[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 84.431467][ T32] audit: type=1800 audit(1571564075.470:25): pid=11941 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 84.454778][ T32] audit: type=1800 audit(1571564075.500:26): pid=11941 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 84.502776][ T32] audit: type=1800 audit(1571564075.530:27): pid=11941 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 '10.128.15.207' (ECDSA) to the list of known hosts. syzkaller login: [ 153.944577][T12094] IPVS: ftp: loaded support on port[0] = 21 [ 154.023676][T12094] chnl_net:caif_netlink_parms(): no params data found [ 154.056275][T12094] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.063474][T12094] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.071502][T12094] device bridge_slave_0 entered promiscuous mode [ 154.079984][T12094] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.087233][T12094] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.095487][T12094] device bridge_slave_1 entered promiscuous mode [ 154.116246][T12094] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 154.127430][T12094] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 154.149992][T12094] team0: Port device team_slave_0 added [ 154.157889][T12094] team0: Port device team_slave_1 added [ 154.215110][T12094] device hsr_slave_0 entered promiscuous mode [ 154.252773][T12094] device hsr_slave_1 entered promiscuous mode [ 154.323974][T12094] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.331350][T12094] bridge0: port 2(bridge_slave_1) entered forwarding state [ 154.339130][T12094] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.346315][T12094] bridge0: port 1(bridge_slave_0) entered forwarding state [ 154.394600][T12094] 8021q: adding VLAN 0 to HW filter on device bond0 [ 154.408714][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 154.418929][ T31] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.427546][ T31] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.437432][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 154.451779][T12094] 8021q: adding VLAN 0 to HW filter on device team0 [ 154.464599][ T965] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 154.473292][ T965] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.480389][ T965] bridge0: port 1(bridge_slave_0) entered forwarding state [ 154.505314][ T965] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 154.514803][ T965] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.522756][ T965] bridge0: port 2(bridge_slave_1) entered forwarding state [ 154.531814][ T965] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 154.543432][ T965] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 154.558024][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 154.576618][T12094] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 154.588639][T12094] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network executing program [ 154.603812][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 154.613415][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 154.623890][ T3691] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 154.647287][T12094] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 154.942414][ T3691] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 155.302587][ T3691] usb 1-1: config 0 has an invalid interface number: 206 but max is 0 [ 155.311000][ T3691] usb 1-1: config 0 has no interface number 0 [ 155.317317][ T3691] usb 1-1: New USB device found, idVendor=0411, idProduct=0012, bcdDevice=56.5f [ 155.326654][ T3691] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 155.336063][ T3691] usb 1-1: config 0 descriptor?? [ 156.037758][ T3691] rtl8150 1-1:0.206: eth1: rtl8150 is detected [ 156.046762][ T3691] usb 1-1: USB disconnect, device number 2 [ 156.130789][T12077] ===================================================== [ 156.137785][T12077] BUG: KMSAN: uninit-value in hex_string+0x7d8/0x8d0 [ 156.144465][T12077] CPU: 0 PID: 12077 Comm: udevd Not tainted 5.4.0-rc3+ #0 [ 156.151557][T12077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 156.161592][T12077] Call Trace: [ 156.164892][T12077] dump_stack+0x191/0x1f0 [ 156.169231][T12077] kmsan_report+0x14a/0x2f0 [ 156.173806][T12077] __msan_warning+0x73/0xf0 [ 156.178313][T12077] hex_string+0x7d8/0x8d0 [ 156.182645][T12077] pointer+0xbfe/0x1d10 [ 156.186793][T12077] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 156.192678][T12077] vsnprintf+0x1c0c/0x3210 [ 156.197085][T12077] scnprintf+0x235/0x300 [ 156.201331][T12077] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 156.207378][T12077] sysfs_format_mac+0xde/0x100 [ 156.212138][T12077] address_show+0x159/0x1d0 [ 156.216638][T12077] ? link_mode_show+0x1a0/0x1a0 [ 156.221480][T12077] dev_attr_show+0xd8/0x1e0 [ 156.225967][T12077] sysfs_kf_seq_show+0x434/0x7b0 [ 156.230890][T12077] ? sysfs_kf_write+0x2a0/0x2a0 [ 156.235720][T12077] kernfs_seq_show+0x164/0x1e0 [ 156.240480][T12077] ? kernfs_seq_next+0x3e0/0x3e0 [ 156.245411][T12077] seq_read+0xac6/0x1d90 [ 156.249645][T12077] kernfs_fop_read+0x2c3/0x9a0 [ 156.254482][T12077] ? kernfs_notify_workfn+0x960/0x960 [ 156.259828][T12077] __vfs_read+0x1a9/0xc90 [ 156.264143][T12077] ? rw_verify_area+0x3a5/0x5e0 [ 156.268977][T12077] vfs_read+0x359/0x6f0 [ 156.273115][T12077] ksys_read+0x265/0x430 [ 156.277344][T12077] __se_sys_read+0x92/0xb0 [ 156.281742][T12077] __x64_sys_read+0x4a/0x70 [ 156.288751][T12077] do_syscall_64+0xb6/0x160 [ 156.293240][T12077] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 156.299135][T12077] RIP: 0033:0x7f8c51c1a310 [ 156.303575][T12077] 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 [ 156.323158][T12077] RSP: 002b:00007ffecb188cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 156.332241][T12077] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8c51c1a310 [ 156.340190][T12077] RDX: 0000000000001000 RSI: 00007ffecb189180 RDI: 0000000000000005 [ 156.348142][T12077] RBP: 00007ffecb18a2b0 R08: 00007ffecb18a2b0 R09: 00007f8c51c707d0 [ 156.356093][T12077] R10: 312f316273752f30 R11: 0000000000000246 R12: 000000000199b120 [ 156.364143][T12077] R13: 000000000199b210 R14: 0000000000000001 R15: 00000000019b4159 [ 156.372107][T12077] [ 156.374469][T12077] Uninit was stored to memory at: [ 156.379474][T12077] kmsan_internal_chain_origin+0xbd/0x170 [ 156.385173][T12077] kmsan_memcpy_memmove_metadata+0x25c/0x2e0 [ 156.391129][T12077] kmsan_memcpy_metadata+0xb/0x10 [ 156.396134][T12077] __msan_memcpy+0x56/0x70 [ 156.400530][T12077] rtl8150_probe+0x1143/0x14a0 [ 156.405288][T12077] usb_probe_interface+0xd19/0x1310 [ 156.410463][T12077] really_probe+0xd91/0x1f90 [ 156.415030][T12077] driver_probe_device+0x1ba/0x510 [ 156.420121][T12077] __device_attach_driver+0x5b8/0x790 [ 156.425469][T12077] bus_for_each_drv+0x28e/0x3b0 [ 156.430305][T12077] __device_attach+0x489/0x750 [ 156.435047][T12077] device_initial_probe+0x4a/0x60 [ 156.440095][T12077] bus_probe_device+0x131/0x390 [ 156.444932][T12077] device_add+0x25b5/0x2df0 [ 156.449429][T12077] usb_set_configuration+0x309f/0x3710 [ 156.454983][T12077] generic_probe+0xe7/0x280 [ 156.459467][T12077] usb_probe_device+0x146/0x200 [ 156.464299][T12077] really_probe+0xd91/0x1f90 [ 156.468935][T12077] driver_probe_device+0x1ba/0x510 [ 156.474050][T12077] __device_attach_driver+0x5b8/0x790 [ 156.479410][T12077] bus_for_each_drv+0x28e/0x3b0 [ 156.484247][T12077] __device_attach+0x489/0x750 [ 156.489175][T12077] device_initial_probe+0x4a/0x60 [ 156.494615][T12077] bus_probe_device+0x131/0x390 [ 156.499541][T12077] device_add+0x25b5/0x2df0 [ 156.504023][T12077] usb_new_device+0x23e5/0x2fb0 [ 156.509372][T12077] hub_event+0x581d/0x72f0 [ 156.513768][T12077] process_one_work+0x1572/0x1ef0 [ 156.518773][T12077] worker_thread+0x111b/0x2460 [ 156.523610][T12077] kthread+0x4b5/0x4f0 [ 156.527661][T12077] ret_from_fork+0x35/0x40 [ 156.532063][T12077] [ 156.534372][T12077] Local variable description: ----node_id.i@rtl8150_probe [ 156.541449][T12077] Variable was created at: [ 156.545856][T12077] rtl8150_probe+0xdc8/0x14a0 [ 156.550508][T12077] rtl8150_probe+0xdc8/0x14a0 [ 156.555165][T12077] ===================================================== [ 156.562121][T12077] Disabling lock debugging due to kernel taint [ 156.568276][T12077] Kernel panic - not syncing: panic_on_warn set ... [ 156.574855][T12077] CPU: 0 PID: 12077 Comm: udevd Tainted: G B 5.4.0-rc3+ #0 [ 156.583329][T12077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 156.593473][T12077] Call Trace: [ 156.597109][T12077] dump_stack+0x191/0x1f0 [ 156.601433][T12077] panic+0x3c9/0xc1e [ 156.605324][T12077] kmsan_report+0x2e8/0x2f0 [ 156.609823][T12077] __msan_warning+0x73/0xf0 [ 156.614307][T12077] hex_string+0x7d8/0x8d0 [ 156.618626][T12077] pointer+0xbfe/0x1d10 [ 156.622768][T12077] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 156.628641][T12077] vsnprintf+0x1c0c/0x3210 [ 156.633050][T12077] scnprintf+0x235/0x300 [ 156.637299][T12077] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 156.643349][T12077] sysfs_format_mac+0xde/0x100 [ 156.648107][T12077] address_show+0x159/0x1d0 [ 156.653133][T12077] ? link_mode_show+0x1a0/0x1a0 [ 156.657970][T12077] dev_attr_show+0xd8/0x1e0 [ 156.662467][T12077] sysfs_kf_seq_show+0x434/0x7b0 [ 156.667424][T12077] ? sysfs_kf_write+0x2a0/0x2a0 [ 156.672277][T12077] kernfs_seq_show+0x164/0x1e0 [ 156.677045][T12077] ? kernfs_seq_next+0x3e0/0x3e0 [ 156.681977][T12077] seq_read+0xac6/0x1d90 [ 156.686233][T12077] kernfs_fop_read+0x2c3/0x9a0 [ 156.690988][T12077] ? kernfs_notify_workfn+0x960/0x960 [ 156.696352][T12077] __vfs_read+0x1a9/0xc90 [ 156.700682][T12077] ? rw_verify_area+0x3a5/0x5e0 [ 156.705516][T12077] vfs_read+0x359/0x6f0 [ 156.709791][T12077] ksys_read+0x265/0x430 [ 156.714031][T12077] __se_sys_read+0x92/0xb0 [ 156.718440][T12077] __x64_sys_read+0x4a/0x70 [ 156.722987][T12077] do_syscall_64+0xb6/0x160 [ 156.727835][T12077] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 156.733722][T12077] RIP: 0033:0x7f8c51c1a310 [ 156.738138][T12077] 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 [ 156.757986][T12077] RSP: 002b:00007ffecb188cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 156.766380][T12077] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8c51c1a310 [ 156.774977][T12077] RDX: 0000000000001000 RSI: 00007ffecb189180 RDI: 0000000000000005 [ 156.782949][T12077] RBP: 00007ffecb18a2b0 R08: 00007ffecb18a2b0 R09: 00007f8c51c707d0 [ 156.790920][T12077] R10: 312f316273752f30 R11: 0000000000000246 R12: 000000000199b120 [ 156.798883][T12077] R13: 000000000199b210 R14: 0000000000000001 R15: 00000000019b4159 [ 156.808218][T12077] Kernel Offset: disabled [ 156.814369][T12077] Rebooting in 86400 seconds..