Warning: Permanently added '10.128.1.39' (ECDSA) to the list of known hosts. 2021/09/06 02:53:15 parsed 1 programs 2021/09/06 02:53:15 executed programs: 0 syzkaller login: [ 1070.188848][ T8460] chnl_net:caif_netlink_parms(): no params data found [ 1070.235430][ T8460] bridge0: port 1(bridge_slave_0) entered blocking state [ 1070.242950][ T8460] bridge0: port 1(bridge_slave_0) entered disabled state [ 1070.250470][ T8460] device bridge_slave_0 entered promiscuous mode [ 1070.258658][ T8460] bridge0: port 2(bridge_slave_1) entered blocking state [ 1070.266162][ T8460] bridge0: port 2(bridge_slave_1) entered disabled state [ 1070.273984][ T8460] device bridge_slave_1 entered promiscuous mode [ 1070.296246][ T8460] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1070.306646][ T8460] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1070.330154][ T8460] team0: Port device team_slave_0 added [ 1070.337099][ T8460] team0: Port device team_slave_1 added [ 1070.357702][ T8460] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1070.365104][ T8460] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 1070.391906][ T8460] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1070.403854][ T8460] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1070.411357][ T8460] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 1070.437843][ T8460] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1070.464472][ T8460] device hsr_slave_0 entered promiscuous mode [ 1070.471065][ T8460] device hsr_slave_1 entered promiscuous mode [ 1070.546545][ T8460] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1070.556293][ T8460] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1070.565588][ T8460] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1070.574780][ T8460] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1070.591289][ T8460] bridge0: port 2(bridge_slave_1) entered blocking state [ 1070.598496][ T8460] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1070.605918][ T8460] bridge0: port 1(bridge_slave_0) entered blocking state [ 1070.613109][ T8460] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1070.642630][ T8460] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1070.654301][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1070.663118][ T8335] bridge0: port 1(bridge_slave_0) entered disabled state [ 1070.670817][ T8335] bridge0: port 2(bridge_slave_1) entered disabled state [ 1070.678511][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1070.689526][ T8460] 8021q: adding VLAN 0 to HW filter on device team0 [ 1070.699384][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1070.708340][ T8335] bridge0: port 1(bridge_slave_0) entered blocking state [ 1070.715418][ T8335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1070.725341][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1070.733660][ T8534] bridge0: port 2(bridge_slave_1) entered blocking state [ 1070.740763][ T8534] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1070.762130][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1070.770671][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1070.779569][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1070.788412][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1070.798818][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1070.807094][ T8460] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1070.822138][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1070.829509][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1070.841195][ T8460] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1070.856543][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1070.873790][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1070.882086][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1070.891998][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1070.902326][ T8460] device veth0_vlan entered promiscuous mode [ 1070.912795][ T8460] device veth1_vlan entered promiscuous mode [ 1070.929033][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1070.937264][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1070.945662][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1070.956665][ T8460] device veth0_macvtap entered promiscuous mode [ 1070.965246][ T8460] device veth1_macvtap entered promiscuous mode [ 1070.979337][ T8460] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1070.987006][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1070.996153][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1071.007610][ T8460] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1071.015480][ T8534] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1071.026033][ T8460] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1071.035467][ T8460] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1071.044407][ T8460] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1071.053437][ T8460] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1071.099275][ T130] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1071.116409][ T130] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1071.142275][ T8432] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1071.144241][ T8335] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1071.150112][ T8432] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1071.166319][ T8794] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1071.346050][ T130] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1074.248229][ T130] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1076.298642][ T8829] chnl_net:caif_netlink_parms(): no params data found [ 1076.341995][ T8829] bridge0: port 1(bridge_slave_0) entered blocking state [ 1076.349114][ T8829] bridge0: port 1(bridge_slave_0) entered disabled state [ 1076.357381][ T8829] device bridge_slave_0 entered promiscuous mode [ 1076.366085][ T8829] bridge0: port 2(bridge_slave_1) entered blocking state [ 1076.373721][ T8829] bridge0: port 2(bridge_slave_1) entered disabled state [ 1076.382315][ T8829] device bridge_slave_1 entered promiscuous mode [ 1076.404122][ T8829] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1076.415074][ T8829] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1076.460283][ T130] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1076.472606][ T8829] team0: Port device team_slave_0 added [ 1076.479727][ T8829] team0: Port device team_slave_1 added [ 1076.502918][ T8829] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1076.509918][ T8829] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 1076.536577][ T8829] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1076.568523][ T130] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 1076.580127][ T8829] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1076.587576][ T8829] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 1076.614123][ T8829] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1076.641763][ T8829] device hsr_slave_0 entered promiscuous mode [ 1076.648073][ T8829] device hsr_slave_1 entered promiscuous mode [ 1076.654920][ T8829] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 1076.663778][ T8829] Cannot create hsr debugfs directory [ 1076.818722][ T8829] bridge0: port 2(bridge_slave_1) entered blocking state [ 1076.825838][ T8829] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1076.833196][ T8829] bridge0: port 1(bridge_slave_0) entered blocking state [ 1076.840255][ T8829] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1077.178828][ T8829] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1077.191849][ T8794] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1077.200279][ T8794] bridge0: port 1(bridge_slave_0) entered disabled state [ 1077.209641][ T8794] bridge0: port 2(bridge_slave_1) entered disabled state [ 1077.217631][ T8794] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1077.247552][ T8829] 8021q: adding VLAN 0 to HW filter on device team0 [ 1077.257666][ T8794] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1077.266125][ T8794] bridge0: port 1(bridge_slave_0) entered blocking state [ 1077.273232][ T8794] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1077.283885][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 1077.292307][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1077.300830][ T8796] bridge0: port 2(bridge_slave_1) entered blocking state [ 1077.307875][ T8796] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1077.320424][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 1077.340413][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 1077.348910][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 1077.357844][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1077.366764][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 1077.375460][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1077.383956][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 1077.392572][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1077.400997][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 1077.409528][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1077.446311][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1077.454497][ T8829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1077.470085][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1077.477908][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1077.489450][ T8829] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1077.591728][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 1077.601497][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1077.615377][ T8829] device veth0_vlan entered promiscuous mode [ 1077.648967][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 1077.657044][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1077.669730][ T8829] device veth1_vlan entered promiscuous mode [ 1077.676611][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1077.684763][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1077.692460][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1077.730084][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1077.739357][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1077.747671][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1077.779319][ T8829] device veth0_macvtap entered promiscuous mode [ 1077.788884][ T8829] device veth1_macvtap entered promiscuous mode [ 1077.803476][ T8829] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 [ 1077.814062][ T8829] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 1077.825776][ T8829] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1077.834208][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1077.843908][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1077.852269][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1077.861080][ T8793] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1077.873887][ T8829] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 [ 1077.884722][ T8829] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 1077.896194][ T8829] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1077.924729][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1077.933471][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1077.990887][ T130] device hsr_slave_0 left promiscuous mode [ 1077.997895][ T130] device hsr_slave_1 left promiscuous mode [ 1078.006891][ T130] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 1078.014688][ T130] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 1078.022855][ T130] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 1078.030237][ T130] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 1078.038521][ T130] device bridge_slave_1 left promiscuous mode [ 1078.044987][ T130] bridge0: port 2(bridge_slave_1) entered disabled state [ 1078.052878][ T130] device bridge_slave_0 left promiscuous mode [ 1078.059012][ T130] bridge0: port 1(bridge_slave_0) entered disabled state [ 1078.068322][ T130] device veth1_macvtap left promiscuous mode [ 1078.074532][ T130] device veth0_macvtap left promiscuous mode [ 1078.080675][ T130] device veth1_vlan left promiscuous mode [ 1078.086464][ T130] device veth0_vlan left promiscuous mode [ 1078.251632][ T9166] Bluetooth: hci0: command 0x0409 tx timeout [ 1078.964017][ T130] team0 (unregistering): Port device team_slave_1 removed [ 1078.973596][ T130] team0 (unregistering): Port device team_slave_0 removed [ 1078.983160][ T130] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 1078.996244][ T130] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 1079.024530][ T130] bond0 (unregistering): Released all slaves [ 1079.070811][ T9193] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1079.101314][ T8432] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1079.101696][ T9193] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1079.109142][ T8432] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1079.109289][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1079.133142][ T8796] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1080.504994][ T130] device hsr_slave_0 left promiscuous mode [ 1080.511856][ T130] device hsr_slave_1 left promiscuous mode [ 1080.517973][ T130] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 1080.525426][ T130] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 1080.533203][ T130] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 1080.540644][ T130] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 1080.548488][ T130] device bridge_slave_1 left promiscuous mode [ 1080.555151][ T130] bridge0: port 2(bridge_slave_1) entered disabled state [ 1080.563670][ T130] device bridge_slave_0 left promiscuous mode [ 1080.570005][ T130] bridge0: port 1(bridge_slave_0) entered disabled state [ 1080.579805][ T130] device veth1_macvtap left promiscuous mode [ 1080.586580][ T130] device veth0_macvtap left promiscuous mode [ 1080.592725][ T130] device veth1_vlan left promiscuous mode [ 1080.598621][ T130] device veth0_vlan left promiscuous mode [ 1081.438469][ T22] ================================================================== [ 1081.446546][ T22] BUG: KASAN: use-after-free in __d_alloc+0x19a/0x950 [ 1081.453398][ T22] Read of size 5 at addr ffff88807d094420 by task kdevtmpfs/22 [ 1081.461027][ T22] [ 1081.463334][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 1081.471039][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1081.481193][ T22] Call Trace: [ 1081.484478][ T22] dump_stack_lvl+0xcd/0x134 [ 1081.489161][ T22] print_address_description.constprop.0.cold+0x6c/0x309 [ 1081.496353][ T22] ? __d_alloc+0x19a/0x950 [ 1081.500769][ T22] ? __d_alloc+0x19a/0x950 [ 1081.505180][ T22] kasan_report.cold+0x83/0xdf [ 1081.509958][ T22] ? __d_alloc+0x19a/0x950 [ 1081.514454][ T22] kasan_check_range+0x13d/0x180 [ 1081.519439][ T22] memcpy+0x20/0x60 [ 1081.523270][ T22] __d_alloc+0x19a/0x950 [ 1081.527514][ T22] d_alloc+0x4a/0x230 [ 1081.531490][ T22] __lookup_hash+0xc8/0x180 [ 1081.535988][ T22] kern_path_locked+0x17e/0x320 [ 1081.540835][ T22] ? filename_lookup+0x80/0x80 [ 1081.545610][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1081.551137][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1081.556597][ T22] handle_remove+0xa2/0x5fe [ 1081.561169][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 1081.566061][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 1081.571710][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 1081.577561][ T22] ? trace_hardirqs_on+0x5b/0x1c0 [ 1081.582615][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 1081.588413][ T22] ? __switch_to+0x5cc/0x1060 [ 1081.593149][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1081.598599][ T22] ? lock_acquire+0x442/0x510 [ 1081.603269][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1081.608724][ T22] ? lock_release+0x522/0x720 [ 1081.613392][ T22] ? devtmpfsd+0xaa/0x2a3 [ 1081.617752][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 1081.622608][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 1081.627626][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 1081.632561][ T22] devtmpfsd+0x1b9/0x2a3 [ 1081.636797][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 1081.642340][ T22] kthread+0x3e5/0x4d0 [ 1081.646559][ T22] ? set_kthread_struct+0x130/0x130 [ 1081.651752][ T22] ret_from_fork+0x1f/0x30 [ 1081.656183][ T22] [ 1081.658531][ T22] Allocated by task 22: [ 1081.662670][ T22] kasan_save_stack+0x1b/0x40 [ 1081.667343][ T22] __kasan_slab_alloc+0x83/0xb0 [ 1081.672308][ T22] kmem_cache_alloc+0x285/0x4a0 [ 1081.677164][ T22] getname_kernel+0x4e/0x370 [ 1081.681758][ T22] kern_path_locked+0x71/0x320 [ 1081.686539][ T22] handle_remove+0xa2/0x5fe [ 1081.691050][ T22] devtmpfsd+0x1b9/0x2a3 [ 1081.695347][ T22] kthread+0x3e5/0x4d0 [ 1081.699497][ T22] ret_from_fork+0x1f/0x30 [ 1081.703908][ T22] [ 1081.706216][ T22] Freed by task 22: [ 1081.710010][ T22] kasan_save_stack+0x1b/0x40 [ 1081.714685][ T22] kasan_set_track+0x1c/0x30 [ 1081.719287][ T22] kasan_set_free_info+0x20/0x30 [ 1081.724212][ T22] __kasan_slab_free+0xff/0x130 [ 1081.729067][ T22] slab_free_freelist_hook+0xe3/0x250 [ 1081.734434][ T22] kmem_cache_free+0x8a/0x5b0 [ 1081.739108][ T22] putname.part.0+0xe1/0x120 [ 1081.743688][ T22] kern_path_locked+0xc2/0x320 [ 1081.748460][ T22] handle_remove+0xa2/0x5fe [ 1081.752960][ T22] devtmpfsd+0x1b9/0x2a3 [ 1081.757195][ T22] kthread+0x3e5/0x4d0 [ 1081.761261][ T22] ret_from_fork+0x1f/0x30 [ 1081.765757][ T22] [ 1081.768064][ T22] The buggy address belongs to the object at ffff88807d094400 [ 1081.768064][ T22] which belongs to the cache names_cache of size 4096 [ 1081.782192][ T22] The buggy address is located 32 bytes inside of [ 1081.782192][ T22] 4096-byte region [ffff88807d094400, ffff88807d095400) [ 1081.795454][ T22] The buggy address belongs to the page: [ 1081.801064][ T22] page:ffffea0001f42400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7d090 [ 1081.811204][ T22] head:ffffea0001f42400 order:3 compound_mapcount:0 compound_pincount:0 [ 1081.819607][ T22] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 1081.827585][ T22] raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888010dc63c0 [ 1081.836159][ T22] raw: 0000000000000000 0000000080070007 00000001ffffffff 0000000000000000 [ 1081.844737][ T22] page dumped because: kasan: bad access detected [ 1081.851136][ T22] page_owner tracks the page as allocated [ 1081.856836][ T22] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5002, ts 29886354938, free_ts 29811565992 [ 1081.876105][ T22] get_page_from_freelist+0xa72/0x2f80 [ 1081.881600][ T22] __alloc_pages+0x1b2/0x500 [ 1081.886179][ T22] alloc_pages+0x1a7/0x300 [ 1081.890645][ T22] allocate_slab+0x32e/0x4b0 [ 1081.895233][ T22] ___slab_alloc+0x473/0x7b0 [ 1081.899816][ T22] __slab_alloc.constprop.0+0xa7/0xf0 [ 1081.905193][ T22] kmem_cache_alloc+0x3e1/0x4a0 [ 1081.910058][ T22] getname_flags.part.0+0x50/0x4f0 [ 1081.915176][ T22] getname_flags+0x9a/0xe0 [ 1081.919588][ T22] __x64_sys_rename+0x65/0xa0 [ 1081.924343][ T22] do_syscall_64+0x35/0xb0 [ 1081.928806][ T22] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1081.934717][ T22] page last free stack trace: [ 1081.939384][ T22] free_pcp_prepare+0x2c5/0x780 [ 1081.944228][ T22] free_unref_page+0x19/0x690 [ 1081.948909][ T22] unfreeze_partials+0x16c/0x1b0 [ 1081.953840][ T22] put_cpu_partial+0x13d/0x230 [ 1081.958598][ T22] qlist_free_all+0x5a/0xc0 [ 1081.963093][ T22] kasan_quarantine_reduce+0x180/0x200 [ 1081.968543][ T22] __kasan_slab_alloc+0x95/0xb0 [ 1081.973401][ T22] kmem_cache_alloc+0x285/0x4a0 [ 1081.978246][ T22] getname_flags.part.0+0x50/0x4f0 [ 1081.983351][ T22] getname+0x8e/0xd0 [ 1081.987238][ T22] do_sys_openat2+0xf5/0x4d0 [ 1081.992060][ T22] __x64_sys_open+0x119/0x1c0 [ 1081.996729][ T22] do_syscall_64+0x35/0xb0 [ 1082.001138][ T22] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1082.007026][ T22] [ 1082.009335][ T22] Memory state around the buggy address: [ 1082.014961][ T22] ffff88807d094300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1082.023009][ T22] ffff88807d094380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1082.031058][ T22] >ffff88807d094400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1082.039103][ T22] ^ [ 1082.044196][ T22] ffff88807d094480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1082.052250][ T22] ffff88807d094500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1082.060295][ T22] ================================================================== [ 1082.079253][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 1082.085870][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Tainted: G B 5.14.0-syzkaller #0 [ 1082.094973][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1082.105019][ T22] Call Trace: [ 1082.108284][ T22] dump_stack_lvl+0xcd/0x134 [ 1082.112868][ T22] panic+0x2b0/0x6dd [ 1082.116791][ T22] ? __warn_printk+0xf3/0xf3 [ 1082.121548][ T22] ? preempt_schedule_common+0x59/0xc0 [ 1082.127004][ T22] ? __d_alloc+0x19a/0x950 [ 1082.131414][ T22] ? preempt_schedule_thunk+0x16/0x18 [ 1082.136785][ T22] ? trace_hardirqs_on+0x38/0x1c0 [ 1082.141805][ T22] ? trace_hardirqs_on+0x51/0x1c0 [ 1082.146822][ T22] ? __d_alloc+0x19a/0x950 [ 1082.151229][ T22] ? __d_alloc+0x19a/0x950 [ 1082.155636][ T22] end_report.cold+0x63/0x6f [ 1082.160222][ T22] kasan_report.cold+0x71/0xdf [ 1082.164981][ T22] ? __d_alloc+0x19a/0x950 [ 1082.169388][ T22] kasan_check_range+0x13d/0x180 [ 1082.174322][ T22] memcpy+0x20/0x60 [ 1082.178123][ T22] __d_alloc+0x19a/0x950 [ 1082.182360][ T22] d_alloc+0x4a/0x230 [ 1082.186341][ T22] __lookup_hash+0xc8/0x180 [ 1082.190841][ T22] kern_path_locked+0x17e/0x320 [ 1082.195687][ T22] ? filename_lookup+0x80/0x80 [ 1082.200533][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1082.205986][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1082.211475][ T22] handle_remove+0xa2/0x5fe [ 1082.215998][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 1082.220841][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 1082.226472][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 1082.232271][ T22] ? trace_hardirqs_on+0x5b/0x1c0 [ 1082.237292][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 1082.243105][ T22] ? __switch_to+0x5cc/0x1060 [ 1082.247786][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1082.253346][ T22] ? lock_acquire+0x442/0x510 [ 1082.258029][ T22] ? rcu_read_lock_sched_held+0xd/0x70 [ 1082.263489][ T22] ? lock_release+0x522/0x720 [ 1082.268250][ T22] ? devtmpfsd+0xaa/0x2a3 [ 1082.272589][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 1082.277463][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 1082.282496][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 1082.287446][ T22] devtmpfsd+0x1b9/0x2a3 [ 1082.291685][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 1082.297227][ T22] kthread+0x3e5/0x4d0 [ 1082.301296][ T22] ? set_kthread_struct+0x130/0x130 [ 1082.306506][ T22] ret_from_fork+0x1f/0x30 [ 1082.310993][ T22] Kernel Offset: disabled [ 1082.315301][ T22] Rebooting in 86400 seconds..