[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 80.129398][ T30] audit: type=1800 audit(1571937356.179:25): pid=11514 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 80.153419][ T30] audit: type=1800 audit(1571937356.199:26): pid=11514 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 80.187623][ T30] audit: type=1800 audit(1571937356.229:27): pid=11514 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 '10.128.0.18' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 386.262247][ T31] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 386.292513][T11682] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 386.301798][ T3710] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 386.310193][T11681] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 386.318197][T11684] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 386.326591][T11683] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 386.652675][ T31] usb 1-1: config 0 has an invalid interface number: 206 but max is 0 [ 386.661265][ T31] usb 1-1: config 0 has no interface number 0 [ 386.667719][ T31] usb 1-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 386.677011][ T31] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 386.686396][T11682] usb 2-1: config 0 has an invalid interface number: 206 but max is 0 [ 386.694973][T11682] usb 2-1: config 0 has no interface number 0 [ 386.701110][T11682] usb 2-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 386.710481][T11682] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 386.719482][ T3710] usb 4-1: config 0 has an invalid interface number: 206 but max is 0 [ 386.728030][ T3710] usb 4-1: config 0 has no interface number 0 [ 386.734931][ T3710] usb 4-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 386.744172][ T3710] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 386.753024][T11681] usb 3-1: config 0 has an invalid interface number: 206 but max is 0 [ 386.761283][T11681] usb 3-1: config 0 has no interface number 0 [ 386.767622][T11681] usb 3-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 386.776827][T11681] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 386.786016][T11684] usb 6-1: config 0 has an invalid interface number: 206 but max is 0 [ 386.794372][T11684] usb 6-1: config 0 has no interface number 0 [ 386.800575][T11684] usb 6-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 386.809801][T11684] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 386.818638][T11683] usb 5-1: config 0 has an invalid interface number: 206 but max is 0 [ 386.827092][T11683] usb 5-1: config 0 has no interface number 0 [ 386.833348][T11683] usb 5-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 386.842569][T11683] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 386.851966][ T31] usb 1-1: config 0 descriptor?? [ 386.858563][T11682] usb 2-1: config 0 descriptor?? [ 386.864938][T11684] usb 6-1: config 0 descriptor?? [ 386.873237][T11681] usb 3-1: config 0 descriptor?? [ 386.879047][T11683] usb 5-1: config 0 descriptor?? [ 386.886286][ T3710] usb 4-1: config 0 descriptor?? executing program executing program executing program executing program executing program executing program [ 387.548705][ T31] rtl8150 1-1:0.206: eth1: rtl8150 is detected [ 387.560462][ T31] usb 1-1: USB disconnect, device number 2 [ 387.602221][T11682] rtl8150 2-1:0.206: eth1: rtl8150 is detected [ 387.617615][T11684] rtl8150 6-1:0.206: eth2: rtl8150 is detected [ 387.631393][ T3710] rtl8150 4-1:0.206: eth3: rtl8150 is detected [ 387.645808][T11682] usb 2-1: USB disconnect, device number 2 [ 387.685611][T11681] rtl8150 3-1:0.206: eth4: rtl8150 is detected [ 387.699486][T11683] rtl8150 5-1:0.206: eth5: rtl8150 is detected [ 387.714161][T11684] usb 6-1: USB disconnect, device number 2 [ 387.743098][ T3710] usb 4-1: USB disconnect, device number 2 [ 387.753076][T11681] usb 3-1: USB disconnect, device number 2 [ 387.760241][T11683] usb 5-1: USB disconnect, device number 2 [ 387.786941][T11650] ===================================================== [ 387.794272][T11650] BUG: KMSAN: uninit-value in hex_string+0x7d8/0x8d0 [ 387.800976][T11650] CPU: 0 PID: 11650 Comm: udevd Not tainted 5.4.0-rc3+ #0 [ 387.808106][T11650] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 387.819216][T11650] Call Trace: [ 387.822527][T11650] dump_stack+0x191/0x1f0 [ 387.826883][T11650] kmsan_report+0x128/0x220 [ 387.831413][T11650] __msan_warning+0x73/0xe0 [ 387.835960][T11650] hex_string+0x7d8/0x8d0 [ 387.840336][T11650] pointer+0xbfe/0x1d10 [ 387.844503][T11650] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 387.850404][T11650] vsnprintf+0x1c0c/0x3210 [ 387.854847][T11650] scnprintf+0x235/0x300 [ 387.859129][T11650] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 387.865283][T11650] sysfs_format_mac+0xde/0x100 [ 387.870074][T11650] address_show+0x159/0x1d0 [ 387.874574][T11650] ? link_mode_show+0x1a0/0x1a0 [ 387.879421][T11650] dev_attr_show+0xd8/0x1e0 [ 387.883946][T11650] sysfs_kf_seq_show+0x434/0x7b0 [ 387.888899][T11650] ? sysfs_kf_write+0x2a0/0x2a0 [ 387.893761][T11650] kernfs_seq_show+0x164/0x1e0 [ 387.898523][T11650] ? kernfs_seq_next+0x3e0/0x3e0 [ 387.903453][T11650] seq_read+0xac6/0x1d90 [ 387.907727][T11650] kernfs_fop_read+0x2c3/0x9a0 [ 387.912497][T11650] ? kernfs_notify_workfn+0x960/0x960 [ 387.917866][T11650] __vfs_read+0x1a9/0xc90 [ 387.922196][T11650] ? rw_verify_area+0x3a5/0x5e0 [ 387.927044][T11650] vfs_read+0x359/0x6f0 [ 387.931207][T11650] ksys_read+0x265/0x430 [ 387.935451][T11650] __se_sys_read+0x92/0xb0 [ 387.939882][T11650] __x64_sys_read+0x4a/0x70 [ 387.944418][T11650] do_syscall_64+0xb6/0x160 [ 387.948990][T11650] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 387.954882][T11650] RIP: 0033:0x7f8f7a3d2310 [ 387.959312][T11650] Code: 73 01 c3 48 8b 0d 28 4b 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d e5 a2 2b 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e 8a 01 00 48 89 04 24 [ 387.979961][T11650] RSP: 002b:00007ffdb7380c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 387.988404][T11650] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8f7a3d2310 [ 387.997321][T11650] RDX: 0000000000001000 RSI: 00007ffdb73810e0 RDI: 0000000000000005 [ 388.005642][T11650] RBP: 00007ffdb7382210 R08: 00007ffdb7382210 R09: 00007f8f7a4287d0 [ 388.013602][T11650] R10: 322f326273752f31 R11: 0000000000000246 R12: 0000000000c43150 [ 388.021560][T11650] R13: 0000000000c43240 R14: 0000000000000001 R15: 0000000000c510e9 [ 388.029530][T11650] [ 388.031858][T11650] Uninit was stored to memory at: [ 388.036923][T11650] kmsan_internal_chain_origin+0xbd/0x180 [ 388.042648][T11650] kmsan_memcpy_memmove_metadata+0x25c/0x2e0 [ 388.048618][T11650] kmsan_memcpy_metadata+0xb/0x10 [ 388.053650][T11650] __msan_memcpy+0x56/0x70 [ 388.058056][T11650] rtl8150_probe+0x1143/0x14a0 [ 388.062810][T11650] usb_probe_interface+0xd19/0x1310 [ 388.067999][T11650] really_probe+0xd91/0x1f90 [ 388.072600][T11650] driver_probe_device+0x1ba/0x510 [ 388.077697][T11650] __device_attach_driver+0x5b8/0x790 [ 388.083054][T11650] bus_for_each_drv+0x28e/0x3b0 [ 388.087891][T11650] __device_attach+0x489/0x750 [ 388.092658][T11650] device_initial_probe+0x4a/0x60 [ 388.097670][T11650] bus_probe_device+0x131/0x390 [ 388.102675][T11650] device_add+0x25b5/0x2df0 [ 388.107181][T11650] usb_set_configuration+0x309f/0x3710 [ 388.112722][T11650] generic_probe+0xe7/0x280 [ 388.117220][T11650] usb_probe_device+0x146/0x200 [ 388.122070][T11650] really_probe+0xd91/0x1f90 [ 388.126645][T11650] driver_probe_device+0x1ba/0x510 [ 388.131740][T11650] __device_attach_driver+0x5b8/0x790 [ 388.137096][T11650] bus_for_each_drv+0x28e/0x3b0 [ 388.142021][T11650] __device_attach+0x489/0x750 [ 388.146769][T11650] device_initial_probe+0x4a/0x60 [ 388.151872][T11650] bus_probe_device+0x131/0x390 [ 388.156711][T11650] device_add+0x25b5/0x2df0 [ 388.161215][T11650] usb_new_device+0x23e5/0x2fb0 [ 388.166079][T11650] hub_event+0x581d/0x72f0 [ 388.170494][T11650] process_one_work+0x1572/0x1ef0 [ 388.175506][T11650] worker_thread+0x111b/0x2460 [ 388.180257][T11650] kthread+0x4b5/0x4f0 [ 388.184320][T11650] ret_from_fork+0x35/0x40 [ 388.188714][T11650] [ 388.191029][T11650] Local variable description: ----node_id.i@rtl8150_probe [ 388.198159][T11650] Variable was created at: [ 388.202570][T11650] rtl8150_probe+0xdc8/0x14a0 [ 388.207231][T11650] rtl8150_probe+0xdc8/0x14a0 [ 388.211891][T11650] ===================================================== [ 388.218805][T11650] Disabling lock debugging due to kernel taint [ 388.224960][T11650] Kernel panic - not syncing: panic_on_warn set ... [ 388.224964][T11689] ===================================================== [ 388.224986][T11689] BUG: KMSAN: uninit-value in hex_string+0x7d8/0x8d0 [ 388.231546][T11650] CPU: 0 PID: 11650 Comm: udevd Tainted: G B 5.4.0-rc3+ #0 [ 388.253608][T11650] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 388.263662][T11650] Call Trace: [ 388.266958][T11650] dump_stack+0x191/0x1f0 [ 388.271289][T11650] panic+0x3c9/0xc1e [ 388.276155][T11650] kmsan_report+0x215/0x220 [ 388.280670][T11650] __msan_warning+0x73/0xe0 [ 388.285181][T11650] hex_string+0x7d8/0x8d0 [ 388.289526][T11650] pointer+0xbfe/0x1d10 [ 388.293823][T11650] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 388.299733][T11650] vsnprintf+0x1c0c/0x3210 [ 388.304348][T11650] scnprintf+0x235/0x300 [ 388.308610][T11650] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 388.314673][T11650] sysfs_format_mac+0xde/0x100 [ 388.319440][T11650] address_show+0x159/0x1d0 [ 388.323938][T11650] ? link_mode_show+0x1a0/0x1a0 [ 388.328783][T11650] dev_attr_show+0xd8/0x1e0 [ 388.333310][T11650] sysfs_kf_seq_show+0x434/0x7b0 [ 388.338252][T11650] ? sysfs_kf_write+0x2a0/0x2a0 [ 388.343095][T11650] kernfs_seq_show+0x164/0x1e0 [ 388.347856][T11650] ? kernfs_seq_next+0x3e0/0x3e0 [ 388.352798][T11650] seq_read+0xac6/0x1d90 [ 388.357064][T11650] kernfs_fop_read+0x2c3/0x9a0 [ 388.361838][T11650] ? kernfs_notify_workfn+0x960/0x960 [ 388.367462][T11650] __vfs_read+0x1a9/0xc90 [ 388.371813][T11650] ? rw_verify_area+0x3a5/0x5e0 [ 388.376685][T11650] vfs_read+0x359/0x6f0 [ 388.380868][T11650] ksys_read+0x265/0x430 [ 388.385758][T11650] __se_sys_read+0x92/0xb0 [ 388.390171][T11650] __x64_sys_read+0x4a/0x70 [ 388.394683][T11650] do_syscall_64+0xb6/0x160 [ 388.399182][T11650] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 388.405076][T11650] RIP: 0033:0x7f8f7a3d2310 [ 388.409485][T11650] Code: 73 01 c3 48 8b 0d 28 4b 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d e5 a2 2b 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e 8a 01 00 48 89 04 24 [ 388.429096][T11650] RSP: 002b:00007ffdb7380c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 388.437690][T11650] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8f7a3d2310 [ 388.445655][T11650] RDX: 0000000000001000 RSI: 00007ffdb73810e0 RDI: 0000000000000005 [ 388.453634][T11650] RBP: 00007ffdb7382210 R08: 00007ffdb7382210 R09: 00007f8f7a4287d0 [ 388.461597][T11650] R10: 322f326273752f31 R11: 0000000000000246 R12: 0000000000c43150 [ 388.469562][T11650] R13: 0000000000c43240 R14: 0000000000000001 R15: 0000000000c510e9 [ 388.477553][T11689] CPU: 1 PID: 11689 Comm: udevd Tainted: G B 5.4.0-rc3+ #0 [ 388.486058][T11689] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 388.496653][T11689] Call Trace: [ 388.499965][T11689] dump_stack+0x191/0x1f0 [ 388.504325][T11689] kmsan_report+0x128/0x220 [ 388.508832][T11689] __msan_warning+0x73/0xe0 [ 388.513360][T11689] hex_string+0x7d8/0x8d0 [ 388.517702][T11689] pointer+0xbfe/0x1d10 [ 388.521866][T11689] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 388.527759][T11689] vsnprintf+0x1c0c/0x3210 [ 388.532185][T11689] scnprintf+0x235/0x300 [ 388.536456][T11689] ? kmsan_internal_unpoison_shadow+0x42/0x80 [ 388.542516][T11689] sysfs_format_mac+0xde/0x100 [ 388.547274][T11689] address_show+0x159/0x1d0 [ 388.551771][T11689] ? link_mode_show+0x1a0/0x1a0 [ 388.556614][T11689] dev_attr_show+0xd8/0x1e0 [ 388.561118][T11689] sysfs_kf_seq_show+0x434/0x7b0 [ 388.566077][T11689] ? sysfs_kf_write+0x2a0/0x2a0 [ 388.570935][T11689] kernfs_seq_show+0x164/0x1e0 [ 388.575698][T11689] ? kernfs_seq_next+0x3e0/0x3e0 [ 388.580646][T11689] seq_read+0xac6/0x1d90 [ 388.584918][T11689] kernfs_fop_read+0x2c3/0x9a0 [ 388.589686][T11689] ? kernfs_notify_workfn+0x960/0x960 [ 388.595049][T11689] __vfs_read+0x1a9/0xc90 [ 388.599406][T11689] ? rw_verify_area+0x3a5/0x5e0 [ 388.604264][T11689] vfs_read+0x359/0x6f0 [ 388.608431][T11689] ksys_read+0x265/0x430 [ 388.612673][T11689] __se_sys_read+0x92/0xb0 [ 388.617103][T11689] __x64_sys_read+0x4a/0x70 [ 388.621596][T11689] do_syscall_64+0xb6/0x160 [ 388.626107][T11689] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 388.631988][T11689] RIP: 0033:0x7f8f7a3d2310 [ 388.636428][T11689] Code: 73 01 c3 48 8b 0d 28 4b 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d e5 a2 2b 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e 8a 01 00 48 89 04 24 [ 388.656026][T11689] RSP: 002b:00007ffdb7380c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 388.664446][T11689] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8f7a3d2310 [ 388.672425][T11689] RDX: 0000000000001000 RSI: 00007ffdb73810e0 RDI: 0000000000000005 [ 388.680389][T11689] RBP: 00007ffdb7382210 R08: 00007ffdb7382210 R09: 00007f8f7a4287d0 [ 388.688379][T11689] R10: 342f346273752f33 R11: 0000000000000246 R12: 0000000000c47090 [ 388.696341][T11689] R13: 0000000000c47180 R14: 0000000000000001 R15: 0000000000c510e9 [ 388.704331][T11689] [ 388.706645][T11689] Uninit was stored to memory at: [ 388.711665][T11689] kmsan_internal_chain_origin+0xbd/0x180 [ 388.717375][T11689] kmsan_memcpy_memmove_metadata+0x25c/0x2e0 [ 388.723362][T11689] kmsan_memcpy_metadata+0xb/0x10 [ 388.728373][T11689] __msan_memcpy+0x56/0x70 [ 388.732776][T11689] rtl8150_probe+0x1143/0x14a0 [ 388.737529][T11689] usb_probe_interface+0xd19/0x1310 [ 388.742716][T11689] really_probe+0xd91/0x1f90 [ 388.747299][T11689] driver_probe_device+0x1ba/0x510 [ 388.752397][T11689] __device_attach_driver+0x5b8/0x790 [ 388.757789][T11689] bus_for_each_drv+0x28e/0x3b0 [ 388.762629][T11689] __device_attach+0x489/0x750 [ 388.767390][T11689] device_initial_probe+0x4a/0x60 [ 388.772400][T11689] bus_probe_device+0x131/0x390 [ 388.778376][T11689] device_add+0x25b5/0x2df0 [ 388.782887][T11689] usb_set_configuration+0x309f/0x3710 [ 388.788333][T11689] generic_probe+0xe7/0x280 [ 388.792827][T11689] usb_probe_device+0x146/0x200 [ 388.797675][T11689] really_probe+0xd91/0x1f90 [ 388.802256][T11689] driver_probe_device+0x1ba/0x510 [ 388.807352][T11689] __device_attach_driver+0x5b8/0x790 [ 388.812721][T11689] bus_for_each_drv+0x28e/0x3b0 [ 388.817570][T11689] __device_attach+0x489/0x750 [ 388.822326][T11689] device_initial_probe+0x4a/0x60 [ 388.827350][T11689] bus_probe_device+0x131/0x390 [ 388.832190][T11689] device_add+0x25b5/0x2df0 [ 388.836680][T11689] usb_new_device+0x23e5/0x2fb0 [ 388.841518][T11689] hub_event+0x581d/0x72f0 [ 388.845926][T11689] process_one_work+0x1572/0x1ef0 [ 388.850940][T11689] worker_thread+0x111b/0x2460 [ 388.855695][T11689] kthread+0x4b5/0x4f0 [ 388.859751][T11689] ret_from_fork+0x35/0x40 [ 388.864165][T11689] [ 388.866478][T11689] Local variable description: ----node_id.i@rtl8150_probe [ 388.873578][T11689] Variable was created at: [ 388.877985][T11689] rtl8150_probe+0xdc8/0x14a0 [ 388.882645][T11689] rtl8150_probe+0xdc8/0x14a0 [ 388.887314][T11689] ===================================================== [ 389.694987][T11650] Shutting down cpus with NMI [ 389.713467][T11650] Kernel Offset: disabled [ 389.717809][T11650] Rebooting in 86400 seconds..