[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.959149][ T32] audit: type=1800 audit(1571234409.001:25): pid=11176 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.989581][ T32] audit: type=1800 audit(1571234409.031:26): pid=11176 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.009781][ T32] audit: type=1800 audit(1571234409.031:27): pid=11176 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 '10.128.0.200' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 89.372354][ T2900] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 89.612166][ T2900] usb 1-1: Using ep0 maxpacket: 8 [ 89.732289][ T2900] usb 1-1: config 0 has an invalid interface number: 210 but max is 0 [ 89.740520][ T2900] usb 1-1: config 0 has no interface number 0 [ 89.746772][ T2900] usb 1-1: config 0 interface 210 altsetting 0 endpoint 0x1 has an invalid bInterval 0, changing to 7 [ 89.757895][ T2900] usb 1-1: New USB device found, idVendor=0c72, idProduct=000c, bcdDevice=7c.aa [ 89.767022][ T2900] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 89.776235][ T2900] usb 1-1: config 0 descriptor?? [ 89.813161][ T2900] hub 1-1:0.210: ignoring external hub [ 89.823472][ T2900] ===================================================== [ 89.830482][ T2900] BUG: KMSAN: kernel-usb-infoleak in kmsan_handle_urb+0x28/0x40 [ 89.838129][ T2900] CPU: 0 PID: 2900 Comm: kworker/0:2 Not tainted 5.4.0-rc3+ #0 [ 89.845679][ T2900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.855759][ T2900] Workqueue: usb_hub_wq hub_event [ 89.860796][ T2900] Call Trace: [ 89.864100][ T2900] dump_stack+0x191/0x1f0 [ 89.868450][ T2900] kmsan_report+0x14a/0x2f0 [ 89.872971][ T2900] kmsan_internal_check_memory+0x3bb/0x4e0 [ 89.878799][ T2900] ? usb_new_device+0x23e5/0x2fb0 [ 89.883837][ T2900] ? hub_event+0x581d/0x72f0 [ 89.888451][ T2900] ? process_one_work+0x1572/0x1ef0 [ 89.893682][ T2900] ? worker_thread+0x111b/0x2460 [ 89.898647][ T2900] kmsan_handle_urb+0x28/0x40 [ 89.903343][ T2900] usb_submit_urb+0x7ef/0x1f50 [ 89.908155][ T2900] ? kmsan_virt_addr_valid+0x10/0xc0 [ 89.913488][ T2900] usb_start_wait_urb+0x143/0x410 [ 89.918547][ T2900] usb_bulk_msg+0x811/0x920 [ 89.923090][ T2900] pcan_usb_wait_rsp+0x25c/0x6e0 [ 89.928077][ T2900] pcan_usb_init+0xcc/0x450 [ 89.932604][ T2900] ? pcan_usb_probe+0x1e0/0x1e0 [ 89.937485][ T2900] ? pcan_usb_probe+0x1e0/0x1e0 [ 89.942387][ T2900] peak_usb_probe+0x1416/0x1b20 [ 89.947302][ T2900] ? peak_usb_do_device_exit+0x240/0x240 [ 89.952956][ T2900] usb_probe_interface+0xd19/0x1310 [ 89.958184][ T2900] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 89.964091][ T2900] ? usb_register_driver+0x860/0x860 [ 89.969388][ T2900] really_probe+0xd91/0x1f90 [ 89.974011][ T2900] driver_probe_device+0x1ba/0x510 [ 89.979143][ T2900] __device_attach_driver+0x5b8/0x790 [ 89.984548][ T2900] bus_for_each_drv+0x28e/0x3b0 [ 89.989423][ T2900] ? deferred_probe_work_func+0x400/0x400 [ 89.995157][ T2900] __device_attach+0x489/0x750 [ 90.000042][ T2900] device_initial_probe+0x4a/0x60 [ 90.005113][ T2900] bus_probe_device+0x131/0x390 [ 90.010005][ T2900] device_add+0x25b5/0x2df0 [ 90.014546][ T2900] usb_set_configuration+0x309f/0x3710 [ 90.020065][ T2900] generic_probe+0xe7/0x280 [ 90.024594][ T2900] ? usb_choose_configuration+0xae0/0xae0 [ 90.030346][ T2900] usb_probe_device+0x146/0x200 [ 90.035211][ T2900] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 90.041141][ T2900] ? usb_register_device_driver+0x500/0x500 [ 90.047065][ T2900] really_probe+0xd91/0x1f90 [ 90.051683][ T2900] driver_probe_device+0x1ba/0x510 [ 90.056816][ T2900] __device_attach_driver+0x5b8/0x790 [ 90.062211][ T2900] bus_for_each_drv+0x28e/0x3b0 [ 90.067072][ T2900] ? deferred_probe_work_func+0x400/0x400 [ 90.072808][ T2900] __device_attach+0x489/0x750 [ 90.077601][ T2900] device_initial_probe+0x4a/0x60 [ 90.082636][ T2900] bus_probe_device+0x131/0x390 [ 90.087504][ T2900] device_add+0x25b5/0x2df0 [ 90.092049][ T2900] usb_new_device+0x23e5/0x2fb0 [ 90.096932][ T2900] hub_event+0x581d/0x72f0 [ 90.101447][ T2900] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 90.107351][ T2900] ? led_work+0x720/0x720 [ 90.111687][ T2900] ? led_work+0x720/0x720 [ 90.116028][ T2900] process_one_work+0x1572/0x1ef0 [ 90.121095][ T2900] worker_thread+0x111b/0x2460 [ 90.125908][ T2900] kthread+0x4b5/0x4f0 [ 90.130003][ T2900] ? process_one_work+0x1ef0/0x1ef0 [ 90.135223][ T2900] ? kthread_blkcg+0xf0/0xf0 [ 90.139924][ T2900] ret_from_fork+0x35/0x40 [ 90.144469][ T2900] [ 90.146797][ T2900] Uninit was created at: [ 90.151056][ T2900] kmsan_internal_poison_shadow+0x60/0x110 [ 90.156886][ T2900] kmsan_slab_alloc+0xaa/0x130 [ 90.162276][ T2900] kmem_cache_alloc_trace+0x8c5/0xd20 [ 90.167664][ T2900] peak_usb_probe+0x544/0x1b20 [ 90.172461][ T2900] usb_probe_interface+0xd19/0x1310 [ 90.177680][ T2900] really_probe+0xd91/0x1f90 [ 90.182348][ T2900] driver_probe_device+0x1ba/0x510 [ 90.187651][ T2900] __device_attach_driver+0x5b8/0x790 [ 90.193039][ T2900] bus_for_each_drv+0x28e/0x3b0 [ 90.197898][ T2900] __device_attach+0x489/0x750 [ 90.202643][ T2900] device_initial_probe+0x4a/0x60 [ 90.207644][ T2900] bus_probe_device+0x131/0x390 [ 90.212471][ T2900] device_add+0x25b5/0x2df0 [ 90.216963][ T2900] usb_set_configuration+0x309f/0x3710 [ 90.222397][ T2900] generic_probe+0xe7/0x280 [ 90.226910][ T2900] usb_probe_device+0x146/0x200 [ 90.231747][ T2900] really_probe+0xd91/0x1f90 [ 90.236313][ T2900] driver_probe_device+0x1ba/0x510 [ 90.241398][ T2900] __device_attach_driver+0x5b8/0x790 [ 90.246744][ T2900] bus_for_each_drv+0x28e/0x3b0 [ 90.251611][ T2900] __device_attach+0x489/0x750 [ 90.256350][ T2900] device_initial_probe+0x4a/0x60 [ 90.261357][ T2900] bus_probe_device+0x131/0x390 [ 90.266184][ T2900] device_add+0x25b5/0x2df0 [ 90.270665][ T2900] usb_new_device+0x23e5/0x2fb0 [ 90.275494][ T2900] hub_event+0x581d/0x72f0 [ 90.279896][ T2900] process_one_work+0x1572/0x1ef0 [ 90.284912][ T2900] worker_thread+0x111b/0x2460 [ 90.289652][ T2900] kthread+0x4b5/0x4f0 [ 90.293696][ T2900] ret_from_fork+0x35/0x40 [ 90.298083][ T2900] [ 90.300386][ T2900] Bytes 2-15 of 16 are uninitialized [ 90.305651][ T2900] Memory access of size 16 starts at ffff88810fa82fa0 [ 90.312382][ T2900] ===================================================== [ 90.319285][ T2900] Disabling lock debugging due to kernel taint [ 90.325412][ T2900] Kernel panic - not syncing: panic_on_warn set ... [ 90.331982][ T2900] CPU: 0 PID: 2900 Comm: kworker/0:2 Tainted: G B 5.4.0-rc3+ #0 [ 90.340885][ T2900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.350925][ T2900] Workqueue: usb_hub_wq hub_event [ 90.355934][ T2900] Call Trace: [ 90.359216][ T2900] dump_stack+0x191/0x1f0 [ 90.363541][ T2900] panic+0x3c9/0xc1e [ 90.367442][ T2900] kmsan_report+0x2e8/0x2f0 [ 90.371955][ T2900] kmsan_internal_check_memory+0x3bb/0x4e0 [ 90.377749][ T2900] ? usb_new_device+0x23e5/0x2fb0 [ 90.382749][ T2900] ? hub_event+0x581d/0x72f0 [ 90.387318][ T2900] ? process_one_work+0x1572/0x1ef0 [ 90.392494][ T2900] ? worker_thread+0x111b/0x2460 [ 90.397426][ T2900] kmsan_handle_urb+0x28/0x40 [ 90.402091][ T2900] usb_submit_urb+0x7ef/0x1f50 [ 90.406833][ T2900] ? kmsan_virt_addr_valid+0x10/0xc0 [ 90.412108][ T2900] usb_start_wait_urb+0x143/0x410 [ 90.417115][ T2900] usb_bulk_msg+0x811/0x920 [ 90.421606][ T2900] pcan_usb_wait_rsp+0x25c/0x6e0 [ 90.426531][ T2900] pcan_usb_init+0xcc/0x450 [ 90.431024][ T2900] ? pcan_usb_probe+0x1e0/0x1e0 [ 90.435854][ T2900] ? pcan_usb_probe+0x1e0/0x1e0 [ 90.440683][ T2900] peak_usb_probe+0x1416/0x1b20 [ 90.445541][ T2900] ? peak_usb_do_device_exit+0x240/0x240 [ 90.451187][ T2900] usb_probe_interface+0xd19/0x1310 [ 90.456379][ T2900] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 90.462254][ T2900] ? usb_register_driver+0x860/0x860 [ 90.467570][ T2900] really_probe+0xd91/0x1f90 [ 90.472148][ T2900] driver_probe_device+0x1ba/0x510 [ 90.477276][ T2900] __device_attach_driver+0x5b8/0x790 [ 90.482634][ T2900] bus_for_each_drv+0x28e/0x3b0 [ 90.487460][ T2900] ? deferred_probe_work_func+0x400/0x400 [ 90.493197][ T2900] __device_attach+0x489/0x750 [ 90.498018][ T2900] device_initial_probe+0x4a/0x60 [ 90.503024][ T2900] bus_probe_device+0x131/0x390 [ 90.507857][ T2900] device_add+0x25b5/0x2df0 [ 90.512351][ T2900] usb_set_configuration+0x309f/0x3710 [ 90.517809][ T2900] generic_probe+0xe7/0x280 [ 90.522337][ T2900] ? usb_choose_configuration+0xae0/0xae0 [ 90.528073][ T2900] usb_probe_device+0x146/0x200 [ 90.532914][ T2900] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 90.538787][ T2900] ? usb_register_device_driver+0x500/0x500 [ 90.544658][ T2900] really_probe+0xd91/0x1f90 [ 90.549232][ T2900] driver_probe_device+0x1ba/0x510 [ 90.554335][ T2900] __device_attach_driver+0x5b8/0x790 [ 90.559693][ T2900] bus_for_each_drv+0x28e/0x3b0 [ 90.564541][ T2900] ? deferred_probe_work_func+0x400/0x400 [ 90.570254][ T2900] __device_attach+0x489/0x750 [ 90.575003][ T2900] device_initial_probe+0x4a/0x60 [ 90.580005][ T2900] bus_probe_device+0x131/0x390 [ 90.584846][ T2900] device_add+0x25b5/0x2df0 [ 90.589341][ T2900] usb_new_device+0x23e5/0x2fb0 [ 90.594193][ T2900] hub_event+0x581d/0x72f0 [ 90.598615][ T2900] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 90.604485][ T2900] ? led_work+0x720/0x720 [ 90.608790][ T2900] ? led_work+0x720/0x720 [ 90.613098][ T2900] process_one_work+0x1572/0x1ef0 [ 90.618110][ T2900] worker_thread+0x111b/0x2460 [ 90.622874][ T2900] kthread+0x4b5/0x4f0 [ 90.626920][ T2900] ? process_one_work+0x1ef0/0x1ef0 [ 90.632100][ T2900] ? kthread_blkcg+0xf0/0xf0 [ 90.636670][ T2900] ret_from_fork+0x35/0x40 [ 90.642489][ T2900] Kernel Offset: disabled [ 90.646907][ T2900] Rebooting in 86400 seconds..