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 [ 29.155244][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.167188][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts. 2022/02/10 20:21:27 fuzzer started 2022/02/10 20:21:27 connecting to host at 10.128.0.169:43203 2022/02/10 20:21:27 checking machine... 2022/02/10 20:21:27 checking revisions... 2022/02/10 20:21:27 testing simple program... syzkaller login: [ 45.348188][ T3595] cgroup: Unknown subsys name 'net' [ 45.476877][ T3595] cgroup: Unknown subsys name 'rlimit' [ 46.685999][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 46.694459][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 46.702306][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 46.710508][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 46.718080][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 46.725629][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 46.815833][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 46.857931][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.865616][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.873683][ T3597] device bridge_slave_0 entered promiscuous mode [ 46.883193][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.890383][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.898072][ T3597] device bridge_slave_1 entered promiscuous mode [ 46.919661][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 46.931278][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 46.953850][ T3597] team0: Port device team_slave_0 added [ 46.961681][ T3597] team0: Port device team_slave_1 added [ 46.979134][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 46.986164][ 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. [ 47.012268][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 47.024890][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 47.032055][ 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. [ 47.058067][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 47.082606][ T3597] [ 47.085066][ T3597] ============================= [ 47.089949][ T3597] WARNING: suspicious RCU usage [ 47.094789][ T3597] 5.17.0-rc2-syzkaller-00941-gd8c2858181cc #0 Not tainted [ 47.101980][ T3597] ----------------------------- [ 47.106822][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 47.115002][ T3597] [ 47.115002][ T3597] other info that might help us debug this: [ 47.115002][ T3597] [ 47.125258][ T3597] [ 47.125258][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 47.133349][ T3597] 2 locks held by syz-executor.0/3597: [ 47.138805][ T3597] #0: ffffffff8d32c7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 47.148285][ T3597] #1: ffff88801955d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 47.158448][ T3597] [ 47.158448][ T3597] stack backtrace: [ 47.164378][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00941-gd8c2858181cc #0 [ 47.174798][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.184857][ T3597] Call Trace: [ 47.188121][ T3597] [ 47.191038][ T3597] dump_stack_lvl+0xcd/0x134 [ 47.196066][ T3597] hsr_node_get_first+0x9b/0xb0 [ 47.200920][ T3597] hsr_create_self_node+0x22d/0x650 [ 47.206129][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 47.210977][ T3597] hsr_newlink+0x315/0x730 [ 47.215383][ T3597] ? hsr_dellink+0x130/0x130 [ 47.219978][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 47.224989][ T3597] ? hsr_dellink+0x130/0x130 [ 47.229564][ T3597] __rtnl_newlink+0x107c/0x1760 [ 47.234408][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 47.239074][ T3597] ? is_bpf_text_address+0x77/0x170 [ 47.244263][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 47.249117][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 47.254338][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.260443][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 47.266162][ T3597] ? is_bpf_text_address+0x99/0x170 [ 47.271355][ T3597] ? kernel_text_address+0x39/0x80 [ 47.276467][ T3597] ? __kernel_text_address+0x9/0x30 [ 47.281653][ T3597] ? unwind_get_return_address+0x51/0x90 [ 47.287268][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 47.292454][ T3597] ? arch_stack_walk+0x93/0xe0 [ 47.297243][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 47.302700][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 47.308235][ T3597] rtnl_newlink+0x64/0xa0 [ 47.312552][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 47.317561][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 47.322922][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 47.327420][ T3597] netlink_rcv_skb+0x153/0x420 [ 47.332170][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 47.336658][ T3597] ? netlink_ack+0xa60/0xa60 [ 47.341243][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 47.346527][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 47.351804][ T3597] netlink_unicast+0x539/0x7e0 [ 47.356560][ T3597] ? netlink_attachskb+0x880/0x880 [ 47.361668][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 47.368000][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 47.374243][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 47.379335][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 47.385066][ T3597] ? __check_object_size+0x16e/0x310 [ 47.390420][ T3597] netlink_sendmsg+0x904/0xe00 [ 47.395223][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 47.400164][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 47.406397][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 47.411321][ T3597] sock_sendmsg+0xcf/0x120 [ 47.415726][ T3597] __sys_sendto+0x21c/0x320 [ 47.420214][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 47.425583][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 47.431575][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 47.437065][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 47.441901][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 47.446745][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 47.451494][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 47.456679][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 47.462599][ T3597] do_syscall_64+0x35/0xb0 [ 47.467012][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.472892][ T3597] RIP: 0033:0x7f88c3eede1c [ 47.477304][ 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 [ 47.496893][ T3597] RSP: 002b:00007fff15c359d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 47.505300][ T3597] RAX: ffffffffffffffda RBX: 00007f88c4f86320 RCX: 00007f88c3eede1c [ 47.513352][ T3597] RDX: 0000000000000048 RSI: 00007f88c4f86370 RDI: 0000000000000003 [ 47.521310][ T3597] RBP: 0000000000000000 R08: 00007fff15c35a24 R09: 000000000000000c [ 47.529283][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 47.537240][ T3597] R13: 00007f88c4f86370 R14: 0000000000000003 R15: 0000000000000000 [ 47.545208][ T3597] [ 47.552110][ T3597] device hsr_slave_0 entered promiscuous mode [ 47.562292][ T3597] device hsr_slave_1 entered promiscuous mode [ 47.654149][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 47.664950][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 47.674740][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 47.683742][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.705062][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.712249][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.720252][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.727343][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.774792][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.788187][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.799869][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.808286][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.817630][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.831480][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.841412][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.851839][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.860434][ T3260] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.867479][ T3260] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.890960][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 47.899995][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.908357][ T3260] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.915485][ T3260] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.923055][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.931882][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.940460][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 47.949841][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.958255][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 47.966915][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.980734][ T3597] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 47.991362][ T3597] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 48.004271][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 48.012751][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 48.021000][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 48.029822][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 48.038120][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 48.046594][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 48.067534][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 48.074817][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 48.082533][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 48.209307][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 48.217998][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 48.227260][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 48.235887][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 48.245916][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 48.253847][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 48.263729][ T3597] device veth0_vlan entered promiscuous mode [ 48.274847][ T3597] device veth1_vlan entered promiscuous mode [ 48.293223][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 48.301618][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 48.309761][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 48.318358][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 48.329659][ T3597] device veth0_macvtap entered promiscuous mode [ 48.339843][ T3597] device veth1_macvtap entered promiscuous mode [ 48.354830][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 48.363873][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 48.372096][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 48.380242][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 48.388726][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 48.401834][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 48.410115][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 48.418615][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 48.430061][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.438860][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.448317][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.457540][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.517158][ T44] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.533826][ T44] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 48.545351][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.546170][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 48.554125][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 48.570924][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/10 20:21:31 building call list... [ 48.823398][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.879878][ T3587] can: request_module (can-proto-0) failed. [ 50.902134][ T3587] can: request_module (can-proto-0) failed. [ 50.924220][ T3587] can: request_module (can-proto-0) failed. executing program [ 51.379493][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0