DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3173 [ 29.492623][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.504795][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts. 2022/02/11 18:05:40 fuzzer started 2022/02/11 18:05:41 connecting to host at 10.128.0.169:33617 2022/02/11 18:05:41 checking machine... 2022/02/11 18:05:41 checking revisions... 2022/02/11 18:05:41 testing simple program... syzkaller login: [ 49.842979][ T3594] cgroup: Unknown subsys name 'net' [ 49.948701][ T3594] cgroup: Unknown subsys name 'rlimit' [ 51.149293][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.157995][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.166576][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.175009][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.183908][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.191528][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.285523][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 51.329091][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.337117][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.345873][ T3596] device bridge_slave_0 entered promiscuous mode [ 51.355855][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.363521][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.371268][ T3596] device bridge_slave_1 entered promiscuous mode [ 51.402121][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.414899][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.446979][ T3596] team0: Port device team_slave_0 added [ 51.454663][ T3596] team0: Port device team_slave_1 added [ 51.480645][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.488207][ T3596] 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. [ 51.514462][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.528119][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.535349][ T3596] 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. [ 51.561825][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.595396][ T3596] [ 51.597912][ T3596] ============================= [ 51.602928][ T3596] WARNING: suspicious RCU usage [ 51.607790][ T3596] 5.17.0-rc3-syzkaller-01117-gb96a79253fff #0 Not tainted [ 51.614971][ T3596] ----------------------------- [ 51.619822][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.628075][ T3596] [ 51.628075][ T3596] other info that might help us debug this: [ 51.628075][ T3596] [ 51.638365][ T3596] [ 51.638365][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 51.646486][ T3596] 2 locks held by syz-executor.0/3596: [ 51.651980][ T3596] #0: ffffffff8d32cba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.661412][ T3596] #1: ffff8880755b95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.671576][ T3596] [ 51.671576][ T3596] stack backtrace: [ 51.677596][ T3596] CPU: 0 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01117-gb96a79253fff #0 [ 51.687997][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.698055][ T3596] Call Trace: [ 51.701325][ T3596] [ 51.704245][ T3596] dump_stack_lvl+0xcd/0x134 [ 51.708834][ T3596] hsr_node_get_first+0x9b/0xb0 [ 51.713673][ T3596] hsr_create_self_node+0x22d/0x650 [ 51.718862][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 51.723706][ T3596] hsr_newlink+0x315/0x730 [ 51.728129][ T3596] ? hsr_dellink+0x130/0x130 [ 51.732708][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 51.737735][ T3596] ? hsr_dellink+0x130/0x130 [ 51.742316][ T3596] __rtnl_newlink+0x107c/0x1760 [ 51.747167][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 51.751841][ T3596] ? is_bpf_text_address+0x77/0x170 [ 51.757033][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.762186][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 51.767582][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.773676][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.779399][ T3596] ? is_bpf_text_address+0x99/0x170 [ 51.784590][ T3596] ? kernel_text_address+0x39/0x80 [ 51.789686][ T3596] ? __kernel_text_address+0x9/0x30 [ 51.794874][ T3596] ? unwind_get_return_address+0x51/0x90 [ 51.800494][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 51.805685][ T3596] ? arch_stack_walk+0x93/0xe0 [ 51.810486][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.816031][ T3596] rtnl_newlink+0x64/0xa0 [ 51.820349][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 51.825359][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 51.830301][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 51.834799][ T3596] netlink_rcv_skb+0x153/0x420 [ 51.839566][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 51.844072][ T3596] ? netlink_ack+0xa60/0xa60 [ 51.848647][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 51.853929][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.859202][ T3596] netlink_unicast+0x539/0x7e0 [ 51.863966][ T3596] ? netlink_attachskb+0x880/0x880 [ 51.869084][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.875318][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.881553][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 51.886570][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.892278][ T3596] ? __check_object_size+0x16e/0x310 [ 51.897554][ T3596] netlink_sendmsg+0x904/0xe00 [ 51.902313][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 51.907243][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.913694][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 51.918673][ T3596] sock_sendmsg+0xcf/0x120 [ 51.923104][ T3596] __sys_sendto+0x21c/0x320 [ 51.927610][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.933121][ T3596] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 51.939119][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 51.944576][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.949422][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.954269][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 51.959020][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 51.964227][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.970119][ T3596] do_syscall_64+0x35/0xb0 [ 51.974526][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.980416][ T3596] RIP: 0033:0x7f22a494de1c [ 51.984819][ T3596] 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 [ 52.004588][ T3596] RSP: 002b:00007ffe56e0b440 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.012993][ T3596] RAX: ffffffffffffffda RBX: 00007f22a59e6320 RCX: 00007f22a494de1c [ 52.020992][ T3596] RDX: 0000000000000048 RSI: 00007f22a59e6370 RDI: 0000000000000003 [ 52.028950][ T3596] RBP: 0000000000000000 R08: 00007ffe56e0b494 R09: 000000000000000c [ 52.036906][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.045130][ T3596] R13: 00007f22a59e6370 R14: 0000000000000003 R15: 0000000000000000 [ 52.053113][ T3596] [ 52.059950][ T3596] device hsr_slave_0 entered promiscuous mode [ 52.067027][ T3596] device hsr_slave_1 entered promiscuous mode [ 52.147758][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.159069][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.167885][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.177500][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.199136][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.206489][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.214663][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.221804][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.268822][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.280722][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.293173][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.301579][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.312626][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.328175][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.337842][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.347172][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.356955][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.364437][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.381888][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.390591][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.399613][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.406717][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.414703][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.423664][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.432545][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.443377][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.454711][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.463032][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.471699][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.486015][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.494936][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.508643][ T3596] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.520594][ T3596] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.532046][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.540657][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.561438][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.569867][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.577635][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 52.715929][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.724916][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.738699][ T3596] device veth0_vlan entered promiscuous mode [ 52.745676][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.754414][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.764779][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.772789][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.784922][ T3596] device veth1_vlan entered promiscuous mode [ 52.802810][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.811301][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.820395][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.829129][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.840404][ T3596] device veth0_macvtap entered promiscuous mode [ 52.850990][ T3596] device veth1_macvtap entered promiscuous mode [ 52.866445][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.875501][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.884027][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.892210][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.902173][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.913883][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.921266][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.931533][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.942386][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.951248][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.960861][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.970696][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.033236][ T1334] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.041330][ T1334] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.055750][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.070977][ T1334] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.079838][ T1334] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.089025][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/11 18:05:44 building call list... [ 53.222882][ T3610] Bluetooth: hci0: command 0x0409 tx timeout [ 53.350830][ T967] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.294064][ T3585] can: request_module (can-proto-0) failed. [ 55.316007][ T3585] can: request_module (can-proto-0) failed. [ 55.337015][ T3585] can: request_module (can-proto-0) failed. executing program [ 55.942447][ T967] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0