Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Regular background program processing daemon. Starting OpenBSD Secure Shell server... [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.205' (ECDSA) to the list of known hosts. 2020/08/07 12:37:10 parsed 1 programs 2020/08/07 12:37:10 executed programs: 0 syzkaller login: [ 60.525115][ T28] audit: type=1400 audit(1596803830.414:8): avc: denied { execmem } for pid=6857 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 60.573527][ T6858] IPVS: ftp: loaded support on port[0] = 21 [ 60.683699][ T6858] chnl_net:caif_netlink_parms(): no params data found [ 60.734531][ T6858] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.742608][ T6858] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.751719][ T6858] device bridge_slave_0 entered promiscuous mode [ 60.761900][ T6858] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.768962][ T6858] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.777446][ T6858] device bridge_slave_1 entered promiscuous mode [ 60.797073][ T6858] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.807773][ T6858] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.832112][ T6858] team0: Port device team_slave_0 added [ 60.839889][ T6858] team0: Port device team_slave_1 added [ 60.856730][ T6858] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.863680][ T6858] 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. [ 60.890953][ T6858] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.904095][ T6858] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.911981][ T6858] 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. [ 60.938434][ T6858] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.964600][ T6858] device hsr_slave_0 entered promiscuous mode [ 60.971235][ T6858] device hsr_slave_1 entered promiscuous mode [ 61.064581][ T6858] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.074009][ T6858] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.089928][ T6858] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.098544][ T6858] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.129480][ T6858] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.136722][ T6858] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.144422][ T6858] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.151528][ T6858] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.195277][ T6858] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.207909][ T7066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.218019][ T7066] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.226408][ T7066] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.234748][ T7066] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 61.246640][ T6858] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.258020][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.267156][ T2587] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.274272][ T2587] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.289490][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.297974][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.305166][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.327696][ T6858] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.338923][ T6858] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.352063][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.361493][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.370472][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.378811][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.388498][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.396767][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.416745][ T6858] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.425981][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.434627][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.461031][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.471003][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.479879][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.487613][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.497312][ T6858] device veth0_vlan entered promiscuous mode [ 61.510172][ T6858] device veth1_vlan entered promiscuous mode [ 61.531150][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.540034][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.548028][ T2587] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.559738][ T6858] device veth0_macvtap entered promiscuous mode [ 61.568772][ T6858] device veth1_macvtap entered promiscuous mode [ 61.585645][ T6858] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.593365][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.603170][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 61.614550][ T6858] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.623256][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 61.634468][ T6858] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.643749][ T6858] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.653106][ T6858] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.662101][ T6858] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.634828][ T6858] ================================================================== [ 63.642932][ T6858] BUG: KASAN: use-after-free in __lock_acquire+0x41d0/0x5640 [ 63.650292][ T6858] Read of size 8 at addr ffff8880936320a0 by task syz-executor.0/6858 [ 63.658422][ T6858] [ 63.660748][ T6858] CPU: 1 PID: 6858 Comm: syz-executor.0 Not tainted 5.8.0-syzkaller #0 [ 63.668970][ T6858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.679016][ T6858] Call Trace: [ 63.682300][ T6858] dump_sta