814] generic_probe+0xe7/0x280 [ 114.022239][ T3814] ? usb_choose_configuration+0xae0/0xae0 [ 114.027991][ T3814] usb_probe_device+0x146/0x200 [ 114.032889][ T3814] ? usb_register_device_driver+0x470/0x470 [ 114.038809][ T3814] really_probe+0x1344/0x1d90 [ 114.043551][ T3814] driver_probe_device+0x1ba/0x510 [ 114.048692][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.054881][ T3814] __device_attach_driver+0x5b8/0x790 [ 114.060308][ T3814] bus_for_each_drv+0x28e/0x3b0 [ 114.065174][ T3814] ? deferred_probe_work_func+0x400/0x400 [ 114.070936][ T3814] __device_attach+0x489/0x750 [ 114.075751][ T3814] device_initial_probe+0x4a/0x60 [ 114.080981][ T3814] bus_probe_device+0x131/0x390 [ 114.085894][ T3814] device_add+0x25b5/0x2df0 [ 114.090459][ T3814] usb_new_device+0x23e5/0x2fb0 [ 114.095370][ T3814] hub_event+0x5853/0x7320 [ 114.099902][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.105822][ T3814] ? led_work+0x720/0x720 [ 114.110173][ T3814] ? led_work+0x720/0x720 [ 114.114524][ T3814] process_one_work+0x1572/0x1f00 [ 114.119607][ T3814] worker_thread+0x111b/0x2460 [ 114.124433][ T3814] kthread+0x4b5/0x4f0 [ 114.128604][ T3814] ? process_one_work+0x1f00/0x1f00 [ 114.133832][ T3814] ? kthread_blkcg+0xf0/0xf0 [ 114.138440][ T3814] ret_from_fork+0x35/0x40 [ 114.142879][ T3814] [ 114.145204][ T3814] Uninit was created at: [ 114.149931][ T3814] kmsan_internal_poison_shadow+0x53/0xa0 [ 114.155659][ T3814] kmsan_slab_alloc+0xaa/0x120 [ 114.160437][ T3814] kmem_cache_alloc_trace+0x873/0xa50 [ 114.165824][ T3814] pcan_usb_pro_init+0xe96/0x1720 [ 114.170855][ T3814] peak_usb_probe+0x1416/0x1b20 [ 114.176234][ T3814] usb_probe_interface+0xd19/0x1310 [ 114.181440][ T3814] really_probe+0x1344/0x1d90 [ 114.186131][ T3814] driver_probe_device+0x1ba/0x510 [ 114.191257][ T3814] __device_attach_driver+0x5b8/0x790 [ 114.196644][ T3814] bus_for_each_drv+0x28e/0x3b0 [ 114.201511][ T3814] __device_attach+0x489/0x750 [ 114.206295][ T3814] device_initial_probe+0x4a/0x60 [ 114.211336][ T3814] bus_probe_device+0x131/0x390 [ 114.216212][ T3814] device_add+0x25b5/0x2df0 [ 114.220744][ T3814] usb_set_configuration+0x309f/0x3710 [ 114.226238][ T3814] generic_probe+0xe7/0x280 [ 114.230864][ T3814] usb_probe_device+0x146/0x200 [ 114.235735][ T3814] really_probe+0x1344/0x1d90 [ 114.240443][ T3814] driver_probe_device+0x1ba/0x510 [ 114.245561][ T3814] __device_attach_driver+0x5b8/0x790 [ 114.250935][ T3814] bus_for_each_drv+0x28e/0x3b0 [ 114.255795][ T3814] __device_attach+0x489/0x750 [ 114.260561][ T3814] device_initial_probe+0x4a/0x60 [ 114.265588][ T3814] bus_probe_device+0x131/0x390 [ 114.270442][ T3814] device_add+0x25b5/0x2df0 [ 114.274945][ T3814] usb_new_device+0x23e5/0x2fb0 [ 114.279804][ T3814] hub_event+0x5853/0x7320 [ 114.284230][ T3814] process_one_work+0x1572/0x1f00 [ 114.289268][ T3814] worker_thread+0x111b/0x2460 [ 114.294044][ T3814] kthread+0x4b5/0x4f0 [ 114.298121][ T3814] ret_from_fork+0x35/0x40 [ 114.302540][ T3814] [ 114.304874][ T3814] Bytes 2-15 of 16 are uninitialized [ 114.310185][ T3814] Memory access of size 16 starts at ffff8881030286e0 [ 114.317008][ T3814] ================================================================== [ 114.325074][ T3814] Disabling lock debugging due to kernel taint [ 114.331232][ T3814] Kernel panic - not syncing: panic_on_warn set ... [ 114.337836][ T3814] CPU: 1 PID: 3814 Comm: kworker/1:2 Tainted: G B 5.2.0+ #15 [ 114.346506][ T3814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.356577][ T3814] Workqueue: usb_hub_wq hub_event [ 114.361621][ T3814] Call Trace: [ 114.364937][ T3814] dump_stack+0x191/0x1f0 [ 114.369291][ T3814] panic+0x3c9/0xc1e [ 114.373254][ T3814] kmsan_report+0x2ca/0x2d0 [ 114.377868][ T3814] kmsan_internal_check_memory+0x974/0xa80 [ 114.383700][ T3814] ? process_one_work+0x1572/0x1f00 [ 114.388908][ T3814] ? worker_thread+0x111b/0x2460 [ 114.393862][ T3814] ? kthread+0x4b5/0x4f0 [ 114.398118][ T3814] ? ret_from_fork+0x35/0x40 [ 114.402727][ T3814] ? __device_attach+0x489/0x750 [ 114.407703][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.414058][ T3814] kmsan_handle_urb+0x28/0x40 [ 114.418755][ T3814] usb_submit_urb+0x7ef/0x1f50 [ 114.423580][ T3814] usb_start_wait_urb+0x143/0x410 [ 114.428641][ T3814] usb_control_msg+0x49f/0x7f0 [ 114.433447][ T3814] pcan_usb_pro_init+0x1319/0x1720 [ 114.438600][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.444533][ T3814] ? pcan_usb_pro_probe+0x250/0x250 [ 114.449750][ T3814] peak_usb_probe+0x1416/0x1b20 [ 114.454656][ T3814] ? peak_usb_do_device_exit+0x240/0x240 [ 114.460308][ T3814] usb_probe_interface+0xd19/0x1310 [ 114.465548][ T3814] ? usb_register_driver+0x7d0/0x7d0 [ 114.470850][ T3814] really_probe+0x1344/0x1d90 [ 114.475568][ T3814] driver_probe_device+0x1ba/0x510 [ 114.480703][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.486629][ T3814] __device_attach_driver+0x5b8/0x790 [ 114.492045][ T3814] bus_for_each_drv+0x28e/0x3b0 [ 114.496913][ T3814] ? deferred_probe_work_func+0x400/0x400 [ 114.502665][ T3814] __device_attach+0x489/0x750 [ 114.507475][ T3814] device_initial_probe+0x4a/0x60 [ 114.512524][ T3814] bus_probe_device+0x131/0x390 [ 114.517645][ T3814] device_add+0x25b5/0x2df0 [ 114.522198][ T3814] usb_set_configuration+0x309f/0x3710 [ 114.527724][ T3814] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 114.533843][ T3814] generic_probe+0xe7/0x280 [ 114.538374][ T3814] ? usb_choose_configuration+0xae0/0xae0 [ 114.544119][ T3814] usb_probe_device+0x146/0x200 [ 114.549001][ T3814] ? usb_register_device_driver+0x470/0x470 [ 114.554917][ T3814] really_probe+0x1344/0x1d90 [ 114.559633][ T3814] driver_probe_device+0x1ba/0x510 [ 114.564778][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.570696][ T3814] __device_attach_driver+0x5b8/0x790 [ 114.576114][ T3814] bus_for_each_drv+0x28e/0x3b0 [ 114.580985][ T3814] ? deferred_probe_work_func+0x400/0x400 [ 114.586743][ T3814] __device_attach+0x489/0x750 [ 114.591558][ T3814] device_initial_probe+0x4a/0x60 [ 114.596600][ T3814] bus_probe_device+0x131/0x390 [ 114.601474][ T3814] device_add+0x25b5/0x2df0 [ 114.606024][ T3814] usb_new_device+0x23e5/0x2fb0 [ 114.610922][ T3814] hub_event+0x5853/0x7320 [ 114.615436][ T3814] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 114.621338][ T3814] ? led_work+0x720/0x720 [ 114.625678][ T3814] ? led_work+0x720/0x720 [ 114.630025][ T3814] process_one_work+0x1572/0x1f00 [ 114.635103][ T3814] worker_thread+0x111b/0x2460 [ 114.639923][ T3814] kthread+0x4b5/0x4f0 [ 114.644011][ T3814] ? process_one_work+0x1f00/0x1f00 [ 114.649233][ T3814] ? kthread_blkcg+0xf0/0xf0 [ 114.653838][ T3814] ret_from_fork+0x35/0x40 [ 114.659376][ T3814] Kernel Offset: disabled [ 114.663720][ T3814] Rebooting in 86400 seconds..