Warning: Permanently added '10.128.1.52' (ECDSA) to the list of known hosts. 2021/03/29 20:04:54 fuzzer started 2021/03/29 20:04:54 connecting to host at 10.128.0.163:44653 2021/03/29 20:04:54 checking machine... 2021/03/29 20:04:54 checking revisions... 2021/03/29 20:04:54 testing simple program... [ 30.496479][ T0] ================================================================== [ 30.505227][ T0] BUG: KCSAN: data-race in tick_nohz_stop_tick / tick_nohz_stop_tick [ 30.513874][ T0] [ 30.516285][ T0] write to 0xffffffff87bb65e0 of 4 bytes by task 0 on cpu 0: [ 30.524191][ T0] tick_nohz_stop_tick+0x99/0x420 [ 30.529206][ T0] tick_nohz_idle_stop_tick+0x15d/0x310 [ 30.534829][ T0] do_idle+0x176/0x230 [ 30.539235][ T0] cpu_startup_entry+0x15/0x20 [ 30.544647][ T0] rest_init+0xd7/0xe0 [ 30.549014][ T0] arch_call_rest_init+0xa/0xb [ 30.553860][ T0] start_kernel+0x5a1/0x626 [ 30.558930][ T0] secondary_startup_64_no_verify+0xb0/0xbb [ 30.564820][ T0] [ 30.567224][ T0] read to 0xffffffff87bb65e0 of 4 bytes by task 0 on cpu 1: [ 30.575015][ T0] tick_nohz_stop_tick+0x73/0x420 [ 30.580025][ T0] tick_nohz_idle_stop_tick+0x15d/0x310 [ 30.585677][ T0] do_idle+0x176/0x230 [ 30.589917][ T0] cpu_startup_entry+0x15/0x20 [ 30.594836][ T0] secondary_startup_64_no_verify+0xb0/0xbb [ 30.600923][ T0] [ 30.603333][ T0] Reported by Kernel Concurrency Sanitizer on: [ 30.609483][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.12.0-rc5-syzkaller #0 [ 30.617534][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.627775][ T0] ================================================================== [ 31.361125][ T8361] IPVS: ftp: loaded support on port[0] = 21 [ 31.413352][ T8361] chnl_net:caif_netlink_parms(): no params data found [ 31.447484][ T8361] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.454872][ T8361] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.462762][ T8361] device bridge_slave_0 entered promiscuous mode [ 31.470746][ T8361] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.478203][ T8361] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.485644][ T8361] device bridge_slave_1 entered promiscuous mode [ 31.499588][ T8361] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 31.510154][ T8361] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 31.526366][ T8361] team0: Port device team_slave_0 added [ 31.533473][ T8361] team0: Port device team_slave_1 added [ 31.546032][ T8361] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 31.553865][ T8361] 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. [ 31.581412][ T8361] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 31.594374][ T8361] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 31.602600][ T8361] 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. [ 31.629563][ T8361] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 31.649743][ T8361] device hsr_slave_0 entered promiscuous mode [ 31.656483][ T8361] device hsr_slave_1 entered promiscuous mode [ 31.703115][ T8361] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 31.712046][ T8361] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 31.721212][ T8361] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 31.730589][ T8361] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 31.745519][ T8361] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.753231][ T8361] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.760952][ T8361] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.768452][ T8361] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.797648][ T8361] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.809374][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.817892][ T2014] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.826358][ T2014] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.834763][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 31.845755][ T8361] 8021q: adding VLAN 0 to HW filter on device team0 [ 31.856602][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.865513][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.873548][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.896772][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.905510][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.913050][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.922036][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 31.930658][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 31.939533][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.948362][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 31.958496][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.968896][ T8361] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 31.983243][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 31.990958][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 32.002583][ T8361] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 32.018458][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 32.036359][ T4832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 32.045122][ T4832] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 32.053183][ T4832] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 32.062368][ T8361] device veth0_vlan entered promiscuous mode [ 32.072766][ T8361] device veth1_vlan entered promiscuous mode [ 32.090611][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 32.099260][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 32.107682][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 32.117892][ T8361] device veth0_macvtap entered promiscuous mode [ 32.128316][ T8361] device veth1_macvtap entered promiscuous mode [ 32.142836][ T8361] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 32.151003][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.160546][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 32.171174][ T8361] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 32.180519][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 32.191274][ T8361] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.200942][ T8361] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.210217][ T8361] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.219434][ T8361] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.260828][ T107] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 32.273313][ T107] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 32.281708][ T2014] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 32.293682][ T8] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 32.302528][ T8] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 32.311674][ T4832] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/03/29 20:04:57 building call list... [ 32.510942][ T551] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 34.584607][ T8348] can: request_module (can-proto-0) failed. [ 35.567919][ T551] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 37.726410][ T551] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 37.787492][ T551] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.817935][ T551] device hsr_slave_0 left promiscuous mode [ 38.824511][ T551] device hsr_slave_1 left promiscuous mode [ 38.831494][ T551] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 38.839520][ T551] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 38.848067][ T551] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 38.855926][ T551] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 38.863546][ T551] device bridge_slave_1 left promiscuous mode [ 38.870620][ T551] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.879822][ T551] device bridge_slave_0 left promiscuous mode [ 38.886552][ T551] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.896644][ T551] device veth1_macvtap left promiscuous mode [ 38.903127][ T551] device veth0_macvtap left promiscuous mode [ 38.909525][ T551] device veth1_vlan left promiscuous mode [ 38.915790][ T551] device veth0_vlan left promiscuous mode executing program [ 39.520690][ T551] team0 (unregistering): Port device team_slave_1 removed [ 39.529873][ T551] team0 (unregistering): Port device team_slave_0 removed [ 39.539104][ T551] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 39.550425][ T551] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 39.571552][ T551] bond0 (unregistering): Released all slaves [ 40.109965][ T8348] can: request_module (can-proto-0) failed. [ 40.119812][ T8348] can: request_module (can-proto-0) failed.