DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 3172 [ 27.764866][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.774517][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts. 2022/02/07 04:52:03 fuzzer started 2022/02/07 04:52:03 connecting to host at 10.128.0.169:40095 2022/02/07 04:52:03 checking machine... 2022/02/07 04:52:03 checking revisions... 2022/02/07 04:52:04 testing simple program... syzkaller login: [ 48.923281][ T3593] cgroup: Unknown subsys name 'net' [ 49.058759][ T3593] cgroup: Unknown subsys name 'rlimit' [ 50.331349][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 50.339805][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 50.347449][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 50.355572][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 50.363879][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 50.371080][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.456175][ T3595] chnl_net:caif_netlink_parms(): no params data found [ 50.498149][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.506138][ T3595] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.514356][ T3595] device bridge_slave_0 entered promiscuous mode [ 50.524280][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.531463][ T3595] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.539370][ T3595] device bridge_slave_1 entered promiscuous mode [ 50.560465][ T3595] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.572438][ T3595] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.604084][ T3595] team0: Port device team_slave_0 added [ 50.611492][ T3595] team0: Port device team_slave_1 added [ 50.628817][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.635815][ T3595] 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. [ 50.662633][ T3595] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.676109][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.684138][ T3595] 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. [ 50.711121][ T3595] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.735919][ T3595] [ 50.738463][ T3595] ============================= [ 50.743350][ T3595] WARNING: suspicious RCU usage [ 50.748188][ T3595] 5.17.0-rc3-next-20220207-syzkaller #0 Not tainted [ 50.754812][ T3595] ----------------------------- [ 50.759651][ T3595] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 50.767836][ T3595] [ 50.767836][ T3595] other info that might help us debug this: [ 50.767836][ T3595] [ 50.778095][ T3595] [ 50.778095][ T3595] rcu_scheduler_active = 2, debug_locks = 1 [ 50.786185][ T3595] 2 locks held by syz-executor.0/3595: [ 50.791643][ T3595] #0: ffffffff8d3353a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 50.801138][ T3595] #1: ffff88801d8695f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 50.811315][ T3595] [ 50.811315][ T3595] stack backtrace: [ 50.817256][ T3595] CPU: 1 PID: 3595 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220207-syzkaller #0 [ 50.827144][ T3595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.837197][ T3595] Call Trace: [ 50.840468][ T3595] [ 50.843390][ T3595] dump_stack_lvl+0xcd/0x134 [ 50.847989][ T3595] hsr_node_get_first+0x9b/0xb0 [ 50.852836][ T3595] hsr_create_self_node+0x22d/0x650 [ 50.858031][ T3595] hsr_dev_finalize+0x2c1/0x7d0 [ 50.862884][ T3595] hsr_newlink+0x315/0x730 [ 50.867297][ T3595] ? hsr_dellink+0x130/0x130 [ 50.871885][ T3595] ? rtnl_create_link+0x7e8/0xc00 [ 50.876909][ T3595] ? hsr_dellink+0x130/0x130 [ 50.881498][ T3595] __rtnl_newlink+0x107c/0x1760 [ 50.886358][ T3595] ? rtnl_setlink+0x3c0/0x3c0 [ 50.891039][ T3595] ? is_bpf_text_address+0x77/0x170 [ 50.896243][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 50.901099][ T3595] ? unwind_next_frame+0xee1/0x1ce0 [ 50.906296][ T3595] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.912359][ T3595] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 50.918086][ T3595] ? is_bpf_text_address+0x99/0x170 [ 50.923339][ T3595] ? kernel_text_address+0x39/0x80 [ 50.928451][ T3595] ? __kernel_text_address+0x9/0x30 [ 50.933647][ T3595] ? unwind_get_return_address+0x51/0x90 [ 50.939279][ T3595] ? create_prof_cpu_mask+0x20/0x20 [ 50.944485][ T3595] ? arch_stack_walk+0x93/0xe0 [ 50.949295][ T3595] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 50.954761][ T3595] ? rcu_read_lock_sched_held+0x3a/0x70 [ 50.960319][ T3595] rtnl_newlink+0x64/0xa0 [ 50.964647][ T3595] ? __rtnl_newlink+0x1760/0x1760 [ 50.969678][ T3595] rtnetlink_rcv_msg+0x413/0xb80 [ 50.974617][ T3595] ? rtnl_newlink+0xa0/0xa0 [ 50.979133][ T3595] netlink_rcv_skb+0x153/0x420 [ 50.983900][ T3595] ? rtnl_newlink+0xa0/0xa0 [ 50.988406][ T3595] ? netlink_ack+0xa80/0xa80 [ 50.992991][ T3595] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.998282][ T3595] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.003573][ T3595] netlink_unicast+0x539/0x7e0 [ 51.008344][ T3595] ? netlink_attachskb+0x880/0x880 [ 51.013546][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.019803][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.026046][ T3595] ? __phys_addr_symbol+0x2c/0x70 [ 51.031073][ T3595] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.036798][ T3595] ? __check_object_size+0x16c/0x4f0 [ 51.042088][ T3595] netlink_sendmsg+0x904/0xe00 [ 51.046861][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 51.051798][ T3595] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.058047][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 51.062985][ T3595] sock_sendmsg+0xcf/0x120 [ 51.067405][ T3595] __sys_sendto+0x21c/0x320 [ 51.071912][ T3595] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.077296][ T3595] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 51.083302][ T3595] ? __context_tracking_exit+0xb8/0xe0 [ 51.088769][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 51.093622][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 51.098490][ T3595] __x64_sys_sendto+0xdd/0x1b0 [ 51.103254][ T3595] ? lockdep_hardirqs_on+0x79/0x100 [ 51.108452][ T3595] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.114352][ T3595] do_syscall_64+0x35/0xb0 [ 51.118770][ T3595] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.124657][ T3595] RIP: 0033:0x7fadcac08e1c [ 51.129066][ T3595] 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 [ 51.148665][ T3595] RSP: 002b:00007fffd4488540 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 51.157075][ T3595] RAX: ffffffffffffffda RBX: 00007fadcbca1320 RCX: 00007fadcac08e1c [ 51.165034][ T3595] RDX: 0000000000000048 RSI: 00007fadcbca1370 RDI: 0000000000000003 [ 51.172998][ T3595] RBP: 0000000000000000 R08: 00007fffd4488594 R09: 000000000000000c [ 51.180972][ T3595] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 51.188937][ T3595] R13: 00007fadcbca1370 R14: 0000000000000003 R15: 0000000000000000 [ 51.196916][ T3595] [ 51.206812][ T3595] device hsr_slave_0 entered promiscuous mode [ 51.214182][ T3595] device hsr_slave_1 entered promiscuous mode [ 51.292270][ T3595] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.302634][ T3595] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.311980][ T3595] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.321568][ T3595] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.342449][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.349594][ T3595] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.357427][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.364509][ T3595] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.408113][ T3595] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.421504][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.433152][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.441405][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.450729][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.463348][ T3595] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.475225][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.483682][ T3604] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.490763][ T3604] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.501964][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.510858][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.520515][ T1738] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.527620][ T1738] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.543337][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.562925][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.571427][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.580571][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.589196][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.597964][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.606652][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 51.615737][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.624126][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 51.632503][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.644238][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.654403][ T3595] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 51.670052][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.678223][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.691614][ T3595] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.817200][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 51.826295][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.838757][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.847575][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.857552][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.865827][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.875184][ T3595] device veth0_vlan entered promiscuous mode [ 51.886055][ T3595] device veth1_vlan entered promiscuous mode [ 51.904892][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.913862][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.921891][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.930620][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.941798][ T3595] device veth0_macvtap entered promiscuous mode [ 51.951378][ T3595] device veth1_macvtap entered promiscuous mode [ 51.966993][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.975283][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.984181][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.992427][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.001590][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.013947][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.022324][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.030879][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.041984][ T3595] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.050963][ T3595] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.059939][ T3595] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.070063][ T3595] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.129809][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.138188][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.154711][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.170980][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.179129][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.188450][ T1738] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/07 04:52:07 building call list... [ 52.480282][ T973] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.587078][ T3586] can: request_module (can-proto-0) failed. [ 54.609685][ T3586] can: request_module (can-proto-0) failed. [ 54.630511][ T3586] can: request_module (can-proto-0) failed. executing program [ 55.285831][ T3595] syz-executor.0 (3595) used greatest stack depth: 22048 bytes left [ 55.358825][ T973] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0