[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.686390][ T31] audit: type=1800 audit(1568801220.735:25): pid=12042 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.709179][ T31] audit: type=1800 audit(1568801220.755:26): pid=12042 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 78.745526][ T31] audit: type=1800 audit(1568801220.785:27): pid=12042 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 '10.128.0.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 90.542747][ T3369] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 90.782701][ T3369] usb 1-1: Using ep0 maxpacket: 16 [ 90.902801][ T3369] usb 1-1: config 0 has an invalid interface number: 48 but max is 0 [ 90.910989][ T3369] usb 1-1: config 0 has no interface number 0 [ 90.917256][ T3369] usb 1-1: New USB device found, idVendor=2001, idProduct=3c00, bcdDevice=66.7a [ 90.926362][ T3369] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.935684][ T3369] usb 1-1: config 0 descriptor?? executing program [ 91.122718][ T3369] usb 1-1: reset high-speed USB device number 2 using dummy_hcd [ 91.592697][ T3369] usb 1-1: device descriptor read/64, error -71 [ 91.952666][ T3369] usb 1-1: Using ep0 maxpacket: 16 executing program [ 92.352996][ T3369] ieee80211 phy3: rt2x00usb_vendor_request: Error - Vendor Request 0x09 failed for offset 0x0000 with error -71 [ 92.365238][ T3369] ieee80211 phy3: rt2x00_set_chip: Info - Chipset detected - rt: 2570, rf: 0000, rev: 8771 [ 92.375286][ T3369] ================================================================== [ 92.383535][ T3369] BUG: KMSAN: uninit-value in rt2500usb_probe_hw+0xb5e/0x22a0 [ 92.391523][ T3369] CPU: 0 PID: 3369 Comm: kworker/0:2 Not tainted 5.3.0-rc7+ #0 [ 92.399099][ T3369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.409158][ T3369] Workqueue: usb_hub_wq hub_event [ 92.414162][ T3369] Call Trace: [ 92.417443][ T3369] dump_stack+0x191/0x1f0 [ 92.421761][ T3369] kmsan_report+0x162/0x2d0 [ 92.426250][ T3369] __msan_warning+0x75/0xe0 [ 92.430734][ T3369] rt2500usb_probe_hw+0xb5e/0x22a0 [ 92.435845][ T3369] ? mca_alloc+0xf5f/0x1d40 [ 92.440349][ T3369] ? rt2500usb_queue_init+0x1e0/0x1e0 [ 92.445709][ T3369] ? rt2500usb_queue_init+0x1e0/0x1e0 [ 92.451152][ T3369] rt2x00lib_probe_dev+0xba9/0x3260 [ 92.456336][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.462210][ T3369] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 92.468357][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.474248][ T3369] rt2x00usb_probe+0x7ae/0xf60 [ 92.479006][ T3369] ? rt2800_brightness_set+0xf20/0xf20 [ 92.484450][ T3369] rt2500usb_probe+0x50/0x60 [ 92.489017][ T3369] ? rt2800_brightness_set+0xf20/0xf20 [ 92.494459][ T3369] usb_probe_interface+0xd19/0x1310 [ 92.499656][ T3369] ? usb_register_driver+0x7d0/0x7d0 [ 92.504920][ T3369] really_probe+0x1373/0x1dc0 [ 92.509581][ T3369] driver_probe_device+0x1ba/0x510 [ 92.514730][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.520606][ T3369] __device_attach_driver+0x5b8/0x790 [ 92.525965][ T3369] bus_for_each_drv+0x28e/0x3b0 [ 92.530798][ T3369] ? deferred_probe_work_func+0x400/0x400 [ 92.536510][ T3369] __device_attach+0x489/0x750 [ 92.541262][ T3369] device_initial_probe+0x4a/0x60 [ 92.546271][ T3369] bus_probe_device+0x131/0x390 [ 92.551104][ T3369] device_add+0x25b5/0x2df0 [ 92.555600][ T3369] usb_set_configuration+0x309f/0x3710 [ 92.561050][ T3369] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 92.567106][ T3369] generic_probe+0xe7/0x280 [ 92.572559][ T3369] ? usb_choose_configuration+0xae0/0xae0 [ 92.578266][ T3369] usb_probe_device+0x146/0x200 [ 92.583109][ T3369] ? usb_register_device_driver+0x470/0x470 [ 92.588986][ T3369] really_probe+0x1373/0x1dc0 [ 92.593650][ T3369] driver_probe_device+0x1ba/0x510 [ 92.598755][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.604644][ T3369] __device_attach_driver+0x5b8/0x790 [ 92.610004][ T3369] bus_for_each_drv+0x28e/0x3b0 [ 92.614836][ T3369] ? deferred_probe_work_func+0x400/0x400 [ 92.620537][ T3369] __device_attach+0x489/0x750 [ 92.625287][ T3369] device_initial_probe+0x4a/0x60 [ 92.630355][ T3369] bus_probe_device+0x131/0x390 [ 92.635204][ T3369] device_add+0x25b5/0x2df0 [ 92.639709][ T3369] usb_new_device+0x23e5/0x2fb0 [ 92.644558][ T3369] hub_event+0x581d/0x72f0 [ 92.648987][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.654871][ T3369] ? led_work+0x720/0x720 [ 92.659192][ T3369] ? led_work+0x720/0x720 [ 92.663506][ T3369] process_one_work+0x1572/0x1ef0 [ 92.668521][ T3369] worker_thread+0x111b/0x2460 [ 92.673278][ T3369] kthread+0x4b5/0x4f0 [ 92.677326][ T3369] ? process_one_work+0x1ef0/0x1ef0 [ 92.682520][ T3369] ? kthread_blkcg+0xf0/0xf0 [ 92.687106][ T3369] ret_from_fork+0x35/0x40 [ 92.691502][ T3369] [ 92.693842][ T3369] Local variable description: ----reg.i.i@rt2500usb_probe_hw [ 92.701189][ T3369] Variable was created at: [ 92.705593][ T3369] rt2500usb_probe_hw+0x774/0x22a0 [ 92.710698][ T3369] rt2x00lib_probe_dev+0xba9/0x3260 [ 92.715869][ T3369] ================================================================== [ 92.723906][ T3369] Disabling lock debugging due to kernel taint [ 92.730037][ T3369] Kernel panic - not syncing: panic_on_warn set ... [ 92.736616][ T3369] CPU: 0 PID: 3369 Comm: kworker/0:2 Tainted: G B 5.3.0-rc7+ #0 [ 92.745544][ T3369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.755607][ T3369] Workqueue: usb_hub_wq hub_event [ 92.760617][ T3369] Call Trace: [ 92.763892][ T3369] dump_stack+0x191/0x1f0 [ 92.768209][ T3369] panic+0x3c9/0xc1e [ 92.772097][ T3369] kmsan_report+0x2ca/0x2d0 [ 92.776584][ T3369] __msan_warning+0x75/0xe0 [ 92.781077][ T3369] rt2500usb_probe_hw+0xb5e/0x22a0 [ 92.786173][ T3369] ? mca_alloc+0xf5f/0x1d40 [ 92.790663][ T3369] ? rt2500usb_queue_init+0x1e0/0x1e0 [ 92.796029][ T3369] ? rt2500usb_queue_init+0x1e0/0x1e0 [ 92.801396][ T3369] rt2x00lib_probe_dev+0xba9/0x3260 [ 92.806584][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.812462][ T3369] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 92.818621][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.824507][ T3369] rt2x00usb_probe+0x7ae/0xf60 [ 92.829258][ T3369] ? rt2800_brightness_set+0xf20/0xf20 [ 92.834698][ T3369] rt2500usb_probe+0x50/0x60 [ 92.839270][ T3369] ? rt2800_brightness_set+0xf20/0xf20 [ 92.844714][ T3369] usb_probe_interface+0xd19/0x1310 [ 92.849931][ T3369] ? usb_register_driver+0x7d0/0x7d0 [ 92.855204][ T3369] really_probe+0x1373/0x1dc0 [ 92.859870][ T3369] driver_probe_device+0x1ba/0x510 [ 92.864985][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.870860][ T3369] __device_attach_driver+0x5b8/0x790 [ 92.876231][ T3369] bus_for_each_drv+0x28e/0x3b0 [ 92.881079][ T3369] ? deferred_probe_work_func+0x400/0x400 [ 92.886794][ T3369] __device_attach+0x489/0x750 [ 92.891547][ T3369] device_initial_probe+0x4a/0x60 [ 92.896552][ T3369] bus_probe_device+0x131/0x390 [ 92.901387][ T3369] device_add+0x25b5/0x2df0 [ 92.905882][ T3369] usb_set_configuration+0x309f/0x3710 [ 92.911353][ T3369] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 92.917416][ T3369] generic_probe+0xe7/0x280 [ 92.921898][ T3369] ? usb_choose_configuration+0xae0/0xae0 [ 92.927596][ T3369] usb_probe_device+0x146/0x200 [ 92.932442][ T3369] ? usb_register_device_driver+0x470/0x470 [ 92.938318][ T3369] really_probe+0x1373/0x1dc0 [ 92.942983][ T3369] driver_probe_device+0x1ba/0x510 [ 92.948080][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 92.953970][ T3369] __device_attach_driver+0x5b8/0x790 [ 92.959339][ T3369] bus_for_each_drv+0x28e/0x3b0 [ 92.964187][ T3369] ? deferred_probe_work_func+0x400/0x400 [ 92.970044][ T3369] __device_attach+0x489/0x750 [ 92.974805][ T3369] device_initial_probe+0x4a/0x60 [ 92.979814][ T3369] bus_probe_device+0x131/0x390 [ 92.984654][ T3369] device_add+0x25b5/0x2df0 [ 92.989157][ T3369] usb_new_device+0x23e5/0x2fb0 [ 92.994005][ T3369] hub_event+0x581d/0x72f0 [ 92.998441][ T3369] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 93.004318][ T3369] ? led_work+0x720/0x720 [ 93.008631][ T3369] ? led_work+0x720/0x720 [ 93.012943][ T3369] process_one_work+0x1572/0x1ef0 [ 93.017962][ T3369] worker_thread+0x111b/0x2460 [ 93.022752][ T3369] kthread+0x4b5/0x4f0 [ 93.026799][ T3369] ? process_one_work+0x1ef0/0x1ef0 [ 93.031984][ T3369] ? kthread_blkcg+0xf0/0xf0 [ 93.036566][ T3369] ret_from_fork+0x35/0x40 [ 93.042450][ T3369] Kernel Offset: disabled [ 93.046808][ T3369] Rebooting in 86400 seconds..