DUID 00:04:08:6f:95:b8:7a:da:47:d5:ae:28:d8:4d:e4:58:2e:6d forked to background, child pid 3171 [ 22.651768][ T3172] 8021q: adding VLAN 0 to HW filter on device bond0 [ 22.663157][ T3172] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.72' (ECDSA) to the list of known hosts. 2022/04/25 06:50:33 fuzzer started 2022/04/25 06:50:34 connecting to host at 10.128.0.169:40817 2022/04/25 06:50:34 checking machine... 2022/04/25 06:50:34 checking revisions... 2022/04/25 06:50:34 testing simple program... syzkaller login: [ 37.083954][ T3589] cgroup: Unknown subsys name 'net' [ 37.189846][ T3589] cgroup: Unknown subsys name 'rlimit' [ 38.378483][ T3595] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 38.385642][ T3595] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 38.392924][ T3597] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 38.400421][ T3597] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 38.407725][ T3597] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 38.414742][ T3597] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 38.469632][ T3594] chnl_net:caif_netlink_parms(): no params data found [ 38.499788][ T3594] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.507367][ T3594] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.514867][ T3594] device bridge_slave_0 entered promiscuous mode [ 38.522714][ T3594] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.530015][ T3594] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.537968][ T3594] device bridge_slave_1 entered promiscuous mode [ 38.555883][ T3594] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 38.567207][ T3594] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 38.584644][ T3594] team0: Port device team_slave_0 added [ 38.591625][ T3594] team0: Port device team_slave_1 added [ 38.606271][ T3594] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 38.613320][ T3594] 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. [ 38.639928][ T3594] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 38.651543][ T3594] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 38.658537][ T3594] 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. [ 38.684723][ T3594] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 38.705889][ T3594] device hsr_slave_0 entered promiscuous mode [ 38.712802][ T3594] device hsr_slave_1 entered promiscuous mode [ 38.764179][ T3594] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 38.772847][ T3594] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 38.781503][ T3594] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 38.789860][ T3594] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 38.805738][ T3594] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.812842][ T3594] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.820155][ T3594] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.827467][ T3594] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.858757][ T3594] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.869731][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 38.878089][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.886141][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.893805][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 38.904264][ T3594] 8021q: adding VLAN 0 to HW filter on device team0 [ 38.913841][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 38.922451][ T141] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.929737][ T141] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.947576][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 38.956877][ T141] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.963953][ T141] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.972062][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 38.980685][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 38.990403][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 39.000442][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 39.010927][ T3594] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 39.022345][ T3594] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 39.031454][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 39.048511][ T3594] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 39.057026][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 39.064459][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 39.142349][ T3594] device veth0_vlan entered promiscuous mode [ 39.149181][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 39.158117][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 39.166939][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 39.174710][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 39.187864][ T3594] device veth1_vlan entered promiscuous mode [ 39.202324][ T3594] device veth0_macvtap entered promiscuous mode [ 39.210102][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 39.218422][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 39.226635][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 39.235029][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 39.245898][ T3594] device veth1_macvtap entered promiscuous mode [ 39.259383][ T3594] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 39.267569][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 39.279407][ T3594] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 39.287694][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 39.298216][ T3594] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.307823][ T3594] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.316723][ T3594] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.325773][ T3594] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.359349][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 39.368036][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 39.378144][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 39.391304][ T46] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 39.399422][ T46] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 39.407342][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/04/25 06:50:36 building call list... [ 39.570286][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 109.586140][ T141] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 2688 jiffies s: 669 root: 0x1/. [ 109.601884][ T141] rcu: blocking rcu_node structures (internal RCU debug): [ 109.616938][ T141] Task dump for CPU 0: [ 109.625170][ T141] task:syz-fuzzer state:R running task stack:29080 pid: 3617 ppid: 3579 flags:0x0000000c [ 109.647469][ T141] Call Trace: [ 109.650769][ T141] [ 109.653744][ T141] ? __alloc_pages+0x1b2/0x500 [ 109.670274][ T141] ? rcu_read_lock_sched_held+0xd/0x70 [ 109.675860][ T141] ? __alloc_pages_slowpath.constprop.0+0x20a0/0x20a0 [ 109.696151][ T141] ? folio_add_lru+0x353/0x6a0 [ 109.700948][ T141] ? rcu_read_unlock+0x9/0x60 [ 109.715925][ T141] ? lock_downgrade+0x6e0/0x6e0 [ 109.721121][ T141] ? alloc_pages_vma+0xf9/0x770 [ 109.736902][ T141] ? __handle_mm_fault+0x1a24/0x33d0 [ 109.742214][ T141] ? vm_iomap_memory+0x190/0x190 [ 109.758018][ T141] ? lock_release+0x780/0x780 [ 109.762719][ T141] ? handle_mm_fault+0x1c8/0x790 [ 109.778393][ T141] ? do_user_addr_fault+0x489/0x11c0 [ 109.783785][ T141] ? exc_page_fault+0x9e/0x180 [ 109.799378][ T141] ? asm_exc_page_fault+0x8/0x30 [ 109.804344][ T141] ? asm_exc_page_fault+0x1e/0x30 [ 109.820519][ T141]