DUID 00:04:00:dd:10:da:7f:85:b5:90:fb:fd:97:ac:66:d6:08:36 forked to background, child pid 3174 [ 28.405473][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.416332][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts. 2022/02/18 06:08:49 fuzzer started 2022/02/18 06:08:49 connecting to host at 10.128.0.169:45155 2022/02/18 06:08:49 checking machine... 2022/02/18 06:08:49 checking revisions... 2022/02/18 06:08:49 testing simple program... syzkaller login: [ 50.195201][ T3595] cgroup: Unknown subsys name 'net' [ 50.339525][ T3595] cgroup: Unknown subsys name 'rlimit' [ 51.557247][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.565342][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.572756][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.581375][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.589145][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.596608][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.683244][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 51.726340][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.733995][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.741895][ T3597] device bridge_slave_0 entered promiscuous mode [ 51.751165][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.758471][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.766652][ T3597] device bridge_slave_1 entered promiscuous mode [ 51.786689][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.797618][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.821203][ T3597] team0: Port device team_slave_0 added [ 51.828409][ T3597] team0: Port device team_slave_1 added [ 51.845929][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.852997][ T3597] 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. [ 51.879421][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.892193][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.899252][ T3597] 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. [ 51.925258][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.949418][ T3597] [ 51.951850][ T3597] ============================= [ 51.956733][ T3597] WARNING: suspicious RCU usage [ 51.961569][ T3597] 5.17.0-rc4-syzkaller-01323-ga3fc4b1d09d9 #0 Not tainted [ 51.968751][ T3597] ----------------------------- [ 51.973634][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.981779][ T3597] [ 51.981779][ T3597] other info that might help us debug this: [ 51.981779][ T3597] [ 51.992064][ T3597] [ 51.992064][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 52.000155][ T3597] 2 locks held by syz-executor.0/3597: [ 52.005661][ T3597] #0: ffffffff8d32f828 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.015147][ T3597] #1: ffff88807f26d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.025333][ T3597] [ 52.025333][ T3597] stack backtrace: [ 52.031216][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01323-ga3fc4b1d09d9 #0 [ 52.041619][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.051664][ T3597] Call Trace: [ 52.054933][ T3597] [ 52.057848][ T3597] dump_stack_lvl+0xcd/0x134 [ 52.062426][ T3597] hsr_node_get_first+0x9b/0xb0 [ 52.067259][ T3597] hsr_create_self_node+0x22d/0x650 [ 52.072442][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 52.077289][ T3597] hsr_newlink+0x315/0x730 [ 52.081686][ T3597] ? hsr_dellink+0x130/0x130 [ 52.086258][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 52.091265][ T3597] ? hsr_dellink+0x130/0x130 [ 52.095836][ T3597] __rtnl_newlink+0x107c/0x1760 [ 52.100695][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 52.105370][ T3597] ? is_bpf_text_address+0x77/0x170 [ 52.110562][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.115424][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 52.120650][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.126988][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.132938][ T3597] ? is_bpf_text_address+0x99/0x170 [ 52.138137][ T3597] ? kernel_text_address+0x39/0x80 [ 52.143343][ T3597] ? __kernel_text_address+0x9/0x30 [ 52.148645][ T3597] ? unwind_get_return_address+0x51/0x90 [ 52.154389][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 52.159596][ T3597] ? arch_stack_walk+0x93/0xe0 [ 52.164388][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 52.169936][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.175479][ T3597] rtnl_newlink+0x64/0xa0 [ 52.179897][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 52.184909][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 52.189835][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 52.194593][ T3597] netlink_rcv_skb+0x153/0x420 [ 52.199341][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 52.204100][ T3597] ? netlink_ack+0xa60/0xa60 [ 52.208670][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.213944][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.219218][ T3597] netlink_unicast+0x539/0x7e0 [ 52.223972][ T3597] ? netlink_attachskb+0x880/0x880 [ 52.229063][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.235294][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.241519][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 52.246527][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.252228][ T3597] ? __check_object_size+0x16e/0x310 [ 52.257500][ T3597] netlink_sendmsg+0x904/0xe00 [ 52.262338][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.267282][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.273608][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.278547][ T3597] sock_sendmsg+0xcf/0x120 [ 52.282956][ T3597] __sys_sendto+0x21c/0x320 [ 52.287531][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.292972][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 52.298172][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 52.303625][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.308489][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 52.313239][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 52.318425][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.324327][ T3597] do_syscall_64+0x35/0xb0 [ 52.329001][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.334880][ T3597] RIP: 0033:0x7fa9356f3e1c [ 52.339278][ T3597] Code: fa fa ff ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 20 fb ff ff 48 8b [ 52.358866][ T3597] RSP: 002b:00007ffe6dc40a70 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.367264][ T3597] RAX: ffffffffffffffda RBX: 00007fa93678c320 RCX: 00007fa9356f3e1c [ 52.375229][ T3597] RDX: 0000000000000048 RSI: 00007fa93678c370 RDI: 0000000000000003 [ 52.383276][ T3597] RBP: 0000000000000000 R08: 00007ffe6dc40ac4 R09: 000000000000000c [ 52.391423][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.399381][ T3597] R13: 00007fa93678c370 R14: 0000000000000003 R15: 0000000000000000 [ 52.407348][ T3597] [ 52.415001][ T3597] device hsr_slave_0 entered promiscuous mode [ 52.422094][ T3597] device hsr_slave_1 entered promiscuous mode [ 52.500190][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.510667][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.519510][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.529990][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.549324][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.556732][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.564744][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.571867][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.616311][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.628811][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.640824][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.649582][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.658389][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.670844][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.682492][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.691361][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.698487][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.723831][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.732547][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.742017][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.749191][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.757478][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.766311][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.775520][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.784519][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.793235][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.801900][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.810412][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.818731][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.827194][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.835451][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.845608][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.855199][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.873505][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.881130][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.891723][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 53.004481][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.015180][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.027100][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.036911][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.047645][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.055712][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.064194][ T3597] device veth0_vlan entered promiscuous mode [ 53.075984][ T3597] device veth1_vlan entered promiscuous mode [ 53.093395][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.101569][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.109786][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.118772][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.130488][ T3597] device veth0_macvtap entered promiscuous mode [ 53.140541][ T3597] device veth1_macvtap entered promiscuous mode [ 53.156004][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.164190][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.172154][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.180384][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.189022][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.200383][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.207791][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.218029][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.228539][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.237692][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.247358][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.257046][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.318648][ T90] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.336912][ T90] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.347015][ T1078] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.347649][ T1143] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.358635][ T1078] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.373716][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/18 06:08:52 building call list... [ 53.645302][ T1078] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.781445][ T3590] can: request_module (can-proto-0) failed. [ 55.806577][ T3590] can: request_module (can-proto-0) failed. [ 55.827260][ T3590] can: request_module (can-proto-0) failed. executing program [ 56.234293][ T1078] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0