DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3173 [ 28.888919][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.906651][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.109' (ECDSA) to the list of known hosts. 2022/02/17 00:01:03 fuzzer started 2022/02/17 00:01:03 connecting to host at 10.128.0.169:46179 2022/02/17 00:01:03 checking machine... 2022/02/17 00:01:03 checking revisions... 2022/02/17 00:01:03 testing simple program... syzkaller login: [ 51.612288][ T3594] cgroup: Unknown subsys name 'net' [ 51.742346][ T3594] cgroup: Unknown subsys name 'rlimit' [ 52.936202][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.944404][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.952237][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.960109][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.968295][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.976075][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 53.066529][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 53.111189][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.118765][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.126823][ T3597] device bridge_slave_0 entered promiscuous mode [ 53.135900][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.143067][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.150996][ T3597] device bridge_slave_1 entered promiscuous mode [ 53.174975][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.189409][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.212884][ T3597] team0: Port device team_slave_0 added [ 53.220290][ T3597] team0: Port device team_slave_1 added [ 53.237743][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.244691][ 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. [ 53.271417][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.286408][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.293372][ 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. [ 53.319755][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.343523][ T3597] [ 53.345994][ T3597] ============================= [ 53.350968][ T3597] WARNING: suspicious RCU usage [ 53.355928][ T3597] 5.17.0-rc2-syzkaller-00970-gf76d8507d238 #0 Not tainted [ 53.363389][ T3597] ----------------------------- [ 53.368347][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.376552][ T3597] [ 53.376552][ T3597] other info that might help us debug this: [ 53.376552][ T3597] [ 53.387058][ T3597] [ 53.387058][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 53.395121][ T3597] 2 locks held by syz-executor.0/3597: [ 53.400658][ T3597] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.410211][ T3597] #1: ffff88807af495f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.420369][ T3597] [ 53.420369][ T3597] stack backtrace: [ 53.426292][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00970-gf76d8507d238 #0 [ 53.436910][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.447381][ T3597] Call Trace: [ 53.450643][ T3597] [ 53.453569][ T3597] dump_stack_lvl+0xcd/0x134 [ 53.458246][ T3597] hsr_node_get_first+0x9b/0xb0 [ 53.463175][ T3597] hsr_create_self_node+0x22d/0x650 [ 53.468364][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 53.473206][ T3597] hsr_newlink+0x315/0x730 [ 53.477623][ T3597] ? hsr_dellink+0x130/0x130 [ 53.482298][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 53.487310][ T3597] ? hsr_dellink+0x130/0x130 [ 53.491986][ T3597] __rtnl_newlink+0x107c/0x1760 [ 53.496861][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 53.501530][ T3597] ? is_bpf_text_address+0x77/0x170 [ 53.506804][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.511647][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 53.516829][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.522880][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.528682][ T3597] ? is_bpf_text_address+0x99/0x170 [ 53.533869][ T3597] ? kernel_text_address+0x39/0x80 [ 53.539057][ T3597] ? __kernel_text_address+0x9/0x30 [ 53.544268][ T3597] ? unwind_get_return_address+0x51/0x90 [ 53.549989][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 53.555183][ T3597] ? arch_stack_walk+0x93/0xe0 [ 53.559981][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.565441][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.570977][ T3597] rtnl_newlink+0x64/0xa0 [ 53.575312][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 53.580323][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 53.585349][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.589858][ T3597] netlink_rcv_skb+0x153/0x420 [ 53.594609][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.599113][ T3597] ? netlink_ack+0xa60/0xa60 [ 53.603697][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.608970][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.614346][ T3597] netlink_unicast+0x539/0x7e0 [ 53.619097][ T3597] ? netlink_attachskb+0x880/0x880 [ 53.624192][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.630532][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.636863][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 53.641959][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.647664][ T3597] ? __check_object_size+0x16e/0x310 [ 53.652937][ T3597] netlink_sendmsg+0x904/0xe00 [ 53.657703][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.662645][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.668962][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.673895][ T3597] sock_sendmsg+0xcf/0x120 [ 53.678447][ T3597] __sys_sendto+0x21c/0x320 [ 53.682942][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.688323][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.694405][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 53.700045][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.704934][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.710014][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 53.714886][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 53.720091][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.725972][ T3597] do_syscall_64+0x35/0xb0 [ 53.730418][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.736298][ T3597] RIP: 0033:0x7fc4d21f8e1c [ 53.740879][ 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 [ 53.760644][ T3597] RSP: 002b:00007ffd01884140 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.769048][ T3597] RAX: ffffffffffffffda RBX: 00007fc4d3291320 RCX: 00007fc4d21f8e1c [ 53.777118][ T3597] RDX: 0000000000000048 RSI: 00007fc4d3291370 RDI: 0000000000000003 [ 53.785171][ T3597] RBP: 0000000000000000 R08: 00007ffd01884194 R09: 000000000000000c [ 53.793314][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.801356][ T3597] R13: 00007fc4d3291370 R14: 0000000000000003 R15: 0000000000000000 [ 53.809409][ T3597] [ 53.820380][ T3597] device hsr_slave_0 entered promiscuous mode [ 53.827773][ T3597] device hsr_slave_1 entered promiscuous mode [ 53.908310][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.920242][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.929767][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.939478][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.959852][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.967068][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.975042][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.982235][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.029540][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.042184][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.052422][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.061752][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.070164][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.084218][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.093775][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.103236][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.111866][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.119054][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.147116][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.156469][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.165281][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.172418][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.180508][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.189211][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.198097][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.207422][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.216247][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.224738][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.234516][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.246019][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.254434][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.263801][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.272222][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.284144][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.304167][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.313361][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.321509][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 54.427828][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.436849][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.451681][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.460334][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.469695][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.477929][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.487912][ T3597] device veth0_vlan entered promiscuous mode [ 54.498968][ T3597] device veth1_vlan entered promiscuous mode [ 54.517154][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.525530][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.534552][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.543363][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.554985][ T3597] device veth0_macvtap entered promiscuous mode [ 54.565173][ T3597] device veth1_macvtap entered promiscuous mode [ 54.580073][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.589652][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.597926][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.606962][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.615485][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.627491][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.634903][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.643720][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.655374][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.664723][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.673935][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.683317][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.747691][ T1006] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.766424][ T1006] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.778574][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.789963][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.798482][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.809026][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 00:01:06 building call list... [ 55.085758][ T1006] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.138187][ T3618] can: request_module (can-proto-0) failed. [ 57.159879][ T3618] can: request_module (can-proto-0) failed. [ 57.181273][ T3618] can: request_module (can-proto-0) failed. executing program [ 57.717945][ T1006] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0