[ OK ] Started Daily apt upgrade and clean activities. Starting OpenBSD Secure Shell server... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. [ OK ] Started Regular background program processing daemon. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. Debian GNU/Linux 9 syzkaller ttyS0 2021/09/07 03:49:39 parsed 1 programs 2021/09/07 03:49:39 executed programs: 0 syzkaller login: [ 80.060898][ T37] audit: type=1400 audit(1630986579.473:8): avc: denied { execmem } for pid=8444 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 81.401564][ T8445] chnl_net:caif_netlink_parms(): no params data found [ 81.473768][ T8445] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.481840][ T8445] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.490766][ T8445] device bridge_slave_0 entered promiscuous mode [ 81.500071][ T8445] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.507887][ T8445] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.515945][ T8445] device bridge_slave_1 entered promiscuous mode [ 81.547274][ T8445] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.558183][ T8445] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.595179][ T8445] team0: Port device team_slave_0 added [ 81.602551][ T8445] team0: Port device team_slave_1 added [ 81.630300][ T8445] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.637577][ T8445] 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. [ 81.663943][ T8445] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.676785][ T8445] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.683840][ T8445] 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. [ 81.710241][ T8445] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.750387][ T8445] device hsr_slave_0 entered promiscuous mode [ 81.757610][ T8445] device hsr_slave_1 entered promiscuous mode [ 81.890085][ T8445] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.901834][ T8445] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.912159][ T8445] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.922423][ T8445] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.949346][ T8445] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.956555][ T8445] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.964297][ T8445] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.971356][ T8445] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.016342][ T8445] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.029685][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.041435][ T3155] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.050494][ T3155] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.059114][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 82.072929][ T8445] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.084626][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.093139][ T4850] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.100512][ T4850] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.115245][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.123844][ T3155] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.130979][ T3155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.155294][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.163984][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.172667][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.186221][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.197327][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.208203][ T8445] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.226317][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.233703][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.248246][ T8445] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.268523][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.290336][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.298851][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.307889][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.320018][ T8445] device veth0_vlan entered promiscuous mode [ 82.332404][ T8445] device veth1_vlan entered promiscuous mode [ 82.354095][ T8445] device veth0_macvtap entered promiscuous mode [ 82.362582][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.372521][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.381243][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.390893][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.403254][ T8445] device veth1_macvtap entered promiscuous mode [ 82.420089][ T8445] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.429945][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.438500][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.450431][ T8445] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.458126][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.467914][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.479784][ T8445] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.489702][ T8445] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.498936][ T8445] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.508892][ T8445] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.607854][ T29] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.618717][ T29] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.630268][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.667102][ T169] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.675937][ T169] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.688799][ T8775] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.128348][ T8] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2021/09/07 03:49:44 executed programs: 2 [ 85.185524][ T8445] syz-executor.0 (8445) used greatest stack depth: 22624 bytes left [ 85.478052][ T8] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 87.472749][ T8811] chnl_net:caif_netlink_parms(): no params data found [ 87.546237][ T8811] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.555989][ T8811] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.563695][ T8811] device bridge_slave_0 entered promiscuous mode [ 87.573343][ T8811] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.581100][ T8811] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.591153][ T8811] device bridge_slave_1 entered promiscuous mode [ 87.628928][ T8811] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.642010][ T8811] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.760491][ T8] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 87.792495][ T8811] team0: Port device team_slave_0 added [ 87.800842][ T8811] team0: Port device team_slave_1 added [ 87.921233][ T8] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 87.933297][ T8811] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 87.941289][ T8811] 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. [ 87.968950][ T8811] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 87.982051][ T8811] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 87.989657][ T8811] 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. [ 88.016397][ T8811] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 88.055751][ T8811] device hsr_slave_0 entered promiscuous mode [ 88.062566][ T8811] device hsr_slave_1 entered promiscuous mode [ 88.069959][ T8811] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 88.078047][ T8811] Cannot create hsr debugfs directory [ 89.014628][ T8811] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.108438][ T8811] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.115595][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 89.123400][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.213838][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 89.222319][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.232956][ T3702] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.240040][ T3702] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.247882][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 89.257079][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.265895][ T3702] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.272959][ T3702] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.289102][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 89.297422][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 89.314731][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 89.323240][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 89.325098][ T2934] Bluetooth: hci0: command 0x0409 tx timeout [ 89.332395][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.347494][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.365189][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 89.373688][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.383004][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 89.392090][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.402323][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 89.411012][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.495576][ T8811] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.514951][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.522331][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 89.616395][ T8811] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.863853][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 89.872500][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.892043][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 89.901332][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.910897][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.919468][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 90.003628][ T8811] device veth0_vlan entered promiscuous mode [ 90.016548][ T8811] device veth1_vlan entered promiscuous mode [ 90.040903][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 90.050467][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 90.059622][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 90.069072][ T3155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 90.080793][ T8811] device veth0_macvtap entered promiscuous mode [ 90.177358][ T8811] device veth1_macvtap entered promiscuous mode [ 90.194781][ T8811] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 [ 90.206461][ T8811] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 90.218982][ T8811] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 90.229398][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 90.238041][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 90.246327][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 90.255353][ T3702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 90.268306][ T8811] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 [ 90.279150][ T8811] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 90.291220][ T8811] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 90.307758][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 90.316914][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 90.505981][ T8] device hsr_slave_0 left promiscuous mode [ 90.521012][ T8] device hsr_slave_1 left promiscuous mode [ 90.530245][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 90.538039][ T8] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 90.548084][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 90.556337][ T8] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 90.565273][ T8] device bridge_slave_1 left promiscuous mode [ 90.572239][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.587960][ T8] device bridge_slave_0 left promiscuous mode [ 90.595687][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.611165][ T8] device veth1_macvtap left promiscuous mode [ 90.617577][ T8] device veth0_macvtap left promiscuous mode [ 90.623632][ T8] device veth1_vlan left promiscuous mode [ 90.630405][ T8] device veth0_vlan left promiscuous mode [ 91.404095][ T9163] Bluetooth: hci0: command 0x041b tx timeout [ 93.493826][ T20] Bluetooth: hci0: command 0x040f tx timeout [ 94.127464][ T8] team0 (unregistering): Port device team_slave_1 removed [ 94.142972][ T8] team0 (unregistering): Port device team_slave_0 removed [ 94.155479][ T8] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 94.170420][ T8] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 94.223110][ T8] bond0 (unregistering): Released all slaves [ 94.293932][ T8809] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 94.331572][ T8809] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 94.381163][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 94.391780][ T8809] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 94.400906][ T8809] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 94.411740][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/09/07 03:49:53 executed programs: 4 [ 97.327109][ T8] device hsr_slave_0 left promiscuous mode [ 97.338981][ T8] device hsr_slave_1 left promiscuous mode [ 97.347844][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 97.357459][ T8] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 97.367236][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 97.375020][ T8] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 97.385701][ T8] device bridge_slave_1 left promiscuous mode [ 97.391908][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.400650][ T8] device bridge_slave_0 left promiscuous mode [ 97.407969][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.420542][ T8] device veth1_macvtap left promiscuous mode [ 97.427716][ T8] device veth0_macvtap left promiscuous mode [ 97.433847][ T8] device veth1_vlan left promiscuous mode [ 97.439594][ T8] device veth0_vlan left promiscuous mode [ 99.002587][ T3702] Bluetooth: hci0: command 0x0409 tx timeout [ 100.708512][ T22] ================================================================== [ 100.716818][ T22] BUG: KASAN: use-after-free in __d_alloc+0x19a/0x950 [ 100.723580][ T22] Read of size 5 at addr ffff88806b296520 by task kdevtmpfs/22 [ 100.731223][ T22] [ 100.733533][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 100.741242][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.751279][ T22] Call Trace: [ 100.754554][ T22] dump_stack_lvl+0xcd/0x134 [ 100.759598][ T22] print_address_description.constprop.0.cold+0x6c/0x2d6 [ 100.766634][ T22] ? __d_alloc+0x19a/0x950 [ 100.771047][ T22] ? __d_alloc+0x19a/0x950 [ 100.775455][ T22] kasan_report.cold+0x83/0xdf [ 100.780213][ T22] ? __d_alloc+0x19a/0x950 [ 100.784627][ T22] kasan_check_range+0x13d/0x180 [ 100.789567][ T22] memcpy+0x20/0x60 [ 100.793387][ T22] __d_alloc+0x19a/0x950 [ 100.797621][ T22] d_alloc+0x4a/0x230 [ 100.801595][ T22] __lookup_hash+0xc8/0x180 [ 100.806090][ T22] kern_path_locked+0x17e/0x320 [ 100.810936][ T22] ? filename_lookup+0x80/0x80 [ 100.815701][ T22] handle_remove+0xa2/0x5fe [ 100.820200][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 100.825837][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 100.831828][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 100.837646][ T22] ? find_held_lock+0x2d/0x110 [ 100.842409][ T22] ? devtmpfsd+0xaa/0x2a3 [ 100.846744][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 100.851594][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 100.856626][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 100.861822][ T22] devtmpfsd+0x1b9/0x2a3 [ 100.866075][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 100.871631][ T22] kthread+0x3e5/0x4d0 [ 100.875713][ T22] ? set_kthread_struct+0x130/0x130 [ 100.880922][ T22] ret_from_fork+0x1f/0x30 [ 100.885350][ T22] [ 100.887666][ T22] Allocated by task 22: [ 100.891811][ T22] kasan_save_stack+0x1b/0x40 [ 100.896488][ T22] __kasan_slab_alloc+0x80/0xa0 [ 100.901346][ T22] kmem_cache_alloc+0x25f/0x540 [ 100.906189][ T22] getname_kernel+0x4e/0x370 [ 100.910774][ T22] kern_path_locked+0x71/0x320 [ 100.915543][ T22] handle_remove+0xa2/0x5fe [ 100.920037][ T22] devtmpfsd+0x1b9/0x2a3 [ 100.924273][ T22] kthread+0x3e5/0x4d0 [ 100.928334][ T22] ret_from_fork+0x1f/0x30 [ 100.932744][ T22] [ 100.935057][ T22] Freed by task 22: [ 100.938849][ T22] kasan_save_stack+0x1b/0x40 [ 100.943530][ T22] kasan_set_track+0x1c/0x30 [ 100.948111][ T22] kasan_set_free_info+0x20/0x30 [ 100.953045][ T22] __kasan_slab_free+0xd1/0x110 [ 100.957899][ T22] kmem_cache_free+0x6c/0x200 [ 100.962574][ T22] putname.part.0+0xe1/0x120 [ 100.967158][ T22] kern_path_locked+0xc2/0x320 [ 100.971918][ T22] handle_remove+0xa2/0x5fe [ 100.976414][ T22] devtmpfsd+0x1b9/0x2a3 [ 100.980653][ T22] kthread+0x3e5/0x4d0 [ 100.984713][ T22] ret_from_fork+0x1f/0x30 [ 100.989209][ T22] [ 100.991539][ T22] The buggy address belongs to the object at ffff88806b296500 [ 100.991539][ T22] which belongs to the cache names_cache of size 4096 [ 101.005669][ T22] The buggy address is located 32 bytes inside of [ 101.005669][ T22] 4096-byte region [ffff88806b296500, ffff88806b297500) [ 101.018938][ T22] The buggy address belongs to the page: [ 101.024550][ T22] page:ffffea0001aca580 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6b296 [ 101.034687][ T22] head:ffffea0001aca580 order:1 compound_mapcount:0 [ 101.041275][ T22] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 101.049343][ T22] raw: 00fff00000010200 ffffea0001aca488 ffffea0001acae08 ffff8880114ba600 [ 101.057923][ T22] raw: 0000000000000000 ffff88806b296500 0000000100000001 0000000000000000 [ 101.066663][ T22] page dumped because: kasan: bad access detected [ 101.073061][ T22] page_owner tracks the page as allocated [ 101.078757][ T22] page last allocated via order 1, migratetype Unmovable, gfp_mask 0x2420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_THISNODE), pid 1, ts 76806714521, free_ts 15501535317 [ 101.096282][ T22] get_page_from_freelist+0xa72/0x2f80 [ 101.101735][ T22] __alloc_pages+0x1b2/0x500 [ 101.106317][ T22] cache_grow_begin+0x75/0x460 [ 101.111073][ T22] cache_alloc_refill+0x27f/0x380 [ 101.116092][ T22] kmem_cache_alloc+0x454/0x540 [ 101.120933][ T22] getname_flags.part.0+0x50/0x4f0 [ 101.126038][ T22] getname_flags+0x9a/0xe0 [ 101.130447][ T22] user_path_at_empty+0x2b/0x90 [ 101.135294][ T22] vfs_statx+0x142/0x390 [ 101.139529][ T22] __do_sys_newlstat+0x91/0x110 [ 101.144380][ T22] do_syscall_64+0x35/0xb0 [ 101.148788][ T22] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 101.154675][ T22] page last free stack trace: [ 101.159332][ T22] free_pcp_prepare+0x2c5/0x780 [ 101.164175][ T22] free_unref_page+0x19/0x690 [ 101.168841][ T22] free_contig_range+0xa8/0xf0 [ 101.173596][ T22] destroy_args+0xa8/0x646 [ 101.178008][ T22] debug_vm_pgtable+0x295b/0x29ed [ 101.183023][ T22] do_one_initcall+0x103/0x650 [ 101.187778][ T22] kernel_init_freeable+0x6b8/0x741 [ 101.192970][ T22] kernel_init+0x1a/0x1d0 [ 101.197292][ T22] ret_from_fork+0x1f/0x30 [ 101.201701][ T22] [ 101.204015][ T22] Memory state around the buggy address: [ 101.209632][ T22] ffff88806b296400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 101.217680][ T22] ffff88806b296480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 101.225732][ T22] >ffff88806b296500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 101.233789][ T22] ^ [ 101.238884][ T22] ffff88806b296580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 101.246937][ T22] ffff88806b296600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 101.254985][ T22] ================================================================== [ 101.263028][ T22] Disabling lock debugging due to kernel taint [ 101.270266][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 101.276850][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Tainted: G B 5.14.0-syzkaller #0 [ 101.282111][ T3702] Bluetooth: hci0: command 0x041b tx timeout [ 101.285955][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.301956][ T22] Call Trace: [ 101.305233][ T22] dump_stack_lvl+0xcd/0x134 [ 101.309829][ T22] panic+0x2b0/0x6dd [ 101.313727][ T22] ? __warn_printk+0xf3/0xf3 [ 101.318318][ T22] ? preempt_schedule_common+0x59/0xc0 [ 101.323769][ T22] ? __d_alloc+0x19a/0x950 [ 101.328201][ T22] ? preempt_schedule_thunk+0x16/0x18 [ 101.333567][ T22] ? trace_hardirqs_on+0x38/0x1c0 [ 101.338584][ T22] ? trace_hardirqs_on+0x51/0x1c0 [ 101.343600][ T22] ? __d_alloc+0x19a/0x950 [ 101.348003][ T22] ? __d_alloc+0x19a/0x950 [ 101.352405][ T22] end_report.cold+0x63/0x6f [ 101.356985][ T22] kasan_report.cold+0x71/0xdf [ 101.361737][ T22] ? __d_alloc+0x19a/0x950 [ 101.366141][ T22] kasan_check_range+0x13d/0x180 [ 101.371073][ T22] memcpy+0x20/0x60 [ 101.374877][ T22] __d_alloc+0x19a/0x950 [ 101.379112][ T22] d_alloc+0x4a/0x230 [ 101.383079][ T22] __lookup_hash+0xc8/0x180 [ 101.387586][ T22] kern_path_locked+0x17e/0x320 [ 101.392430][ T22] ? filename_lookup+0x80/0x80 [ 101.397185][ T22] handle_remove+0xa2/0x5fe [ 101.401692][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 101.407317][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 101.413291][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 101.419090][ T22] ? find_held_lock+0x2d/0x110 [ 101.423843][ T22] ? devtmpfsd+0xaa/0x2a3 [ 101.428167][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 101.433005][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 101.438019][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 101.442968][ T22] devtmpfsd+0x1b9/0x2a3 [ 101.447204][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 101.452757][ T22] kthread+0x3e5/0x4d0 [ 101.456820][ T22] ? set_kthread_struct+0x130/0x130 [ 101.462014][ T22] ret_from_fork+0x1f/0x30 [ 101.467741][ T22] Kernel Offset: disabled [ 101.472050][ T22] Rebooting in 86400 seconds..