[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 94.168745][ T31] audit: type=1800 audit(1562061511.229:25): pid=12335 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 94.193989][ T31] audit: type=1800 audit(1562061511.259:26): pid=12335 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 94.231248][ T31] audit: type=1800 audit(1562061511.279:27): pid=12335 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 '10.128.0.116' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 105.342349][ T3359] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 105.582318][ T3359] usb 1-1: Using ep0 maxpacket: 8 [ 105.702398][ T3359] usb 1-1: config 0 has an invalid interface number: 146 but max is 0 [ 105.710682][ T3359] usb 1-1: config 0 has no interface number 0 [ 105.716935][ T3359] usb 1-1: New USB device found, idVendor=0c72, idProduct=0014, bcdDevice=8b.53 [ 105.726159][ T3359] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 105.736059][ T3359] usb 1-1: config 0 descriptor?? [ 105.972282][ T3359] peak_usb 1-1:0.146: PEAK-System PCAN-USB X6 v0 fw v0.0.0 (2 channels) [ 105.980785][ T3359] ================================================================== [ 105.988858][ T3359] BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x7ef/0x1f50 [ 105.996564][ T3359] CPU: 0 PID: 3359 Comm: kworker/0:2 Not tainted 5.2.0-rc4+ #7 [ 106.004086][ T3359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.014257][ T3359] Workqueue: usb_hub_wq hub_event [ 106.019267][ T3359] Call Trace: [ 106.022571][ T3359] dump_stack+0x191/0x1f0 [ 106.026897][ T3359] kmsan_report+0x162/0x2d0 [ 106.031400][ T3359] kmsan_internal_check_memory+0x974/0xa80 [ 106.037215][ T3359] ? usb_new_device+0x23e5/0x2fb0 [ 106.042227][ T3359] ? hub_event+0x5853/0x7320 [ 106.046805][ T3359] ? process_one_work+0x1572/0x1f00 [ 106.051984][ T3359] ? worker_thread+0x111b/0x2460 [ 106.056916][ T3359] ? ret_from_fork+0x35/0x40 [ 106.061502][ T3359] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 106.067590][ T3359] kmsan_handle_urb+0x28/0x40 [ 106.072255][ T3359] usb_submit_urb+0x7ef/0x1f50 [ 106.077014][ T3359] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 106.083089][ T3359] usb_start_wait_urb+0x143/0x410 [ 106.088315][ T3359] usb_control_msg+0x49f/0x7f0 [ 106.093277][ T3359] pcan_usb_pro_send_req+0x26b/0x3e0 [ 106.098584][ T3359] pcan_usb_fd_init+0x16ee/0x1900 [ 106.103615][ T3359] ? pcan_usb_pro_set_ts+0x490/0x490 [ 106.108994][ T3359] peak_usb_probe+0x1416/0x1b20 [ 106.113860][ T3359] ? peak_usb_do_device_exit+0x240/0x240 [ 106.119504][ T3359] usb_probe_interface+0xd19/0x1310 [ 106.124746][ T3359] ? usb_register_driver+0x7d0/0x7d0 [ 106.130053][ T3359] really_probe+0x1344/0x1d90 [ 106.134780][ T3359] driver_probe_device+0x1ba/0x510 [ 106.139916][ T3359] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 106.145839][ T3359] __device_attach_driver+0x5b8/0x790 [ 106.151340][ T3359] bus_for_each_drv+0x28e/0x3b0 [ 106.156210][ T3359] ? deferred_probe_work_func+0x400/0x400 [ 106.161968][ T3359] __device_attach+0x489/0x750 [ 106.166779][ T3359] device_initial_probe+0x4a/0x60 [ 106.171829][ T