Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. 2021/09/06 18:06:18 parsed 1 programs 2021/09/06 18:06:19 executed programs: 0 syzkaller login: [ 75.769464][ T8466] chnl_net:caif_netlink_parms(): no params data found [ 75.843491][ T8466] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.851910][ T8466] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.859933][ T8466] device bridge_slave_0 entered promiscuous mode [ 75.871138][ T8466] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.878500][ T8466] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.886630][ T8466] device bridge_slave_1 entered promiscuous mode [ 75.917437][ T8466] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.930044][ T8466] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.968098][ T8466] team0: Port device team_slave_0 added [ 75.976066][ T8466] team0: Port device team_slave_1 added [ 76.007617][ T8466] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.014872][ T8466] 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. [ 76.041262][ T8466] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.054671][ T8466] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.063857][ T8466] 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. [ 76.091913][ T8466] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.132369][ T8466] device hsr_slave_0 entered promiscuous mode [ 76.139272][ T8466] device hsr_slave_1 entered promiscuous mode [ 76.286525][ T8466] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.302058][ T8466] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.312556][ T8466] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.323261][ T8466] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.352279][ T8466] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.359809][ T8466] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.367699][ T8466] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.374891][ T8466] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.439831][ T8466] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.459752][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.475543][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.484606][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.494250][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.511189][ T8466] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.526522][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.536993][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.544348][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.563693][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.572669][ T8800] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.579747][ T8800] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.594097][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.603432][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.623140][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.631781][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.640111][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.654872][ T8466] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.672801][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.681428][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.695181][ T8466] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.714967][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.735674][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.745304][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.754045][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.766322][ T8466] device veth0_vlan entered promiscuous mode [ 76.777987][ T8466] device veth1_vlan entered promiscuous mode [ 76.806172][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.815391][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.827720][ T8466] device veth0_macvtap entered promiscuous mode [ 76.837534][ T8466] device veth1_macvtap entered promiscuous mode [ 76.855805][ T8466] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.865216][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.874125][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.884111][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.892870][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.905028][ T8466] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.913280][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.923003][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.935125][ T8466] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.945119][ T8466] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.954088][ T8466] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.963256][ T8466] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.053323][ T176] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.061864][ T176] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.093818][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.110044][ T176] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.128195][ T176] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.142459][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.602867][ T3114] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.938367][ T3114] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.035234][ T8835] chnl_net:caif_netlink_parms(): no params data found [ 82.117710][ T8835] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.125498][ T8835] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.135267][ T8835] device bridge_slave_0 entered promiscuous mode [ 82.144421][ T8835] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.151988][ T8835] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.159684][ T8835] device bridge_slave_1 entered promiscuous mode [ 82.282881][ T3114] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.297142][ T8835] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.308904][ T8835] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 82.344557][ T8835] team0: Port device team_slave_0 added [ 82.353804][ T8835] team0: Port device team_slave_1 added [ 82.478388][ T3114] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.495404][ T8835] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 82.502742][ T8835] 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. [ 82.528972][ T8835] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 82.543517][ T8835] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 82.550838][ T8835] 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. [ 82.576951][ T8835] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 82.613624][ T8835] device hsr_slave_0 entered promiscuous mode [ 82.621670][ T8835] device hsr_slave_1 entered promiscuous mode [ 82.628338][ T8835] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 82.637754][ T8835] Cannot create hsr debugfs directory [ 83.529414][ T8835] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.543863][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.553891][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.565064][ T8835] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.659887][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.668766][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.678880][ T8802] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.686146][ T8802] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.694510][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.703317][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.712006][ T8802] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.719083][ T8802] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.727201][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.735968][ T8802] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.840609][ T8835] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 83.852586][ T8835] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 83.864890][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.873553][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.882679][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.891556][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 83.900207][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.908764][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.917281][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.920746][ T8800] Bluetooth: hci0: command 0x0409 tx timeout [ 83.925826][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.939690][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.955250][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.963090][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.981993][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.989420][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.082739][ T8835] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.245198][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.254787][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.359012][ T8835] device veth0_vlan entered promiscuous mode [ 84.366214][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 84.375333][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.465701][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.473933][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.487613][ T8835] device veth1_vlan entered promiscuous mode [ 84.596116][ T8835] device veth0_macvtap entered promiscuous mode [ 84.604285][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.613595][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.625339][ T8835] device veth1_macvtap entered promiscuous mode [ 84.633569][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.643105][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.748310][ T8835] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 [ 84.759120][ T8835] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 84.772281][ T8835] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.780997][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.789545][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.803105][ T8835] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 [ 84.814303][ T8835] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 84.826602][ T8835] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.842521][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.851397][ T8800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.013600][ T3114] device hsr_slave_0 left promiscuous mode [ 85.027420][ T3114] device hsr_slave_1 left promiscuous mode [ 85.038168][ T3114] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 85.048381][ T3114] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 85.059089][ T3114] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 85.067378][ T3114] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 85.076603][ T3114] device bridge_slave_1 left promiscuous mode [ 85.084493][ T3114] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.097655][ T3114] device bridge_slave_0 left promiscuous mode [ 85.104390][ T3114] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.123545][ T3114] device veth1_macvtap left promiscuous mode [ 85.130927][ T3114] device veth0_macvtap left promiscuous mode [ 85.137000][ T3114] device veth1_vlan left promiscuous mode [ 85.143251][ T3114] device veth0_vlan left promiscuous mode [ 85.990268][ T8800] Bluetooth: hci0: command 0x041b tx timeout [ 88.072814][ T20] Bluetooth: hci0: command 0x040f tx timeout [ 88.720010][ T3114] team0 (unregistering): Port device team_slave_1 removed [ 88.735137][ T3114] team0 (unregistering): Port device team_slave_0 removed [ 88.748517][ T3114] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 88.766934][ T3114] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 88.824539][ T3114] bond0 (unregistering): Released all slaves [ 88.897711][ T10] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.905772][ T10] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 88.962410][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 88.976030][ T10] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.984940][ T10] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 88.994679][ T8801] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 91.817783][ T3114] device hsr_slave_0 left promiscuous mode [ 91.831922][ T3114] device hsr_slave_1 left promiscuous mode [ 91.838928][ T3114] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 91.848451][ T3114] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 91.858195][ T3114] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 91.867525][ T3114] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 91.876647][ T3114] device bridge_slave_1 left promiscuous mode [ 91.884283][ T3114] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.893208][ T3114] device bridge_slave_0 left promiscuous mode [ 91.899745][ T3114] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.911730][ T3114] device veth1_macvtap left promiscuous mode [ 91.917778][ T3114] device veth0_macvtap left promiscuous mode [ 91.924202][ T3114] device veth1_vlan left promiscuous mode [ 91.930816][ T3114] device veth0_vlan left promiscuous mode [ 93.589779][ T20] Bluetooth: hci0: command 0x0409 tx timeout [ 95.295359][ T22] ================================================================== [ 95.303569][ T22] BUG: KASAN: use-after-free in __d_alloc+0x19a/0x950 [ 95.310338][ T22] Read of size 5 at addr ffff88801878e620 by task kdevtmpfs/22 [ 95.317865][ T22] [ 95.320171][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 95.327886][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.337931][ T22] Call Trace: [ 95.341217][ T22] dump_stack_lvl+0xcd/0x134 [ 95.345808][ T22] print_address_description.constprop.0.cold+0x6c/0x309 [ 95.352830][ T22] ? __d_alloc+0x19a/0x950 [ 95.357237][ T22] ? __d_alloc+0x19a/0x950 [ 95.361639][ T22] kasan_report.cold+0x83/0xdf [ 95.366397][ T22] ? __d_alloc+0x19a/0x950 [ 95.370808][ T22] kasan_check_range+0x13d/0x180 [ 95.375762][ T22] memcpy+0x20/0x60 [ 95.379575][ T22] __d_alloc+0x19a/0x950 [ 95.383830][ T22] d_alloc+0x4a/0x230 [ 95.387829][ T22] __lookup_hash+0xc8/0x180 [ 95.392332][ T22] kern_path_locked+0x17e/0x320 [ 95.397172][ T22] ? filename_lookup+0x80/0x80 [ 95.401944][ T22] handle_remove+0xa2/0x5fe [ 95.406451][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 95.412084][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 95.418056][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 95.423898][ T22] ? find_held_lock+0x2d/0x110 [ 95.428835][ T22] ? devtmpfsd+0xaa/0x2a3 [ 95.433168][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 95.438024][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 95.443055][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 95.448002][ T22] devtmpfsd+0x1b9/0x2a3 [ 95.452246][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 95.457840][ T22] kthread+0x3e5/0x4d0 [ 95.461913][ T22] ? set_kthread_struct+0x130/0x130 [ 95.467157][ T22] ret_from_fork+0x1f/0x30 [ 95.471596][ T22] [ 95.473907][ T22] Allocated by task 22: [ 95.478040][ T22] kasan_save_stack+0x1b/0x40 [ 95.482707][ T22] __kasan_slab_alloc+0x83/0xb0 [ 95.487554][ T22] kmem_cache_alloc+0x285/0x4a0 [ 95.492410][ T22] getname_kernel+0x4e/0x370 [ 95.497002][ T22] kern_path_locked+0x71/0x320 [ 95.501766][ T22] handle_remove+0xa2/0x5fe [ 95.506273][ T22] devtmpfsd+0x1b9/0x2a3 [ 95.510518][ T22] kthread+0x3e5/0x4d0 [ 95.514579][ T22] ret_from_fork+0x1f/0x30 [ 95.518979][ T22] [ 95.521281][ T22] Freed by task 22: [ 95.525078][ T22] kasan_save_stack+0x1b/0x40 [ 95.529753][ T22] kasan_set_track+0x1c/0x30 [ 95.534327][ T22] kasan_set_free_info+0x20/0x30 [ 95.539243][ T22] __kasan_slab_free+0xff/0x130 [ 95.544172][ T22] slab_free_freelist_hook+0xe3/0x250 [ 95.549528][ T22] kmem_cache_free+0x8a/0x5b0 [ 95.554201][ T22] putname.part.0+0xe1/0x120 [ 95.558788][ T22] kern_path_locked+0xc2/0x320 [ 95.563567][ T22] handle_remove+0xa2/0x5fe [ 95.568059][ T22] devtmpfsd+0x1b9/0x2a3 [ 95.572283][ T22] kthread+0x3e5/0x4d0 [ 95.576338][ T22] ret_from_fork+0x1f/0x30 [ 95.580740][ T22] [ 95.583045][ T22] The buggy address belongs to the object at ffff88801878e600 [ 95.583045][ T22] which belongs to the cache names_cache of size 4096 [ 95.597163][ T22] The buggy address is located 32 bytes inside of [ 95.597163][ T22] 4096-byte region [ffff88801878e600, ffff88801878f600) [ 95.610433][ T22] The buggy address belongs to the page: [ 95.616048][ T22] page:ffffea000061e200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x18788 [ 95.626176][ T22] head:ffffea000061e200 order:3 compound_mapcount:0 compound_pincount:0 [ 95.634479][ T22] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 95.642450][ T22] raw: 00fff00000010200 0000000000000000 0000000100000001 ffff888010dc63c0 [ 95.651020][ T22] raw: 0000000000000000 0000000080070007 00000001ffffffff 0000000000000000 [ 95.659583][ T22] page dumped because: kasan: bad access detected [ 95.665977][ T22] page_owner tracks the page as allocated [ 95.671672][ 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 6463, ts 47015866372, free_ts 43732048179 [ 95.690755][ T22] get_page_from_freelist+0xa72/0x2f80 [ 95.696209][ T22] __alloc_pages+0x1b2/0x500 [ 95.700786][ T22] alloc_pages+0x1a7/0x300 [ 95.705191][ T22] allocate_slab+0x32e/0x4b0 [ 95.709769][ T22] ___slab_alloc+0x473/0x7b0 [ 95.714344][ T22] __slab_alloc.constprop.0+0xa7/0xf0 [ 95.719702][ T22] kmem_cache_alloc+0x3e1/0x4a0 [ 95.724536][ T22] getname_flags.part.0+0x50/0x4f0 [ 95.729633][ T22] getname_flags+0x9a/0xe0 [ 95.734051][ T22] user_path_at_empty+0x2b/0x90 [ 95.738903][ T22] vfs_statx+0x142/0x390 [ 95.743129][ T22] __do_sys_newlstat+0x91/0x110 [ 95.747981][ T22] do_syscall_64+0x35/0xb0 [ 95.752396][ T22] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 95.758282][ T22] page last free stack trace: [ 95.762952][ T22] free_pcp_prepare+0x2c5/0x780 [ 95.767803][ T22] free_unref_page+0x19/0x690 [ 95.772467][ T22] unfreeze_partials+0x16c/0x1b0 [ 95.777410][ T22] put_cpu_partial+0x13d/0x230 [ 95.782157][ T22] qlist_free_all+0x5a/0xc0 [ 95.786656][ T22] kasan_quarantine_reduce+0x180/0x200 [ 95.792101][ T22] __kasan_slab_alloc+0x95/0xb0 [ 95.796958][ T22] __kmalloc+0x1f4/0x330 [ 95.801220][ T22] tomoyo_realpath_from_path+0xc3/0x620 [ 95.806763][ T22] tomoyo_path_perm+0x21b/0x400 [ 95.811644][ T22] security_inode_getattr+0xcf/0x140 [ 95.817010][ T22] vfs_statx+0x164/0x390 [ 95.821291][ T22] __do_sys_newstat+0x91/0x110 [ 95.826078][ T22] do_syscall_64+0x35/0xb0 [ 95.830523][ T22] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 95.836425][ T22] [ 95.838740][ T22] Memory state around the buggy address: [ 95.844360][ T22] ffff88801878e500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 95.852413][ T22] ffff88801878e580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 95.860469][ T22] >ffff88801878e600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 95.868728][ T22] ^ [ 95.873833][ T22] ffff88801878e680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 95.881938][ T22] ffff88801878e700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 95.890091][ T22] ================================================================== [ 95.898143][ T22] Disabling lock debugging due to kernel taint [ 95.904849][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 95.912060][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Tainted: G B 5.14.0-syzkaller #0 [ 95.921175][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.931255][ T22] Call Trace: [ 95.934563][ T22] dump_stack_lvl+0xcd/0x134 [ 95.939201][ T22] panic+0x2b0/0x6dd [ 95.943087][ T22] ? __warn_printk+0xf3/0xf3 [ 95.947664][ T22] ? preempt_schedule_common+0x59/0xc0 [ 95.953131][ T22] ? __d_alloc+0x19a/0x950 [ 95.957545][ T22] ? preempt_schedule_thunk+0x16/0x18 [ 95.962911][ T22] ? trace_hardirqs_on+0x38/0x1c0 [ 95.967926][ T22] ? trace_hardirqs_on+0x51/0x1c0 [ 95.972946][ T22] ? __d_alloc+0x19a/0x950 [ 95.977402][ T22] ? __d_alloc+0x19a/0x950 [ 95.981815][ T22] end_report.cold+0x63/0x6f [ 95.986434][ T22] kasan_report.cold+0x71/0xdf [ 95.991224][ T22] ? __d_alloc+0x19a/0x950 [ 95.995629][ T22] kasan_check_range+0x13d/0x180 [ 96.000553][ T22] memcpy+0x20/0x60 [ 96.004361][ T22] __d_alloc+0x19a/0x950 [ 96.008589][ T22] d_alloc+0x4a/0x230 [ 96.012582][ T22] __lookup_hash+0xc8/0x180 [ 96.017069][ T22] kern_path_locked+0x17e/0x320 [ 96.021905][ T22] ? filename_lookup+0x80/0x80 [ 96.026664][ T22] handle_remove+0xa2/0x5fe [ 96.031174][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 96.036806][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 96.042773][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 96.048584][ T22] ? find_held_lock+0x2d/0x110 [ 96.053342][ T22] ? devtmpfsd+0xaa/0x2a3 [ 96.057653][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 96.062504][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 96.067535][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 96.072473][ T22] devtmpfsd+0x1b9/0x2a3 [ 96.076701][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 96.082236][ T22] kthread+0x3e5/0x4d0 [ 96.086292][ T22] ? set_kthread_struct+0x130/0x130 [ 96.091474][ T22] ret_from_fork+0x1f/0x30 [ 96.097178][ T22]