DUID 00:04:1e:62:2e:d3:28:4c:47:2c:f6:06:4a:96:1e:52:1a:b0 forked to background, child pid 3174 [ 28.154196][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.169676][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.189' (ECDSA) to the list of known hosts. 2022/02/20 01:09:23 fuzzer started 2022/02/20 01:09:23 connecting to host at 10.128.0.169:39789 2022/02/20 01:09:23 checking machine... 2022/02/20 01:09:23 checking revisions... 2022/02/20 01:09:24 testing simple program... syzkaller login: [ 50.193224][ T3595] cgroup: Unknown subsys name 'net' [ 50.305906][ T3595] cgroup: Unknown subsys name 'rlimit' [ 51.519544][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.527623][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.535436][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.543605][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.551544][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.558901][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.646674][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 51.688457][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.696582][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.705005][ T3597] device bridge_slave_0 entered promiscuous mode [ 51.714046][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.721364][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.729393][ T3597] device bridge_slave_1 entered promiscuous mode [ 51.751444][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.762739][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.785925][ T3597] team0: Port device team_slave_0 added [ 51.793748][ T3597] team0: Port device team_slave_1 added [ 51.812015][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.819085][ 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. [ 51.845933][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.859528][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.866566][ 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. [ 51.893182][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.917670][ T3597] [ 51.920170][ T3597] ============================= [ 51.925005][ T3597] WARNING: suspicious RCU usage [ 51.929934][ T3597] 5.17.0-rc4-syzkaller-01350-ga33c0c792d0a #0 Not tainted [ 51.937164][ T3597] ----------------------------- [ 51.942418][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.950914][ T3597] [ 51.950914][ T3597] other info that might help us debug this: [ 51.950914][ T3597] [ 51.961231][ T3597] [ 51.961231][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 51.969591][ T3597] 2 locks held by syz-executor.0/3597: [ 51.975068][ T3597] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.984558][ T3597] #1: ffff8880731015f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.994819][ T3597] [ 51.994819][ T3597] stack backtrace: [ 52.000779][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01350-ga33c0c792d0a #0 [ 52.011499][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.021756][ T3597] Call Trace: [ 52.025027][ T3597] [ 52.027961][ T3597] dump_stack_lvl+0xcd/0x134 [ 52.032546][ T3597] hsr_node_get_first+0x9b/0xb0 [ 52.037410][ T3597] hsr_create_self_node+0x22d/0x650 [ 52.042611][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 52.047607][ T3597] hsr_newlink+0x315/0x730 [ 52.052205][ T3597] ? hsr_dellink+0x130/0x130 [ 52.056793][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 52.061807][ T3597] ? hsr_dellink+0x130/0x130 [ 52.066384][ T3597] __rtnl_newlink+0x107c/0x1760 [ 52.071231][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 52.075918][ T3597] ? is_bpf_text_address+0x77/0x170 [ 52.081105][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.085954][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 52.091204][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.097475][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.103735][ T3597] ? is_bpf_text_address+0x99/0x170 [ 52.109133][ T3597] ? kernel_text_address+0x39/0x80 [ 52.114267][ T3597] ? __kernel_text_address+0x9/0x30 [ 52.119465][ T3597] ? unwind_get_return_address+0x51/0x90 [ 52.125100][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 52.130319][ T3597] ? arch_stack_walk+0x93/0xe0 [ 52.135149][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 52.140626][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.146178][ T3597] rtnl_newlink+0x64/0xa0 [ 52.150506][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 52.155985][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 52.160932][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 52.165715][ T3597] netlink_rcv_skb+0x153/0x420 [ 52.170604][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 52.175394][ T3597] ? netlink_ack+0xa60/0xa60 [ 52.180151][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.185447][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.190724][ T3597] netlink_unicast+0x539/0x7e0 [ 52.195613][ T3597] ? netlink_attachskb+0x880/0x880 [ 52.200834][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.207117][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.213385][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 52.218409][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.224149][ T3597] ? __check_object_size+0x16e/0x310 [ 52.229438][ T3597] netlink_sendmsg+0x904/0xe00 [ 52.234608][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.239560][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.246066][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.251017][ T3597] sock_sendmsg+0xcf/0x120 [ 52.255432][ T3597] __sys_sendto+0x21c/0x320 [ 52.259959][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.265688][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 52.270914][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 52.276390][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.281249][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 52.286014][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 52.293402][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.299403][ T3597] do_syscall_64+0x35/0xb0 [ 52.303845][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.309867][ T3597] RIP: 0033:0x7f13e9116e1c [ 52.314767][ 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 [ 52.335781][ T3597] RSP: 002b:00007fff670c2150 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.344964][ T3597] RAX: ffffffffffffffda RBX: 00007f13ea1af320 RCX: 00007f13e9116e1c [ 52.352957][ T3597] RDX: 0000000000000048 RSI: 00007f13ea1af370 RDI: 0000000000000003 [ 52.361722][ T3597] RBP: 0000000000000000 R08: 00007fff670c21a4 R09: 000000000000000c [ 52.369849][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.378124][ T3597] R13: 00007f13ea1af370 R14: 0000000000000003 R15: 0000000000000000 [ 52.386515][ T3597] [ 52.393491][ T3597] device hsr_slave_0 entered promiscuous mode [ 52.400652][ T3597] device hsr_slave_1 entered promiscuous mode [ 52.481596][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.493896][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.504003][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.514648][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.536307][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.543551][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.551658][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.558748][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.605540][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.618651][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.631107][ T34] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.640782][ T34] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.648677][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.664161][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.674559][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.683960][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.693505][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.700672][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.718682][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.730184][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.738660][ T34] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.745796][ T34] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.767163][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.776395][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.785563][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.795827][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.804552][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.813290][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.821812][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.830376][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.838798][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.851185][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.860188][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.871411][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.893511][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.901519][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.909076][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 53.017498][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.026679][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.044485][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.054126][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.063757][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.072219][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.081411][ T3597] device veth0_vlan entered promiscuous mode [ 53.093035][ T3597] device veth1_vlan entered promiscuous mode [ 53.113779][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.122111][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.130722][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.140425][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.152061][ T3597] device veth0_macvtap entered promiscuous mode [ 53.162445][ T3597] device veth1_macvtap entered promiscuous mode [ 53.177896][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.185594][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.194339][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.203083][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.212471][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.225449][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.234515][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.243656][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.255050][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.264416][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.273763][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.282848][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.344464][ T44] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.358661][ T44] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.371349][ T54] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.372239][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.382095][ T54] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.396814][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/20 01:09:27 building call list... [ 53.615426][ T44] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.691851][ T3591] can: request_module (can-proto-0) failed. [ 55.714643][ T3591] can: request_module (can-proto-0) failed. [ 55.734350][ T3591] can: request_module (can-proto-0) failed. executing program [ 56.106604][ T3597] syz-executor.0 (3597) used greatest stack depth: 22064 bytes left [ 56.188820][ T44] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0