forked to background, child pid 3173 [ 30.175572][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.187089][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices [ 30.378396][ T3258] ssh-keygen (3258) used greatest stack depth: 22912 bytes left Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.45' (ECDSA) to the list of known hosts. 2022/02/10 14:56:34 fuzzer started 2022/02/10 14:56:35 connecting to host at 10.128.0.169:37299 2022/02/10 14:56:35 checking machine... 2022/02/10 14:56:35 checking revisions... 2022/02/10 14:56:35 testing simple program... syzkaller login: [ 51.826238][ T3595] cgroup: Unknown subsys name 'net' [ 51.970222][ T3595] cgroup: Unknown subsys name 'rlimit' [ 53.180749][ T3600] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 53.189258][ T3600] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 53.197285][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 53.207886][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 53.218201][ T3600] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 53.226332][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 53.316050][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 53.358969][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.366642][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.374879][ T3597] device bridge_slave_0 entered promiscuous mode [ 53.384649][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.392170][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.400242][ T3597] device bridge_slave_1 entered promiscuous mode [ 53.421032][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.432266][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.455052][ T3597] team0: Port device team_slave_0 added [ 53.462285][ T3597] team0: Port device team_slave_1 added [ 53.480751][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.488720][ 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. [ 53.516194][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.529472][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.538344][ 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. [ 53.565629][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.590475][ T3597] [ 53.592912][ T3597] ============================= [ 53.597810][ T3597] WARNING: suspicious RCU usage [ 53.602668][ T3597] 5.17.0-rc2-syzkaller-00887-g1127170d457e #0 Not tainted [ 53.609910][ T3597] ----------------------------- [ 53.614925][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.623195][ T3597] [ 53.623195][ T3597] other info that might help us debug this: [ 53.623195][ T3597] [ 53.633528][ T3597] [ 53.633528][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 53.641696][ T3597] 2 locks held by syz-executor.0/3597: [ 53.647210][ T3597] #0: ffffffff8d32ca28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.656969][ T3597] #1: ffff888076fe95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.667122][ T3597] [ 53.667122][ T3597] stack backtrace: [ 53.673016][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00887-g1127170d457e #0 [ 53.683855][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.695918][ T3597] Call Trace: [ 53.704593][ T3597] [ 53.708709][ T3597] dump_stack_lvl+0xcd/0x134 [ 53.713756][ T3597] hsr_node_get_first+0x9b/0xb0 [ 53.718632][ T3597] hsr_create_self_node+0x22d/0x650 [ 53.723827][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 53.728692][ T3597] hsr_newlink+0x315/0x730 [ 53.733105][ T3597] ? hsr_dellink+0x130/0x130 [ 53.737682][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 53.742699][ T3597] ? hsr_dellink+0x130/0x130 [ 53.747285][ T3597] __rtnl_newlink+0x107c/0x1760 [ 53.752134][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 53.756844][ T3597] ? is_bpf_text_address+0x77/0x170 [ 53.762034][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.766903][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 53.772103][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.778169][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.783898][ T3597] ? is_bpf_text_address+0x99/0x170 [ 53.789096][ T3597] ? kernel_text_address+0x39/0x80 [ 53.794355][ T3597] ? __kernel_text_address+0x9/0x30 [ 53.799912][ T3597] ? unwind_get_return_address+0x51/0x90 [ 53.805547][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 53.810848][ T3597] ? arch_stack_walk+0x93/0xe0 [ 53.815743][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.821319][ T3597] rtnl_newlink+0x64/0xa0 [ 53.825652][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 53.830680][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 53.835641][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.840142][ T3597] netlink_rcv_skb+0x153/0x420 [ 53.844899][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.849473][ T3597] ? netlink_ack+0xa60/0xa60 [ 53.854045][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.859327][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.864636][ T3597] netlink_unicast+0x539/0x7e0 [ 53.869650][ T3597] ? netlink_attachskb+0x880/0x880 [ 53.874748][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.881008][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.887245][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 53.893086][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.898809][ T3597] ? __check_object_size+0x16e/0x310 [ 53.904090][ T3597] netlink_sendmsg+0x904/0xe00 [ 53.908857][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.913790][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.920064][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.924989][ T3597] sock_sendmsg+0xcf/0x120 [ 53.929405][ T3597] __sys_sendto+0x21c/0x320 [ 53.933898][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.939441][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.945681][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 53.951268][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.956113][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.960960][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 53.965722][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 53.970914][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.976809][ T3597] do_syscall_64+0x35/0xb0 [ 53.981253][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.987148][ T3597] RIP: 0033:0x7f960d67de1c [ 53.992198][ 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 [ 54.011803][ T3597] RSP: 002b:00007ffd0078a560 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.020296][ T3597] RAX: ffffffffffffffda RBX: 00007f960e716320 RCX: 00007f960d67de1c [ 54.028380][ T3597] RDX: 0000000000000048 RSI: 00007f960e716370 RDI: 0000000000000003 [ 54.036349][ T3597] RBP: 0000000000000000 R08: 00007ffd0078a5b4 R09: 000000000000000c [ 54.044313][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.052276][ T3597] R13: 00007f960e716370 R14: 0000000000000003 R15: 0000000000000000 [ 54.060371][ T3597] [ 54.068933][ T3597] device hsr_slave_0 entered promiscuous mode [ 54.075932][ T3597] device hsr_slave_1 entered promiscuous mode [ 54.154873][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.165178][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.175584][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.185581][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.207212][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.214789][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.222612][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.230086][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.276654][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.289380][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.299894][ T919] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.308704][ T919] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.316717][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.330444][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.341330][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.352066][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.360916][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.368014][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.390669][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.400778][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.409793][ T919] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.417057][ T919] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.424986][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.434166][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.446467][ T1142] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.455509][ T1142] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.470313][ T3597] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 54.481085][ T3597] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.494658][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.502784][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.512012][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.521066][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.529954][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.540194][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.549407][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.558660][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.579754][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.587481][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 54.597998][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.713723][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.723130][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.735596][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.745029][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.755929][ T3597] device veth0_vlan entered promiscuous mode [ 54.764898][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.772961][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.785979][ T3597] device veth1_vlan entered promiscuous mode [ 54.803036][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.811767][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.820348][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.829067][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.839055][ T3597] device veth0_macvtap entered promiscuous mode [ 54.849225][ T3597] device veth1_macvtap entered promiscuous mode [ 54.864681][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.873759][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.882042][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.891010][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.899934][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.910766][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.919799][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.928931][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.941671][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.950697][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.959901][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.969116][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.030900][ T1096] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.040755][ T1096] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.053988][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.067203][ T54] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.075841][ T54] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.086122][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/10 14:56:38 building call list... [ 55.254879][ T1142] Bluetooth: hci0: command 0x0409 tx timeout [ 55.380581][ T1096] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.398013][ T3591] can: request_module (can-proto-0) failed. [ 57.421188][ T3591] can: request_module (can-proto-0) failed. [ 57.441930][ T3591] can: request_module (can-proto-0) failed. executing program