DUID 00:04:1e:62:2e:d3:28:4c:47:2c:f6:06:4a:96:1e:52:1a:b0 forked to background, child pid 3175 [ 29.080348][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.091488][ T3176] 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. 2022/03/03 15:39:05 fuzzer started 2022/03/03 15:39:05 connecting to host at 10.128.0.169:44723 2022/03/03 15:39:05 checking machine... 2022/03/03 15:39:05 checking revisions... 2022/03/03 15:39:05 testing simple program... syzkaller login: [ 45.041263][ T3601] cgroup: Unknown subsys name 'net' [ 45.142775][ T3601] cgroup: Unknown subsys name 'rlimit' [ 46.365861][ T3607] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 46.374285][ T3610] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 46.382429][ T3610] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 46.390840][ T3610] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 46.398961][ T3610] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 46.406586][ T3610] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 46.501295][ T3605] chnl_net:caif_netlink_parms(): no params data found [ 46.550140][ T3605] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.558161][ T3605] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.566924][ T3605] device bridge_slave_0 entered promiscuous mode [ 46.577090][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.584237][ T3605] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.592321][ T3605] device bridge_slave_1 entered promiscuous mode [ 46.613692][ T3605] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 46.626171][ T3605] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 46.649877][ T3605] team0: Port device team_slave_0 added [ 46.657882][ T3605] team0: Port device team_slave_1 added [ 46.676741][ T3605] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 46.683728][ T3605] 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. [ 46.709920][ T3605] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 46.723266][ T3605] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 46.730647][ T3605] 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. [ 46.757127][ T3605] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 46.783367][ T3605] [ 46.785859][ T3605] ============================= [ 46.790694][ T3605] WARNING: suspicious RCU usage [ 46.795591][ T3605] 5.17.0-rc4-syzkaller-01381-g41332d6e3a43 #0 Not tainted [ 46.802699][ T3605] ----------------------------- [ 46.807637][ T3605] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 46.815927][ T3605] [ 46.815927][ T3605] other info that might help us debug this: [ 46.815927][ T3605] [ 46.826408][ T3605] [ 46.826408][ T3605] rcu_scheduler_active = 2, debug_locks = 1 [ 46.834652][ T3605] 2 locks held by syz-executor.0/3605: [ 46.840183][ T3605] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 46.849768][ T3605] #1: ffff8880238495f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 46.860065][ T3605] [ 46.860065][ T3605] stack backtrace: [ 46.865987][ T3605] CPU: 0 PID: 3605 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01381-g41332d6e3a43 #0 [ 46.876568][ T3605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.886607][ T3605] Call Trace: [ 46.889872][ T3605] [ 46.892794][ T3605] dump_stack_lvl+0xcd/0x134 [ 46.897386][ T3605] hsr_node_get_first+0x9b/0xb0 [ 46.902245][ T3605] hsr_create_self_node+0x22d/0x650 [ 46.907430][ T3605] hsr_dev_finalize+0x2c1/0x7d0 [ 46.912270][ T3605] hsr_newlink+0x315/0x730 [ 46.916671][ T3605] ? hsr_dellink+0x130/0x130 [ 46.921261][ T3605] ? rtnl_create_link+0x7e8/0xc00 [ 46.926369][ T3605] ? hsr_dellink+0x130/0x130 [ 46.930945][ T3605] __rtnl_newlink+0x107c/0x1760 [ 46.935971][ T3605] ? rtnl_setlink+0x3c0/0x3c0 [ 46.940637][ T3605] ? is_bpf_text_address+0x77/0x170 [ 46.945825][ T3605] ? lock_downgrade+0x6e0/0x6e0 [ 46.950680][ T3605] ? unwind_next_frame+0xee1/0x1ce0 [ 46.955864][ T3605] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.961919][ T3605] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 46.967630][ T3605] ? is_bpf_text_address+0x99/0x170 [ 46.972819][ T3605] ? kernel_text_address+0x39/0x80 [ 46.977916][ T3605] ? __kernel_text_address+0x9/0x30 [ 46.983445][ T3605] ? unwind_get_return_address+0x51/0x90 [ 46.989065][ T3605] ? create_prof_cpu_mask+0x20/0x20 [ 46.994257][ T3605] ? arch_stack_walk+0x93/0xe0 [ 46.999045][ T3605] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 47.004502][ T3605] ? rcu_read_lock_sched_held+0x3a/0x70 [ 47.010211][ T3605] rtnl_newlink+0x64/0xa0 [ 47.014540][ T3605] ? __rtnl_newlink+0x1760/0x1760 [ 47.019634][ T3605] rtnetlink_rcv_msg+0x413/0xb80 [ 47.024756][ T3605] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 47.029831][ T3605] netlink_rcv_skb+0x153/0x420 [ 47.034709][ T3605] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 47.039572][ T3605] ? netlink_ack+0xa60/0xa60 [ 47.044166][ T3605] ? netlink_deliver_tap+0x1a2/0xc40 [ 47.049729][ T3605] ? netlink_deliver_tap+0x1b1/0xc40 [ 47.055010][ T3605] netlink_unicast+0x539/0x7e0 [ 47.060219][ T3605] ? netlink_attachskb+0x880/0x880 [ 47.065318][ T3605] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 47.071656][ T3605] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 47.077980][ T3605] ? __phys_addr_symbol+0x2c/0x70 [ 47.083173][ T3605] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 47.089165][ T3605] ? __check_object_size+0x16e/0x310 [ 47.094450][ T3605] netlink_sendmsg+0x904/0xe00 [ 47.099210][ T3605] ? netlink_unicast+0x7e0/0x7e0 [ 47.104136][ T3605] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 47.110373][ T3605] ? netlink_unicast+0x7e0/0x7e0 [ 47.115567][ T3605] sock_sendmsg+0xcf/0x120 [ 47.120084][ T3605] __sys_sendto+0x21c/0x320 [ 47.124571][ T3605] ? __ia32_sys_getpeername+0xb0/0xb0 [ 47.130051][ T3605] ? lockdep_hardirqs_on+0x79/0x100 [ 47.135255][ T3605] ? __context_tracking_exit+0xb8/0xe0 [ 47.140807][ T3605] ? lock_downgrade+0x6e0/0x6e0 [ 47.145658][ T3605] __x64_sys_sendto+0xdd/0x1b0 [ 47.150422][ T3605] ? lockdep_hardirqs_on+0x79/0x100 [ 47.155607][ T3605] ? syscall_enter_from_user_mode+0x21/0x70 [ 47.161518][ T3605] do_syscall_64+0x35/0xb0 [ 47.165932][ T3605] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.171896][ T3605] RIP: 0033:0x7efcf2927e0c [ 47.176306][ T3605] 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 [ 47.196081][ T3605] RSP: 002b:00007ffebf53b660 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 47.204677][ T3605] RAX: ffffffffffffffda RBX: 00007efcf39c0320 RCX: 00007efcf2927e0c [ 47.212741][ T3605] RDX: 0000000000000048 RSI: 00007efcf39c0370 RDI: 0000000000000003 [ 47.220716][ T3605] RBP: 0000000000000000 R08: 00007ffebf53b6b4 R09: 000000000000000c [ 47.228674][ T3605] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 47.237063][ T3605] R13: 00007efcf39c0370 R14: 0000000000000003 R15: 0000000000000000 [ 47.245143][ T3605] [ 47.255117][ T3605] device hsr_slave_0 entered promiscuous mode [ 47.263444][ T3605] device hsr_slave_1 entered promiscuous mode [ 47.352310][ T3605] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 47.363238][ T3605] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 47.373746][ T3605] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 47.382910][ T3605] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.404369][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.411811][ T3605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.420028][ T3605] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.427235][ T3605] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.478322][ T3605] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.491767][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.503591][ T3602] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.514554][ T3602] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.528128][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.540746][ T3605] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.550498][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.559423][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.568629][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.575818][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.596300][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 47.605525][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.613959][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.621212][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.629708][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.639269][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.649610][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 47.658955][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.672842][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 47.681953][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 47.691477][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.703963][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 47.713759][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 47.725907][ T3605] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 47.738589][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.747560][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 47.756934][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.776081][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.783659][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.797374][ T3605] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 47.908180][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 47.917110][ T3602] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 47.933907][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 47.944280][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 47.954807][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 47.962941][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 47.973172][ T3605] device veth0_vlan entered promiscuous mode [ 47.985103][ T3605] device veth1_vlan entered promiscuous mode [ 48.004169][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 48.012377][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 48.021510][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 48.031146][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 48.043741][ T3605] device veth0_macvtap entered promiscuous mode [ 48.054417][ T3605] device veth1_macvtap entered promiscuous mode [ 48.070142][ T3605] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 48.078639][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 48.087284][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 48.095588][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 48.104427][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 48.117863][ T3605] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 48.127181][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 48.136279][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 48.149289][ T3605] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.158609][ T3605] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.168893][ T3605] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.177780][ T3605] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.243142][ T49] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.251878][ T49] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 48.269194][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 48.283228][ T49] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.291773][ T49] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 48.301375][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/03/03 15:39:08 building call list... [ 48.436544][ T6] Bluetooth: hci0: command 0x0409 tx timeout [ 48.559593][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.787338][ T3599] can: request_module (can-proto-0) failed. [ 50.811930][ T3599] can: request_module (can-proto-0) failed. executing program [ 50.834038][ T3599] can: request_module (can-proto-0) failed. [ 50.857945][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.018206][ T3605] syz-executor.0 (3605) used greatest stack depth: 22760 bytes left