[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.226512][ T30] audit: type=1800 audit(1569772004.273:25): pid=11643 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.249480][ T30] audit: type=1800 audit(1569772004.293:26): pid=11643 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 78.286465][ T30] audit: type=1800 audit(1569772004.323:27): pid=11643 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 '10.128.0.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 90.746124][T11795] IPVS: ftp: loaded support on port[0] = 21 [ 91.062565][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 91.302521][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 91.422737][ T12] usb 1-1: config 0 has an invalid interface number: 128 but max is 0 [ 91.430978][ T12] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 91.441229][ T12] usb 1-1: config 0 has no interface number 0 [ 91.447468][ T12] usb 1-1: config 0 interface 128 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 91.458703][ T12] usb 1-1: New USB device found, idVendor=12cf, idProduct=7111, bcdDevice=48.08 [ 91.467934][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 91.477794][ T12] usb 1-1: config 0 descriptor?? [ 91.742654][ T12] radio-si470x 1-1:0.128: DeviceID=0x31b4 ChipID=0xb480 [ 91.962690][ T12] radio-si470x 1-1:0.128: software version 49, hardware version 180 [ 92.182602][ T12] radio-si470x 1-1:0.128: si470x_set_report: usb_control_msg returned -71 [ 92.202530][ C0] radio-si470x 1-1:0.128: non-zero urb status (-71) [ 92.210411][ T12] radio-si470x 1-1:0.128: si470x_set_report: usb_control_msg returned -71 [ 92.219263][ T12] radio-si470x: probe of 1-1:0.128 failed with error -22 [ 92.226525][ C0] usb 1-1:0.128: non-zero urb status (-71) [ 92.234867][ T12] usb 1-1: USB disconnect, device number 2 [ 92.241683][ T12] ===================================================== [ 92.248640][ T12] BUG: KMSAN: uninit-value in usb_disable_device+0xfee/0x1150 [ 92.256207][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc7+ #0 [ 92.263559][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.273606][ T12] Workqueue: usb_hub_wq hub_event [ 92.278610][ T12] Call Trace: [ 92.281888][ T12] dump_stack+0x191/0x1f0 [ 92.286208][ T12] kmsan_report+0x13a/0x2b0 [ 92.290716][ T12] __msan_warning+0x73/0xe0 [ 92.295217][ T12] usb_hcd_flush_endpoint+0x320/0x570 [ 92.300579][ T12] usb_disable_device+0xfee/0x1150 [ 92.305695][ T12] usb_disconnect+0x51e/0xd60 [ 92.310482][ T12] hub_event+0x3fd0/0x72f0 [ 92.314908][ T12] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 92.320796][ T12] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 92.326776][ T12] ? led_work+0x720/0x720 [ 92.331096][ T12] ? led_work+0x720/0x720 [ 92.335451][ T12] process_one_work+0x1572/0x1ef0 [ 92.340482][ T12] worker_thread+0x189c/0x2460 [ 92.345253][ T12] kthread+0x4b5/0x4f0 [ 92.349300][ T12] ? process_one_work+0x1ef0/0x1ef0 [ 92.354505][ T12] ? kthread_blkcg+0xf0/0xf0 [ 92.359078][ T12] ret_from_fork+0x35/0x40 [ 92.363475][ T12] [ 92.365794][ T12] Uninit was stored to memory at: [ 92.370806][ T12] kmsan_internal_chain_origin+0xd2/0x170 [ 92.376507][ T12] __msan_chain_origin+0x6b/0xe0 [ 92.381435][ T12] usb_hcd_link_urb_to_ep+0x47d/0x520 [ 92.386784][ T12] dummy_urb_enqueue+0x581/0xe10 [ 92.391701][ T12] usb_hcd_submit_urb+0x672/0x38d0 [ 92.396794][ T12] usb_submit_urb+0x1ef3/0x1f50 [ 92.401635][ T12] si470x_int_in_callback+0x3f7/0x1010 [ 92.407206][ T12] __usb_hcd_giveback_urb+0x4a7/0x630 [ 92.412560][ T12] usb_hcd_giveback_urb+0x189/0x670 [ 92.417738][ T12] dummy_timer+0xab0/0x6770 [ 92.422230][ T12] call_timer_fn+0x232/0x530 [ 92.426799][ T12] __run_timers+0xcdc/0x11a0 [ 92.431429][ T12] run_timer_softirq+0x2d/0x50 [ 92.436199][ T12] __do_softirq+0x4a1/0x83a [ 92.440771][ T12] irq_exit+0x230/0x280 [ 92.444923][ T12] exiting_irq+0xe/0x10 [ 92.449066][ T12] smp_apic_timer_interrupt+0x48/0x70 [ 92.454434][ T12] apic_timer_interrupt+0x2e/0x40 [ 92.459455][ T12] console_unlock+0x191b/0x1cb0 [ 92.464289][ T12] vprintk_emit+0x45b/0x8f0 [ 92.468869][ T12] vprintk_default+0x90/0xa0 [ 92.473451][ T12] vprintk_func+0x635/0x810 [ 92.477945][ T12] printk+0x180/0x1c3 [ 92.481909][ T12] really_probe+0x1b57/0x1dc0 [ 92.486568][ T12] driver_probe_device+0x1ba/0x510 [ 92.491661][ T12] __device_attach_driver+0x5b8/0x790 [ 92.497023][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.501852][ T12] __device_attach+0x489/0x750 [ 92.506597][ T12] device_initial_probe+0x4a/0x60 [ 92.511597][ T12] bus_probe_device+0x131/0x390 [ 92.516439][ T12] device_add+0x25b5/0x2df0 [ 92.520960][ T12] usb_set_configuration+0x309f/0x3710 [ 92.526402][ T12] generic_probe+0xe7/0x280 [ 92.530888][ T12] usb_probe_device+0x146/0x200 [ 92.535723][ T12] really_probe+0x1373/0x1dc0 [ 92.540381][ T12] driver_probe_device+0x1ba/0x510 [ 92.545472][ T12] __device_attach_driver+0x5b8/0x790 [ 92.550820][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.555650][ T12] __device_attach+0x489/0x750 [ 92.560394][ T12] device_initial_probe+0x4a/0x60 [ 92.565398][ T12] bus_probe_device+0x131/0x390 [ 92.570227][ T12] device_add+0x25b5/0x2df0 [ 92.574706][ T12] usb_new_device+0x23e5/0x2fb0 [ 92.579537][ T12] hub_event+0x581d/0x72f0 [ 92.583944][ T12] process_one_work+0x1572/0x1ef0 [ 92.588974][ T12] worker_thread+0x111b/0x2460 [ 92.594238][ T12] kthread+0x4b5/0x4f0 [ 92.598292][ T12] ret_from_fork+0x35/0x40 [ 92.602861][ T12] [ 92.605221][ T12] Uninit was created at: [ 92.609801][ T12] kmsan_internal_poison_shadow+0x53/0x100 [ 92.615615][ T12] kmsan_slab_free+0x8d/0x100 [ 92.620358][ T12] kfree+0x4c1/0x2db0 [ 92.624336][ T12] si470x_usb_driver_probe+0xa6f/0x3200 [ 92.629973][ T12] usb_probe_interface+0xd19/0x1310 [ 92.635193][ T12] really_probe+0x1373/0x1dc0 [ 92.639897][ T12] driver_probe_device+0x1ba/0x510 [ 92.645211][ T12] __device_attach_driver+0x5b8/0x790 [ 92.650587][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.655423][ T12] __device_attach+0x489/0x750 [ 92.660168][ T12] device_initial_probe+0x4a/0x60 [ 92.665172][ T12] bus_probe_device+0x131/0x390 [ 92.670066][ T12] device_add+0x25b5/0x2df0 [ 92.674573][ T12] usb_set_configuration+0x309f/0x3710 [ 92.680026][ T12] generic_probe+0xe7/0x280 [ 92.684537][ T12] usb_probe_device+0x146/0x200 [ 92.689383][ T12] really_probe+0x1373/0x1dc0 [ 92.694058][ T12] driver_probe_device+0x1ba/0x510 [ 92.699352][ T12] __device_attach_driver+0x5b8/0x790 [ 92.704803][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.709739][ T12] __device_attach+0x489/0x750 [ 92.714530][ T12] device_initial_probe+0x4a/0x60 [ 92.719625][ T12] bus_probe_device+0x131/0x390 [ 92.724549][ T12] device_add+0x25b5/0x2df0 [ 92.729047][ T12] usb_new_device+0x23e5/0x2fb0 [ 92.733899][ T12] hub_event+0x581d/0x72f0 [ 92.738465][ T12] process_one_work+0x1572/0x1ef0 [ 92.743614][ T12] worker_thread+0x111b/0x2460 [ 92.748375][ T12] kthread+0x4b5/0x4f0 [ 92.752439][ T12] ret_from_fork+0x35/0x40 [ 92.756848][ T12] ===================================================== [ 92.763939][ T12] Disabling lock debugging due to kernel taint [ 92.770069][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 92.776652][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.3.0-rc7+ #0 [ 92.785412][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.796414][ T12] Workqueue: usb_hub_wq hub_event [ 92.801422][ T12] Call Trace: [ 92.805274][ T12] dump_stack+0x191/0x1f0 [ 92.809609][ T12] panic+0x3c9/0xc1e [ 92.813528][ T12] kmsan_report+0x2a2/0x2b0 [ 92.818042][ T12] __msan_warning+0x73/0xe0 [ 92.822550][ T12] usb_hcd_flush_endpoint+0x320/0x570 [ 92.827921][ T12] usb_disable_device+0xfee/0x1150 [ 92.833025][ T12] usb_disconnect+0x51e/0xd60 [ 92.837690][ T12] hub_event+0x3fd0/0x72f0 [ 92.842286][ T12] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 92.848187][ T12] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 92.854069][ T12] ? led_work+0x720/0x720 [ 92.858385][ T12] ? led_work+0x720/0x720 [ 92.862702][ T12] process_one_work+0x1572/0x1ef0 [ 92.867721][ T12] worker_thread+0x189c/0x2460 [ 92.872499][ T12] kthread+0x4b5/0x4f0 [ 92.876552][ T12] ? process_one_work+0x1ef0/0x1ef0 [ 92.881732][ T12] ? kthread_blkcg+0xf0/0xf0 [ 92.886311][ T12] ret_from_fork+0x35/0x40 [ 92.893675][ T12] Kernel Offset: disabled [ 92.898243][ T12] Rebooting in 86400 seconds..