DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3173 [ 28.259018][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.268882][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.19' (ECDSA) to the list of known hosts. 2022/02/16 23:52:38 fuzzer started 2022/02/16 23:52:38 connecting to host at 10.128.0.169:35283 2022/02/16 23:52:38 checking machine... 2022/02/16 23:52:38 checking revisions... 2022/02/16 23:52:38 testing simple program... syzkaller login: [ 50.612036][ T3595] cgroup: Unknown subsys name 'net' [ 50.747684][ T3595] cgroup: Unknown subsys name 'rlimit' [ 51.950468][ T3600] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.959013][ T3600] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.966885][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.974883][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.983367][ T3600] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.990890][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.077626][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 52.119998][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.127557][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.135859][ T3597] device bridge_slave_0 entered promiscuous mode [ 52.145514][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.152745][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.160444][ T3597] device bridge_slave_1 entered promiscuous mode [ 52.180443][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.192964][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.214673][ T3597] team0: Port device team_slave_0 added [ 52.222920][ T3597] team0: Port device team_slave_1 added [ 52.239728][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.247646][ 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. [ 52.274202][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.287273][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.294868][ 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. [ 52.321658][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.356618][ T3597] [ 52.359239][ T3597] ============================= [ 52.364152][ T3597] WARNING: suspicious RCU usage [ 52.369004][ T3597] 5.17.0-rc3-syzkaller-01192-gf0ead99e623b #0 Not tainted [ 52.376286][ T3597] ----------------------------- [ 52.381220][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.389565][ T3597] [ 52.389565][ T3597] other info that might help us debug this: [ 52.389565][ T3597] [ 52.399958][ T3597] [ 52.399958][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 52.408868][ T3597] 2 locks held by syz-executor.0/3597: [ 52.414366][ T3597] #0: ffffffff8d32cb28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.423978][ T3597] #1: ffff88806e4dd5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.434446][ T3597] [ 52.434446][ T3597] stack backtrace: [ 52.440358][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01192-gf0ead99e623b #0 [ 52.450776][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.461013][ T3597] Call Trace: [ 52.464297][ T3597] [ 52.467230][ T3597] dump_stack_lvl+0xcd/0x134 [ 52.471813][ T3597] hsr_node_get_first+0x9b/0xb0 [ 52.476693][ T3597] hsr_create_self_node+0x22d/0x650 [ 52.481877][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 52.486753][ T3597] hsr_newlink+0x315/0x730 [ 52.491192][ T3597] ? hsr_dellink+0x130/0x130 [ 52.495795][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 52.500844][ T3597] ? hsr_dellink+0x130/0x130 [ 52.505421][ T3597] __rtnl_newlink+0x107c/0x1760 [ 52.510388][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 52.515072][ T3597] ? is_bpf_text_address+0x77/0x170 [ 52.520382][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.525241][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 52.530425][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.536488][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.542198][ T3597] ? is_bpf_text_address+0x99/0x170 [ 52.547413][ T3597] ? kernel_text_address+0x39/0x80 [ 52.552533][ T3597] ? __kernel_text_address+0x9/0x30 [ 52.557751][ T3597] ? unwind_get_return_address+0x51/0x90 [ 52.563369][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 52.568555][ T3597] ? arch_stack_walk+0x93/0xe0 [ 52.573430][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.579076][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.585018][ T3597] rtnl_newlink+0x64/0xa0 [ 52.589870][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 52.594879][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 52.600002][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.604497][ T3597] netlink_rcv_skb+0x153/0x420 [ 52.609251][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.613742][ T3597] ? netlink_ack+0xa60/0xa60 [ 52.618320][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.623598][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.628970][ T3597] netlink_unicast+0x539/0x7e0 [ 52.633837][ T3597] ? netlink_attachskb+0x880/0x880 [ 52.638952][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.645195][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.651442][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 52.656558][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.662263][ T3597] ? __check_object_size+0x16e/0x310 [ 52.667547][ T3597] netlink_sendmsg+0x904/0xe00 [ 52.672301][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.677314][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.683636][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.688577][ T3597] sock_sendmsg+0xcf/0x120 [ 52.692995][ T3597] __sys_sendto+0x21c/0x320 [ 52.697493][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.702855][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.708846][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 52.714291][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.719132][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.723977][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 52.728729][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 52.734015][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.739994][ T3597] do_syscall_64+0x35/0xb0 [ 52.744425][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.750321][ T3597] RIP: 0033:0x7fe2ebc72e1c [ 52.754813][ 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 [ 52.774673][ T3597] RSP: 002b:00007ffe0d557f00 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.783178][ T3597] RAX: ffffffffffffffda RBX: 00007fe2ecd0b320 RCX: 00007fe2ebc72e1c [ 52.791138][ T3597] RDX: 0000000000000048 RSI: 00007fe2ecd0b370 RDI: 0000000000000003 [ 52.799195][ T3597] RBP: 0000000000000000 R08: 00007ffe0d557f54 R09: 000000000000000c [ 52.807168][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.815250][ T3597] R13: 00007fe2ecd0b370 R14: 0000000000000003 R15: 0000000000000000 [ 52.823323][ T3597] [ 52.834898][ T3597] device hsr_slave_0 entered promiscuous mode [ 52.842476][ T3597] device hsr_slave_1 entered promiscuous mode [ 52.974749][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.985884][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.994852][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.004536][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.025957][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.033153][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.040987][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.048149][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.089086][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.105829][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.116460][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.125562][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.135108][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.153154][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.163118][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.172564][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.181004][ T917] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.188119][ T917] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.212451][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.222315][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.230909][ T917] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.238298][ T917] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.246689][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.255983][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.265842][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.275594][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.285181][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.294535][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.303814][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.312515][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.320738][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.329280][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.339288][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.350049][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.373483][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.382999][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 53.390639][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.513757][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.523118][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.536486][ T3597] device veth0_vlan entered promiscuous mode [ 53.543414][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.552997][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.564101][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.571943][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.583022][ T3597] device veth1_vlan entered promiscuous mode [ 53.601767][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.610007][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.619162][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.628768][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.640536][ T3597] device veth0_macvtap entered promiscuous mode [ 53.650027][ T3597] device veth1_macvtap entered promiscuous mode [ 53.666652][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.674643][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.682931][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.691031][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.699777][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.711980][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.722002][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.731310][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.740020][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.749165][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.760329][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.769537][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.826953][ T54] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.846867][ T54] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.855562][ T1086] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.857142][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.864118][ T1086] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.882449][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/16 23:52:42 building call list... [ 54.022334][ T25] Bluetooth: hci0: command 0x0409 tx timeout [ 56.169975][ T3590] can: request_module (can-proto-0) failed. [ 56.193788][ T3590] can: request_module (can-proto-0) failed. [ 56.214151][ T3590] can: request_module (can-proto-0) failed. executing program