[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 80.518188][ T32] audit: type=1800 audit(1569077574.563:25): pid=11978 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 80.541223][ T32] audit: type=1800 audit(1569077574.593:26): pid=11978 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 80.575954][ T32] audit: type=1800 audit(1569077574.613:27): pid=11978 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 '10.128.0.50' (ECDSA) to the list of known hosts. syzkaller login: [ 89.602920][T12131] IPVS: ftp: loaded support on port[0] = 21 [ 89.607618][T12137] IPVS: ftp: loaded support on port[0] = 21 [ 89.625990][T12134] IPVS: ftp: loaded support on port[0] = 21 [ 89.628855][T12138] IPVS: ftp: loaded support on port[0] = 21 [ 89.648294][T12139] IPVS: ftp: loaded support on port[0] = 21 [ 89.654179][T12140] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 90.042027][ T3372] usb 3-1: new low-speed USB device number 2 using dummy_hcd [ 90.081954][ T17] usb 6-1: new low-speed USB device number 2 using dummy_hcd [ 90.131882][ T12] usb 1-1: new low-speed USB device number 2 using dummy_hcd [ 90.152002][ T5] usb 5-1: new low-speed USB device number 2 using dummy_hcd [ 90.161975][T12146] usb 4-1: new low-speed USB device number 2 using dummy_hcd [ 90.181963][T12144] usb 2-1: new low-speed USB device number 2 using dummy_hcd [ 90.402175][ T3372] usb 3-1: config 0 has an invalid interface number: 236 but max is 2 [ 90.410577][ T3372] usb 3-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 90.421195][ T3372] usb 3-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 90.430178][ T3372] usb 3-1: config 0 has no interface number 0 [ 90.436436][ T3372] usb 3-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 90.446639][ T3372] usb 3-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 90.455943][ T3372] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.465819][ T3372] usb 3-1: config 0 descriptor?? [ 90.508740][ T3372] iowarrior 3-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior0 [ 90.522838][ T17] usb 6-1: config 0 has an invalid interface number: 236 but max is 2 [ 90.531153][ T17] usb 6-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 90.541501][ T17] usb 6-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 90.542212][ T12] usb 1-1: config 0 has an invalid interface number: 236 but max is 2 [ 90.550482][ T17] usb 6-1: config 0 has no interface number 0 [ 90.550575][ T17] usb 6-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 90.558901][ T12] usb 1-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 90.564936][ T17] usb 6-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 90.575088][ T12] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 90.585252][ T17] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.594319][ T12] usb 1-1: config 0 has no interface number 0 [ 90.606485][ T17] usb 6-1: config 0 descriptor?? [ 90.611199][ T12] usb 1-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 90.632744][ T12] usb 1-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 90.641929][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.651111][ T5] usb 5-1: config 0 has an invalid interface number: 236 but max is 2 [ 90.659583][ T5] usb 5-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 90.670054][ T5] usb 5-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 90.677675][ T17] iowarrior 6-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior1 [ 90.679164][ T5] usb 5-1: config 0 has no interface number 0 [ 90.691885][T12144] usb 2-1: config 0 has an invalid interface number: 236 but max is 2 [ 90.696174][ T5] usb 5-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 90.704348][T12144] usb 2-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 90.704414][T12144] usb 2-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 90.704472][T12144] usb 2-1: config 0 has no interface number 0 [ 90.704579][T12144] usb 2-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 90.714735][ T5] usb 5-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 90.724921][T12144] usb 2-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 90.733828][ T5] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.739896][T12144] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.751366][T12146] usb 4-1: config 0 has an invalid interface number: 236 but max is 2 [ 90.762436][T12144] usb 2-1: config 0 descriptor?? [ 90.768255][T12146] usb 4-1: config 0 has an invalid descriptor of length 99, skipping remainder of the config [ 90.784352][T12146] usb 4-1: config 0 has 1 interface, different from the descriptor's value: 3 [ 90.797532][T12146] usb 4-1: config 0 has no interface number 0 [ 90.816708][T12146] usb 4-1: config 0 interface 236 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 90.832911][T12146] usb 4-1: New USB device found, idVendor=07c0, idProduct=1501, bcdDevice=74.a0 [ 90.842100][T12146] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.857018][ T5] usb 5-1: config 0 descriptor?? [ 90.863044][ T12] usb 1-1: config 0 descriptor?? [ 90.870853][ T17] usb 3-1: USB disconnect, device number 2 [ 90.875511][T12146] usb 4-1: config 0 descriptor?? [ 90.881724][ C1] iowarrior 3-1:0.236: iowarrior_callback - usb_submit_urb failed with result -19 [ 90.900571][T12150] usb 6-1: USB disconnect, device number 2 executing program executing program [ 90.929960][ T5] iowarrior 5-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior2 [ 90.944989][ T12] iowarrior 1-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior3 [ 90.945139][T12150] iowarrior 6-1:0.236: I/O-Warror #1 now disconnected [ 90.967931][T12144] iowarrior 2-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior1 [ 90.980901][ T17] ================================================================== [ 90.989006][ T17] BUG: KMSAN: uninit-value in iowarrior_disconnect+0x27a/0x3e0 [ 90.992484][T12146] iowarrior 4-1:0.236: IOWarrior product=0x1501, serial= interface=236 now attached to iowarrior0 [ 90.996579][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.0-rc7+ #0 [ 91.014510][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.024589][ T17] Workqueue: usb_hub_wq hub_event [ 91.029621][ T17] Call Trace: [ 91.032933][ T17] dump_stack+0x191/0x1f0 [ 91.037286][ T17] kmsan_report+0x162/0x2d0 [ 91.041808][ T17] __msan_warning+0x75/0xe0 [ 91.046328][ T17] iowarrior_disconnect+0x27a/0x3e0 [ 91.051543][ T17] ? iowarrior_probe+0x1a50/0x1a50 [ 91.056666][ T17] usb_unbind_interface+0x3a2/0xdd0 [ 91.061886][ T17] ? usb_driver_release_interface+0x2a0/0x2a0 [ 91.067973][ T17] ? usb_driver_release_interface+0x2a0/0x2a0 [ 91.074059][ T17] device_release_driver_internal+0x911/0xd20 [ 91.080154][ T17] device_release_driver+0x4b/0x60 [ 91.085282][ T17] bus_remove_device+0x4bf/0x670 [ 91.090243][ T17] device_del+0xcd5/0x1d10 [ 91.094695][ T17] usb_disable_device+0x567/0x1150 [ 91.099848][ T17] usb_disconnect+0x51e/0xd60 [ 91.104561][ T17] hub_event+0x3fd0/0x72f0 [ 91.109043][ T17] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 91.114948][ T17] ? led_work+0x720/0x720 [ 91.119288][ T17] ? led_work+0x720/0x720 [ 91.123632][ T17] process_one_work+0x1572/0x1ef0 [ 91.128700][ T17] worker_thread+0x111b/0x2460 [ 91.133509][ T17] kthread+0x4b5/0x4f0 [ 91.137607][ T17] ? process_one_work+0x1ef0/0x1ef0 [ 91.142839][ T17] ? kthread_blkcg+0xf0/0xf0 [ 91.147632][ T17] ret_from_fork+0x35/0x40 [ 91.152064][ T17] [ 91.154392][ T17] Uninit was created at: [ 91.158648][ T17] kmsan_internal_poison_shadow+0x58/0xb0 [ 91.164386][ T17] kmsan_slab_free+0x8d/0x100 [ 91.169081][ T17] kfree+0x4c1/0x2db0 [ 91.173076][ T17] iowarrior_release+0x334/0x3a0 [ 91.178032][ T17] __fput+0x4c9/0xba0 [ 91.182027][ T17] ____fput+0x37/0x40 [ 91.186026][ T17] task_work_run+0x22e/0x2a0 [ 91.190625][ T17] prepare_exit_to_usermode+0x39d/0x4d0 [ 91.196183][ T17] syscall_return_slowpath+0x90/0x610 [ 91.201561][ T17] do_syscall_64+0xe2/0xf0 [ 91.205991][ T17] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 91.212294][ T17] ================================================================== [ 91.220336][ T17] Disabling lock debugging due to kernel taint [ 91.226492][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 91.233087][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Tainted: G B 5.3.0-rc7+ #0 [ 91.241831][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.251927][ T17] Workqueue: usb_hub_wq hub_event [ 91.256948][ T17] Call Trace: [ 91.260276][ T17] dump_stack+0x191/0x1f0 [ 91.264598][ T17] panic+0x3c9/0xc1e [ 91.268494][ T17] kmsan_report+0x2ca/0x2d0 [ 91.272981][ T17] __msan_warning+0x75/0xe0 [ 91.277478][ T17] iowarrior_disconnect+0x27a/0x3e0 [ 91.282671][ T17] ? iowarrior_probe+0x1a50/0x1a50 [ 91.287785][ T17] usb_unbind_interface+0x3a2/0xdd0 [ 91.292988][ T17] ? usb_driver_release_interface+0x2a0/0x2a0 [ 91.299057][ T17] ? usb_driver_release_interface+0x2a0/0x2a0 [ 91.305232][ T17] device_release_driver_internal+0x911/0xd20 [ 91.311330][ T17] device_release_driver+0x4b/0x60 [ 91.316511][ T17] bus_remove_device+0x4bf/0x670 [ 91.321436][ T17] device_del+0xcd5/0x1d10 [ 91.325848][ T17] usb_disable_device+0x567/0x1150 [ 91.330967][ T17] usb_disconnect+0x51e/0xd60 [ 91.335675][ T17] hub_event+0x3fd0/0x72f0 [ 91.340153][ T17] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 91.346067][ T17] ? led_work+0x720/0x720 [ 91.350397][ T17] ? led_work+0x720/0x720 [ 91.354729][ T17] process_one_work+0x1572/0x1ef0 [ 91.359755][ T17] worker_thread+0x111b/0x2460 [ 91.364519][ T17] kthread+0x4b5/0x4f0 [ 91.368582][ T17] ? process_one_work+0x1ef0/0x1ef0 [ 91.373779][ T17] ? kthread_blkcg+0xf0/0xf0 [ 91.378382][ T17] ret_from_fork+0x35/0x40 [ 91.384446][ T17] Kernel Offset: disabled [ 91.388785][ T17] Rebooting in 86400 seconds..