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 [ 27.584607][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.596150][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. 2022/02/19 16:47:52 fuzzer started 2022/02/19 16:47:52 connecting to host at 10.128.0.169:42077 2022/02/19 16:47:52 checking machine... 2022/02/19 16:47:52 checking revisions... 2022/02/19 16:47:52 testing simple program... syzkaller login: [ 46.943092][ T3594] cgroup: Unknown subsys name 'net' [ 47.041004][ T3594] cgroup: Unknown subsys name 'rlimit' [ 48.245320][ T3597] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 48.254176][ T3600] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 48.262095][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 48.270533][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 48.278917][ T3600] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 48.286777][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 48.380085][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 48.424767][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.432813][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.440942][ T3596] device bridge_slave_0 entered promiscuous mode [ 48.450530][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.457777][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.465902][ T3596] device bridge_slave_1 entered promiscuous mode [ 48.486568][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.497524][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.521020][ T3596] team0: Port device team_slave_0 added [ 48.528753][ T3596] team0: Port device team_slave_1 added [ 48.546876][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.554073][ 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. [ 48.580373][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.593630][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.600652][ 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. [ 48.626619][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.651547][ T3596] [ 48.654035][ T3596] ============================= [ 48.658867][ T3596] WARNING: suspicious RCU usage [ 48.663754][ T3596] 5.17.0-rc4-syzkaller-01370-g92c54a65e6a8 #0 Not tainted [ 48.670877][ T3596] ----------------------------- [ 48.675793][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.684120][ T3596] [ 48.684120][ T3596] other info that might help us debug this: [ 48.684120][ T3596] [ 48.694424][ T3596] [ 48.694424][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 48.702490][ T3596] 2 locks held by syz-executor.0/3596: [ 48.708015][ T3596] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.717506][ T3596] #1: ffff88801e8a95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.727695][ T3596] [ 48.727695][ T3596] stack backtrace: [ 48.733648][ T3596] CPU: 0 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01370-g92c54a65e6a8 #0 [ 48.744068][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.754115][ T3596] Call Trace: [ 48.757384][ T3596] [ 48.760303][ T3596] dump_stack_lvl+0xcd/0x134 [ 48.764897][ T3596] hsr_node_get_first+0x9b/0xb0 [ 48.769734][ T3596] hsr_create_self_node+0x22d/0x650 [ 48.774942][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 48.779794][ T3596] hsr_newlink+0x315/0x730 [ 48.784196][ T3596] ? hsr_dellink+0x130/0x130 [ 48.788773][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 48.793786][ T3596] ? hsr_dellink+0x130/0x130 [ 48.798362][ T3596] __rtnl_newlink+0x107c/0x1760 [ 48.803988][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 48.808656][ T3596] ? is_bpf_text_address+0x77/0x170 [ 48.813865][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 48.818706][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 48.823892][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.829946][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 48.835659][ T3596] ? is_bpf_text_address+0x99/0x170 [ 48.840931][ T3596] ? kernel_text_address+0x39/0x80 [ 48.846028][ T3596] ? __kernel_text_address+0x9/0x30 [ 48.851213][ T3596] ? unwind_get_return_address+0x51/0x90 [ 48.856848][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 48.862031][ T3596] ? arch_stack_walk+0x93/0xe0 [ 48.866825][ T3596] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 48.873090][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 48.878629][ T3596] rtnl_newlink+0x64/0xa0 [ 48.882964][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 48.888020][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 48.892959][ T3596] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 48.897743][ T3596] netlink_rcv_skb+0x153/0x420 [ 48.902513][ T3596] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 48.907279][ T3596] ? netlink_ack+0xa60/0xa60 [ 48.911867][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 48.917145][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 48.922425][ T3596] netlink_unicast+0x539/0x7e0 [ 48.927186][ T3596] ? netlink_attachskb+0x880/0x880 [ 48.932305][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.938553][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.944788][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 48.949802][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 48.955509][ T3596] ? __check_object_size+0x16e/0x310 [ 48.960801][ T3596] netlink_sendmsg+0x904/0xe00 [ 48.965555][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 48.970495][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.976752][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 48.981701][ T3596] sock_sendmsg+0xcf/0x120 [ 48.986123][ T3596] __sys_sendto+0x21c/0x320 [ 48.990630][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 48.995986][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 49.001186][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 49.006750][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.011597][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 49.016360][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 49.021726][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.027607][ T3596] do_syscall_64+0x35/0xb0 [ 49.032014][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.037916][ T3596] RIP: 0033:0x7f5ca4389e1c [ 49.042666][ 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 [ 49.062465][ T3596] RSP: 002b:00007ffcba571890 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 49.071019][ T3596] RAX: ffffffffffffffda RBX: 00007f5ca5422320 RCX: 00007f5ca4389e1c [ 49.079009][ T3596] RDX: 0000000000000048 RSI: 00007f5ca5422370 RDI: 0000000000000003 [ 49.087320][ T3596] RBP: 0000000000000000 R08: 00007ffcba5718e4 R09: 000000000000000c [ 49.095294][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 49.103280][ T3596] R13: 00007f5ca5422370 R14: 0000000000000003 R15: 0000000000000000 [ 49.111248][ T3596] [ 49.119167][ T3596] device hsr_slave_0 entered promiscuous mode [ 49.126339][ T3596] device hsr_slave_1 entered promiscuous mode [ 49.209388][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 49.220612][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 49.230197][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 49.240368][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 49.262071][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.269389][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.277410][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.284576][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.332993][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.346388][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.357042][ T140] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.366751][ T140] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.375410][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 49.388173][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.404060][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.412639][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.421382][ T140] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.428487][ T140] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.437460][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.446091][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.454684][ T140] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.461816][ T140] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.469476][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.489025][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.498274][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.507224][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.517962][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.525956][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.535032][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.547121][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.556337][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.569976][ T3596] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.582390][ T3596] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.590537][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.600738][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.618943][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.626495][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.640419][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 49.755138][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.764547][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.774042][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 49.782192][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.792368][ T3596] device veth0_vlan entered promiscuous mode [ 49.800799][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.809897][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.821854][ T3596] device veth1_vlan entered promiscuous mode [ 49.839558][ T3596] device veth0_macvtap entered promiscuous mode [ 49.849451][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.857916][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.866346][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 49.875642][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.885399][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.895359][ T3596] device veth1_macvtap entered promiscuous mode [ 49.911883][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.919840][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 49.928585][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 49.937741][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.949031][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.958184][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 49.968064][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.978567][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.988305][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.997308][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.006707][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.069297][ T996] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.087866][ T996] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.099089][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 50.108616][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.117852][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.128474][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/19 16:47:56 building call list... [ 50.379663][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 52.495321][ T3585] can: request_module (can-proto-0) failed. [ 52.517630][ T3585] can: request_module (can-proto-0) failed. [ 52.538888][ T3585] can: request_module (can-proto-0) failed. executing program [ 53.004853][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.175744][ T3596] syz-executor.0 (3596) used greatest stack depth: 22304 bytes left