DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3175 [ 29.481850][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.495838][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.104' (ECDSA) to the list of known hosts. 2022/02/14 11:26:02 fuzzer started 2022/02/14 11:26:02 connecting to host at 10.128.0.169:40683 2022/02/14 11:26:02 checking machine... 2022/02/14 11:26:02 checking revisions... 2022/02/14 11:26:02 testing simple program... syzkaller login: [ 51.257112][ T3595] cgroup: Unknown subsys name 'net' [ 51.422282][ T3595] cgroup: Unknown subsys name 'rlimit' [ 52.643510][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.652627][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.660809][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.669246][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.676884][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.684141][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.773209][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 52.815644][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.823615][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.831681][ T3597] device bridge_slave_0 entered promiscuous mode [ 52.841602][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.849099][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.857981][ T3597] device bridge_slave_1 entered promiscuous mode [ 52.880231][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.891590][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.913595][ T3597] team0: Port device team_slave_0 added [ 52.921124][ T3597] team0: Port device team_slave_1 added [ 52.939500][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.946631][ 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. [ 52.973839][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.987059][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.994119][ 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. [ 53.024748][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.048121][ T3597] [ 53.050550][ T3597] ============================= [ 53.055436][ T3597] WARNING: suspicious RCU usage [ 53.060282][ T3597] 5.17.0-rc3-syzkaller-01133-g2e13bde13153 #0 Not tainted [ 53.067501][ T3597] ----------------------------- [ 53.072340][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.080512][ T3597] [ 53.080512][ T3597] other info that might help us debug this: [ 53.080512][ T3597] [ 53.091154][ T3597] [ 53.091154][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 53.099529][ T3597] 2 locks held by syz-executor.0/3597: [ 53.105083][ T3597] #0: ffffffff8d32cba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.114871][ T3597] #1: ffff88807ebe95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.125059][ T3597] [ 53.125059][ T3597] stack backtrace: [ 53.130994][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01133-g2e13bde13153 #0 [ 53.141469][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.151829][ T3597] Call Trace: [ 53.155161][ T3597] [ 53.158103][ T3597] dump_stack_lvl+0xcd/0x134 [ 53.162952][ T3597] hsr_node_get_first+0x9b/0xb0 [ 53.167965][ T3597] hsr_create_self_node+0x22d/0x650 [ 53.173324][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 53.178345][ T3597] hsr_newlink+0x315/0x730 [ 53.182758][ T3597] ? hsr_dellink+0x130/0x130 [ 53.187390][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 53.192509][ T3597] ? hsr_dellink+0x130/0x130 [ 53.197355][ T3597] __rtnl_newlink+0x107c/0x1760 [ 53.202202][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 53.206879][ T3597] ? is_bpf_text_address+0x77/0x170 [ 53.212084][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.217292][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 53.222488][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.228595][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.234329][ T3597] ? is_bpf_text_address+0x99/0x170 [ 53.239617][ T3597] ? kernel_text_address+0x39/0x80 [ 53.244728][ T3597] ? __kernel_text_address+0x9/0x30 [ 53.250023][ T3597] ? unwind_get_return_address+0x51/0x90 [ 53.255657][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 53.261033][ T3597] ? arch_stack_walk+0x93/0xe0 [ 53.266085][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.271955][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.277528][ T3597] rtnl_newlink+0x64/0xa0 [ 53.282391][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 53.287593][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 53.292622][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.297141][ T3597] netlink_rcv_skb+0x153/0x420 [ 53.302206][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.306712][ T3597] ? netlink_ack+0xa60/0xa60 [ 53.311486][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.316954][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.322249][ T3597] netlink_unicast+0x539/0x7e0 [ 53.327022][ T3597] ? netlink_attachskb+0x880/0x880 [ 53.332133][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.338556][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.344810][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 53.349846][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.355665][ T3597] ? __check_object_size+0x16e/0x310 [ 53.361561][ T3597] netlink_sendmsg+0x904/0xe00 [ 53.366332][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.371274][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.377518][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.382456][ T3597] sock_sendmsg+0xcf/0x120 [ 53.386873][ T3597] __sys_sendto+0x21c/0x320 [ 53.391377][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.396747][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.402766][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 53.408230][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.413081][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.417951][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 53.422734][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 53.428057][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.433954][ T3597] do_syscall_64+0x35/0xb0 [ 53.438456][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.444633][ T3597] RIP: 0033:0x7f2894b5ee1c [ 53.451094][ 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 [ 53.472183][ T3597] RSP: 002b:00007ffe973ae060 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.480594][ T3597] RAX: ffffffffffffffda RBX: 00007f2895bf7320 RCX: 00007f2894b5ee1c [ 53.488572][ T3597] RDX: 0000000000000048 RSI: 00007f2895bf7370 RDI: 0000000000000003 [ 53.496713][ T3597] RBP: 0000000000000000 R08: 00007ffe973ae0b4 R09: 000000000000000c [ 53.504682][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.512760][ T3597] R13: 00007f2895bf7370 R14: 0000000000000003 R15: 0000000000000000 [ 53.520830][ T3597] [ 53.529215][ T3597] device hsr_slave_0 entered promiscuous mode [ 53.539048][ T3597] device hsr_slave_1 entered promiscuous mode [ 53.627725][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.639687][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.648920][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.658236][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.678787][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.686069][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.693885][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.701475][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.747850][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.760874][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.770929][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.779982][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.789585][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.802025][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.812230][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.821222][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.830507][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.837669][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.856689][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.865956][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.874408][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.881867][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.889953][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.899117][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.915502][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.924942][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.933789][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.942974][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.951496][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.959826][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.968683][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.978651][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.987780][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.000080][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 54.016098][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.024174][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.038812][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.147844][ T2864] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.156995][ T2864] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.173399][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.181961][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.191274][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.199678][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.208896][ T3597] device veth0_vlan entered promiscuous mode [ 54.220881][ T3597] device veth1_vlan entered promiscuous mode [ 54.238346][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.247036][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.254982][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.264414][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.277094][ T3597] device veth0_macvtap entered promiscuous mode [ 54.286881][ T3597] device veth1_macvtap entered promiscuous mode [ 54.302368][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.310268][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.318869][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.327679][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.336437][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.349403][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.357031][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.366336][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.376890][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.386663][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.396593][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.405464][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.492039][ T997] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.508682][ T997] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.519032][ T1334] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.519827][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.527615][ T1334] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.543423][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/14 11:26:06 building call list... [ 54.805902][ T997] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.778531][ T3590] can: request_module (can-proto-0) failed. [ 56.801224][ T3590] can: request_module (can-proto-0) failed. [ 56.820676][ T3590] can: request_module (can-proto-0) failed. executing program