DUID 00:04:ac:d3:e9:6f:d6:cf:30:00:cb:75:86:98:6a:d5:8e:9b forked to background, child pid 3173 [ 31.800394][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.811228][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. 2022/02/15 18:29:04 fuzzer started 2022/02/15 18:29:04 connecting to host at 10.128.0.169:36923 2022/02/15 18:29:04 checking machine... 2022/02/15 18:29:04 checking revisions... 2022/02/15 18:29:04 testing simple program... syzkaller login: [ 50.553734][ T3595] cgroup: Unknown subsys name 'net' [ 50.665849][ T3595] cgroup: Unknown subsys name 'rlimit' [ 51.877011][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.885612][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.893830][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.902200][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.910277][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.918692][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.045109][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 52.115551][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.130118][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.138155][ T3597] device bridge_slave_0 entered promiscuous mode [ 52.147367][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.154788][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.163117][ T3597] device bridge_slave_1 entered promiscuous mode [ 52.187855][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.199209][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.223236][ T3597] team0: Port device team_slave_0 added [ 52.231924][ T3597] team0: Port device team_slave_1 added [ 52.250336][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.257324][ 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. [ 52.285149][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.298388][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.305445][ 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. [ 52.331869][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.357157][ T3597] [ 52.359911][ T3597] ============================= [ 52.364815][ T3597] WARNING: suspicious RCU usage [ 52.369903][ T3597] 5.17.0-rc2-syzkaller-00961-g8cbf062a250e #0 Not tainted [ 52.377315][ T3597] ----------------------------- [ 52.382211][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.391048][ T3597] [ 52.391048][ T3597] other info that might help us debug this: [ 52.391048][ T3597] [ 52.401595][ T3597] [ 52.401595][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 52.409804][ T3597] 2 locks held by syz-executor.0/3597: [ 52.415348][ T3597] #0: ffffffff8d32cae8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.425008][ T3597] #1: ffff88801d0055f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.435339][ T3597] [ 52.435339][ T3597] stack backtrace: [ 52.441563][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00961-g8cbf062a250e #0 [ 52.452175][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.462252][ T3597] Call Trace: [ 52.465553][ T3597] [ 52.468497][ T3597] dump_stack_lvl+0xcd/0x134 [ 52.473379][ T3597] hsr_node_get_first+0x9b/0xb0 [ 52.478338][ T3597] hsr_create_self_node+0x22d/0x650 [ 52.483570][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 52.488441][ T3597] hsr_newlink+0x315/0x730 [ 52.493571][ T3597] ? hsr_dellink+0x130/0x130 [ 52.498172][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 52.503449][ T3597] ? hsr_dellink+0x130/0x130 [ 52.508074][ T3597] __rtnl_newlink+0x107c/0x1760 [ 52.513170][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 52.517880][ T3597] ? is_bpf_text_address+0x77/0x170 [ 52.523204][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.528081][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 52.534013][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.540177][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.545941][ T3597] ? is_bpf_text_address+0x99/0x170 [ 52.551164][ T3597] ? kernel_text_address+0x39/0x80 [ 52.556488][ T3597] ? __kernel_text_address+0x9/0x30 [ 52.561910][ T3597] ? unwind_get_return_address+0x51/0x90 [ 52.567642][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 52.573482][ T3597] ? arch_stack_walk+0x93/0xe0 [ 52.578500][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.584154][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.589728][ T3597] rtnl_newlink+0x64/0xa0 [ 52.594081][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 52.599232][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 52.604209][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.609031][ T3597] netlink_rcv_skb+0x153/0x420 [ 52.613817][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.618443][ T3597] ? netlink_ack+0xa60/0xa60 [ 52.623039][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.628336][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.633635][ T3597] netlink_unicast+0x539/0x7e0 [ 52.638431][ T3597] ? netlink_attachskb+0x880/0x880 [ 52.643650][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.650078][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.656417][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 52.661446][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.667696][ T3597] ? __check_object_size+0x16e/0x310 [ 52.673075][ T3597] netlink_sendmsg+0x904/0xe00 [ 52.677848][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.682802][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.689057][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.694087][ T3597] sock_sendmsg+0xcf/0x120 [ 52.698506][ T3597] __sys_sendto+0x21c/0x320 [ 52.703013][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.708471][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.715309][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 52.721102][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.726134][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.731478][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 52.736337][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 52.742806][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.749011][ T3597] do_syscall_64+0x35/0xb0 [ 52.753796][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.759847][ T3597] RIP: 0033:0x7fd6f21fce1c [ 52.764304][ 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 [ 52.784689][ T3597] RSP: 002b:00007ffc12d62830 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.793220][ T3597] RAX: ffffffffffffffda RBX: 00007fd6f3295320 RCX: 00007fd6f21fce1c [ 52.801384][ T3597] RDX: 0000000000000048 RSI: 00007fd6f3295370 RDI: 0000000000000003 [ 52.809451][ T3597] RBP: 0000000000000000 R08: 00007ffc12d62884 R09: 000000000000000c [ 52.817422][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.825497][ T3597] R13: 00007fd6f3295370 R14: 0000000000000003 R15: 0000000000000000 [ 52.833507][ T3597] [ 52.844238][ T3597] device hsr_slave_0 entered promiscuous mode [ 52.851242][ T3597] device hsr_slave_1 entered promiscuous mode [ 52.934728][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.945967][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.955968][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.965340][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.986779][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.993981][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.002052][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.009285][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.054722][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.068034][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.079083][ T3259] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.087678][ T3259] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.098131][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.112996][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.122749][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.131975][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.140658][ T25] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.147897][ T25] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.161077][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.169775][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.178426][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.185634][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.199111][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.219099][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.229071][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.238281][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.247123][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.256555][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.265373][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.273960][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.283055][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.291749][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.300672][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 53.313507][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.330993][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.339350][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.351570][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.460136][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.469123][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.485623][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.494662][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.504171][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.512628][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.521889][ T3597] device veth0_vlan entered promiscuous mode [ 53.533425][ T3597] device veth1_vlan entered promiscuous mode [ 53.550800][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.559490][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.567676][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.576577][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.587925][ T3597] device veth0_macvtap entered promiscuous mode [ 53.599347][ T3597] device veth1_macvtap entered promiscuous mode [ 53.615883][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.623961][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.633011][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.641928][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.651257][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.664272][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.672027][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.680814][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.693180][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.702307][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.711861][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.721571][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.782810][ T49] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.792512][ T49] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.812284][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.821563][ T49] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.830227][ T49] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.840008][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/15 18:29:08 building call list... [ 53.949828][ T3610] Bluetooth: hci0: command 0x0409 tx timeout [ 56.133655][ T3593] can: request_module (can-proto-0) failed. [ 56.158006][ T3593] can: request_module (can-proto-0) failed. [ 56.180230][ T3593] can: request_module (can-proto-0) failed. executing program [ 56.574493][ T3597] syz-executor.0 (3597) used greatest stack depth: 22592 bytes left [ 56.609661][ T990] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0