[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 101.320400][ T31] audit: type=1800 audit(1564285996.379:25): pid=11896 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 101.344691][ T31] audit: type=1800 audit(1564285996.409:26): pid=11896 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 101.393422][ T31] audit: type=1800 audit(1564285996.429:27): pid=11896 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 '10.128.1.16' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 112.032169][ T4948] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 112.272134][ T4948] usb 1-1: Using ep0 maxpacket: 8 [ 112.392350][ T4948] usb 1-1: config 0 has an invalid interface number: 146 but max is 0 [ 112.400593][ T4948] usb 1-1: config 0 has no interface number 0 [ 112.414560][ T4948] usb 1-1: New USB device found, idVendor=0c72, idProduct=0014, bcdDevice=8b.53 [ 112.423751][ T4948] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 112.433458][ T4948] usb 1-1: config 0 descriptor?? [ 112.692423][ T4948] peak_usb 1-1:0.146: PEAK-System PCAN-USB X6 v0 fw v0.0.0 (2 channels) [ 112.702538][ T4948] ================================================================== [ 112.711104][ T4948] BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x7ef/0x1f50 [ 112.718848][ T4948] CPU: 1 PID: 4948 Comm: kworker/1:2 Not tainted 5.2.0+ #15 [ 112.726138][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.736226][ T4948] Workqueue: usb_hub_wq hub_event [ 112.741266][ T4948] Call Trace: [ 112.744591][ T4948] dump_stack+0x191/0x1f0 [ 112.748989][ T4948] kmsan_report+0x162/0x2d0 [ 112.753539][ T4948] kmsan_internal_check_memory+0x974/0xa80 [ 112.759461][ T4948] ? usb_new_device+0x23e5/0x2fb0 [ 112.764504][ T4948] ? hub_event+0x5853/0x7320 [ 112.769213][ T4948] ? process_one_work+0x1572/0x1f00 [ 112.774439][ T4948] ? worker_thread+0x111b/0x2460 [ 112.779436][ T4948] ? ret_from_fork+0x35/0x40 [ 112.784151][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.790081][ T4948] kmsan_handle_urb+0x28/0x40 [ 112.794786][ T4948] usb_submit_urb+0x7ef/0x1f50 [ 112.799630][ T4948] usb_start_wait_urb+0x143/0x410 [ 112.804707][ T4948] usb_control_msg+0x49f/0x7f0 [ 112.810039][ T4948] pcan_usb_pro_send_req+0x26b/0x3e0 [ 112.815382][ T4948] pcan_usb_fd_init+0x16ee/0x1900 [ 112.820467][ T4948] ? pcan_usb_pro_set_ts+0x490/0x490 [ 112.825779][ T4948] peak_usb_probe+0x1416/0x1b20 [ 112.830697][ T4948] ? peak_usb_do_device_exit+0x240/0x240 [ 112.836363][ T4948] usb_probe_interface+0xd19/0x1310 [ 112.841607][ T4948] ? usb_register_driver+0x7d0/0x7d0 [ 112.846955][ T4948] really_probe+0x1344/0x1d90 [ 112.851689][ T4948] driver_probe_device+0x1ba/0x510 [ 112.856839][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.862772][ T4948] __device_attach_driver+0x5b8/0x790 [ 112.868654][ T4948] bus_for_each_drv+0x28e/0x3b0 [ 112.873533][ T4948] ? deferred_probe_work_func+0x400/0x400 [ 112.879276][ T4948] __device_attach+0x489/0x750 [ 112.884100][ T4948] device_initial_probe+0x4a/0x60 [ 112.889127][ T4948] bus_probe_device+0x131/0x390 [ 112.893995][ T4948] device_add+0x25b5/0x2df0 [ 112.898569][ T4948] usb_set_configuration+0x309f/0x3710 [ 112.904145][ T4948] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 112.910242][ T4948] generic_probe+0xe7/0x280 [ 112.914953][ T4948] ? usb_choose_configuration+0xae0/0xae0 [ 112.920676][ T4948] usb_probe_device+0x146/0x200 [ 112.925703][ T4948] ? usb_register_device_driver+0x470/0x470 [ 112.931622][ T4948] really_probe+0x1344/0x1d90 [ 112.936431][ T4948] driver_probe_device+0x1ba/0x510 [ 112.941642][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.947726][ T4948] __device_attach_driver+0x5b8/0x790 [ 112.953119][ T4948] bus_for_each_drv+0x28e/0x3b0 [ 112.957963][ T4948] ? deferred_probe_work_func+0x400/0x400 [ 112.963693][ T4948] __device_attach+0x489/0x750 [ 112.968459][ T4948] device_initial_probe+0x4a/0x60 [ 112.973483][ T4948] bus_probe_device+0x131/0x390 [ 112.978339][ T4948] device_add+0x25b5/0x2df0 [ 112.982947][ T4948] usb_new_device+0x23e5/0x2fb0 [ 112.987851][ T4948] hub_event+0x5853/0x7320 [ 112.992319][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 112.998203][ T4948] ? led_work+0x720/0x720 [ 113.002525][ T4948] ? led_work+0x720/0x720 [ 113.006852][ T4948] process_one_work+0x1572/0x1f00 [ 113.011887][ T4948] worker_thread+0x111b/0x2460 [ 113.016681][ T4948] kthread+0x4b5/0x4f0 [ 113.020765][ T4948] ? process_one_work+0x1f00/0x1f00 [ 113.026185][ T4948] ? kthread_blkcg+0xf0/0xf0 [ 113.030775][ T4948] ret_from_fork+0x35/0x40 [ 113.035191][ T4948] [ 113.037606][ T4948] Uninit was created at: [ 113.041857][ T4948] kmsan_internal_poison_shadow+0x53/0xa0 [ 113.047600][ T4948] kmsan_slab_alloc+0xaa/0x120 [ 113.052384][ T4948] kmem_cache_alloc_trace+0x873/0xa50 [ 113.058230][ T4948] pcan_usb_fd_init+0x446/0x1900 [ 113.063184][ T4948] peak_usb_probe+0x1416/0x1b20 [ 113.068563][ T4948] usb_probe_interface+0xd19/0x1310 [ 113.073781][ T4948] really_probe+0x1344/0x1d90 [ 113.078480][ T4948] driver_probe_device+0x1ba/0x510 [ 113.083619][ T4948] __device_attach_driver+0x5b8/0x790 [ 113.089014][ T4948] bus_for_each_drv+0x28e/0x3b0 [ 113.093885][ T4948] __device_attach+0x489/0x750 [ 113.098686][ T4948] device_initial_probe+0x4a/0x60 [ 113.103735][ T4948] bus_probe_device+0x131/0x390 [ 113.108602][ T4948] device_add+0x25b5/0x2df0 [ 113.113127][ T4948] usb_set_configuration+0x309f/0x3710 [ 113.118600][ T4948] generic_probe+0xe7/0x280 [ 113.123125][ T4948] usb_probe_device+0x146/0x200 [ 113.128005][ T4948] really_probe+0x1344/0x1d90 [ 113.132709][ T4948] driver_probe_device+0x1ba/0x510 [ 113.138356][ T4948] __device_attach_driver+0x5b8/0x790 [ 113.143748][ T4948] bus_for_each_drv+0x28e/0x3b0 [ 113.149012][ T4948] __device_attach+0x489/0x750 [ 113.153800][ T4948] device_initial_probe+0x4a/0x60 [ 113.158842][ T4948] bus_probe_device+0x131/0x390 [ 113.163710][ T4948] device_add+0x25b5/0x2df0 [ 113.168230][ T4948] usb_new_device+0x23e5/0x2fb0 [ 113.173100][ T4948] hub_event+0x5853/0x7320 [ 113.177537][ T4948] process_one_work+0x1572/0x1f00 [ 113.182580][ T4948] worker_thread+0x111b/0x2460 [ 113.187374][ T4948] kthread+0x4b5/0x4f0 [ 113.191459][ T4948] ret_from_fork+0x35/0x40 [ 113.195872][ T4948] [ 113.198212][ T4948] Bytes 2-15 of 16 are uninitialized [ 113.203496][ T4948] Memory access of size 16 starts at ffff888105c67800 [ 113.210280][ T4948] ================================================================== [ 113.218342][ T4948] Disabling lock debugging due to kernel taint [ 113.224498][ T4948] Kernel panic - not syncing: panic_on_warn set ... [ 113.231101][ T4948] CPU: 1 PID: 4948 Comm: kworker/1:2 Tainted: G B 5.2.0+ #15 [ 113.239772][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.249858][ T4948] Workqueue: usb_hub_wq hub_event [ 113.254899][ T4948] Call Trace: [ 113.258222][ T4948] dump_stack+0x191/0x1f0 [ 113.262584][ T4948] panic+0x3c9/0xc1e [ 113.266885][ T4948] kmsan_report+0x2ca/0x2d0 [ 113.271436][ T4948] kmsan_internal_check_memory+0x974/0xa80 [ 113.277262][ T4948] ? usb_new_device+0x23e5/0x2fb0 [ 113.282408][ T4948] ? hub_event+0x5853/0x7320 [ 113.287011][ T4948] ? process_one_work+0x1572/0x1f00 [ 113.292220][ T4948] ? worker_thread+0x111b/0x2460 [ 113.297176][ T4948] ? ret_from_fork+0x35/0x40 [ 113.301791][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.307714][ T4948] kmsan_handle_urb+0x28/0x40 [ 113.312499][ T4948] usb_submit_urb+0x7ef/0x1f50 [ 113.317330][ T4948] usb_start_wait_urb+0x143/0x410 [ 113.322393][ T4948] usb_control_msg+0x49f/0x7f0 [ 113.327203][ T4948] pcan_usb_pro_send_req+0x26b/0x3e0 [ 113.332528][ T4948] pcan_usb_fd_init+0x16ee/0x1900 [ 113.337627][ T4948] ? pcan_usb_pro_set_ts+0x490/0x490 [ 113.342937][ T4948] peak_usb_probe+0x1416/0x1b20 [ 113.347934][ T4948] ? peak_usb_do_device_exit+0x240/0x240 [ 113.353606][ T4948] usb_probe_interface+0xd19/0x1310 [ 113.358856][ T4948] ? usb_register_driver+0x7d0/0x7d0 [ 113.364167][ T4948] really_probe+0x1344/0x1d90 [ 113.369339][ T4948] driver_probe_device+0x1ba/0x510 [ 113.374480][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.380577][ T4948] __device_attach_driver+0x5b8/0x790 [ 113.385994][ T4948] bus_for_each_drv+0x28e/0x3b0 [ 113.390964][ T4948] ? deferred_probe_work_func+0x400/0x400 [ 113.396812][ T4948] __device_attach+0x489/0x750 [ 113.401614][ T4948] device_initial_probe+0x4a/0x60 [ 113.406677][ T4948] bus_probe_device+0x131/0x390 [ 113.411585][ T4948] device_add+0x25b5/0x2df0 [ 113.416586][ T4948] usb_set_configuration+0x309f/0x3710 [ 113.422116][ T4948] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 113.428250][ T4948] generic_probe+0xe7/0x280 [ 113.432780][ T4948] ? usb_choose_configuration+0xae0/0xae0 [ 113.438528][ T4948] usb_probe_device+0x146/0x200 [ 113.443406][ T4948] ? usb_register_device_driver+0x470/0x470 [ 113.449321][ T4948] really_probe+0x1344/0x1d90 [ 113.454045][ T4948] driver_probe_device+0x1ba/0x510 [ 113.459186][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.465869][ T4948] __device_attach_driver+0x5b8/0x790 [ 113.471723][ T4948] bus_for_each_drv+0x28e/0x3b0 [ 113.476589][ T4948] ? deferred_probe_work_func+0x400/0x400 [ 113.482334][ T4948] __device_attach+0x489/0x750 [ 113.487225][ T4948] device_initial_probe+0x4a/0x60 [ 113.492274][ T4948] bus_probe_device+0x131/0x390 [ 113.497159][ T4948] device_add+0x25b5/0x2df0 [ 113.501889][ T4948] usb_new_device+0x23e5/0x2fb0 [ 113.506797][ T4948] hub_event+0x5853/0x7320 [ 113.511319][ T4948] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 113.517237][ T4948] ? led_work+0x720/0x720 [ 113.521583][ T4948] ? led_work+0x720/0x720 [ 113.525934][ T4948] process_one_work+0x1572/0x1f00 [ 113.531121][ T4948] worker_thread+0x111b/0x2460 [ 113.536035][ T4948] kthread+0x4b5/0x4f0 [ 113.540295][ T4948] ? process_one_work+0x1f00/0x1f00 [ 113.545525][ T4948] ? kthread_blkcg+0xf0/0xf0 [ 113.550232][ T4948] ret_from_fork+0x35/0x40 [ 113.557319][ T4948] Kernel Offset: disabled [ 113.567390][ T4948] Rebooting in 86400 seconds..