DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3172 [ 29.767582][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.776854][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.255' (ECDSA) to the list of known hosts. 2022/02/13 22:20:35 fuzzer started 2022/02/13 22:20:35 connecting to host at 10.128.0.169:37817 2022/02/13 22:20:35 checking machine... 2022/02/13 22:20:35 checking revisions... 2022/02/13 22:20:35 testing simple program... syzkaller login: [ 46.500383][ T3594] cgroup: Unknown subsys name 'net' [ 46.629264][ T3594] cgroup: Unknown subsys name 'rlimit' [ 47.843254][ T3597] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 47.851588][ T3597] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 47.859419][ T3597] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 47.867586][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 47.875253][ T3600] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 47.882930][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 47.966847][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 48.008515][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.016357][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.024739][ T3596] device bridge_slave_0 entered promiscuous mode [ 48.033870][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.041009][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.049579][ T3596] device bridge_slave_1 entered promiscuous mode [ 48.070597][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.081929][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.105227][ T3596] team0: Port device team_slave_0 added [ 48.112671][ T3596] team0: Port device team_slave_1 added [ 48.129372][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.136610][ 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. [ 48.163072][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.176202][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.183197][ 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. [ 48.210278][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.233549][ T3596] [ 48.235974][ T3596] ============================= [ 48.240888][ T3596] WARNING: suspicious RCU usage [ 48.246917][ T3596] 5.17.0-rc3-syzkaller-01129-g867b1db874c9 #0 Not tainted [ 48.254473][ T3596] ----------------------------- [ 48.259357][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.267560][ T3596] [ 48.267560][ T3596] other info that might help us debug this: [ 48.267560][ T3596] [ 48.278162][ T3596] [ 48.278162][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 48.286260][ T3596] 2 locks held by syz-executor.0/3596: [ 48.291968][ T3596] #0: ffffffff8d32cba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.301419][ T3596] #1: ffff8880797c95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.312068][ T3596] [ 48.312068][ T3596] stack backtrace: [ 48.318707][ T3596] CPU: 0 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01129-g867b1db874c9 #0 [ 48.329117][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.339603][ T3596] Call Trace: [ 48.342877][ T3596] [ 48.345798][ T3596] dump_stack_lvl+0xcd/0x134 [ 48.350400][ T3596] hsr_node_get_first+0x9b/0xb0 [ 48.355327][ T3596] hsr_create_self_node+0x22d/0x650 [ 48.360524][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 48.365582][ T3596] hsr_newlink+0x315/0x730 [ 48.370083][ T3596] ? hsr_dellink+0x130/0x130 [ 48.374755][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 48.379798][ T3596] ? hsr_dellink+0x130/0x130 [ 48.384407][ T3596] __rtnl_newlink+0x107c/0x1760 [ 48.389321][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 48.394141][ T3596] ? is_bpf_text_address+0x77/0x170 [ 48.399550][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 48.404414][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 48.409604][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.415757][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 48.421765][ T3596] ? is_bpf_text_address+0x99/0x170 [ 48.427053][ T3596] ? kernel_text_address+0x39/0x80 [ 48.432189][ T3596] ? __kernel_text_address+0x9/0x30 [ 48.437417][ T3596] ? unwind_get_return_address+0x51/0x90 [ 48.443258][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 48.448485][ T3596] ? arch_stack_walk+0x93/0xe0 [ 48.453282][ T3596] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 48.458830][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 48.464573][ T3596] rtnl_newlink+0x64/0xa0 [ 48.468925][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 48.473948][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 48.479074][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 48.483693][ T3596] netlink_rcv_skb+0x153/0x420 [ 48.488633][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 48.493286][ T3596] ? netlink_ack+0xa60/0xa60 [ 48.497897][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 48.503198][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 48.508575][ T3596] netlink_unicast+0x539/0x7e0 [ 48.513862][ T3596] ? netlink_attachskb+0x880/0x880 [ 48.519071][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.525430][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.531683][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 48.536800][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 48.542526][ T3596] ? __check_object_size+0x16e/0x310 [ 48.547911][ T3596] netlink_sendmsg+0x904/0xe00 [ 48.552677][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 48.557715][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.564061][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 48.568987][ T3596] sock_sendmsg+0xcf/0x120 [ 48.573393][ T3596] __sys_sendto+0x21c/0x320 [ 48.577913][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 48.583279][ T3596] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.589263][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 48.594717][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 48.599553][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 48.604416][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 48.609169][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 48.614355][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 48.620424][ T3596] do_syscall_64+0x35/0xb0 [ 48.624828][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.630731][ T3596] RIP: 0033:0x7f37b387ee1c [ 48.635144][ 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 [ 48.655473][ T3596] RSP: 002b:00007ffe7a48ec80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 48.663979][ T3596] RAX: ffffffffffffffda RBX: 00007f37b4917320 RCX: 00007f37b387ee1c [ 48.671943][ T3596] RDX: 0000000000000048 RSI: 00007f37b4917370 RDI: 0000000000000003 [ 48.679902][ T3596] RBP: 0000000000000000 R08: 00007ffe7a48ecd4 R09: 000000000000000c [ 48.687872][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 48.695836][ T3596] R13: 00007f37b4917370 R14: 0000000000000003 R15: 0000000000000000 [ 48.703803][ T3596] [ 48.714395][ T3596] device hsr_slave_0 entered promiscuous mode [ 48.721599][ T3596] device hsr_slave_1 entered promiscuous mode [ 48.798219][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 48.808586][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 48.818683][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 48.827638][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 48.847982][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.855194][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.864043][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.871131][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.918132][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.930201][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.940373][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.949088][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.957179][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.970445][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.980239][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.989009][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.997491][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.004611][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.015795][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.024786][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.033912][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.041033][ T3605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.053176][ T1131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.072974][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.081522][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.090589][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.099248][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.108426][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.116970][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.125262][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.133691][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.142012][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.150897][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.161341][ T3596] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.179235][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.186755][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.200150][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 49.318053][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.327842][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.346630][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 49.356439][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.366736][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.375122][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.385263][ T3596] device veth0_vlan entered promiscuous mode [ 49.396014][ T3596] device veth1_vlan entered promiscuous mode [ 49.416118][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.424313][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.433126][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 49.442014][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.454330][ T3596] device veth0_macvtap entered promiscuous mode [ 49.464785][ T3596] device veth1_macvtap entered promiscuous mode [ 49.479687][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.487179][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.496296][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 49.504639][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 49.513400][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.525517][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.533297][ T1131] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 49.541765][ T1131] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.553711][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.563009][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.571865][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.581469][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.638585][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.656586][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.664615][ T90] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.667176][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.674163][ T90] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.689391][ T1131] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/13 22:20:38 building call list... [ 52.028933][ T3589] can: request_module (can-proto-0) failed. [ 52.052287][ T3589] can: request_module (can-proto-0) failed. [ 52.075955][ T3589] can: request_module (can-proto-0) failed. executing program [ 52.690140][ T90] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0