DUID 00:04:00:dd:10:da:7f:85:b5:90:fb:fd:97:ac:66:d6:08:36 forked to background, child pid 3173 [ 31.432657][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.449024][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. 2022/02/17 11:34:17 fuzzer started 2022/02/17 11:34:17 connecting to host at 10.128.0.169:42287 2022/02/17 11:34:17 checking machine... 2022/02/17 11:34:17 checking revisions... 2022/02/17 11:34:17 testing simple program... syzkaller login: [ 47.720844][ T3594] cgroup: Unknown subsys name 'net' [ 47.849697][ T3594] cgroup: Unknown subsys name 'rlimit' [ 49.034879][ T3597] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.043048][ T3597] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.051091][ T3597] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.059353][ T3597] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.067225][ T3597] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.074739][ T3597] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 49.166583][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 49.209448][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.217216][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.225796][ T3596] device bridge_slave_0 entered promiscuous mode [ 49.235394][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.243109][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.251414][ T3596] device bridge_slave_1 entered promiscuous mode [ 49.274539][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 49.286285][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 49.309561][ T3596] team0: Port device team_slave_0 added [ 49.317749][ T3596] team0: Port device team_slave_1 added [ 49.335584][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.342535][ T3596] 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. [ 49.369401][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.382626][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.389928][ T3596] 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. [ 49.416414][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 49.440540][ T3596] [ 49.443065][ T3596] ============================= [ 49.447937][ T3596] WARNING: suspicious RCU usage [ 49.452854][ T3596] 5.17.0-rc3-syzkaller-01223-gc8b441d2fbd0 #0 Not tainted [ 49.460024][ T3596] ----------------------------- [ 49.465038][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 49.473190][ T3596] [ 49.473190][ T3596] other info that might help us debug this: [ 49.473190][ T3596] [ 49.483955][ T3596] [ 49.483955][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 49.492084][ T3596] 2 locks held by syz-executor.0/3596: [ 49.497604][ T3596] #0: ffffffff8d32cb28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 49.507095][ T3596] #1: ffff88807eb0d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 49.517341][ T3596] [ 49.517341][ T3596] stack backtrace: [ 49.523257][ T3596] CPU: 1 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01223-gc8b441d2fbd0 #0 [ 49.533704][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.543746][ T3596] Call Trace: [ 49.547122][ T3596] [ 49.550041][ T3596] dump_stack_lvl+0xcd/0x134 [ 49.554627][ T3596] hsr_node_get_first+0x9b/0xb0 [ 49.559603][ T3596] hsr_create_self_node+0x22d/0x650 [ 49.564812][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 49.569857][ T3596] hsr_newlink+0x315/0x730 [ 49.574367][ T3596] ? hsr_dellink+0x130/0x130 [ 49.579927][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 49.584957][ T3596] ? hsr_dellink+0x130/0x130 [ 49.589731][ T3596] __rtnl_newlink+0x107c/0x1760 [ 49.594582][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 49.599345][ T3596] ? is_bpf_text_address+0x77/0x170 [ 49.604595][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.609462][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 49.614777][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.620962][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.626751][ T3596] ? is_bpf_text_address+0x99/0x170 [ 49.632006][ T3596] ? kernel_text_address+0x39/0x80 [ 49.637249][ T3596] ? __kernel_text_address+0x9/0x30 [ 49.642458][ T3596] ? unwind_get_return_address+0x51/0x90 [ 49.648093][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 49.653296][ T3596] ? arch_stack_walk+0x93/0xe0 [ 49.658151][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.663739][ T3596] rtnl_newlink+0x64/0xa0 [ 49.668076][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 49.673112][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 49.678067][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 49.682610][ T3596] netlink_rcv_skb+0x153/0x420 [ 49.687608][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 49.692132][ T3596] ? netlink_ack+0xa60/0xa60 [ 49.696729][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.702032][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.707336][ T3596] netlink_unicast+0x539/0x7e0 [ 49.712126][ T3596] ? netlink_attachskb+0x880/0x880 [ 49.717361][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.723706][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.730045][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 49.735083][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 49.740836][ T3596] ? __check_object_size+0x16e/0x310 [ 49.746142][ T3596] netlink_sendmsg+0x904/0xe00 [ 49.750922][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 49.755895][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.762152][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 49.767092][ T3596] sock_sendmsg+0xcf/0x120 [ 49.771533][ T3596] __sys_sendto+0x21c/0x320 [ 49.776136][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 49.781509][ T3596] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.787527][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 49.793002][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.797867][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.802986][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 49.807800][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 49.813216][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.819134][ T3596] do_syscall_64+0x35/0xb0 [ 49.823573][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.829481][ T3596] RIP: 0033:0x7f5dbde5ee1c [ 49.833923][ T3596] 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 [ 49.853709][ T3596] RSP: 002b:00007fffa48a54c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 49.862142][ T3596] RAX: ffffffffffffffda RBX: 00007f5dbeef7320 RCX: 00007f5dbde5ee1c [ 49.870247][ T3596] RDX: 0000000000000048 RSI: 00007f5dbeef7370 RDI: 0000000000000003 [ 49.878226][ T3596] RBP: 0000000000000000 R08: 00007fffa48a5514 R09: 000000000000000c [ 49.886338][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 49.894410][ T3596] R13: 00007f5dbeef7370 R14: 0000000000000003 R15: 0000000000000000 [ 49.902493][ T3596] [ 49.912036][ T3596] device hsr_slave_0 entered promiscuous mode [ 49.919597][ T3596] device hsr_slave_1 entered promiscuous mode [ 50.002452][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.014973][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.025237][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.035226][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.057081][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.064276][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.072314][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.079436][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.125499][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.138883][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.149278][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.158701][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.166970][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.179886][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.193463][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 50.202318][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.211283][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.218412][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.227409][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 50.236692][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.245414][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.252607][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.263571][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 50.283862][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 50.293877][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 50.302930][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.311987][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.320568][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.329189][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.337689][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.346246][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.355010][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.363285][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.373886][ T3596] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.391557][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.399447][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.411692][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 50.563468][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.572097][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.587023][ T3596] device veth0_vlan entered promiscuous mode [ 50.593973][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.602753][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.617058][ T3596] device veth1_vlan entered promiscuous mode [ 50.624851][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.632505][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.640794][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.660145][ T3596] device veth0_macvtap entered promiscuous mode [ 50.670102][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.678823][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.688002][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.699811][ T3596] device veth1_macvtap entered promiscuous mode [ 50.708421][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.717261][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.732060][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.741147][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.750694][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.761578][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.770709][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.780033][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.790877][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.800328][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.810084][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.819464][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.878943][ T90] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.898630][ T90] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.908037][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.910214][ T918] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 50.924852][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.933989][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 11:34:21 building call list... [ 51.187692][ T90] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.231483][ T3588] can: request_module (can-proto-0) failed. [ 53.255788][ T3588] can: request_module (can-proto-0) failed. [ 53.278377][ T3588] can: request_module (can-proto-0) failed. executing program [ 53.484624][ T90] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.690422][ T3596] syz-executor.0 (3596) used greatest stack depth: 22400 bytes left