[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 76.753504][ T31] audit: type=1800 audit(1570361605.796:25): pid=11151 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 76.776357][ T31] audit: type=1800 audit(1570361605.826:26): pid=11151 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 76.811775][ T31] audit: type=1800 audit(1570361605.846:27): pid=11151 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 '10.128.15.207' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 88.776698][T11302] IPVS: ftp: loaded support on port[0] = 21 [ 89.093868][ T868] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 89.333684][ T868] usb 1-1: Using ep0 maxpacket: 16 [ 89.453869][ T868] usb 1-1: config 0 has an invalid interface number: 128 but max is 0 [ 89.462085][ T868] usb 1-1: config 0 has an invalid descriptor of length 255, skipping remainder of the config [ 89.472496][ T868] usb 1-1: config 0 has no interface number 0 [ 89.478673][ T868] usb 1-1: config 0 interface 128 altsetting 0 endpoint 0x84 has an invalid bInterval 255, changing to 11 [ 89.492515][ T868] usb 1-1: New USB device found, idVendor=12cf, idProduct=7111, bcdDevice=48.08 [ 89.501620][ T868] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 89.511034][ T868] usb 1-1: config 0 descriptor?? [ 89.773879][ T868] radio-si470x 1-1:0.128: DeviceID=0xc07f ChipID=0x0881 [ 89.993855][ T868] radio-si470x 1-1:0.128: software version 192, hardware version 127 [ 90.213825][ T868] radio-si470x 1-1:0.128: si470x_set_report: usb_control_msg returned -71 [ 90.233738][ C0] radio-si470x 1-1:0.128: non-zero urb status (-71) [ 90.241288][ T868] radio-si470x 1-1:0.128: si470x_set_report: usb_control_msg returned -71 [ 90.250150][ T868] radio-si470x: probe of 1-1:0.128 failed with error -22 [ 90.257396][ C0] usb 1-1:0.128: non-zero urb status (-71) [ 90.265642][ T868] usb 1-1: USB disconnect, device number 2 [ 90.272439][ T868] ===================================================== [ 90.279382][ T868] BUG: KMSAN: uninit-value in usb_disable_device+0xfee/0x1150 [ 90.286814][ T868] CPU: 0 PID: 868 Comm: kworker/0:2 Not tainted 5.3.0-rc7+ #0 [ 90.294239][ T868] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.304282][ T868] Workqueue: usb_hub_wq hub_event [ 90.309281][ T868] Call Trace: [ 90.312553][ T868] dump_stack+0x191/0x1f0 [ 90.316869][ T868] kmsan_report+0x13a/0x2b0 [ 90.321351][ T868] __msan_warning+0x73/0xe0 [ 90.325837][ T868] usb_hcd_flush_endpoint+0x320/0x570 [ 90.331190][ T868] usb_disable_device+0xfee/0x1150 [ 90.336344][ T868] usb_disconnect+0x51e/0xd60 [ 90.341008][ T868] hub_event+0x3fd0/0x72f0 [ 90.345424][ T868] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 90.351303][ T868] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 90.357171][ T868] ? led_work+0x720/0x720 [ 90.361473][ T868] ? led_work+0x720/0x720 [ 90.365781][ T868] process_one_work+0x1572/0x1ef0 [ 90.370793][ T868] worker_thread+0x189c/0x2460 [ 90.375556][ T868] kthread+0x4b5/0x4f0 [ 90.379603][ T868] ? process_one_work+0x1ef0/0x1ef0 [ 90.384792][ T868] ? kthread_blkcg+0xf0/0xf0 [ 90.389360][ T868] ret_from_fork+0x35/0x40 [ 90.393753][ T868] [ 90.396056][ T868] Uninit was stored to memory at: [ 90.401067][ T868] kmsan_internal_chain_origin+0xd2/0x170 [ 90.406761][ T868] __msan_chain_origin+0x6b/0xe0 [ 90.411673][ T868] usb_hcd_link_urb_to_ep+0x47d/0x520 [ 90.419548][ T868] dummy_urb_enqueue+0x581/0xe10 [ 90.424461][ T868] usb_hcd_submit_urb+0x672/0x38d0 [ 90.429545][ T868] usb_submit_urb+0x1ef3/0x1f50 [ 90.434372][ T868] si470x_int_in_callback+0x3f7/0x1010 [ 90.439803][ T868] __usb_hcd_giveback_urb+0x4a7/0x630 [ 90.445148][ T868] usb_hcd_giveback_urb+0x189/0x670 [ 90.450320][ T868] dummy_timer+0xab0/0x6770 [ 90.454799][ T868] call_timer_fn+0x232/0x530 [ 90.459360][ T868] __run_timers+0xcdc/0x11a0 [ 90.463924][ T868] run_timer_softirq+0x2d/0x50 [ 90.468665][ T868] __do_softirq+0x4a1/0x83a [ 90.473141][ T868] irq_exit+0x230/0x280 [ 90.477273][ T868] exiting_irq+0xe/0x10 [ 90.481402][ T868] smp_apic_timer_interrupt+0x48/0x70 [ 90.486760][ T868] apic_timer_interrupt+0x2e/0x40 [ 90.491756][ T868] console_unlock+0x191b/0x1cb0 [ 90.496580][ T868] vprintk_emit+0x45b/0x8f0 [ 90.501057][ T868] vprintk_default+0x90/0xa0 [ 90.505639][ T868] vprintk_func+0x635/0x810 [ 90.510114][ T868] printk+0x180/0x1c3 [ 90.514070][ T868] really_probe+0x1b57/0x1dc0 [ 90.518719][ T868] driver_probe_device+0x1ba/0x510 [ 90.523803][ T868] __device_attach_driver+0x5b8/0x790 [ 90.529158][ T868] bus_for_each_drv+0x28e/0x3b0 [ 90.533981][ T868] __device_attach+0x489/0x750 [ 90.538719][ T868] device_initial_probe+0x4a/0x60 [ 90.543718][ T868] bus_probe_device+0x131/0x390 [ 90.548544][ T868] device_add+0x25b5/0x2df0 [ 90.553021][ T868] usb_set_configuration+0x309f/0x3710 [ 90.558452][ T868] generic_probe+0xe7/0x280 [ 90.562926][ T868] usb_probe_device+0x146/0x200 [ 90.567754][ T868] really_probe+0x1373/0x1dc0 [ 90.572418][ T868] driver_probe_device+0x1ba/0x510 [ 90.577504][ T868] __device_attach_driver+0x5b8/0x790 [ 90.582850][ T868] bus_for_each_drv+0x28e/0x3b0 [ 90.587685][ T868] __device_attach+0x489/0x750 [ 90.592432][ T868] device_initial_probe+0x4a/0x60 [ 90.597440][ T868] bus_probe_device+0x131/0x390 [ 90.602263][ T868] device_add+0x25b5/0x2df0 [ 90.606750][ T868] usb_new_device+0x23e5/0x2fb0 [ 90.611581][ T868] hub_event+0x581d/0x72f0 [ 90.615972][ T868] process_one_work+0x1572/0x1ef0 [ 90.620985][ T868] worker_thread+0x111b/0x2460 [ 90.625722][ T868] kthread+0x4b5/0x4f0 [ 90.629776][ T868] ret_from_fork+0x35/0x40 [ 90.634159][ T868] [ 90.636459][ T868] Uninit was created at: [ 90.640676][ T868] kmsan_internal_poison_shadow+0x53/0x100 [ 90.646453][ T868] kmsan_slab_free+0x8d/0x100 [ 90.651102][ T868] kfree+0x4c1/0x2db0 [ 90.655058][ T868] si470x_usb_driver_probe+0xa6f/0x3200 [ 90.660839][ T868] usb_probe_interface+0xd19/0x1310 [ 90.666013][ T868] really_probe+0x1373/0x1dc0 [ 90.670662][ T868] driver_probe_device+0x1ba/0x510 [ 90.675746][ T868] __device_attach_driver+0x5b8/0x790 [ 90.681100][ T868] bus_for_each_drv+0x28e/0x3b0 [ 90.685924][ T868] __device_attach+0x489/0x750 [ 90.690663][ T868] device_initial_probe+0x4a/0x60 [ 90.695662][ T868] bus_probe_device+0x131/0x390 [ 90.700486][ T868] device_add+0x25b5/0x2df0 [ 90.704970][ T868] usb_set_configuration+0x309f/0x3710 [ 90.710403][ T868] generic_probe+0xe7/0x280 [ 90.715838][ T868] usb_probe_device+0x146/0x200 [ 90.720660][ T868] really_probe+0x1373/0x1dc0 [ 90.725310][ T868] driver_probe_device+0x1ba/0x510 [ 90.730394][ T868] __device_attach_driver+0x5b8/0x790 [ 90.735740][ T868] bus_for_each_drv+0x28e/0x3b0 [ 90.740565][ T868] __device_attach+0x489/0x750 [ 90.745305][ T868] device_initial_probe+0x4a/0x60 [ 90.750306][ T868] bus_probe_device+0x131/0x390 [ 90.755129][ T868] device_add+0x25b5/0x2df0 [ 90.759604][ T868] usb_new_device+0x23e5/0x2fb0 [ 90.764428][ T868] hub_event+0x581d/0x72f0 [ 90.768820][ T868] process_one_work+0x1572/0x1ef0 [ 90.773819][ T868] worker_thread+0x111b/0x2460 [ 90.778555][ T868] kthread+0x4b5/0x4f0 [ 90.782598][ T868] ret_from_fork+0x35/0x40 [ 90.786988][ T868] ===================================================== [ 90.793891][ T868] Disabling lock debugging due to kernel taint [ 90.800014][ T868] Kernel panic - not syncing: panic_on_warn set ... [ 90.806580][ T868] CPU: 0 PID: 868 Comm: kworker/0:2 Tainted: G B 5.3.0-rc7+ #0 [ 90.816705][ T868] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.826740][ T868] Workqueue: usb_hub_wq hub_event [ 90.831736][ T868] Call Trace: [ 90.835019][ T868] dump_stack+0x191/0x1f0 [ 90.839330][ T868] panic+0x3c9/0xc1e [ 90.843236][ T868] kmsan_report+0x2a2/0x2b0 [ 90.847734][ T868] __msan_warning+0x73/0xe0 [ 90.852236][ T868] usb_hcd_flush_endpoint+0x320/0x570 [ 90.858114][ T868] usb_disable_device+0xfee/0x1150 [ 90.863219][ T868] usb_disconnect+0x51e/0xd60 [ 90.867885][ T868] hub_event+0x3fd0/0x72f0 [ 90.872299][ T868] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 90.878180][ T868] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 90.884049][ T868] ? led_work+0x720/0x720 [ 90.888355][ T868] ? led_work+0x720/0x720 [ 90.892759][ T868] process_one_work+0x1572/0x1ef0 [ 90.897796][ T868] worker_thread+0x189c/0x2460 [ 90.902560][ T868] kthread+0x4b5/0x4f0 [ 90.906624][ T868] ? process_one_work+0x1ef0/0x1ef0 [ 90.911844][ T868] ? kthread_blkcg+0xf0/0xf0 [ 90.916413][ T868] ret_from_fork+0x35/0x40 [ 90.922133][ T868] Kernel Offset: disabled [ 90.926456][ T868] Rebooting in 86400 seconds..