DUID 00:04:99:cf:64:81:91:3a:f8:b3:88:a8:0e:05:2a:78:8a:13 forked to background, child pid 3175 [ 28.365522][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.375110][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.242' (ECDSA) to the list of known hosts. 2022/02/17 14:06:04 fuzzer started 2022/02/17 14:06:04 connecting to host at 10.128.0.169:37039 2022/02/17 14:06:04 checking machine... 2022/02/17 14:06:04 checking revisions... 2022/02/17 14:06:05 testing simple program... syzkaller login: [ 49.853364][ T3596] cgroup: Unknown subsys name 'net' [ 49.978625][ T3596] cgroup: Unknown subsys name 'rlimit' [ 51.233600][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.242725][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.250195][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.258736][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.266400][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.273791][ T3602] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.360528][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 51.403224][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.410848][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.419034][ T3598] device bridge_slave_0 entered promiscuous mode [ 51.428195][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.435489][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.444326][ T3598] device bridge_slave_1 entered promiscuous mode [ 51.464397][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.475274][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.497601][ T3598] team0: Port device team_slave_0 added [ 51.505008][ T3598] team0: Port device team_slave_1 added [ 51.522863][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.529799][ T3598] 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. [ 51.555782][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.569374][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.576424][ T3598] 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. [ 51.602596][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.625782][ T3598] [ 51.628212][ T3598] ============================= [ 51.633099][ T3598] WARNING: suspicious RCU usage [ 51.637943][ T3598] 5.17.0-rc4-next-20220217-syzkaller #0 Not tainted [ 51.644569][ T3598] ----------------------------- [ 51.649407][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.657607][ T3598] [ 51.657607][ T3598] other info that might help us debug this: [ 51.657607][ T3598] [ 51.667867][ T3598] [ 51.667867][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 51.675968][ T3598] 2 locks held by syz-executor.0/3598: [ 51.681426][ T3598] #0: ffffffff8d539528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.690912][ T3598] #1: ffff88801ef515f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.701125][ T3598] [ 51.701125][ T3598] stack backtrace: [ 51.707068][ T3598] CPU: 1 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc4-next-20220217-syzkaller #0 [ 51.716963][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.727015][ T3598] Call Trace: [ 51.730288][ T3598] [ 51.733212][ T3598] dump_stack_lvl+0xcd/0x134 [ 51.737813][ T3598] hsr_node_get_first+0x9b/0xb0 [ 51.742676][ T3598] hsr_create_self_node+0x22d/0x650 [ 51.747888][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 51.752744][ T3598] hsr_newlink+0x315/0x730 [ 51.757159][ T3598] ? hsr_dellink+0x130/0x130 [ 51.761750][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 51.766798][ T3598] ? hsr_dellink+0x130/0x130 [ 51.771388][ T3598] __rtnl_newlink+0x107c/0x1760 [ 51.776254][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 51.780941][ T3598] ? is_bpf_text_address+0x77/0x170 [ 51.786189][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 51.791064][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 51.796275][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.802365][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.808112][ T3598] ? is_bpf_text_address+0x99/0x170 [ 51.813325][ T3598] ? kernel_text_address+0x39/0x80 [ 51.818442][ T3598] ? __kernel_text_address+0x9/0x30 [ 51.823656][ T3598] ? unwind_get_return_address+0x51/0x90 [ 51.829387][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 51.834599][ T3598] ? arch_stack_walk+0x93/0xe0 [ 51.839431][ T3598] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 51.844914][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.850475][ T3598] rtnl_newlink+0x64/0xa0 [ 51.854819][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 51.859847][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 51.864796][ T3598] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.869581][ T3598] netlink_rcv_skb+0x153/0x420 [ 51.874349][ T3598] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.879120][ T3598] ? netlink_ack+0xa80/0xa80 [ 51.883710][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 51.889004][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.894297][ T3598] netlink_unicast+0x539/0x7e0 [ 51.899066][ T3598] ? netlink_attachskb+0x880/0x880 [ 51.904185][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.910453][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.916702][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 51.921733][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.927459][ T3598] ? __check_object_size+0x16c/0x4f0 [ 51.932750][ T3598] netlink_sendmsg+0x904/0xe00 [ 51.937524][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 51.942467][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.948717][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 51.953655][ T3598] sock_sendmsg+0xcf/0x120 [ 51.958084][ T3598] __sys_sendto+0x21c/0x320 [ 51.962593][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.967982][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 51.973204][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 51.978688][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 51.983564][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 51.988333][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 51.993539][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.999438][ T3598] do_syscall_64+0x35/0xb0 [ 52.003855][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.009765][ T3598] RIP: 0033:0x7f45c89afe1c [ 52.014179][ T3598] 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 [ 52.033779][ T3598] RSP: 002b:00007ffc6ef1f380 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.042206][ T3598] RAX: ffffffffffffffda RBX: 00007f45c9a48320 RCX: 00007f45c89afe1c [ 52.050170][ T3598] RDX: 0000000000000048 RSI: 00007f45c9a48370 RDI: 0000000000000003 [ 52.058137][ T3598] RBP: 0000000000000000 R08: 00007ffc6ef1f3d4 R09: 000000000000000c [ 52.066101][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.074064][ T3598] R13: 00007f45c9a48370 R14: 0000000000000003 R15: 0000000000000000 [ 52.082048][ T3598] [ 52.093249][ T3598] device hsr_slave_0 entered promiscuous mode [ 52.099821][ T3598] device hsr_slave_1 entered promiscuous mode [ 52.177971][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.188416][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.197535][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.206310][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.227713][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.234899][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.243615][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.250691][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.297353][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.309463][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.319380][ T14] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.329320][ T14] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.337539][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.351718][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.362629][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.371149][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.380270][ T14] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.387358][ T14] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.398664][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.408333][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.417621][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.424770][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.448779][ T3598] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.459268][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.470653][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.479372][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.488723][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.497684][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.506422][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.515164][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.524135][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.532710][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.541348][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.549987][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.559266][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.567192][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.588593][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.596702][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.604509][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 52.713462][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.723341][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.737492][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.746778][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.757025][ T3598] device veth0_vlan entered promiscuous mode [ 52.764156][ T2926] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.771775][ T2926] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.785677][ T3598] device veth1_vlan entered promiscuous mode [ 52.803642][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.811742][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.820246][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.829255][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.839774][ T3598] device veth0_macvtap entered promiscuous mode [ 52.848932][ T3598] device veth1_macvtap entered promiscuous mode [ 52.864752][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.872711][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.880713][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.889204][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.898515][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.910696][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.919530][ T2926] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.928406][ T2926] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.939914][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.949163][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.958124][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.967513][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.026965][ T955] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.044321][ T955] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.054183][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.055932][ T2926] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.063145][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.079627][ T2926] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 14:06:08 building call list... [ 53.331862][ T8] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.466367][ T3590] can: request_module (can-proto-0) failed. [ 55.492410][ T3590] can: request_module (can-proto-0) failed. [ 55.512455][ T3590] can: request_module (can-proto-0) failed. executing program [ 55.901559][ T8] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0