DUID 00:04:44:5a:cc:c9:49:7a:03:7b:0e:36:9f:1a:c7:8d:92:7d forked to background, child pid 3174 [ 32.741316][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.755654][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. 2022/02/10 15:56:14 fuzzer started 2022/02/10 15:56:14 connecting to host at 10.128.0.169:34727 2022/02/10 15:56:14 checking machine... 2022/02/10 15:56:14 checking revisions... 2022/02/10 15:56:15 testing simple program... syzkaller login: [ 50.245317][ T3596] cgroup: Unknown subsys name 'net' [ 50.374119][ T3596] cgroup: Unknown subsys name 'rlimit' [ 51.624079][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.633964][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.642081][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.650059][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.657841][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.665351][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.762661][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 51.807843][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.815519][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.823805][ T3598] device bridge_slave_0 entered promiscuous mode [ 51.833169][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.840769][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.849286][ T3598] device bridge_slave_1 entered promiscuous mode [ 51.874334][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.885289][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.908750][ T3598] team0: Port device team_slave_0 added [ 51.917086][ T3598] team0: Port device team_slave_1 added [ 51.935512][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.942664][ 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. [ 51.968932][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.982389][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.989720][ 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. [ 52.016285][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.040674][ T3598] [ 52.043134][ T3598] ============================= [ 52.048054][ T3598] WARNING: suspicious RCU usage [ 52.052928][ T3598] 5.17.0-rc2-syzkaller-00924-g9557167bc63e #0 Not tainted [ 52.060367][ T3598] ----------------------------- [ 52.065395][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.073614][ T3598] [ 52.073614][ T3598] other info that might help us debug this: [ 52.073614][ T3598] [ 52.083978][ T3598] [ 52.083978][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 52.092084][ T3598] 2 locks held by syz-executor.0/3598: [ 52.097688][ T3598] #0: ffffffff8d32c7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.107163][ T3598] #1: ffff88806e4e95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.117506][ T3598] [ 52.117506][ T3598] stack backtrace: [ 52.123397][ T3598] CPU: 1 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00924-g9557167bc63e #0 [ 52.133814][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.144051][ T3598] Call Trace: [ 52.147331][ T3598] [ 52.150272][ T3598] dump_stack_lvl+0xcd/0x134 [ 52.154895][ T3598] hsr_node_get_first+0x9b/0xb0 [ 52.159867][ T3598] hsr_create_self_node+0x22d/0x650 [ 52.165099][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 52.170062][ T3598] hsr_newlink+0x315/0x730 [ 52.174484][ T3598] ? hsr_dellink+0x130/0x130 [ 52.179176][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 52.184296][ T3598] ? hsr_dellink+0x130/0x130 [ 52.189249][ T3598] __rtnl_newlink+0x107c/0x1760 [ 52.194138][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 52.198927][ T3598] ? is_bpf_text_address+0x77/0x170 [ 52.204408][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 52.209354][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 52.214647][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.220751][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.226698][ T3598] ? is_bpf_text_address+0x99/0x170 [ 52.231921][ T3598] ? kernel_text_address+0x39/0x80 [ 52.237046][ T3598] ? __kernel_text_address+0x9/0x30 [ 52.242255][ T3598] ? unwind_get_return_address+0x51/0x90 [ 52.247899][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 52.253105][ T3598] ? arch_stack_walk+0x93/0xe0 [ 52.258030][ T3598] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.263621][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.269180][ T3598] rtnl_newlink+0x64/0xa0 [ 52.273516][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 52.278551][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 52.283500][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 52.288119][ T3598] netlink_rcv_skb+0x153/0x420 [ 52.292890][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 52.297402][ T3598] ? netlink_ack+0xa60/0xa60 [ 52.306858][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.312333][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.317737][ T3598] netlink_unicast+0x539/0x7e0 [ 52.322687][ T3598] ? netlink_attachskb+0x880/0x880 [ 52.327797][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.334050][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.340299][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 52.345329][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.351063][ T3598] ? __check_object_size+0x16e/0x310 [ 52.356356][ T3598] netlink_sendmsg+0x904/0xe00 [ 52.361135][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 52.366173][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.372427][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 52.377376][ T3598] sock_sendmsg+0xcf/0x120 [ 52.381802][ T3598] __sys_sendto+0x21c/0x320 [ 52.386320][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.391695][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.397968][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 52.403437][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 52.408380][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 52.413251][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 52.418022][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 52.423230][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.429133][ T3598] do_syscall_64+0x35/0xb0 [ 52.433646][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.439546][ T3598] RIP: 0033:0x7f1e54c42e1c [ 52.443989][ 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 [ 52.463777][ T3598] RSP: 002b:00007ffcc765aa20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.472286][ T3598] RAX: ffffffffffffffda RBX: 00007f1e55cdb320 RCX: 00007f1e54c42e1c [ 52.480263][ T3598] RDX: 0000000000000048 RSI: 00007f1e55cdb370 RDI: 0000000000000003 [ 52.488336][ T3598] RBP: 0000000000000000 R08: 00007ffcc765aa74 R09: 000000000000000c [ 52.496317][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.504288][ T3598] R13: 00007f1e55cdb370 R14: 0000000000000003 R15: 0000000000000000 [ 52.512460][ T3598] [ 52.523824][ T3598] device hsr_slave_0 entered promiscuous mode [ 52.531683][ T3598] device hsr_slave_1 entered promiscuous mode [ 52.625152][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.636399][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.646062][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.655023][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.676796][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.684025][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.692198][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.699409][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.746408][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.760290][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.772059][ T140] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.781110][ T140] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.790764][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.804769][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.819587][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.829921][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.839444][ T140] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.846543][ T140] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.860293][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.869491][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.878226][ T21] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.885390][ T21] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.895732][ T1692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.909572][ T1692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.921239][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.930222][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.940441][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.955800][ T3598] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.966679][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.979827][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.990630][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.999431][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.007963][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.017474][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.026070][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 53.038540][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.075572][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.083375][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.098550][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.249101][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.259081][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.272311][ T3598] device veth0_vlan entered promiscuous mode [ 53.279559][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.288874][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.298617][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.306403][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.320320][ T3598] device veth1_vlan entered promiscuous mode [ 53.340364][ T1692] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.349395][ T1692] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.358010][ T1692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.366550][ T1692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.378087][ T3598] device veth0_macvtap entered promiscuous mode [ 53.387727][ T3598] device veth1_macvtap entered promiscuous mode [ 53.402224][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.410529][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.419437][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.429102][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.437829][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.450072][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.458313][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.466900][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.479880][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.489037][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.498256][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.507013][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.571804][ T1273] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.580822][ T1273] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.593150][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.616168][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.624700][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.634662][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/10 15:56:18 building call list... [ 53.688964][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 53.942613][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 56.076912][ T3590] can: request_module (can-proto-0) failed. [ 56.099952][ T3590] can: request_module (can-proto-0) failed. [ 56.121144][ T3590] can: request_module (can-proto-0) failed. [ 56.679613][ T3598] syz-executor.0 (3598) used greatest stack depth: 22560 bytes left [ 56.772897][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0