DUID 00:04:44:5a:cc:c9:49:7a:03:7b:0e:36:9f:1a:c7:8d:92:7d forked to background, child pid 3175 [ 29.787509][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.800905][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. 2022/02/09 12:19:05 fuzzer started 2022/02/09 12:19:06 connecting to host at 10.128.0.169:37837 2022/02/09 12:19:06 checking machine... 2022/02/09 12:19:06 checking revisions... 2022/02/09 12:19:06 testing simple program... syzkaller login: [ 49.978378][ T3603] cgroup: Unknown subsys name 'net' [ 50.147050][ T3603] cgroup: Unknown subsys name 'rlimit' [ 51.388747][ T3607] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.396720][ T3607] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.404855][ T3607] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.412638][ T3607] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.420194][ T3607] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.427367][ T3607] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.516727][ T3606] chnl_net:caif_netlink_parms(): no params data found [ 51.560693][ T3606] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.568376][ T3606] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.576901][ T3606] device bridge_slave_0 entered promiscuous mode [ 51.586850][ T3606] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.594391][ T3606] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.602221][ T3606] device bridge_slave_1 entered promiscuous mode [ 51.623037][ T3606] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.634675][ T3606] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.657752][ T3606] team0: Port device team_slave_0 added [ 51.665731][ T3606] team0: Port device team_slave_1 added [ 51.683620][ T3606] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.690947][ T3606] 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. [ 51.717253][ T3606] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.730860][ T3606] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.738020][ T3606] 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. [ 51.768881][ T3606] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.793514][ T3606] [ 51.796048][ T3606] ============================= [ 51.800960][ T3606] WARNING: suspicious RCU usage [ 51.806830][ T3606] 5.17.0-rc2-syzkaller-00716-gaa4725c2fc03 #0 Not tainted [ 51.814013][ T3606] ----------------------------- [ 51.819057][ T3606] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.827554][ T3606] [ 51.827554][ T3606] other info that might help us debug this: [ 51.827554][ T3606] [ 51.837832][ T3606] [ 51.837832][ T3606] rcu_scheduler_active = 2, debug_locks = 1 [ 51.845985][ T3606] 2 locks held by syz-executor.0/3606: [ 51.851483][ T3606] #0: ffffffff8d32c1e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.861081][ T3606] #1: ffff88807665d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.871326][ T3606] [ 51.871326][ T3606] stack backtrace: [ 51.877204][ T3606] CPU: 1 PID: 3606 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00716-gaa4725c2fc03 #0 [ 51.887599][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.897736][ T3606] Call Trace: [ 51.901301][ T3606] [ 51.905090][ T3606] dump_stack_lvl+0xcd/0x134 [ 51.912401][ T3606] hsr_node_get_first+0x9b/0xb0 [ 51.917903][ T3606] hsr_create_self_node+0x22d/0x650 [ 51.923121][ T3606] hsr_dev_finalize+0x2c1/0x7d0 [ 51.927977][ T3606] hsr_newlink+0x315/0x730 [ 51.934035][ T3606] ? hsr_dellink+0x130/0x130 [ 51.938801][ T3606] ? rtnl_create_link+0x7e8/0xc00 [ 51.943812][ T3606] ? hsr_dellink+0x130/0x130 [ 51.948390][ T3606] __rtnl_newlink+0x107c/0x1760 [ 51.953240][ T3606] ? rtnl_setlink+0x3c0/0x3c0 [ 51.957904][ T3606] ? is_bpf_text_address+0x77/0x170 [ 51.963178][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 51.968104][ T3606] ? unwind_next_frame+0xee1/0x1ce0 [ 51.973288][ T3606] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.979359][ T3606] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.985158][ T3606] ? is_bpf_text_address+0x99/0x170 [ 51.990356][ T3606] ? kernel_text_address+0x39/0x80 [ 51.995468][ T3606] ? __kernel_text_address+0x9/0x30 [ 52.000668][ T3606] ? unwind_get_return_address+0x51/0x90 [ 52.006395][ T3606] ? create_prof_cpu_mask+0x20/0x20 [ 52.011604][ T3606] ? arch_stack_walk+0x93/0xe0 [ 52.016405][ T3606] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.021882][ T3606] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.027624][ T3606] rtnl_newlink+0x64/0xa0 [ 52.032623][ T3606] ? __rtnl_newlink+0x1760/0x1760 [ 52.039312][ T3606] rtnetlink_rcv_msg+0x413/0xb80 [ 52.046327][ T3606] ? rtnl_newlink+0xa0/0xa0 [ 52.051398][ T3606] netlink_rcv_skb+0x153/0x420 [ 52.056157][ T3606] ? rtnl_newlink+0xa0/0xa0 [ 52.060778][ T3606] ? netlink_ack+0xa60/0xa60 [ 52.065697][ T3606] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.070973][ T3606] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.076521][ T3606] netlink_unicast+0x539/0x7e0 [ 52.081292][ T3606] ? netlink_attachskb+0x880/0x880 [ 52.086400][ T3606] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.092640][ T3606] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.098878][ T3606] ? __phys_addr_symbol+0x2c/0x70 [ 52.103992][ T3606] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.109707][ T3606] ? __check_object_size+0x16e/0x310 [ 52.115067][ T3606] netlink_sendmsg+0x904/0xe00 [ 52.119824][ T3606] ? netlink_unicast+0x7e0/0x7e0 [ 52.124750][ T3606] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.130987][ T3606] ? netlink_unicast+0x7e0/0x7e0 [ 52.136006][ T3606] sock_sendmsg+0xcf/0x120 [ 52.140410][ T3606] __sys_sendto+0x21c/0x320 [ 52.144983][ T3606] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.150338][ T3606] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.156407][ T3606] ? __context_tracking_exit+0xb8/0xe0 [ 52.161942][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 52.166776][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 52.171617][ T3606] __x64_sys_sendto+0xdd/0x1b0 [ 52.176364][ T3606] ? lockdep_hardirqs_on+0x79/0x100 [ 52.181799][ T3606] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.187712][ T3606] do_syscall_64+0x35/0xb0 [ 52.192151][ T3606] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.198041][ T3606] RIP: 0033:0x7f668589ae1c [ 52.202553][ T3606] 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 [ 52.223935][ T3606] RSP: 002b:00007ffe9629d820 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.232337][ T3606] RAX: ffffffffffffffda RBX: 00007f6686933320 RCX: 00007f668589ae1c [ 52.240295][ T3606] RDX: 0000000000000048 RSI: 00007f6686933370 RDI: 0000000000000003 [ 52.248334][ T3606] RBP: 0000000000000000 R08: 00007ffe9629d874 R09: 000000000000000c [ 52.256302][ T3606] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.264263][ T3606] R13: 00007f6686933370 R14: 0000000000000003 R15: 0000000000000000 [ 52.272318][ T3606] [ 52.280182][ T3606] device hsr_slave_0 entered promiscuous mode [ 52.287995][ T3606] device hsr_slave_1 entered promiscuous mode [ 52.369936][ T3606] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.381085][ T3606] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.390305][ T3606] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.398919][ T3606] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.421131][ T3606] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.428456][ T3606] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.436381][ T3606] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.443518][ T3606] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.487460][ T3606] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.500660][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.511330][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.521822][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.531087][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.546043][ T3606] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.555405][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.564263][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.572954][ T3617] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.580101][ T3617] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.601240][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.610470][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.618916][ T3617] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.626213][ T3617] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.634066][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.642938][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.651918][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.660959][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.670058][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.680948][ T922] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.690873][ T922] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.705616][ T3606] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.716474][ T3606] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.727942][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.736352][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.745604][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready executing program [ 52.754267][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.765955][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.781878][ T922] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.790988][ T922] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.804694][ T3606] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.921065][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.930269][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.938855][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.947809][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.956937][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.965077][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.975471][ T3606] device veth0_vlan entered promiscuous mode [ 52.986483][ T3606] device veth1_vlan entered promiscuous mode [ 53.003056][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.011839][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.020692][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.029288][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.040054][ T3606] device veth0_macvtap entered promiscuous mode [ 53.049088][ T3606] device veth1_macvtap entered promiscuous mode [ 53.064750][ T3606] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.072271][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.081287][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.090091][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.098607][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.110030][ T3606] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.120007][ T3606] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.129063][ T3606] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.138312][ T3606] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.147484][ T3606] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.159008][ T922] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.168113][ T922] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.228628][ T44] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.241690][ T44] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.257149][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.268581][ T44] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.277163][ T44] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.286547][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/09 12:19:09 building call list... [ 55.637055][ T3600] can: request_module (can-proto-0) failed. [ 55.661073][ T3600] can: request_module (can-proto-0) failed. [ 55.683142][ T3600] can: request_module (can-proto-0) failed. executing program [ 56.293176][ T3606] syz-executor.0 (3606) used greatest stack depth: 22576 bytes left [ 56.325914][ T44] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0