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 [ 28.551408][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.561431][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. 2022/02/17 13:37:55 fuzzer started 2022/02/17 13:37:55 connecting to host at 10.128.0.169:41755 2022/02/17 13:37:55 checking machine... 2022/02/17 13:37:55 checking revisions... 2022/02/17 13:37:55 testing simple program... syzkaller login: [ 50.067237][ T3600] cgroup: Unknown subsys name 'net' [ 50.205705][ T3600] cgroup: Unknown subsys name 'rlimit' [ 51.379372][ T3603] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.387802][ T3603] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.396153][ T3603] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.404439][ T3606] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.412294][ T3606] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.419701][ T3606] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.507317][ T3602] chnl_net:caif_netlink_parms(): no params data found [ 51.550434][ T3602] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.558417][ T3602] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.566563][ T3602] device bridge_slave_0 entered promiscuous mode [ 51.575528][ T3602] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.582864][ T3602] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.591127][ T3602] device bridge_slave_1 entered promiscuous mode [ 51.611371][ T3602] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.622847][ T3602] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.644556][ T3602] team0: Port device team_slave_0 added [ 51.652309][ T3602] team0: Port device team_slave_1 added [ 51.669936][ T3602] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.676894][ T3602] 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. [ 51.702924][ T3602] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.716021][ T3602] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.723226][ T3602] 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. [ 51.749180][ T3602] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.772621][ T3602] [ 51.775059][ T3602] ============================= [ 51.779935][ T3602] WARNING: suspicious RCU usage [ 51.784778][ T3602] 5.17.0-rc3-syzkaller-01223-gc8b441d2fbd0 #0 Not tainted [ 51.791921][ T3602] ----------------------------- [ 51.796765][ T3602] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.804947][ T3602] [ 51.804947][ T3602] other info that might help us debug this: [ 51.804947][ T3602] [ 51.815197][ T3602] [ 51.815197][ T3602] rcu_scheduler_active = 2, debug_locks = 1 [ 51.823321][ T3602] 2 locks held by syz-executor.0/3602: [ 51.828847][ T3602] #0: ffffffff8d32cb28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.838312][ T3602] #1: ffff888077ea55f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.848494][ T3602] [ 51.848494][ T3602] stack backtrace: [ 51.854409][ T3602] CPU: 0 PID: 3602 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01223-gc8b441d2fbd0 #0 [ 51.864804][ T3602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.874844][ T3602] Call Trace: [ 51.878110][ T3602] [ 51.881026][ T3602] dump_stack_lvl+0xcd/0x134 [ 51.885606][ T3602] hsr_node_get_first+0x9b/0xb0 [ 51.890446][ T3602] hsr_create_self_node+0x22d/0x650 [ 51.895634][ T3602] hsr_dev_finalize+0x2c1/0x7d0 [ 51.900487][ T3602] hsr_newlink+0x315/0x730 [ 51.904893][ T3602] ? hsr_dellink+0x130/0x130 [ 51.909484][ T3602] ? rtnl_create_link+0x7e8/0xc00 [ 51.916439][ T3602] ? hsr_dellink+0x130/0x130 [ 51.921033][ T3602] __rtnl_newlink+0x107c/0x1760 [ 51.925967][ T3602] ? rtnl_setlink+0x3c0/0x3c0 [ 51.930643][ T3602] ? is_bpf_text_address+0x77/0x170 [ 51.935831][ T3602] ? lock_downgrade+0x6e0/0x6e0 [ 51.940674][ T3602] ? unwind_next_frame+0xee1/0x1ce0 [ 51.945873][ T3602] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.951947][ T3602] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.957677][ T3602] ? is_bpf_text_address+0x99/0x170 [ 51.962894][ T3602] ? kernel_text_address+0x39/0x80 [ 51.968004][ T3602] ? __kernel_text_address+0x9/0x30 [ 51.973201][ T3602] ? unwind_get_return_address+0x51/0x90 [ 51.978832][ T3602] ? create_prof_cpu_mask+0x20/0x20 [ 51.984029][ T3602] ? arch_stack_walk+0x93/0xe0 [ 51.988843][ T3602] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 51.994315][ T3602] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.999865][ T3602] rtnl_newlink+0x64/0xa0 [ 52.004193][ T3602] ? __rtnl_newlink+0x1760/0x1760 [ 52.009214][ T3602] rtnetlink_rcv_msg+0x413/0xb80 [ 52.014152][ T3602] ? rtnl_newlink+0xa0/0xa0 [ 52.018667][ T3602] netlink_rcv_skb+0x153/0x420 [ 52.023429][ T3602] ? rtnl_newlink+0xa0/0xa0 [ 52.027938][ T3602] ? netlink_ack+0xa60/0xa60 [ 52.032526][ T3602] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.037817][ T3602] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.043105][ T3602] netlink_unicast+0x539/0x7e0 [ 52.047871][ T3602] ? netlink_attachskb+0x880/0x880 [ 52.052979][ T3602] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.059226][ T3602] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.065568][ T3602] ? __phys_addr_symbol+0x2c/0x70 [ 52.070593][ T3602] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.076316][ T3602] ? __check_object_size+0x16e/0x310 [ 52.081688][ T3602] netlink_sendmsg+0x904/0xe00 [ 52.086468][ T3602] ? netlink_unicast+0x7e0/0x7e0 [ 52.091424][ T3602] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.097671][ T3602] ? netlink_unicast+0x7e0/0x7e0 [ 52.102606][ T3602] sock_sendmsg+0xcf/0x120 [ 52.107039][ T3602] __sys_sendto+0x21c/0x320 [ 52.111543][ T3602] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.116912][ T3602] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.122910][ T3602] ? __context_tracking_exit+0xb8/0xe0 [ 52.128363][ T3602] ? lock_downgrade+0x6e0/0x6e0 [ 52.133212][ T3602] ? lock_downgrade+0x6e0/0x6e0 [ 52.138083][ T3602] __x64_sys_sendto+0xdd/0x1b0 [ 52.143020][ T3602] ? lockdep_hardirqs_on+0x79/0x100 [ 52.148235][ T3602] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.154130][ T3602] do_syscall_64+0x35/0xb0 [ 52.158547][ T3602] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.164453][ T3602] RIP: 0033:0x7fa719b47e1c [ 52.168869][ T3602] 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 [ 52.188474][ T3602] RSP: 002b:00007ffffa88e930 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.196883][ T3602] RAX: ffffffffffffffda RBX: 00007fa71abe0320 RCX: 00007fa719b47e1c [ 52.204934][ T3602] RDX: 0000000000000048 RSI: 00007fa71abe0370 RDI: 0000000000000003 [ 52.212905][ T3602] RBP: 0000000000000000 R08: 00007ffffa88e984 R09: 000000000000000c [ 52.220867][ T3602] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.228830][ T3602] R13: 00007fa71abe0370 R14: 0000000000000003 R15: 0000000000000000 [ 52.236826][ T3602] [ 52.246930][ T3602] device hsr_slave_0 entered promiscuous mode [ 52.254291][ T3602] device hsr_slave_1 entered promiscuous mode [ 52.332312][ T3602] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.343185][ T3602] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.352816][ T3602] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.361684][ T3602] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.383328][ T3602] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.390528][ T3602] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.398416][ T3602] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.405545][ T3602] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.450368][ T3602] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.463494][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.474820][ T3612] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.483584][ T3612] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.491666][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.504913][ T3602] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.514571][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.523271][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.532524][ T3614] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.540762][ T3614] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.551909][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.560889][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.571848][ T140] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.578960][ T140] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.602241][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.611676][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.620800][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.630640][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.639355][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.647871][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.656495][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.664843][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.673192][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.681798][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.692253][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.700675][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.719980][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.727421][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.741388][ T3602] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 52.879064][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.887975][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.896813][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.905904][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.914866][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.922919][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.931627][ T3602] device veth0_vlan entered promiscuous mode [ 52.943250][ T3602] device veth1_vlan entered promiscuous mode [ 52.960994][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.969540][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.977481][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.986124][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.997528][ T3602] device veth0_macvtap entered promiscuous mode [ 53.008102][ T3602] device veth1_macvtap entered promiscuous mode [ 53.023094][ T3602] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.032199][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.040574][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.048391][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.057166][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.068400][ T3602] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.075991][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.085367][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.096327][ T3602] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.105915][ T3602] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.115246][ T3602] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.124274][ T3602] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.185549][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.206933][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.213005][ T1018] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.217096][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.222608][ T1018] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.237893][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 13:37:58 building call list... [ 53.491009][ T1018] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.564771][ T3595] can: request_module (can-proto-0) failed. [ 55.587645][ T3595] can: request_module (can-proto-0) failed. [ 55.608510][ T3595] can: request_module (can-proto-0) failed. executing program [ 56.260527][ T3602] syz-executor.0 (3602) used greatest stack depth: 22664 bytes left