DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 3171 [ 33.149312][ T3172] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.161057][ T3172] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. 2022/02/08 13:48:35 fuzzer started 2022/02/08 13:48:35 connecting to host at 10.128.0.169:33677 2022/02/08 13:48:35 checking machine... 2022/02/08 13:48:35 checking revisions... 2022/02/08 13:48:35 testing simple program... syzkaller login: [ 52.095043][ T3593] cgroup: Unknown subsys name 'net' [ 52.211899][ T3593] cgroup: Unknown subsys name 'rlimit' [ 53.447417][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 53.456148][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 53.464511][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 53.472850][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 53.481175][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 53.488897][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 53.583848][ T3595] chnl_net:caif_netlink_parms(): no params data found [ 53.662755][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.670724][ T3595] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.679387][ T3595] device bridge_slave_0 entered promiscuous mode [ 53.689000][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.696379][ T3595] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.705063][ T3595] device bridge_slave_1 entered promiscuous mode [ 53.728431][ T3595] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.739972][ T3595] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.763574][ T3595] team0: Port device team_slave_0 added [ 53.771516][ T3595] team0: Port device team_slave_1 added [ 53.789909][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.797409][ T3595] 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. [ 53.823798][ T3595] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.836887][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.843932][ T3595] 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. [ 53.870263][ T3595] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.896129][ T3595] [ 53.898604][ T3595] ============================= [ 53.903431][ T3595] WARNING: suspicious RCU usage [ 53.908318][ T3595] 5.17.0-rc3-next-20220208-syzkaller #0 Not tainted [ 53.914948][ T3595] ----------------------------- [ 53.919792][ T3595] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.928014][ T3595] [ 53.928014][ T3595] other info that might help us debug this: [ 53.928014][ T3595] [ 53.938285][ T3595] [ 53.938285][ T3595] rcu_scheduler_active = 2, debug_locks = 1 [ 53.946496][ T3595] 2 locks held by syz-executor.0/3595: [ 53.952057][ T3595] #0: ffffffff8d3357e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.961614][ T3595] #1: ffff888077aa95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.971763][ T3595] [ 53.971763][ T3595] stack backtrace: [ 53.977789][ T3595] CPU: 1 PID: 3595 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220208-syzkaller #0 [ 53.987685][ T3595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.998268][ T3595] Call Trace: [ 54.001585][ T3595] [ 54.004554][ T3595] dump_stack_lvl+0xcd/0x134 [ 54.009174][ T3595] hsr_node_get_first+0x9b/0xb0 [ 54.014034][ T3595] hsr_create_self_node+0x22d/0x650 [ 54.019265][ T3595] hsr_dev_finalize+0x2c1/0x7d0 [ 54.024146][ T3595] hsr_newlink+0x315/0x730 [ 54.028594][ T3595] ? hsr_dellink+0x130/0x130 [ 54.033197][ T3595] ? rtnl_create_link+0x7e8/0xc00 [ 54.038244][ T3595] ? hsr_dellink+0x130/0x130 [ 54.042957][ T3595] __rtnl_newlink+0x107c/0x1760 [ 54.047857][ T3595] ? rtnl_setlink+0x3c0/0x3c0 [ 54.052640][ T3595] ? is_bpf_text_address+0x77/0x170 [ 54.057873][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 54.062733][ T3595] ? unwind_next_frame+0xee1/0x1ce0 [ 54.068195][ T3595] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.074434][ T3595] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 54.080165][ T3595] ? is_bpf_text_address+0x99/0x170 [ 54.085371][ T3595] ? kernel_text_address+0x39/0x80 [ 54.090485][ T3595] ? __kernel_text_address+0x9/0x30 [ 54.095679][ T3595] ? unwind_get_return_address+0x51/0x90 [ 54.101305][ T3595] ? create_prof_cpu_mask+0x20/0x20 [ 54.106512][ T3595] ? arch_stack_walk+0x93/0xe0 [ 54.111348][ T3595] ? rcu_read_lock_sched_held+0x3a/0x70 [ 54.116912][ T3595] rtnl_newlink+0x64/0xa0 [ 54.121244][ T3595] ? __rtnl_newlink+0x1760/0x1760 [ 54.126266][ T3595] rtnetlink_rcv_msg+0x413/0xb80 [ 54.131206][ T3595] ? rtnl_newlink+0xa0/0xa0 [ 54.135749][ T3595] netlink_rcv_skb+0x153/0x420 [ 54.140513][ T3595] ? rtnl_newlink+0xa0/0xa0 [ 54.145017][ T3595] ? netlink_ack+0xa80/0xa80 [ 54.149603][ T3595] ? netlink_deliver_tap+0x1a2/0xc40 [ 54.154889][ T3595] ? netlink_deliver_tap+0x1b1/0xc40 [ 54.160178][ T3595] netlink_unicast+0x539/0x7e0 [ 54.164946][ T3595] ? netlink_attachskb+0x880/0x880 [ 54.170054][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.176317][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.182570][ T3595] ? __phys_addr_symbol+0x2c/0x70 [ 54.187597][ T3595] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 54.193321][ T3595] ? __check_object_size+0x16c/0x4f0 [ 54.198697][ T3595] netlink_sendmsg+0x904/0xe00 [ 54.203485][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 54.208772][ T3595] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 54.215458][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 54.220395][ T3595] sock_sendmsg+0xcf/0x120 [ 54.224991][ T3595] __sys_sendto+0x21c/0x320 [ 54.229497][ T3595] ? __ia32_sys_getpeername+0xb0/0xb0 [ 54.234889][ T3595] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 54.240980][ T3595] ? __context_tracking_exit+0xb8/0xe0 [ 54.246790][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 54.251641][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 54.256507][ T3595] __x64_sys_sendto+0xdd/0x1b0 [ 54.261277][ T3595] ? lockdep_hardirqs_on+0x79/0x100 [ 54.266481][ T3595] ? syscall_enter_from_user_mode+0x21/0x70 [ 54.272379][ T3595] do_syscall_64+0x35/0xb0 [ 54.276795][ T3595] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.282691][ T3595] RIP: 0033:0x7fd00f16ce1c [ 54.287105][ T3595] 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 [ 54.306705][ T3595] RSP: 002b:00007ffe9119d910 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.315124][ T3595] RAX: ffffffffffffffda RBX: 00007fd010205320 RCX: 00007fd00f16ce1c [ 54.323093][ T3595] RDX: 0000000000000048 RSI: 00007fd010205370 RDI: 0000000000000003 [ 54.331147][ T3595] RBP: 0000000000000000 R08: 00007ffe9119d964 R09: 000000000000000c [ 54.339111][ T3595] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.347170][ T3595] R13: 00007fd010205370 R14: 0000000000000003 R15: 0000000000000000 [ 54.355363][ T3595] [ 54.368963][ T3595] device hsr_slave_0 entered promiscuous mode [ 54.376154][ T3595] device hsr_slave_1 entered promiscuous mode [ 54.463205][ T3595] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.475758][ T3595] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.485259][ T3595] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.495381][ T3595] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.518587][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.525823][ T3595] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.534070][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.541267][ T3595] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.593063][ T3595] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.606603][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.618333][ T3605] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.628117][ T3605] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.636983][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.651446][ T3595] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.663046][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.672657][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.681421][ T3605] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.688533][ T3605] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.705029][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.714652][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.723094][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.730326][ T3605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.738441][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.747246][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.769855][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.780154][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.788880][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.798129][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.807114][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.817149][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.825691][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.834482][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.845388][ T3595] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.853777][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.879380][ T3595] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 54.889833][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.898479][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.014263][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 55.025180][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.043226][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 55.053091][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.063961][ T3595] device veth0_vlan entered promiscuous mode [ 55.074903][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.082860][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.092063][ T3595] device veth1_vlan entered promiscuous mode [ 55.113894][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.121914][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.131396][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.140766][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.151224][ T3595] device veth0_macvtap entered promiscuous mode [ 55.162726][ T3595] device veth1_macvtap entered promiscuous mode [ 55.178356][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.187421][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.196630][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 55.206054][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 55.215033][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.227511][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.237011][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 55.246160][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 55.258262][ T3595] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.267593][ T3595] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.276373][ T3595] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.286528][ T3595] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.350855][ T1320] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.361779][ T1320] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.372524][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.391987][ T91] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.400661][ T91] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.410464][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/08 13:48:39 building call list... [ 55.585521][ T3605] Bluetooth: hci0: command 0x0409 tx timeout [ 57.711195][ T3584] can: request_module (can-proto-0) failed. [ 57.736188][ T3584] can: request_module (can-proto-0) failed. [ 57.758521][ T3584] can: request_module (can-proto-0) failed. executing program [ 57.923783][ T3595] syz-executor.0 (3595) used greatest stack depth: 22584 bytes left [ 57.951223][ T1320] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0