[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 106.888390][ T30] audit: type=1800 audit(1562711115.932:25): pid=12709 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 106.912368][ T30] audit: type=1800 audit(1562711115.952:26): pid=12709 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 106.952444][ T30] audit: type=1800 audit(1562711115.982:27): pid=12709 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 '10.128.10.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 117.382445][ T33] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 117.622413][ T33] usb 1-1: Using ep0 maxpacket: 16 [ 117.742536][ T33] usb 1-1: config 0 has an invalid interface number: 235 but max is 0 [ 117.750767][ T33] usb 1-1: config 0 has no interface number 0 [ 117.757085][ T33] usb 1-1: config 0 interface 235 altsetting 0 bulk endpoint 0x5 has invalid maxpacket 0 [ 117.767063][ T33] usb 1-1: New USB device found, idVendor=05da, idProduct=009a, bcdDevice=46.6b [ 117.776224][ T33] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 117.785638][ T33] usb 1-1: config 0 descriptor?? [ 117.824801][ T33] microtek usb (rev 0.4.3): can only deal with bulk endpoints; endpoint 15 is not bulk. [ 117.836351][ T33] microtek usb (rev 0.4.3): can only deal with bulk endpoints; endpoint 10 is not bulk. [ 117.846941][ T33] microtek usb (rev 0.4.3): will this work? Command EP is not usually 5 [ 117.855397][ T33] ================================================================== [ 117.863482][ T33] BUG: KMSAN: uninit-value in mts_usb_probe+0xd1d/0xfb0 [ 117.871430][ T33] CPU: 1 PID: 33 Comm: kworker/1:1 Not tainted 5.2.0-rc4+ #11 [ 117.878977][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.889030][ T33] Workqueue: usb_hub_wq hub_event [ 117.894043][ T33] Call Trace: [ 117.897332][ T33] dump_stack+0x191/0x1f0 [ 117.901659][ T33] kmsan_report+0x162/0x2d0 [ 117.906163][ T33] __msan_warning+0x75/0xe0 [ 117.910677][ T33] mts_usb_probe+0xd1d/0xfb0 [ 117.915289][ T33] ? mdc800_usb_waitForIRQ+0x790/0x790 [ 117.920744][ T33] ? mdc800_usb_waitForIRQ+0x790/0x790 [ 117.926228][ T33] usb_probe_interface+0xd19/0x1310 [ 117.931445][ T33] ? usb_register_driver+0x7d0/0x7d0 [ 117.936724][ T33] really_probe+0x1344/0x1d90 [ 117.941408][ T33] driver_probe_device+0x1ba/0x510 [ 117.946513][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 117.952521][ T33] __device_attach_driver+0x5b8/0x790 [ 117.957903][ T33] bus_for_each_drv+0x28e/0x3b0 [ 117.962744][ T33] ? deferred_probe_work_func+0x400/0x400 [ 117.968459][ T33] __device_attach+0x489/0x750 [ 117.973245][ T33] device_initial_probe+0x4a/0x60 [ 117.978268][ T33] bus_probe_device+0x131/0x390 [ 117.983126][ T33] device_add+0x25b5/0x2df0 [ 117.987666][ T33] usb_set_configuration+0x309f/0x3710 [ 117.993169][ T33] generic_probe+0xe7/0x280 [ 117.997665][ T33] ? usb_choose_configuration+0xae0/0xae0 [ 118.003403][ T33] usb_probe_device+0x146/0x200 [ 118.008248][ T33] ? usb_register_device_driver+0x470/0x470 [ 118.014132][ T33] really_probe+0x1344/0x1d90 [ 118.018814][ T33] driver_probe_device+0x1ba/0x510 [ 118.023941][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 118.030115][ T33] __device_attach_driver+0x5b8/0x790 [ 118.035495][ T33] bus_for_each_drv+0x28e/0x3b0 [ 118.040334][ T33] ? deferred_probe_work_func+0x400/0x400 [ 118.046188][ T33] __device_attach+0x489/0x750 [ 118.050953][ T33] device_initial_probe+0x4a/0x60 [ 118.055968][ T33] bus_probe_device+0x131/0x390 [ 118.060816][ T33] device_add+0x25b5/0x2df0 [ 118.065348][ T33] usb_new_device+0x23e5/0x2fb0 [ 118.070219][ T33] hub_event+0x5853/0x7320 [ 118.074685][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 118.080568][ T33] ? led_work+0x720/0x720 [ 118.084889][ T33] ? led_work+0x720/0x720 [ 118.089212][ T33] process_one_work+0x1572/0x1f00 [ 118.094254][ T33] worker_thread+0x111b/0x2460 [ 118.099036][ T33] kthread+0x4b5/0x4f0 [ 118.103191][ T33] ? process_one_work+0x1f00/0x1f00 [ 118.108401][ T33] ? kthread_blkcg+0xf0/0xf0 [ 118.112980][ T33] ret_from_fork+0x35/0x40 [ 118.117422][ T33] [ 118.119740][ T33] Uninit was stored to memory at: [ 118.124753][ T33] kmsan_internal_chain_origin+0xcc/0x150 [ 118.130460][ T33] __msan_chain_origin+0x6b/0xe0 [ 118.135396][ T33] mts_usb_probe+0xcf7/0xfb0 [ 118.139973][ T33] usb_probe_interface+0xd19/0x1310 [ 118.145153][ T33] really_probe+0x1344/0x1d90 [ 118.149812][ T33] driver_probe_device+0x1ba/0x510 [ 118.154921][ T33] __device_attach_driver+0x5b8/0x790 [ 118.160277][ T33] bus_for_each_drv+0x28e/0x3b0 [ 118.165122][ T33] __device_attach+0x489/0x750 [ 118.169869][ T33] device_initial_probe+0x4a/0x60 [ 118.174879][ T33] bus_probe_device+0x131/0x390 [ 118.179865][ T33] device_add+0x25b5/0x2df0 [ 118.184364][ T33] usb_set_configuration+0x309f/0x3710 [ 118.189807][ T33] generic_probe+0xe7/0x280 [ 118.194322][ T33] usb_probe_device+0x146/0x200 [ 118.199159][ T33] really_probe+0x1344/0x1d90 [ 118.203822][ T33] driver_probe_device+0x1ba/0x510 [ 118.208927][ T33] __device_attach_driver+0x5b8/0x790 [ 118.214307][ T33] bus_for_each_drv+0x28e/0x3b0 [ 118.219166][ T33] __device_attach+0x489/0x750 [ 118.223929][ T33] device_initial_probe+0x4a/0x60 [ 118.228946][ T33] bus_probe_device+0x131/0x390 [ 118.233780][ T33] device_add+0x25b5/0x2df0 [ 118.238267][ T33] usb_new_device+0x23e5/0x2fb0 [ 118.243098][ T33] hub_event+0x5853/0x7320 [ 118.247523][ T33] process_one_work+0x1572/0x1f00 [ 118.252632][ T33] worker_thread+0x111b/0x2460 [ 118.257410][ T33] kthread+0x4b5/0x4f0 [ 118.261610][ T33] ret_from_fork+0x35/0x40 [ 118.266007][ T33] [ 118.268325][ T33] Local variable description: ----ep_in_set@mts_usb_probe [ 118.275414][ T33] Variable was created at: [ 118.279818][ T33] mts_usb_probe+0x53/0xfb0 [ 118.284337][ T33] usb_probe_interface+0xd19/0x1310 [ 118.289633][ T33] ================================================================== [ 118.297695][ T33] Disabling lock debugging due to kernel taint [ 118.303830][ T33] Kernel panic - not syncing: panic_on_warn set ... [ 118.310414][ T33] CPU: 1 PID: 33 Comm: kworker/1:1 Tainted: G B 5.2.0-rc4+ #11 [ 118.319310][ T33] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 118.329360][ T33] Workqueue: usb_hub_wq hub_event [ 118.334404][ T33] Call Trace: [ 118.337702][ T33] dump_stack+0x191/0x1f0 [ 118.342054][ T33] panic+0x3c9/0xc1e [ 118.345975][ T33] kmsan_report+0x2ca/0x2d0 [ 118.350475][ T33] __msan_warning+0x75/0xe0 [ 118.354978][ T33] mts_usb_probe+0xd1d/0xfb0 [ 118.359574][ T33] ? mdc800_usb_waitForIRQ+0x790/0x790 [ 118.365034][ T33] ? mdc800_usb_waitForIRQ+0x790/0x790 [ 118.370489][ T33] usb_probe_interface+0xd19/0x1310 [ 118.375691][ T33] ? usb_register_driver+0x7d0/0x7d0 [ 118.380984][ T33] really_probe+0x1344/0x1d90 [ 118.385705][ T33] driver_probe_device+0x1ba/0x510 [ 118.391005][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 118.396903][ T33] __device_attach_driver+0x5b8/0x790 [ 118.402315][ T33] bus_for_each_drv+0x28e/0x3b0 [ 118.407164][ T33] ? deferred_probe_work_func+0x400/0x400 [ 118.412881][ T33] __device_attach+0x489/0x750 [ 118.417649][ T33] device_initial_probe+0x4a/0x60 [ 118.422728][ T33] bus_probe_device+0x131/0x390 [ 118.427630][ T33] device_add+0x25b5/0x2df0 [ 118.432163][ T33] usb_set_configuration+0x309f/0x3710 [ 118.437676][ T33] generic_probe+0xe7/0x280 [ 118.442171][ T33] ? usb_choose_configuration+0xae0/0xae0 [ 118.447896][ T33] usb_probe_device+0x146/0x200 [ 118.452883][ T33] ? usb_register_device_driver+0x470/0x470 [ 118.458778][ T33] really_probe+0x1344/0x1d90 [ 118.463465][ T33] driver_probe_device+0x1ba/0x510 [ 118.468596][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 118.474497][ T33] __device_attach_driver+0x5b8/0x790 [ 118.479874][ T33] bus_for_each_drv+0x28e/0x3b0 [ 118.484720][ T33] ? deferred_probe_work_func+0x400/0x400 [ 118.490485][ T33] __device_attach+0x489/0x750 [ 118.495271][ T33] device_initial_probe+0x4a/0x60 [ 118.500293][ T33] bus_probe_device+0x131/0x390 [ 118.505768][ T33] device_add+0x25b5/0x2df0 [ 118.510298][ T33] usb_new_device+0x23e5/0x2fb0 [ 118.515167][ T33] hub_event+0x5853/0x7320 [ 118.519659][ T33] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 118.525740][ T33] ? led_work+0x720/0x720 [ 118.530060][ T33] ? led_work+0x720/0x720 [ 118.534390][ T33] process_one_work+0x1572/0x1f00 [ 118.539456][ T33] worker_thread+0x111b/0x2460 [ 118.544241][ T33] kthread+0x4b5/0x4f0 [ 118.548297][ T33] ? process_one_work+0x1f00/0x1f00 [ 118.553581][ T33] ? kthread_blkcg+0xf0/0xf0 [ 118.558260][ T33] ret_from_fork+0x35/0x40 [ 118.563853][ T33] Kernel Offset: disabled [ 118.568817][ T33] Rebooting in 86400 seconds..