[info] Using makefile-style concurrent boot in runlevel 2. [ 25.852544] audit: type=1800 audit(1541454602.780:21): pid=5532 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.10.31' (ECDSA) to the list of known hosts. 2018/11/05 21:50:14 parsed 1 programs 2018/11/05 21:50:16 executed programs: 0 syzkaller login: [ 39.576845] IPVS: ftp: loaded support on port[0] = 21 [ 39.576852] IPVS: ftp: loaded support on port[0] = 21 [ 39.595723] IPVS: ftp: loaded support on port[0] = 21 [ 39.616012] IPVS: ftp: loaded support on port[0] = 21 [ 39.635479] IPVS: ftp: loaded support on port[0] = 21 [ 39.685801] IPVS: ftp: loaded support on port[0] = 21 [ 40.723937] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.743811] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.759154] device bridge_slave_0 entered promiscuous mode [ 40.805354] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.817163] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.830383] device bridge_slave_0 entered promiscuous mode [ 40.842652] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.854549] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.862842] device bridge_slave_1 entered promiscuous mode [ 40.890268] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.896632] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.917694] device bridge_slave_0 entered promiscuous mode [ 40.925717] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.934339] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.941795] device bridge_slave_1 entered promiscuous mode [ 40.949731] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.956100] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.971180] device bridge_slave_0 entered promiscuous mode [ 40.982004] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.988860] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.996446] device bridge_slave_0 entered promiscuous mode [ 41.005254] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.015793] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.023252] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.031951] device bridge_slave_0 entered promiscuous mode [ 41.041651] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.048018] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.066271] device bridge_slave_1 entered promiscuous mode [ 41.074453] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.086603] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.099538] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.106876] device bridge_slave_1 entered promiscuous mode [ 41.119127] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.125526] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.134959] device bridge_slave_1 entered promiscuous mode [ 41.143579] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.154140] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.164308] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.172851] device bridge_slave_1 entered promiscuous mode [ 41.181044] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.188375] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.203979] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.224843] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.241035] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.288562] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.296054] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.335582] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.347075] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.387502] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.430800] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.502616] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.523187] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.549831] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 41.566901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 41.582141] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.600930] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.610983] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 41.621435] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.636424] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.655821] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 41.667003] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 41.684856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 41.709681] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.722517] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.751782] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.795072] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.942153] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.952898] team0: Port device team_slave_0 added [ 41.974702] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.982979] team0: Port device team_slave_0 added [ 42.010067] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.017500] team0: Port device team_slave_1 added [ 42.079284] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.114557] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.122364] team0: Port device team_slave_1 added [ 42.130698] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.138123] team0: Port device team_slave_0 added [ 42.159838] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.167279] team0: Port device team_slave_0 added [ 42.179769] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.193282] team0: Port device team_slave_0 added [ 42.206776] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.221342] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.231486] team0: Port device team_slave_0 added [ 42.244034] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.255751] team0: Port device team_slave_1 added [ 42.265220] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.280037] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.291689] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.300434] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.308808] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.316257] team0: Port device team_slave_1 added [ 42.324876] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.332364] team0: Port device team_slave_1 added [ 42.340687] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.348101] team0: Port device team_slave_1 added [ 42.363040] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.379491] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 42.388318] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.401102] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.419291] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.433410] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.444649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 42.454348] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 42.464326] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 42.473805] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 42.486646] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.499148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 42.514254] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.534719] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.543031] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.550747] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 42.558370] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.565935] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.573840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.581977] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 42.592523] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.607962] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 42.625390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 42.637958] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.647203] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.656205] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.664616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.672599] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.680804] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 42.690332] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 42.699687] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.714353] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.733327] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.744749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.757899] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.772330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.780711] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.788248] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.796164] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 42.803925] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.811907] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 42.819741] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.827486] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.838192] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.848813] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.858310] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.872094] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.883720] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.905849] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.922304] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.930407] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.938129] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 42.960573] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.979980] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.988652] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.996627] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.025110] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.039952] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.544358] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.550904] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.557933] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.564366] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.574980] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.655442] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.661887] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.668637] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.675015] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.690459] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.697569] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.704007] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.710702] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.717075] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.725946] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.741651] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.748017] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.754715] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.761121] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.772468] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.842189] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.848622] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.855289] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.861708] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.881079] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.973662] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.980135] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.986819] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.993254] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.012090] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.413783] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.430469] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.447468] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.461957] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.469489] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.476487] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 46.561905] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.622997] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.639982] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.672865] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.708190] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.848854] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 46.882366] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 46.904660] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 46.923336] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 46.963042] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.995164] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.119836] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.126039] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.135788] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.187660] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.196068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.204068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.215884] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.232213] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.243233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.253132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.269237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.278203] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.298979] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.310486] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.316845] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.339181] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.486331] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.500425] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.546815] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.564792] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.580608] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.592091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.605310] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.624768] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.924773] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.175814] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. 2018/11/05 21:50:26 executed programs: 6 2018/11/05 21:50:31 executed programs: 122 [ 55.711038] BUG: spinlock cpu recursion on CPU#0, syz-executor0/8023 [ 55.717602] lock: 0xffffc900045ea000, .magic: dead4ead, .owner: /-1, .owner_cpu: 0 [ 55.725991] CPU: 0 PID: 8023 Comm: syz-executor0 Not tainted 4.20.0-rc1+ #99 [ 55.733138] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.733184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.747870] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.748748] Call Trace: [ 55.748769] dump_stack+0x244/0x39d [ 55.748788] ? dump_stack_print_info.cold.1+0x20/0x20 [ 55.748808] spin_dump.cold.3+0x81/0xe7 [ 55.748829] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.755868] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.757624] do_raw_spin_lock+0x26a/0x350 [ 55.757639] ? zap_class+0x640/0x640 [ 55.757652] ? rwlock_bug.part.2+0x90/0x90 [ 55.757671] ? rcu_unexpedite_gp+0x20/0x20 [ 55.766240] kobject: 'loop2' (000000000bdb293a): kobject_uevent_env [ 55.766470] _raw_spin_lock+0x35/0x40 [ 55.766489] ? kvm_mmu_change_mmu_pages+0xf3/0x450 [ 55.777220] kobject: 'loop2' (000000000bdb293a): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 55.784972] kvm_mmu_change_mmu_pages+0xf3/0x450 [ 55.784989] ? kvm_test_age_hva+0x30/0x30 [ 55.785004] ? kvm_mmu_module_init+0x200/0x200 [ 55.785024] ? kmem_cache_alloc_node_trace+0x34b/0x740 [ 55.798941] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.801311] ? kasan_unpoison_shadow+0x35/0x50 [ 55.801330] ? __lock_is_held+0xb5/0x140 [ 55.801349] kvm_arch_commit_memory_region+0x289/0x2d0 [ 55.807806] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.811535] __kvm_set_memory_region+0x1c99/0x2d50 [ 55.811559] ? kvm_read_guest_cached+0x5b0/0x5b0 [ 55.811575] ? find_held_lock+0x36/0x1c0 [ 55.811594] ? kvm_set_memory_region+0x39/0x50 [ 55.821195] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.825949] ? zap_class+0x640/0x640 [ 55.825973] ? __lock_acquire+0x62f/0x4c20 [ 55.831336] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.834854] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 55.834878] ? find_held_lock+0x36/0x1c0 [ 55.839876] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.844723] ? __might_fault+0x12b/0x1e0 [ 55.844739] ? lock_downgrade+0x900/0x900 [ 55.844759] ? __lock_acquire+0x62f/0x4c20 [ 55.844785] kvm_set_memory_region+0x2e/0x50 [ 55.851316] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.855578] kvm_vm_ioctl+0x652/0x1d60 [ 55.855591] ? zap_class+0x640/0x640 [ 55.855612] ? lru_cache_add+0xa50/0xa50 [ 55.860306] kobject: 'loop3' (0000000005b5310e): kobject_uevent_env [ 55.864940] ? kvm_set_memory_region+0x50/0x50 [ 55.864961] ? find_held_lock+0x36/0x1c0 [ 55.864985] ? __handle_mm_fault+0x2da9/0x5be0 [ 55.874128] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 55.878905] ? lock_downgrade+0x900/0x900 [ 55.878930] ? zap_class+0x640/0x640 [ 55.878949] ? do_raw_spin_trylock+0x270/0x270 [ 55.884436] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.887746] ? fault_dirty_shared_page.isra.87+0x320/0x320 [ 55.887765] ? find_held_lock+0x36/0x1c0 [ 55.887790] ? __fget+0x4aa/0x740 [ 55.892903] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.898584] ? lock_downgrade+0x900/0x900 [ 55.898601] ? check_preemption_disabled+0x48/0x280 [ 55.898617] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 55.898632] ? kasan_check_read+0x11/0x20 [ 55.898645] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 55.898656] ? rcu_softirq_qs+0x20/0x20 [ 55.898674] ? __fget+0x4d1/0x740 [ 55.902757] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.906607] ? ksys_dup3+0x680/0x680 [ 55.906621] ? find_held_lock+0x36/0x1c0 [ 55.906644] ? __do_page_fault+0x620/0xe60 [ 55.915844] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 55.920562] ? kvm_set_memory_region+0x50/0x50 [ 55.920578] do_vfs_ioctl+0x1de/0x1790 [ 55.920591] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 55.920603] ? rcu_softirq_qs+0x20/0x20 [ 55.920620] ? ioctl_preallocate+0x300/0x300 [ 55.928222] kobject: 'loop3' (0000000005b5310e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 55.930887] ? __fget_light+0x2e9/0x430 [ 55.930904] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.930920] ? smack_file_ioctl+0x210/0x3c0 [ 55.930942] ? fget_raw+0x20/0x20 [ 55.930957] ? smack_file_lock+0x2e0/0x2e0 [ 55.930974] ? up_read+0x225/0x2c0 [ 55.977337] ------------[ cut here ]------------ [ 55.980653] ? up_read_non_owner+0x100/0x100 [ 55.985214] downgrading a read lock [ 55.985313] WARNING: CPU: 1 PID: 5667 at kernel/locking/lockdep.c:3556 lock_downgrade+0x4d7/0x900 [ 55.991447] ? do_syscall_64+0x9a/0x820 [ 55.995568] Kernel panic - not syncing: panic_on_warn set ... [ 55.999280] ? do_syscall_64+0x9a/0x820 [ 56.187875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.193415] ? security_file_ioctl+0x94/0xc0 [ 56.197828] ksys_ioctl+0xa9/0xd0 [ 56.201286] __x64_sys_ioctl+0x73/0xb0 [ 56.205176] do_syscall_64+0x1b9/0x820 [ 56.209070] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 56.214437] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.219375] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.224224] ? trace_hardirqs_on_caller+0x310/0x310 [ 56.229250] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 56.234273] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.239297] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.244153] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.249346] RIP: 0033:0x4573d7 [ 56.252544] Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.271449] RSP: 002b:00007fb583f2f098 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.279172] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004573d7 [ 56.286466] RDX: 00007fb583f2f510 RSI: 000000004020ae46 RDI: 0000000000000004 [ 56.293744] RBP: 0000000020002000 R08: 0000000000000001 R09: 0000000000000000 [ 56.301017] R10: 0000000000000005 R11: 0000000000000246 R12: 00000000fec00000 [ 56.308313] R13: 0000000000000004 R14: 00000000004d8200 R15: 00000000ffffffff [ 56.315614] CPU: 1 PID: 5667 Comm: udevd Not tainted 4.20.0-rc1+ #99 [ 56.322128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.331486] Call Trace: [ 56.332626] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 56.334086] dump_stack+0x244/0x39d [ 56.342066] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 56.343934] ? dump_stack_print_info.cold.1+0x20/0x20 [ 56.358118] panic+0x2ad/0x55c [ 56.361328] ? add_taint.cold.5+0x16/0x16 [ 56.365476] ? __warn.cold.8+0x5/0x45 [ 56.369264] ? __warn+0xe8/0x1d0 [ 56.372613] ? lock_downgrade+0x4d7/0x900 [ 56.376745] __warn.cold.8+0x20/0x45 [ 56.380445] ? lock_downgrade+0x4d7/0x900 [ 56.384574] report_bug+0x254/0x2d0 [ 56.387715] kobject: 'kvm' (00000000968c974f): kobject_uevent_env [ 56.388195] do_error_trap+0x11b/0x200 [ 56.394459] kobject: 'kvm' (00000000968c974f): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 56.398294] do_invalid_op+0x36/0x40 [ 56.410989] ? lock_downgrade+0x4d7/0x900 [ 56.415160] invalid_op+0x14/0x20 [ 56.418596] RIP: 0010:lock_downgrade+0x4d7/0x900 [ 56.423335] Code: 00 00 fc ff df 41 c6 44 05 00 f8 e9 1b ff ff ff 48 c7 c7 60 65 2b 88 4c 89 9d 58 ff ff ff 48 89 85 60 ff ff ff e8 e9 22 e7 ff <0f> 0b 48 8b 85 60 ff ff ff 4c 8d 4d d8 4c 89 e9 48 ba 00 00 00 00 [ 56.442236] RSP: 0018:ffff8801d76a7b70 EFLAGS: 00010086 [ 56.447588] RAX: 0000000000000000 RBX: 1ffff1003aed4f74 RCX: 0000000000000000 [ 56.454842] RDX: 0000000000000000 RSI: ffffffff8165e9b5 RDI: 0000000000000006 [ 56.462106] RBP: ffff8801d76a7c28 R08: ffff8801d8f2c380 R09: fffffbfff12b225c [ 56.469360] R10: fffffbfff12b225c R11: ffffffff895912e3 R12: ffffffff8b0dd7a0 [ 56.476623] R13: ffff8801d76a7bc0 R14: 0000000000000001 R15: ffff8801d8f2c380 [ 56.483889] ? vprintk_func+0x85/0x181 [ 56.487783] ? __do_munmap+0xcd8/0xf80 [ 56.491655] ? lock_set_class+0x770/0x770 [ 56.495786] downgrade_write+0x76/0x270 [ 56.499750] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.505272] ? up_read+0x2c0/0x2c0 [ 56.508796] ? vma_compute_subtree_gap+0x160/0x240 [ 56.513710] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 56.518711] __do_munmap+0xcd8/0xf80 [ 56.522413] __vm_munmap+0x138/0x1f0 [ 56.526110] ? __do_munmap+0xf80/0xf80 [ 56.529988] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.535340] ? trace_hardirqs_off_caller+0x310/0x310 [ 56.540434] __x64_sys_munmap+0x65/0x80 [ 56.544413] do_syscall_64+0x1b9/0x820 [ 56.548290] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 56.553639] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.558552] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.563380] ? trace_hardirqs_on_caller+0x310/0x310 [ 56.568379] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.573387] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.578217] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.583391] RIP: 0033:0x7f03e1fe7d37 [ 56.587086] Code: f0 ff ff 73 01 c3 48 8b 0d fe c0 2a 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d1 c0 2a 00 31 d2 48 29 c2 64 [ 56.605971] RSP: 002b:00007ffd01ad81e8 EFLAGS: 00000206 ORIG_RAX: 000000000000000b [ 56.613664] RAX: ffffffffffffffda RBX: 00000000026151b0 RCX: 00007f03e1fe7d37 [ 56.620917] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00007f03e28de000 [ 56.628178] RBP: 0000000000000000 R08: 00007f03e28d77a0 R09: 0000000000000000 [ 56.635429] R10: 1999999999999999 R11: 0000000000000206 R12: 0000000000000000 [ 56.642680] R13: 00000000026151b0 R14: 0000000000000006 R15: 0000000000000ae8 [ 56.650873] Kernel Offset: disabled [ 56.654495] Rebooting in 86400 seconds..