DUID 00:04:ac:d3:e9:6f:d6:cf:30:00:cb:75:86:98:6a:d5:8e:9b forked to background, child pid 3174 [ 29.927206][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.938215][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.114' (ECDSA) to the list of known hosts. 2022/02/23 23:25:38 fuzzer started 2022/02/23 23:25:38 connecting to host at 10.128.0.169:45639 2022/02/23 23:25:38 checking machine... 2022/02/23 23:25:38 checking revisions... 2022/02/23 23:25:39 testing simple program... syzkaller login: [ 46.351822][ T3595] cgroup: Unknown subsys name 'net' [ 46.496330][ T3595] cgroup: Unknown subsys name 'rlimit' [ 47.750608][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 47.759418][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 47.767275][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 47.775625][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 47.783254][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 47.790925][ T3602] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 47.894164][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 47.943246][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.952312][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.961709][ T3597] device bridge_slave_0 entered promiscuous mode [ 47.972669][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.980170][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.989187][ T3597] device bridge_slave_1 entered promiscuous mode [ 48.011242][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.023330][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.048731][ T3597] team0: Port device team_slave_0 added [ 48.056826][ T3597] team0: Port device team_slave_1 added [ 48.076507][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.083985][ 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. [ 48.112428][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.125417][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.132503][ 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. [ 48.158585][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.183670][ T3597] [ 48.186123][ T3597] ============================= [ 48.190998][ T3597] WARNING: suspicious RCU usage [ 48.195842][ T3597] 5.17.0-rc4-syzkaller-01357-g08894d9c647a #0 Not tainted [ 48.202976][ T3597] ----------------------------- [ 48.207817][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.215997][ T3597] [ 48.215997][ T3597] other info that might help us debug this: [ 48.215997][ T3597] [ 48.226372][ T3597] [ 48.226372][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 48.234504][ T3597] 2 locks held by syz-executor.0/3597: [ 48.240020][ T3597] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.249824][ T3597] #1: ffff88801c9955f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.260001][ T3597] [ 48.260001][ T3597] stack backtrace: [ 48.266132][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01357-g08894d9c647a #0 [ 48.276546][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.286950][ T3597] Call Trace: [ 48.290234][ T3597] [ 48.293158][ T3597] dump_stack_lvl+0xcd/0x134 [ 48.297791][ T3597] hsr_node_get_first+0x9b/0xb0 [ 48.302700][ T3597] hsr_create_self_node+0x22d/0x650 [ 48.308184][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 48.313251][ T3597] hsr_newlink+0x315/0x730 [ 48.317928][ T3597] ? hsr_dellink+0x130/0x130 [ 48.322524][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 48.327556][ T3597] ? hsr_dellink+0x130/0x130 [ 48.332135][ T3597] __rtnl_newlink+0x107c/0x1760 [ 48.336983][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 48.341656][ T3597] ? is_bpf_text_address+0x77/0x170 [ 48.346949][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 48.351866][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 48.357431][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.363926][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 48.369748][ T3597] ? is_bpf_text_address+0x99/0x170 [ 48.374980][ T3597] ? kernel_text_address+0x39/0x80 [ 48.380091][ T3597] ? __kernel_text_address+0x9/0x30 [ 48.385284][ T3597] ? unwind_get_return_address+0x51/0x90 [ 48.390916][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 48.396127][ T3597] ? arch_stack_walk+0x93/0xe0 [ 48.401013][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 48.406496][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 48.412047][ T3597] rtnl_newlink+0x64/0xa0 [ 48.416460][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 48.421501][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 48.426450][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 48.431218][ T3597] netlink_rcv_skb+0x153/0x420 [ 48.435998][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 48.440758][ T3597] ? netlink_ack+0xa60/0xa60 [ 48.445348][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 48.450641][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 48.455923][ T3597] netlink_unicast+0x539/0x7e0 [ 48.460706][ T3597] ? netlink_attachskb+0x880/0x880 [ 48.465819][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.472222][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.478598][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 48.484673][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 48.490389][ T3597] ? __check_object_size+0x16e/0x310 [ 48.495755][ T3597] netlink_sendmsg+0x904/0xe00 [ 48.500529][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 48.505467][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.511795][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 48.516723][ T3597] sock_sendmsg+0xcf/0x120 [ 48.521302][ T3597] __sys_sendto+0x21c/0x320 [ 48.525877][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 48.531231][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 48.536433][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 48.541881][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 48.546815][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 48.551570][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 48.556772][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 48.563092][ T3597] do_syscall_64+0x35/0xb0 [ 48.567496][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.573547][ T3597] RIP: 0033:0x7f8eaf5eae1c [ 48.577959][ 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 [ 48.598072][ T3597] RSP: 002b:00007ffe88f33c90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 48.606662][ T3597] RAX: ffffffffffffffda RBX: 00007f8eb0683320 RCX: 00007f8eaf5eae1c [ 48.614634][ T3597] RDX: 0000000000000048 RSI: 00007f8eb0683370 RDI: 0000000000000003 [ 48.622592][ T3597] RBP: 0000000000000000 R08: 00007ffe88f33ce4 R09: 000000000000000c [ 48.630635][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 48.638766][ T3597] R13: 00007f8eb0683370 R14: 0000000000000003 R15: 0000000000000000 [ 48.646739][ T3597] [ 48.654162][ T3597] device hsr_slave_0 entered promiscuous mode [ 48.662115][ T3597] device hsr_slave_1 entered promiscuous mode [ 48.744896][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 48.755984][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 48.765081][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 48.774991][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 48.797183][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.804533][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.812767][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.819872][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.866239][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.879940][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.891576][ T141] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.900622][ T141] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.911156][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.924792][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.934129][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.943576][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.952739][ T35] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.959912][ T35] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.979773][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.988657][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.997272][ T35] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.005083][ T35] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.013345][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.022643][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.031858][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.040905][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.049401][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.058201][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.070346][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.084915][ T3597] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 49.096214][ T3597] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.111739][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.120831][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 49.131202][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.140241][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.150398][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.177894][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 49.186055][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.195051][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.310463][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.320138][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.340876][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 49.349892][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.358584][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.366614][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.379185][ T3597] device veth0_vlan entered promiscuous mode [ 49.391138][ T3597] device veth1_vlan entered promiscuous mode [ 49.414019][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.422587][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.432038][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 49.441043][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.454914][ T3597] device veth0_macvtap entered promiscuous mode [ 49.464417][ T3597] device veth1_macvtap entered promiscuous mode [ 49.480363][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.487945][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.497957][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 49.506594][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 49.516024][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.530370][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.538594][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 49.547306][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.559439][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.568952][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.577691][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.587149][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.653924][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.670382][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.683897][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.694119][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.703017][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.713525][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/23 23:25:42 building call list... [ 49.820972][ T3608] Bluetooth: hci0: command 0x0409 tx timeout [ 49.995472][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 52.133411][ T3594] can: request_module (can-proto-0) failed. [ 52.158727][ T3594] can: request_module (can-proto-0) failed. [ 52.180162][ T3594] can: request_module (can-proto-0) failed. [ 52.766705][ T3597] syz-executor.0 (3597) used greatest stack depth: 22424 bytes left [ 52.912581][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0