DUID 00:04:ac:d3:e9:6f:d6:cf:30:00:cb:75:86:98:6a:d5:8e:9b forked to background, child pid 3175 [ 26.962784][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.972612][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.107' (ECDSA) to the list of known hosts. 2022/03/01 12:59:06 fuzzer started 2022/03/01 12:59:07 connecting to host at 10.128.0.169:46023 2022/03/01 12:59:07 checking machine... 2022/03/01 12:59:07 checking revisions... 2022/03/01 12:59:07 testing simple program... syzkaller login: [ 47.081174][ T3596] cgroup: Unknown subsys name 'net' [ 47.263327][ T3596] cgroup: Unknown subsys name 'rlimit' [ 48.477076][ T3600] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 48.485218][ T3600] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 48.492960][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 48.503752][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 48.511591][ T3600] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 48.519112][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 48.609584][ T3599] chnl_net:caif_netlink_parms(): no params data found [ 48.653663][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.661408][ T3599] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.669897][ T3599] device bridge_slave_0 entered promiscuous mode [ 48.679713][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.686986][ T3599] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.695169][ T3599] device bridge_slave_1 entered promiscuous mode [ 48.716775][ T3599] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.728067][ T3599] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.751376][ T3599] team0: Port device team_slave_0 added [ 48.758756][ T3599] team0: Port device team_slave_1 added [ 48.776966][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.784024][ T3599] 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. [ 48.810233][ T3599] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.823108][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.830263][ T3599] 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. [ 48.856380][ T3599] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.879915][ T3599] [ 48.882338][ T3599] ============================= [ 48.887218][ T3599] WARNING: suspicious RCU usage [ 48.892059][ T3599] 5.17.0-rc4-syzkaller-01376-gbd004cad78c0 #0 Not tainted [ 48.899223][ T3599] ----------------------------- [ 48.904183][ T3599] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.912373][ T3599] [ 48.912373][ T3599] other info that might help us debug this: [ 48.912373][ T3599] [ 48.922637][ T3599] [ 48.922637][ T3599] rcu_scheduler_active = 2, debug_locks = 1 [ 48.930732][ T3599] 2 locks held by syz-executor.0/3599: [ 48.936185][ T3599] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.945671][ T3599] #1: ffff88801c4395f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.955826][ T3599] [ 48.955826][ T3599] stack backtrace: [ 48.962036][ T3599] CPU: 1 PID: 3599 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01376-gbd004cad78c0 #0 [ 48.972452][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.982771][ T3599] Call Trace: [ 48.986044][ T3599] [ 48.988968][ T3599] dump_stack_lvl+0xcd/0x134 [ 48.993561][ T3599] hsr_node_get_first+0x9b/0xb0 [ 48.998410][ T3599] hsr_create_self_node+0x22d/0x650 [ 49.003606][ T3599] hsr_dev_finalize+0x2c1/0x7d0 [ 49.008460][ T3599] hsr_newlink+0x315/0x730 [ 49.012865][ T3599] ? hsr_dellink+0x130/0x130 [ 49.017447][ T3599] ? rtnl_create_link+0x7e8/0xc00 [ 49.022473][ T3599] ? hsr_dellink+0x130/0x130 [ 49.027065][ T3599] __rtnl_newlink+0x107c/0x1760 [ 49.031921][ T3599] ? rtnl_setlink+0x3c0/0x3c0 [ 49.036608][ T3599] ? is_bpf_text_address+0x77/0x170 [ 49.041806][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 49.046658][ T3599] ? unwind_next_frame+0xee1/0x1ce0 [ 49.051852][ T3599] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.057912][ T3599] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.063629][ T3599] ? is_bpf_text_address+0x99/0x170 [ 49.068824][ T3599] ? kernel_text_address+0x39/0x80 [ 49.073943][ T3599] ? __kernel_text_address+0x9/0x30 [ 49.079142][ T3599] ? unwind_get_return_address+0x51/0x90 [ 49.084769][ T3599] ? create_prof_cpu_mask+0x20/0x20 [ 49.089960][ T3599] ? arch_stack_walk+0x93/0xe0 [ 49.094762][ T3599] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 49.100227][ T3599] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.105781][ T3599] rtnl_newlink+0x64/0xa0 [ 49.110461][ T3599] ? __rtnl_newlink+0x1760/0x1760 [ 49.115518][ T3599] rtnetlink_rcv_msg+0x413/0xb80 [ 49.120451][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.125223][ T3599] netlink_rcv_skb+0x153/0x420 [ 49.129984][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.134747][ T3599] ? netlink_ack+0xa60/0xa60 [ 49.139326][ T3599] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.144610][ T3599] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.149900][ T3599] netlink_unicast+0x539/0x7e0 [ 49.154667][ T3599] ? netlink_attachskb+0x880/0x880 [ 49.159768][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.166030][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.172261][ T3599] ? __phys_addr_symbol+0x2c/0x70 [ 49.177278][ T3599] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 49.182991][ T3599] ? __check_object_size+0x16e/0x310 [ 49.188273][ T3599] netlink_sendmsg+0x904/0xe00 [ 49.193035][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 49.197966][ T3599] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.204201][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 49.209130][ T3599] sock_sendmsg+0xcf/0x120 [ 49.213545][ T3599] __sys_sendto+0x21c/0x320 [ 49.218040][ T3599] ? __ia32_sys_getpeername+0xb0/0xb0 [ 49.223489][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 49.228695][ T3599] ? __context_tracking_exit+0xb8/0xe0 [ 49.234151][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 49.239010][ T3599] __x64_sys_sendto+0xdd/0x1b0 [ 49.243762][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 49.248952][ T3599] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.254862][ T3599] do_syscall_64+0x35/0xb0 [ 49.259272][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.265167][ T3599] RIP: 0033:0x7fdb01354e0c [ 49.269575][ T3599] 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 [ 49.289349][ T3599] RSP: 002b:00007ffed3a5ac90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 49.297756][ T3599] RAX: ffffffffffffffda RBX: 00007fdb023ed320 RCX: 00007fdb01354e0c [ 49.305723][ T3599] RDX: 0000000000000048 RSI: 00007fdb023ed370 RDI: 0000000000000003 [ 49.313682][ T3599] RBP: 0000000000000000 R08: 00007ffed3a5ace4 R09: 000000000000000c [ 49.321646][ T3599] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 49.329607][ T3599] R13: 00007fdb023ed370 R14: 0000000000000003 R15: 0000000000000000 [ 49.337592][ T3599] [ 49.345018][ T3599] device hsr_slave_0 entered promiscuous mode [ 49.352969][ T3599] device hsr_slave_1 entered promiscuous mode [ 49.433868][ T3599] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 49.444583][ T3599] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 49.454029][ T3599] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 49.463559][ T3599] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 49.485008][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.492263][ T3599] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.500255][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.507432][ T3599] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.551890][ T3599] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.564373][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.575381][ T3261] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.583844][ T3261] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.593308][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 49.607817][ T3599] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.618913][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.627996][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.636514][ T21] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.643834][ T21] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.666443][ T3599] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 49.678670][ T3599] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.692568][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.701462][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.709961][ T3611] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.717102][ T3611] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.724639][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.733246][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.741871][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.751609][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.760079][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.768764][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.777467][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.785740][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.794890][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.803379][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 49.811959][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.820154][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.839864][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.847446][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.859052][ T3599] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 49.969740][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.978750][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.997551][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.006183][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.017530][ T3599] device veth0_vlan entered promiscuous mode [ 50.026796][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.034451][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.045391][ T3599] device veth1_vlan entered promiscuous mode [ 50.064101][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.073157][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.081646][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.090845][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.102657][ T3599] device veth0_macvtap entered promiscuous mode [ 50.112242][ T3599] device veth1_macvtap entered promiscuous mode [ 50.126415][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.135183][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.143692][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.152794][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.162013][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.174391][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.182453][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.191166][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.201980][ T3599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.211059][ T3599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.220238][ T3599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.229665][ T3599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.293855][ T49] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.304864][ T49] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.317352][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 50.329815][ T1238] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.338144][ T1238] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.347024][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/03/01 12:59:10 building call list... [ 52.746157][ T3590] can: request_module (can-proto-0) failed. [ 52.768001][ T3590] can: request_module (can-proto-0) failed. [ 52.791707][ T3590] can: request_module (can-proto-0) failed. executing program [ 53.187699][ T1238] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0