[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 75.180601][ T32] audit: type=1800 audit(1567999317.228:25): pid=11366 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 75.203956][ T32] audit: type=1800 audit(1567999317.258:26): pid=11366 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 75.241807][ T32] audit: type=1800 audit(1567999317.278:27): pid=11366 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 '10.128.0.66' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 87.472613][T11517] IPVS: ftp: loaded support on port[0] = 21 [ 87.781854][ T3356] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 88.021782][ T3356] usb 1-1: Using ep0 maxpacket: 16 [ 88.141914][ T3356] usb 1-1: config 0 has an invalid interface number: 128 but max is 0 [ 88.150112][ T3356] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 88.160297][ T3356] usb 1-1: config 0 has no interface number 0 [ 88.166487][ T3356] usb 1-1: config 0 interface 128 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 88.177664][ T3356] usb 1-1: New USB device found, idVendor=12cf, idProduct=7111, bcdDevice=48.08 [ 88.186772][ T3356] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 88.196124][ T3356] usb 1-1: config 0 descriptor?? [ 88.452077][ T3356] radio-si470x 1-1:0.128: DeviceID=0x6014 ChipID=0xb180 [ 88.671836][ T3356] radio-si470x 1-1:0.128: software version 96, hardware version 20 [ 88.892002][ T3356] radio-si470x 1-1:0.128: si470x_set_report: usb_control_msg returned -71 [ 88.911845][ C0] radio-si470x 1-1:0.128: non-zero urb status (-71) [ 88.918774][ T3356] radio-si470x 1-1:0.128: si470x_set_report: usb_control_msg returned -71 [ 88.927900][ T3356] radio-si470x: probe of 1-1:0.128 failed with error -22 [ 88.935045][ C0] usb 1-1:0.128: non-zero urb status (-71) [ 88.943485][ T3356] usb 1-1: USB disconnect, device number 2 [ 88.950219][ T3356] ================================================================== [ 88.958287][ T3356] BUG: KMSAN: uninit-value in usb_hcd_flush_endpoint+0x320/0x570 [ 88.966116][ T3356] CPU: 0 PID: 3356 Comm: kworker/0:2 Not tainted 5.3.0-rc7+ #0 [ 88.973750][ T3356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.983783][ T3356] Workqueue: usb_hub_wq hub_event [ 88.988778][ T3356] Call Trace: [ 88.992045][ T3356] dump_stack+0x191/0x1f0 [ 88.996358][ T3356] kmsan_report+0x162/0x2d0 [ 89.000857][ T3356] __msan_warning+0x75/0xe0 [ 89.005358][ T3356] usb_hcd_flush_endpoint+0x320/0x570 [ 89.010709][ T3356] ? usb_disable_device+0xf8d/0x1150 [ 89.015979][ T3356] usb_disable_device+0xfee/0x1150 [ 89.021076][ T3356] usb_disconnect+0x51e/0xd60 [ 89.025748][ T3356] hub_event+0x3fd0/0x72f0 [ 89.030155][ T3356] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 89.036144][ T3356] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 89.042098][ T3356] ? led_work+0x720/0x720 [ 89.046402][ T3356] ? led_work+0x720/0x720 [ 89.050713][ T3356] process_one_work+0x1572/0x1ef0 [ 89.055728][ T3356] worker_thread+0x189c/0x2460 [ 89.060485][ T3356] kthread+0x4b5/0x4f0 [ 89.064544][ T3356] ? process_one_work+0x1ef0/0x1ef0 [ 89.069734][ T3356] ? kthread_blkcg+0xf0/0xf0 [ 89.074303][ T3356] ret_from_fork+0x35/0x40 [ 89.078698][ T3356] [ 89.080999][ T3356] Uninit was stored to memory at: [ 89.086022][ T3356] kmsan_internal_chain_origin+0xcc/0x150 [ 89.091714][ T3356] __msan_chain_origin+0x6b/0xe0 [ 89.096639][ T3356] usb_hcd_link_urb_to_ep+0x47d/0x520 [ 89.101994][ T3356] dummy_urb_enqueue+0x581/0xe10 [ 89.106956][ T3356] usb_hcd_submit_urb+0x672/0x38d0 [ 89.112043][ T3356] usb_submit_urb+0x1ef3/0x1f50 [ 89.116870][ T3356] si470x_int_in_callback+0x3f7/0x1010 [ 89.122307][ T3356] __usb_hcd_giveback_urb+0x4a7/0x630 [ 89.127649][ T3356] usb_hcd_giveback_urb+0x189/0x670 [ 89.132820][ T3356] dummy_timer+0xab0/0x6770 [ 89.137298][ T3356] call_timer_fn+0x232/0x530 [ 89.141870][ T3356] __run_timers+0xcdc/0x11a0 [ 89.146429][ T3356] run_timer_softirq+0x2d/0x50 [ 89.151181][ T3356] __do_softirq+0x4a1/0x83a [ 89.155657][ T3356] irq_exit+0x230/0x280 [ 89.159785][ T3356] exiting_irq+0xe/0x10 [ 89.163931][ T3356] smp_apic_timer_interrupt+0x48/0x70 [ 89.169287][ T3356] apic_timer_interrupt+0x2e/0x40 [ 89.174285][ T3356] console_unlock+0x191b/0x1cb0 [ 89.179134][ T3356] vprintk_emit+0x45b/0x8f0 [ 89.183611][ T3356] vprintk_default+0x90/0xa0 [ 89.188174][ T3356] vprintk_func+0x635/0x810 [ 89.192650][ T3356] printk+0x180/0x1c3 [ 89.196608][ T3356] really_probe+0x1b57/0x1dc0 [ 89.201260][ T3356] driver_probe_device+0x1ba/0x510 [ 89.206343][ T3356] __device_attach_driver+0x5b8/0x790 [ 89.211686][ T3356] bus_for_each_drv+0x28e/0x3b0 [ 89.216512][ T3356] __device_attach+0x489/0x750 [ 89.221263][ T3356] device_initial_probe+0x4a/0x60 [ 89.226272][ T3356] bus_probe_device+0x131/0x390 [ 89.231097][ T3356] device_add+0x25b5/0x2df0 [ 89.235575][ T3356] usb_set_configuration+0x309f/0x3710 [ 89.241023][ T3356] generic_probe+0xe7/0x280 [ 89.245501][ T3356] usb_probe_device+0x146/0x200 [ 89.250342][ T3356] really_probe+0x1373/0x1dc0 [ 89.254994][ T3356] driver_probe_device+0x1ba/0x510 [ 89.260090][ T3356] __device_attach_driver+0x5b8/0x790 [ 89.265437][ T3356] bus_for_each_drv+0x28e/0x3b0 [ 89.270286][ T3356] __device_attach+0x489/0x750 [ 89.275027][ T3356] device_initial_probe+0x4a/0x60 [ 89.280023][ T3356] bus_probe_device+0x131/0x390 [ 89.284848][ T3356] device_add+0x25b5/0x2df0 [ 89.289326][ T3356] usb_new_device+0x23e5/0x2fb0 [ 89.294155][ T3356] hub_event+0x581d/0x72f0 [ 89.298559][ T3356] process_one_work+0x1572/0x1ef0 [ 89.303559][ T3356] worker_thread+0x111b/0x2460 [ 89.308295][ T3356] kthread+0x4b5/0x4f0 [ 89.312354][ T3356] ret_from_fork+0x35/0x40 [ 89.316743][ T3356] [ 89.319048][ T3356] Uninit was created at: [ 89.323277][ T3356] kmsan_internal_poison_shadow+0x58/0xb0 [ 89.328969][ T3356] kmsan_slab_free+0x8d/0x100 [ 89.333632][ T3356] kfree+0x4c1/0x2db0 [ 89.337588][ T3356] si470x_usb_driver_probe+0xa6f/0x3200 [ 89.343106][ T3356] usb_probe_interface+0xd19/0x1310 [ 89.348277][ T3356] really_probe+0x1373/0x1dc0 [ 89.352930][ T3356] driver_probe_device+0x1ba/0x510 [ 89.358015][ T3356] __device_attach_driver+0x5b8/0x790 [ 89.363362][ T3356] bus_for_each_drv+0x28e/0x3b0 [ 89.368185][ T3356] __device_attach+0x489/0x750 [ 89.372940][ T3356] device_initial_probe+0x4a/0x60 [ 89.377949][ T3356] bus_probe_device+0x131/0x390 [ 89.382785][ T3356] device_add+0x25b5/0x2df0 [ 89.387262][ T3356] usb_set_configuration+0x309f/0x3710 [ 89.392689][ T3356] generic_probe+0xe7/0x280 [ 89.397163][ T3356] usb_probe_device+0x146/0x200 [ 89.401982][ T3356] really_probe+0x1373/0x1dc0 [ 89.406639][ T3356] driver_probe_device+0x1ba/0x510 [ 89.411722][ T3356] __device_attach_driver+0x5b8/0x790 [ 89.417064][ T3356] bus_for_each_drv+0x28e/0x3b0 [ 89.421899][ T3356] __device_attach+0x489/0x750 [ 89.426634][ T3356] device_initial_probe+0x4a/0x60 [ 89.431635][ T3356] bus_probe_device+0x131/0x390 [ 89.436466][ T3356] device_add+0x25b5/0x2df0 [ 89.440953][ T3356] usb_new_device+0x23e5/0x2fb0 [ 89.445774][ T3356] hub_event+0x581d/0x72f0 [ 89.450164][ T3356] process_one_work+0x1572/0x1ef0 [ 89.455173][ T3356] worker_thread+0x111b/0x2460 [ 89.459905][ T3356] kthread+0x4b5/0x4f0 [ 89.463948][ T3356] ret_from_fork+0x35/0x40 [ 89.468336][ T3356] ================================================================== [ 89.476366][ T3356] Disabling lock debugging due to kernel taint [ 89.482488][ T3356] Kernel panic - not syncing: panic_on_warn set ... [ 89.489051][ T3356] CPU: 0 PID: 3356 Comm: kworker/0:2 Tainted: G B 5.3.0-rc7+ #0 [ 89.497980][ T3356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.508036][ T3356] Workqueue: usb_hub_wq hub_event [ 89.513144][ T3356] Call Trace: [ 89.516500][ T3356] dump_stack+0x191/0x1f0 [ 89.520810][ T3356] panic+0x3c9/0xc1e [ 89.524700][ T3356] kmsan_report+0x2ca/0x2d0 [ 89.529182][ T3356] __msan_warning+0x75/0xe0 [ 89.533671][ T3356] usb_hcd_flush_endpoint+0x320/0x570 [ 89.539022][ T3356] ? usb_disable_device+0xf8d/0x1150 [ 89.544284][ T3356] usb_disable_device+0xfee/0x1150 [ 89.549382][ T3356] usb_disconnect+0x51e/0xd60 [ 89.554043][ T3356] hub_event+0x3fd0/0x72f0 [ 89.558455][ T3356] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 89.564422][ T3356] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 89.570388][ T3356] ? led_work+0x720/0x720 [ 89.574694][ T3356] ? led_work+0x720/0x720 [ 89.579008][ T3356] process_one_work+0x1572/0x1ef0 [ 89.584020][ T3356] worker_thread+0x189c/0x2460 [ 89.588772][ T3356] kthread+0x4b5/0x4f0 [ 89.592815][ T3356] ? process_one_work+0x1ef0/0x1ef0 [ 89.597995][ T3356] ? kthread_blkcg+0xf0/0xf0 [ 89.602562][ T3356] ret_from_fork+0x35/0x40 [ 89.608495][ T3356] Kernel Offset: disabled [ 89.612823][ T3356] Rebooting in 86400 seconds..