DUID 00:04:08:6f:95:b8:7a:da:47:d5:ae:28:d8:4d:e4:58:2e:6d forked to background, child pid 3172 [ 31.569724][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.581005][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 42.084278][ T3385] sshd (3385) used greatest stack depth: 22784 bytes left Warning: Permanently added '10.128.0.242' (ECDSA) to the list of known hosts. 2022/02/16 23:44:06 fuzzer started 2022/02/16 23:44:06 connecting to host at 10.128.0.169:42757 2022/02/16 23:44:06 checking machine... 2022/02/16 23:44:06 checking revisions... 2022/02/16 23:44:06 testing simple program... [ 52.560231][ T3599] cgroup: Unknown subsys name 'net' [ 52.667271][ T3599] cgroup: Unknown subsys name 'rlimit' [ 53.940475][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 53.948594][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 53.957787][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 53.966347][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 53.974372][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 53.981814][ T3602] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 54.071165][ T3601] chnl_net:caif_netlink_parms(): no params data found [ 54.116988][ T3601] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.124869][ T3601] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.133085][ T3601] device bridge_slave_0 entered promiscuous mode [ 54.142478][ T3601] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.149607][ T3601] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.158268][ T3601] device bridge_slave_1 entered promiscuous mode [ 54.179745][ T3601] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.191293][ T3601] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.214698][ T3601] team0: Port device team_slave_0 added [ 54.222308][ T3601] team0: Port device team_slave_1 added [ 54.240429][ T3601] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 54.248185][ T3601] 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. [ 54.275936][ T3601] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 54.288833][ T3601] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 54.295998][ T3601] 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. [ 54.322825][ T3601] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 54.346354][ T3601] [ 54.349760][ T3601] ============================= [ 54.354656][ T3601] WARNING: suspicious RCU usage [ 54.360980][ T3601] 5.17.0-rc4-next-20220216-syzkaller #0 Not tainted [ 54.367688][ T3601] ----------------------------- [ 54.372586][ T3601] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 54.381078][ T3601] [ 54.381078][ T3601] other info that might help us debug this: [ 54.381078][ T3601] [ 54.391529][ T3601] [ 54.391529][ T3601] rcu_scheduler_active = 2, debug_locks = 1 [ 54.399695][ T3601] 2 locks held by syz-executor.0/3601: [ 54.405218][ T3601] #0: ffffffff8d3390e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 54.414876][ T3601] #1: ffff88802490d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 54.425108][ T3601] [ 54.425108][ T3601] stack backtrace: [ 54.431111][ T3601] CPU: 1 PID: 3601 Comm: syz-executor.0 Not tainted 5.17.0-rc4-next-20220216-syzkaller #0 [ 54.441072][ T3601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.451196][ T3601] Call Trace: [ 54.454467][ T3601] [ 54.457556][ T3601] dump_stack_lvl+0xcd/0x134 [ 54.462319][ T3601] hsr_node_get_first+0x9b/0xb0 [ 54.467423][ T3601] hsr_create_self_node+0x22d/0x650 [ 54.472627][ T3601] hsr_dev_finalize+0x2c1/0x7d0 [ 54.477471][ T3601] hsr_newlink+0x315/0x730 [ 54.481883][ T3601] ? hsr_dellink+0x130/0x130 [ 54.486469][ T3601] ? rtnl_create_link+0x7e8/0xc00 [ 54.491757][ T3601] ? hsr_dellink+0x130/0x130 [ 54.496703][ T3601] __rtnl_newlink+0x107c/0x1760 [ 54.501735][ T3601] ? rtnl_setlink+0x3c0/0x3c0 [ 54.506492][ T3601] ? is_bpf_text_address+0x77/0x170 [ 54.511682][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 54.516616][ T3601] ? unwind_next_frame+0xee1/0x1ce0 [ 54.522143][ T3601] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.528385][ T3601] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 54.534319][ T3601] ? is_bpf_text_address+0x99/0x170 [ 54.539514][ T3601] ? kernel_text_address+0x39/0x80 [ 54.544720][ T3601] ? __kernel_text_address+0x9/0x30 [ 54.549940][ T3601] ? unwind_get_return_address+0x51/0x90 [ 54.555917][ T3601] ? create_prof_cpu_mask+0x20/0x20 [ 54.561366][ T3601] ? arch_stack_walk+0x93/0xe0 [ 54.566155][ T3601] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 54.571616][ T3601] ? rcu_read_lock_sched_held+0x3a/0x70 [ 54.577253][ T3601] rtnl_newlink+0x64/0xa0 [ 54.581592][ T3601] ? __rtnl_newlink+0x1760/0x1760 [ 54.586614][ T3601] rtnetlink_rcv_msg+0x413/0xb80 [ 54.591654][ T3601] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 54.596443][ T3601] netlink_rcv_skb+0x153/0x420 [ 54.601202][ T3601] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 54.606130][ T3601] ? netlink_ack+0xa80/0xa80 [ 54.610797][ T3601] ? netlink_deliver_tap+0x1a2/0xc40 [ 54.616182][ T3601] ? netlink_deliver_tap+0x1b1/0xc40 [ 54.621488][ T3601] netlink_unicast+0x539/0x7e0 [ 54.626344][ T3601] ? netlink_attachskb+0x880/0x880 [ 54.631632][ T3601] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.638365][ T3601] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.644709][ T3601] ? __phys_addr_symbol+0x2c/0x70 [ 54.649913][ T3601] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 54.655625][ T3601] ? __check_object_size+0x16c/0x4f0 [ 54.661086][ T3601] netlink_sendmsg+0x904/0xe00 [ 54.665856][ T3601] ? netlink_unicast+0x7e0/0x7e0 [ 54.670810][ T3601] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 54.677566][ T3601] ? netlink_unicast+0x7e0/0x7e0 [ 54.682489][ T3601] sock_sendmsg+0xcf/0x120 [ 54.686894][ T3601] __sys_sendto+0x21c/0x320 [ 54.691475][ T3601] ? __ia32_sys_getpeername+0xb0/0xb0 [ 54.696844][ T3601] ? lockdep_hardirqs_on+0x79/0x100 [ 54.702050][ T3601] ? __context_tracking_exit+0xb8/0xe0 [ 54.707501][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 54.712358][ T3601] __x64_sys_sendto+0xdd/0x1b0 [ 54.717228][ T3601] ? lockdep_hardirqs_on+0x79/0x100 [ 54.722588][ T3601] ? syscall_enter_from_user_mode+0x21/0x70 [ 54.728908][ T3601] do_syscall_64+0x35/0xb0 [ 54.733501][ T3601] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.739395][ T3601] RIP: 0033:0x7f266509ae1c [ 54.743804][ T3601] 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 [ 54.763416][ T3601] RSP: 002b:00007ffd25005720 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.771819][ T3601] RAX: ffffffffffffffda RBX: 00007f2666133320 RCX: 00007f266509ae1c [ 54.779781][ T3601] RDX: 0000000000000048 RSI: 00007f2666133370 RDI: 0000000000000003 [ 54.788017][ T3601] RBP: 0000000000000000 R08: 00007ffd25005774 R09: 000000000000000c [ 54.796171][ T3601] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.804226][ T3601] R13: 00007f2666133370 R14: 0000000000000003 R15: 0000000000000000 [ 54.812281][ T3601] [ 54.819971][ T3601] device hsr_slave_0 entered promiscuous mode [ 54.827418][ T3601] device hsr_slave_1 entered promiscuous mode [ 54.907361][ T3601] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.917935][ T3601] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.927859][ T3601] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.936811][ T3601] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.957998][ T3601] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.965229][ T3601] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.973683][ T3601] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.981044][ T3601] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.026632][ T3601] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.039778][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.050611][ T14] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.059109][ T14] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.068589][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 55.083780][ T3601] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.093878][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 55.103057][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.111979][ T1780] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.119026][ T1780] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.140339][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 55.149117][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.158710][ T14] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.165903][ T14] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.173494][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 55.182433][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.200327][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 55.209470][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.219033][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 55.227833][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.236843][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 55.246036][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.257470][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.265615][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 55.274248][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.285558][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.301592][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.309543][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.324333][ T3601] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 55.432279][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 55.441733][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.458474][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 55.468536][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.478531][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.487509][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.498109][ T3601] device veth0_vlan entered promiscuous mode [ 55.511082][ T3601] device veth1_vlan entered promiscuous mode [ 55.529283][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.538096][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.547148][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.555955][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.566559][ T3601] device veth0_macvtap entered promiscuous mode [ 55.577050][ T3601] device veth1_macvtap entered promiscuous mode [ 55.592174][ T3601] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.600761][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.609149][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 55.617936][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 55.627259][ T1780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.639789][ T3601] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.648164][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 55.657259][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 55.669077][ T3601] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.678180][ T3601] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.689276][ T3601] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.698763][ T3601] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.758111][ T8] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.775194][ T8] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.788714][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.798219][ T84] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.806594][ T84] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.815985][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/16 23:44:09 building call list... [ 56.097290][ T84] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 58.213020][ T3594] can: request_module (can-proto-0) failed. [ 58.237365][ T3594] can: request_module (can-proto-0) failed. [ 58.263694][ T3594] can: request_module (can-proto-0) failed. executing program [ 58.902154][ T3601] syz-executor.0 (3601) used greatest stack depth: 22752 bytes left