[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.028216][ T31] audit: type=1800 audit(1571192590.083:25): pid=11388 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.051189][ T31] audit: type=1800 audit(1571192590.113:26): pid=11388 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 78.086856][ T31] audit: type=1800 audit(1571192590.133:27): pid=11388 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 '10.128.0.134' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.295396][T11539] IPVS: ftp: loaded support on port[0] = 21 [ 91.601998][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 91.962119][ T12] usb 1-1: config 0 has an invalid interface number: 157 but max is 0 [ 91.970337][ T12] usb 1-1: config 0 has no interface number 0 [ 91.976589][ T12] usb 1-1: New USB device found, idVendor=04f1, idProduct=1001, bcdDevice=c3.b5 [ 91.985744][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 91.995135][ T12] usb 1-1: config 0 descriptor?? [ 92.036397][ T12] gspca_main: sunplus-2.14.0 probing 04f1:1001 [ 92.242284][ T12] gspca_sunplus: reg_w_riv err -71 [ 92.247506][ T12] ===================================================== [ 92.254464][ T12] BUG: KMSAN: uninit-value in sd_init+0x5cef/0x6060 [ 92.261048][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc3+ #0 [ 92.268388][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.278435][ T12] Workqueue: usb_hub_wq hub_event [ 92.283432][ T12] Call Trace: [ 92.286702][ T12] dump_stack+0x191/0x1f0 [ 92.291011][ T12] kmsan_report+0x14a/0x2f0 [ 92.295492][ T12] __msan_warning+0x73/0xf0 [ 92.299976][ T12] sd_init+0x5cef/0x6060 [ 92.304206][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.310075][ T12] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 92.316201][ T12] ? sd_config+0x38a/0x760 [ 92.320609][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.326479][ T12] ? sd_config+0x760/0x760 [ 92.330884][ T12] gspca_dev_probe2+0xe93/0x2230 [ 92.335807][ T12] gspca_dev_probe+0x346/0x3b0 [ 92.340555][ T12] sd_probe+0x8d/0xa0 [ 92.344511][ T12] ? i2c_write+0xe40/0xe40 [ 92.348911][ T12] usb_probe_interface+0xd19/0x1310 [ 92.354156][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.360038][ T12] ? usb_register_driver+0x860/0x860 [ 92.365355][ T12] really_probe+0xd91/0x1f90 [ 92.369938][ T12] driver_probe_device+0x1ba/0x510 [ 92.375033][ T12] __device_attach_driver+0x5b8/0x790 [ 92.380387][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.385214][ T12] ? deferred_probe_work_func+0x400/0x400 [ 92.390914][ T12] __device_attach+0x489/0x750 [ 92.395704][ T12] device_initial_probe+0x4a/0x60 [ 92.400705][ T12] bus_probe_device+0x131/0x390 [ 92.405539][ T12] device_add+0x25b5/0x2df0 [ 92.410037][ T12] usb_set_configuration+0x309f/0x3710 [ 92.415488][ T12] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 92.421541][ T12] generic_probe+0xe7/0x280 [ 92.426067][ T12] ? usb_choose_configuration+0xae0/0xae0 [ 92.431772][ T12] usb_probe_device+0x146/0x200 [ 92.436599][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.442509][ T12] ? usb_register_device_driver+0x500/0x500 [ 92.448381][ T12] really_probe+0xd91/0x1f90 [ 92.452954][ T12] driver_probe_device+0x1ba/0x510 [ 92.458049][ T12] __device_attach_driver+0x5b8/0x790 [ 92.463408][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.468235][ T12] ? deferred_probe_work_func+0x400/0x400 [ 92.473936][ T12] __device_attach+0x489/0x750 [ 92.478683][ T12] device_initial_probe+0x4a/0x60 [ 92.483692][ T12] bus_probe_device+0x131/0x390 [ 92.488543][ T12] device_add+0x25b5/0x2df0 [ 92.493049][ T12] usb_new_device+0x23e5/0x2fb0 [ 92.497889][ T12] hub_event+0x581d/0x72f0 [ 92.502321][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.508191][ T12] ? led_work+0x720/0x720 [ 92.512507][ T12] ? led_work+0x720/0x720 [ 92.516821][ T12] process_one_work+0x1572/0x1ef0 [ 92.521842][ T12] worker_thread+0x111b/0x2460 [ 92.526649][ T12] kthread+0x4b5/0x4f0 [ 92.530699][ T12] ? process_one_work+0x1ef0/0x1ef0 [ 92.535880][ T12] ? kthread_blkcg+0xf0/0xf0 [ 92.540450][ T12] ret_from_fork+0x35/0x40 [ 92.544852][ T12] [ 92.547152][ T12] Uninit was created at: [ 92.551375][ T12] kmsan_internal_poison_shadow+0x60/0x110 [ 92.557159][ T12] kmsan_slab_alloc+0xaa/0x130 [ 92.561900][ T12] kmem_cache_alloc_trace+0x8c5/0xd20 [ 92.567248][ T12] gspca_dev_probe2+0x30d/0x2230 [ 92.572159][ T12] gspca_dev_probe+0x346/0x3b0 [ 92.576898][ T12] sd_probe+0x8d/0xa0 [ 92.580867][ T12] usb_probe_interface+0xd19/0x1310 [ 92.586048][ T12] really_probe+0xd91/0x1f90 [ 92.590612][ T12] driver_probe_device+0x1ba/0x510 [ 92.595697][ T12] __device_attach_driver+0x5b8/0x790 [ 92.601052][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.605878][ T12] __device_attach+0x489/0x750 [ 92.610614][ T12] device_initial_probe+0x4a/0x60 [ 92.615612][ T12] bus_probe_device+0x131/0x390 [ 92.620445][ T12] device_add+0x25b5/0x2df0 [ 92.624926][ T12] usb_set_configuration+0x309f/0x3710 [ 92.630370][ T12] generic_probe+0xe7/0x280 [ 92.634848][ T12] usb_probe_device+0x146/0x200 [ 92.639673][ T12] really_probe+0xd91/0x1f90 [ 92.644239][ T12] driver_probe_device+0x1ba/0x510 [ 92.649323][ T12] __device_attach_driver+0x5b8/0x790 [ 92.654668][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.659490][ T12] __device_attach+0x489/0x750 [ 92.664242][ T12] device_initial_probe+0x4a/0x60 [ 92.669238][ T12] bus_probe_device+0x131/0x390 [ 92.674062][ T12] device_add+0x25b5/0x2df0 [ 92.678539][ T12] usb_new_device+0x23e5/0x2fb0 [ 92.683369][ T12] hub_event+0x581d/0x72f0 [ 92.687760][ T12] process_one_work+0x1572/0x1ef0 [ 92.692760][ T12] worker_thread+0x111b/0x2460 [ 92.697499][ T12] kthread+0x4b5/0x4f0 [ 92.701541][ T12] ret_from_fork+0x35/0x40 [ 92.705928][ T12] ===================================================== [ 92.712834][ T12] Disabling lock debugging due to kernel taint [ 92.718959][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 92.725531][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G B 5.4.0-rc3+ #0 [ 92.734270][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.744307][ T12] Workqueue: usb_hub_wq hub_event [ 92.749310][ T12] Call Trace: [ 92.752586][ T12] dump_stack+0x191/0x1f0 [ 92.756907][ T12] panic+0x3c9/0xc1e [ 92.760805][ T12] kmsan_report+0x2e8/0x2f0 [ 92.765298][ T12] __msan_warning+0x73/0xf0 [ 92.769788][ T12] sd_init+0x5cef/0x6060 [ 92.774016][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.779891][ T12] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 92.786021][ T12] ? sd_config+0x38a/0x760 [ 92.790416][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.796289][ T12] ? sd_config+0x760/0x760 [ 92.800685][ T12] gspca_dev_probe2+0xe93/0x2230 [ 92.805620][ T12] gspca_dev_probe+0x346/0x3b0 [ 92.810367][ T12] sd_probe+0x8d/0xa0 [ 92.814432][ T12] ? i2c_write+0xe40/0xe40 [ 92.818827][ T12] usb_probe_interface+0xd19/0x1310 [ 92.824008][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.829879][ T12] ? usb_register_driver+0x860/0x860 [ 92.835142][ T12] really_probe+0xd91/0x1f90 [ 92.839723][ T12] driver_probe_device+0x1ba/0x510 [ 92.844824][ T12] __device_attach_driver+0x5b8/0x790 [ 92.850179][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.855005][ T12] ? deferred_probe_work_func+0x400/0x400 [ 92.860703][ T12] __device_attach+0x489/0x750 [ 92.865449][ T12] device_initial_probe+0x4a/0x60 [ 92.870462][ T12] bus_probe_device+0x131/0x390 [ 92.875291][ T12] device_add+0x25b5/0x2df0 [ 92.879797][ T12] usb_set_configuration+0x309f/0x3710 [ 92.885260][ T12] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 92.891323][ T12] generic_probe+0xe7/0x280 [ 92.895803][ T12] ? usb_choose_configuration+0xae0/0xae0 [ 92.901500][ T12] usb_probe_device+0x146/0x200 [ 92.906328][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.912197][ T12] ? usb_register_device_driver+0x500/0x500 [ 92.918067][ T12] really_probe+0xd91/0x1f90 [ 92.922648][ T12] driver_probe_device+0x1ba/0x510 [ 92.927750][ T12] __device_attach_driver+0x5b8/0x790 [ 92.933113][ T12] bus_for_each_drv+0x28e/0x3b0 [ 92.937940][ T12] ? deferred_probe_work_func+0x400/0x400 [ 92.943642][ T12] __device_attach+0x489/0x750 [ 92.948399][ T12] device_initial_probe+0x4a/0x60 [ 92.953404][ T12] bus_probe_device+0x131/0x390 [ 92.958242][ T12] device_add+0x25b5/0x2df0 [ 92.962742][ T12] usb_new_device+0x23e5/0x2fb0 [ 92.967583][ T12] hub_event+0x581d/0x72f0 [ 92.972006][ T12] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.977873][ T12] ? led_work+0x720/0x720 [ 92.982179][ T12] ? led_work+0x720/0x720 [ 92.986490][ T12] process_one_work+0x1572/0x1ef0 [ 92.991512][ T12] worker_thread+0x111b/0x2460 [ 92.996264][ T12] kthread+0x4b5/0x4f0 [ 93.000311][ T12] ? process_one_work+0x1ef0/0x1ef0 [ 93.005499][ T12] ? kthread_blkcg+0xf0/0xf0 [ 93.010069][ T12] ret_from_fork+0x35/0x40 [ 93.015675][ T12] Kernel Offset: disabled [ 93.020035][ T12] Rebooting in 86400 seconds..