DUID 00:04:44:5a:cc:c9:49:7a:03:7b:0e:36:9f:1a:c7:8d:92:7d forked to background, child pid 3173 [ 28.868177][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.878308][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.146' (ECDSA) to the list of known hosts. 2022/02/15 14:46:24 fuzzer started 2022/02/15 14:46:24 connecting to host at 10.128.0.169:46431 2022/02/15 14:46:24 checking machine... 2022/02/15 14:46:24 checking revisions... 2022/02/15 14:46:24 testing simple program... syzkaller login: [ 50.221739][ T3601] cgroup: Unknown subsys name 'net' [ 50.338465][ T3601] cgroup: Unknown subsys name 'rlimit' [ 51.552602][ T3604] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.560445][ T3604] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.568014][ T3604] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.576079][ T3604] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.583852][ T3604] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.591065][ T3604] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.676793][ T3603] chnl_net:caif_netlink_parms(): no params data found [ 51.718429][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.725928][ T3603] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.733895][ T3603] device bridge_slave_0 entered promiscuous mode [ 51.743157][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.750258][ T3603] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.758271][ T3603] device bridge_slave_1 entered promiscuous mode [ 51.778760][ T3603] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.789636][ T3603] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.811807][ T3603] team0: Port device team_slave_0 added [ 51.819025][ T3603] team0: Port device team_slave_1 added [ 51.836683][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.843802][ T3603] 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. [ 51.869727][ T3603] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.882778][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.889725][ T3603] 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. [ 51.915842][ T3603] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.939173][ T3603] [ 51.941642][ T3603] ============================= [ 51.946487][ T3603] WARNING: suspicious RCU usage [ 51.951374][ T3603] 5.17.0-rc3-syzkaller-01176-g25ce79db8042 #0 Not tainted [ 51.958494][ T3603] ----------------------------- [ 51.963436][ T3603] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.971717][ T3603] [ 51.971717][ T3603] other info that might help us debug this: [ 51.971717][ T3603] [ 51.981998][ T3603] [ 51.981998][ T3603] rcu_scheduler_active = 2, debug_locks = 1 [ 51.990063][ T3603] 2 locks held by syz-executor.0/3603: [ 51.995561][ T3603] #0: ffffffff8d32cb28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.005033][ T3603] #1: ffff8880773055f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.015199][ T3603] [ 52.015199][ T3603] stack backtrace: [ 52.021094][ T3603] CPU: 0 PID: 3603 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01176-g25ce79db8042 #0 [ 52.031518][ T3603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.041588][ T3603] Call Trace: [ 52.044865][ T3603] [ 52.047799][ T3603] dump_stack_lvl+0xcd/0x134 [ 52.052386][ T3603] hsr_node_get_first+0x9b/0xb0 [ 52.057252][ T3603] hsr_create_self_node+0x22d/0x650 [ 52.062450][ T3603] hsr_dev_finalize+0x2c1/0x7d0 [ 52.067299][ T3603] hsr_newlink+0x315/0x730 [ 52.071707][ T3603] ? hsr_dellink+0x130/0x130 [ 52.076285][ T3603] ? rtnl_create_link+0x7e8/0xc00 [ 52.081317][ T3603] ? hsr_dellink+0x130/0x130 [ 52.085889][ T3603] __rtnl_newlink+0x107c/0x1760 [ 52.090732][ T3603] ? rtnl_setlink+0x3c0/0x3c0 [ 52.095400][ T3603] ? is_bpf_text_address+0x77/0x170 [ 52.100585][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 52.105428][ T3603] ? unwind_next_frame+0xee1/0x1ce0 [ 52.110612][ T3603] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.116664][ T3603] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.122381][ T3603] ? is_bpf_text_address+0x99/0x170 [ 52.127582][ T3603] ? kernel_text_address+0x39/0x80 [ 52.132695][ T3603] ? __kernel_text_address+0x9/0x30 [ 52.137890][ T3603] ? unwind_get_return_address+0x51/0x90 [ 52.143523][ T3603] ? create_prof_cpu_mask+0x20/0x20 [ 52.148718][ T3603] ? arch_stack_walk+0x93/0xe0 [ 52.153504][ T3603] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.158974][ T3603] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.164541][ T3603] rtnl_newlink+0x64/0xa0 [ 52.168863][ T3603] ? __rtnl_newlink+0x1760/0x1760 [ 52.173875][ T3603] rtnetlink_rcv_msg+0x413/0xb80 [ 52.178800][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 52.183297][ T3603] netlink_rcv_skb+0x153/0x420 [ 52.188061][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 52.192554][ T3603] ? netlink_ack+0xa60/0xa60 [ 52.197126][ T3603] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.202402][ T3603] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.207678][ T3603] netlink_unicast+0x539/0x7e0 [ 52.212430][ T3603] ? netlink_attachskb+0x880/0x880 [ 52.217535][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.223763][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.229991][ T3603] ? __phys_addr_symbol+0x2c/0x70 [ 52.235001][ T3603] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.240708][ T3603] ? __check_object_size+0x16e/0x310 [ 52.245980][ T3603] netlink_sendmsg+0x904/0xe00 [ 52.250732][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 52.255661][ T3603] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.261889][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 52.266826][ T3603] sock_sendmsg+0xcf/0x120 [ 52.271239][ T3603] __sys_sendto+0x21c/0x320 [ 52.275745][ T3603] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.281117][ T3603] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.287095][ T3603] ? __context_tracking_exit+0xb8/0xe0 [ 52.292544][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 52.297470][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 52.302318][ T3603] __x64_sys_sendto+0xdd/0x1b0 [ 52.307081][ T3603] ? lockdep_hardirqs_on+0x79/0x100 [ 52.312270][ T3603] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.318164][ T3603] do_syscall_64+0x35/0xb0 [ 52.322572][ T3603] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.328452][ T3603] RIP: 0033:0x7fc0681fde1c [ 52.332853][ T3603] 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 [ 52.352444][ T3603] RSP: 002b:00007ffc1bf2ff60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.360853][ T3603] RAX: ffffffffffffffda RBX: 00007fc069296320 RCX: 00007fc0681fde1c [ 52.368819][ T3603] RDX: 0000000000000048 RSI: 00007fc069296370 RDI: 0000000000000003 [ 52.376773][ T3603] RBP: 0000000000000000 R08: 00007ffc1bf2ffb4 R09: 000000000000000c [ 52.384725][ T3603] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.392680][ T3603] R13: 00007fc069296370 R14: 0000000000000003 R15: 0000000000000000 [ 52.400643][ T3603] [ 52.408228][ T3603] device hsr_slave_0 entered promiscuous mode [ 52.416308][ T3603] device hsr_slave_1 entered promiscuous mode [ 52.494502][ T3603] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.504092][ T3603] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.514923][ T3603] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.523462][ T3603] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.543420][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.550560][ T3603] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.558373][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.565453][ T3603] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.606669][ T3603] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.618712][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.628457][ T917] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.639306][ T917] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.647265][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.660894][ T3603] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.673347][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.681855][ T3613] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.688920][ T3613] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.713718][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.722951][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.731283][ T25] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.738354][ T25] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.746134][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.754670][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.763510][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.772511][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.780810][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.789535][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.797870][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.806280][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.814536][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.822941][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.832489][ T3603] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.840357][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.861937][ T3603] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.868940][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.876902][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 53.002641][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.012703][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.024780][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.033449][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.043251][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.051106][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.060179][ T3603] device veth0_vlan entered promiscuous mode [ 53.071008][ T3603] device veth1_vlan entered promiscuous mode [ 53.088820][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.096855][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.105130][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.114218][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.124910][ T3603] device veth0_macvtap entered promiscuous mode [ 53.135187][ T3603] device veth1_macvtap entered promiscuous mode [ 53.149858][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.157323][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.165655][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.174064][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.183283][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.195690][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.203799][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.212846][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.224842][ T3603] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.234744][ T3603] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.243688][ T3603] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.252739][ T3603] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.315502][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.324820][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.338553][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.358227][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.366733][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.375775][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/15 14:46:28 building call list... [ 53.601551][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.583271][ T3626] can: request_module (can-proto-0) failed. [ 55.606529][ T3626] can: request_module (can-proto-0) failed. [ 55.628300][ T3626] can: request_module (can-proto-0) failed. [ 55.930415][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program