[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.728255][ T31] audit: type=1800 audit(1571170524.772:25): pid=11594 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.751557][ T31] audit: type=1800 audit(1571170524.792:26): pid=11594 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.782219][ T31] audit: type=1800 audit(1571170524.822:27): pid=11594 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 '10.128.0.155' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 90.068493][T11745] IPVS: ftp: loaded support on port[0] = 21 [ 90.381908][ T17] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 90.621933][ T17] usb 1-1: Using ep0 maxpacket: 8 [ 90.742173][ T17] usb 1-1: config 0 has an invalid interface number: 145 but max is 0 [ 90.750486][ T17] usb 1-1: config 0 has no interface number 0 [ 90.756730][ T17] usb 1-1: New USB device found, idVendor=1631, idProduct=6200, bcdDevice=39.50 [ 90.765869][ T17] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 90.775317][ T17] usb 1-1: config 0 descriptor?? [ 91.872043][ T17] asix 1-1:0.145 (unnamed net_device) (uninitialized): invalid hw address, using random [ 92.082314][ T17] asix 1-1:0.145 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 [ 92.092581][ T17] asix 1-1:0.145 (unnamed net_device) (uninitialized): Error reading PHYID register: ffffffb9 [ 92.122090][ T17] asix 1-1:0.145 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71 [ 92.132511][ T17] asix 1-1:0.145 (unnamed net_device) (uninitialized): Failed to enable software MII access [ 92.162134][ T17] asix 1-1:0.145 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 [ 92.172934][ T17] ===================================================== [ 92.179893][ T17] BUG: KMSAN: uninit-value in asix_mdio_write+0x3fa/0x8d0 [ 92.186988][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.4.0-rc3+ #0 [ 92.194331][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.204377][ T17] Workqueue: usb_hub_wq hub_event [ 92.209380][ T17] Call Trace: [ 92.212658][ T17] dump_stack+0x191/0x1f0 [ 92.216972][ T17] kmsan_report+0x14a/0x2f0 [ 92.221457][ T17] __msan_warning+0x73/0xf0 [ 92.225941][ T17] asix_mdio_write+0x3fa/0x8d0 [ 92.230691][ T17] asix_phy_reset+0xd8/0x2d0 [ 92.235264][ T17] ax88172_bind+0x780/0xbd0 [ 92.239784][ T17] ? asix_resume+0x160/0x160 [ 92.244351][ T17] usbnet_probe+0x10d3/0x39d0 [ 92.249008][ T17] ? kmsan_get_metadata+0x39/0x350 [ 92.254101][ T17] ? kmsan_internal_set_origin+0x6a/0xb0 [ 92.259729][ T17] ? usbnet_disconnect+0x660/0x660 [ 92.264836][ T17] usb_probe_interface+0xd19/0x1310 [ 92.270038][ T17] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.275920][ T17] ? usb_register_driver+0x860/0x860 [ 92.281223][ T17] really_probe+0xd91/0x1f90 [ 92.285803][ T17] driver_probe_device+0x1ba/0x510 [ 92.290900][ T17] __device_attach_driver+0x5b8/0x790 [ 92.296289][ T17] bus_for_each_drv+0x28e/0x3b0 [ 92.301117][ T17] ? deferred_probe_work_func+0x400/0x400 [ 92.306821][ T17] __device_attach+0x489/0x750 [ 92.311683][ T17] device_initial_probe+0x4a/0x60 [ 92.316701][ T17] bus_probe_device+0x131/0x390 [ 92.321556][ T17] device_add+0x25b5/0x2df0 [ 92.326065][ T17] usb_set_configuration+0x309f/0x3710 [ 92.331520][ T17] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 92.337573][ T17] generic_probe+0xe7/0x280 [ 92.342057][ T17] ? usb_choose_configuration+0xae0/0xae0 [ 92.347764][ T17] usb_probe_device+0x146/0x200 [ 92.352601][ T17] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.358472][ T17] ? usb_register_device_driver+0x500/0x500 [ 92.364343][ T17] really_probe+0xd91/0x1f90 [ 92.368916][ T17] driver_probe_device+0x1ba/0x510 [ 92.374356][ T17] __device_attach_driver+0x5b8/0x790 [ 92.379711][ T17] bus_for_each_drv+0x28e/0x3b0 [ 92.384540][ T17] ? deferred_probe_work_func+0x400/0x400 [ 92.390249][ T17] __device_attach+0x489/0x750 [ 92.395007][ T17] device_initial_probe+0x4a/0x60 [ 92.400008][ T17] bus_probe_device+0x131/0x390 [ 92.404845][ T17] device_add+0x25b5/0x2df0 [ 92.409337][ T17] usb_new_device+0x23e5/0x2fb0 [ 92.414175][ T17] hub_event+0x581d/0x72f0 [ 92.418596][ T17] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.424478][ T17] ? led_work+0x720/0x720 [ 92.428793][ T17] ? led_work+0x720/0x720 [ 92.433099][ T17] process_one_work+0x1572/0x1ef0 [ 92.438113][ T17] worker_thread+0x111b/0x2460 [ 92.442867][ T17] kthread+0x4b5/0x4f0 [ 92.446915][ T17] ? process_one_work+0x1ef0/0x1ef0 [ 92.452095][ T17] ? kthread_blkcg+0xf0/0xf0 [ 92.456660][ T17] ret_from_fork+0x35/0x40 [ 92.461061][ T17] [ 92.463363][ T17] Local variable description: ----smsr@asix_mdio_write [ 92.470188][ T17] Variable was created at: [ 92.474588][ T17] asix_mdio_write+0xc7/0x8d0 [ 92.479239][ T17] asix_mdio_write+0xc7/0x8d0 [ 92.483892][ T17] ===================================================== [ 92.490805][ T17] Disabling lock debugging due to kernel taint [ 92.496944][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 92.503535][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Tainted: G B 5.4.0-rc3+ #0 [ 92.512272][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.522333][ T17] Workqueue: usb_hub_wq hub_event [ 92.527337][ T17] Call Trace: [ 92.530612][ T17] dump_stack+0x191/0x1f0 [ 92.534923][ T17] panic+0x3c9/0xc1e [ 92.538814][ T17] kmsan_report+0x2e8/0x2f0 [ 92.543345][ T17] __msan_warning+0x73/0xf0 [ 92.547833][ T17] asix_mdio_write+0x3fa/0x8d0 [ 92.552581][ T17] asix_phy_reset+0xd8/0x2d0 [ 92.557148][ T17] ax88172_bind+0x780/0xbd0 [ 92.561633][ T17] ? asix_resume+0x160/0x160 [ 92.566198][ T17] usbnet_probe+0x10d3/0x39d0 [ 92.570855][ T17] ? kmsan_get_metadata+0x39/0x350 [ 92.575956][ T17] ? kmsan_internal_set_origin+0x6a/0xb0 [ 92.581577][ T17] ? usbnet_disconnect+0x660/0x660 [ 92.586688][ T17] usb_probe_interface+0xd19/0x1310 [ 92.591895][ T17] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.597767][ T17] ? usb_register_driver+0x860/0x860 [ 92.603030][ T17] really_probe+0xd91/0x1f90 [ 92.607689][ T17] driver_probe_device+0x1ba/0x510 [ 92.612806][ T17] __device_attach_driver+0x5b8/0x790 [ 92.618172][ T17] bus_for_each_drv+0x28e/0x3b0 [ 92.623001][ T17] ? deferred_probe_work_func+0x400/0x400 [ 92.628703][ T17] __device_attach+0x489/0x750 [ 92.633454][ T17] device_initial_probe+0x4a/0x60 [ 92.638458][ T17] bus_probe_device+0x131/0x390 [ 92.643299][ T17] device_add+0x25b5/0x2df0 [ 92.647792][ T17] usb_set_configuration+0x309f/0x3710 [ 92.653240][ T17] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 92.659292][ T17] generic_probe+0xe7/0x280 [ 92.663772][ T17] ? usb_choose_configuration+0xae0/0xae0 [ 92.669470][ T17] usb_probe_device+0x146/0x200 [ 92.674320][ T17] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.680200][ T17] ? usb_register_device_driver+0x500/0x500 [ 92.686072][ T17] really_probe+0xd91/0x1f90 [ 92.690645][ T17] driver_probe_device+0x1ba/0x510 [ 92.695740][ T17] __device_attach_driver+0x5b8/0x790 [ 92.701096][ T17] bus_for_each_drv+0x28e/0x3b0 [ 92.705925][ T17] ? deferred_probe_work_func+0x400/0x400 [ 92.711635][ T17] __device_attach+0x489/0x750 [ 92.716384][ T17] device_initial_probe+0x4a/0x60 [ 92.721388][ T17] bus_probe_device+0x131/0x390 [ 92.726239][ T17] device_add+0x25b5/0x2df0 [ 92.730829][ T17] usb_new_device+0x23e5/0x2fb0 [ 92.735678][ T17] hub_event+0x581d/0x72f0 [ 92.740101][ T17] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 92.745970][ T17] ? led_work+0x720/0x720 [ 92.750275][ T17] ? led_work+0x720/0x720 [ 92.754585][ T17] process_one_work+0x1572/0x1ef0 [ 92.759609][ T17] worker_thread+0x111b/0x2460 [ 92.764370][ T17] kthread+0x4b5/0x4f0 [ 92.768418][ T17] ? process_one_work+0x1ef0/0x1ef0 [ 92.773603][ T17] ? kthread_blkcg+0xf0/0xf0 [ 92.778170][ T17] ret_from_fork+0x35/0x40 [ 92.783883][ T17] Kernel Offset: disabled [ 92.788205][ T17] Rebooting in 86400 seconds..