DUID 00:04:1e:62:2e:d3:28:4c:47:2c:f6:06:4a:96:1e:52:1a:b0 forked to background, child pid 3173 [ 30.481215][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.494110][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. 2022/02/16 22:33:14 fuzzer started 2022/02/16 22:33:14 connecting to host at 10.128.0.169:39463 2022/02/16 22:33:14 checking machine... 2022/02/16 22:33:14 checking revisions... 2022/02/16 22:33:15 testing simple program... syzkaller login: [ 52.203761][ T3601] cgroup: Unknown subsys name 'net' [ 52.339333][ T3601] cgroup: Unknown subsys name 'rlimit' [ 53.573178][ T3607] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 53.581516][ T3607] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 53.589627][ T3607] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 53.598345][ T3607] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 53.606977][ T3607] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 53.615036][ T3607] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 53.709660][ T3603] chnl_net:caif_netlink_parms(): no params data found [ 53.754532][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.762209][ T3603] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.770144][ T3603] device bridge_slave_0 entered promiscuous mode [ 53.779761][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.787365][ T3603] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.795903][ T3603] device bridge_slave_1 entered promiscuous mode [ 53.817578][ T3603] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.830163][ T3603] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.853702][ T3603] team0: Port device team_slave_0 added [ 53.861568][ T3603] team0: Port device team_slave_1 added [ 53.881048][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.889121][ 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. [ 53.916454][ T3603] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.930346][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.937610][ 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. [ 53.964824][ T3603] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.989710][ T3603] [ 53.992476][ T3603] ============================= [ 53.997444][ T3603] WARNING: suspicious RCU usage [ 54.002373][ T3603] 5.17.0-rc2-syzkaller-00969-g477bb4c1baa7 #0 Not tainted [ 54.009498][ T3603] ----------------------------- [ 54.014952][ T3603] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 54.023658][ T3603] [ 54.023658][ T3603] other info that might help us debug this: [ 54.023658][ T3603] [ 54.034029][ T3603] [ 54.034029][ T3603] rcu_scheduler_active = 2, debug_locks = 1 [ 54.042752][ T3603] 2 locks held by syz-executor.0/3603: [ 54.048235][ T3603] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 54.057904][ T3603] #1: ffff888018ef55f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 54.068367][ T3603] [ 54.068367][ T3603] stack backtrace: [ 54.074332][ T3603] CPU: 1 PID: 3603 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00969-g477bb4c1baa7 #0 [ 54.084761][ T3603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.095147][ T3603] Call Trace: [ 54.098665][ T3603] [ 54.101863][ T3603] dump_stack_lvl+0xcd/0x134 [ 54.106548][ T3603] hsr_node_get_first+0x9b/0xb0 [ 54.111440][ T3603] hsr_create_self_node+0x22d/0x650 [ 54.116919][ T3603] hsr_dev_finalize+0x2c1/0x7d0 [ 54.121886][ T3603] hsr_newlink+0x315/0x730 [ 54.126312][ T3603] ? hsr_dellink+0x130/0x130 [ 54.130894][ T3603] ? rtnl_create_link+0x7e8/0xc00 [ 54.135912][ T3603] ? hsr_dellink+0x130/0x130 [ 54.140585][ T3603] __rtnl_newlink+0x107c/0x1760 [ 54.145431][ T3603] ? rtnl_setlink+0x3c0/0x3c0 [ 54.150119][ T3603] ? is_bpf_text_address+0x77/0x170 [ 54.155574][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 54.160510][ T3603] ? unwind_next_frame+0xee1/0x1ce0 [ 54.165713][ T3603] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.171976][ T3603] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 54.177721][ T3603] ? is_bpf_text_address+0x99/0x170 [ 54.183003][ T3603] ? kernel_text_address+0x39/0x80 [ 54.188258][ T3603] ? __kernel_text_address+0x9/0x30 [ 54.193666][ T3603] ? unwind_get_return_address+0x51/0x90 [ 54.199633][ T3603] ? create_prof_cpu_mask+0x20/0x20 [ 54.205014][ T3603] ? arch_stack_walk+0x93/0xe0 [ 54.210239][ T3603] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 54.215798][ T3603] ? rcu_read_lock_sched_held+0x3a/0x70 [ 54.221396][ T3603] rtnl_newlink+0x64/0xa0 [ 54.225750][ T3603] ? __rtnl_newlink+0x1760/0x1760 [ 54.230783][ T3603] rtnetlink_rcv_msg+0x413/0xb80 [ 54.235947][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 54.240479][ T3603] netlink_rcv_skb+0x153/0x420 [ 54.245324][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 54.249844][ T3603] ? netlink_ack+0xa60/0xa60 [ 54.254646][ T3603] ? netlink_deliver_tap+0x1a2/0xc40 [ 54.260026][ T3603] ? netlink_deliver_tap+0x1b1/0xc40 [ 54.265916][ T3603] netlink_unicast+0x539/0x7e0 [ 54.270675][ T3603] ? netlink_attachskb+0x880/0x880 [ 54.275870][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.282118][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.288358][ T3603] ? __phys_addr_symbol+0x2c/0x70 [ 54.293461][ T3603] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 54.299208][ T3603] ? __check_object_size+0x16e/0x310 [ 54.304484][ T3603] netlink_sendmsg+0x904/0xe00 [ 54.309245][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 54.314466][ T3603] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 54.320832][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 54.325780][ T3603] sock_sendmsg+0xcf/0x120 [ 54.330364][ T3603] __sys_sendto+0x21c/0x320 [ 54.334858][ T3603] ? __ia32_sys_getpeername+0xb0/0xb0 [ 54.340234][ T3603] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 54.346477][ T3603] ? __context_tracking_exit+0xb8/0xe0 [ 54.351968][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 54.356925][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 54.361826][ T3603] __x64_sys_sendto+0xdd/0x1b0 [ 54.366611][ T3603] ? lockdep_hardirqs_on+0x79/0x100 [ 54.371827][ T3603] ? syscall_enter_from_user_mode+0x21/0x70 [ 54.377757][ T3603] do_syscall_64+0x35/0xb0 [ 54.382180][ T3603] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.388237][ T3603] RIP: 0033:0x7f309210ce1c [ 54.392644][ 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 [ 54.412697][ T3603] RSP: 002b:00007ffeb0fe7b20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.421351][ T3603] RAX: ffffffffffffffda RBX: 00007f30931a5320 RCX: 00007f309210ce1c [ 54.429406][ T3603] RDX: 0000000000000048 RSI: 00007f30931a5370 RDI: 0000000000000003 [ 54.437564][ T3603] RBP: 0000000000000000 R08: 00007ffeb0fe7b74 R09: 000000000000000c [ 54.445536][ T3603] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.453628][ T3603] R13: 00007f30931a5370 R14: 0000000000000003 R15: 0000000000000000 [ 54.462004][ T3603] [ 54.470010][ T3603] device hsr_slave_0 entered promiscuous mode [ 54.479175][ T3603] device hsr_slave_1 entered promiscuous mode [ 54.595322][ T3603] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.609281][ T3603] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.619281][ T3603] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.629278][ T3603] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.662458][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.669813][ T3603] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.677906][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.685023][ T3603] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.751397][ T3603] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.764799][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.774507][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.784819][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.805027][ T3603] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.812928][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 54.821072][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.833557][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.842537][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.850943][ T1898] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.858257][ T1898] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.874946][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.883812][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.892800][ T3615] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.900011][ T3615] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.907742][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.917077][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.929070][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.939332][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.948666][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.960294][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.969305][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.985014][ T3603] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 54.995762][ T3603] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network executing program [ 55.011203][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 55.020122][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.029130][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 55.038634][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.047946][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.068982][ T3603] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.076818][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.084615][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.193516][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 55.203605][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.218411][ T3603] device veth0_vlan entered promiscuous mode [ 55.227188][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 55.236060][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.245735][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.254077][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.266090][ T3603] device veth1_vlan entered promiscuous mode [ 55.285615][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.295315][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.303791][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.312733][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.325331][ T3603] device veth0_macvtap entered promiscuous mode [ 55.335087][ T3603] device veth1_macvtap entered promiscuous mode [ 55.350730][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.359036][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.368118][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 55.377160][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 55.386967][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.400645][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.408658][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 55.418664][ T1898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 55.429795][ T3603] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.439244][ T3603] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.448325][ T3603] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.457144][ T3603] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.525092][ T90] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.535527][ T90] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.554585][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.564613][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.574515][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.583707][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/16 22:33:18 building call list... [ 55.714362][ T39] Bluetooth: hci0: command 0x0409 tx timeout [ 55.837067][ T90] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.940169][ T3597] can: request_module (can-proto-0) failed. [ 57.963028][ T3597] can: request_module (can-proto-0) failed. [ 57.984179][ T3597] can: request_module (can-proto-0) failed. executing program [ 58.396623][ T3603] syz-executor.0 (3603) used greatest stack depth: 22480 bytes left [ 58.644219][ T90] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0