DUID 00:04:99:cf:64:81:91:3a:f8:b3:88:a8:0e:05:2a:78:8a:13 forked to background, child pid 3171 [ 27.686861][ T3172] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.696290][ T3172] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.106' (ECDSA) to the list of known hosts. 2022/02/16 08:55:51 fuzzer started 2022/02/16 08:55:51 connecting to host at 10.128.0.169:40339 2022/02/16 08:55:51 checking machine... 2022/02/16 08:55:51 checking revisions... 2022/02/16 08:55:51 testing simple program... syzkaller login: [ 42.478973][ T3593] cgroup: Unknown subsys name 'net' [ 42.583814][ T3593] cgroup: Unknown subsys name 'rlimit' [ 43.865927][ T3597] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 43.874352][ T3597] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 43.882155][ T3597] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 43.890860][ T3597] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 43.898916][ T3597] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 43.906122][ T3597] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 43.995516][ T3595] chnl_net:caif_netlink_parms(): no params data found [ 44.037244][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.045006][ T3595] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.053157][ T3595] device bridge_slave_0 entered promiscuous mode [ 44.062318][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.069489][ T3595] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.077198][ T3595] device bridge_slave_1 entered promiscuous mode [ 44.097823][ T3595] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 44.110441][ T3595] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 44.132703][ T3595] team0: Port device team_slave_0 added [ 44.140389][ T3595] team0: Port device team_slave_1 added [ 44.157764][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.164716][ T3595] 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. [ 44.190811][ T3595] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.203133][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.210128][ T3595] 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. [ 44.236047][ T3595] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 44.260040][ T3595] [ 44.262472][ T3595] ============================= [ 44.267315][ T3595] WARNING: suspicious RCU usage [ 44.272194][ T3595] 5.17.0-rc4-next-20220216-syzkaller #0 Not tainted [ 44.278779][ T3595] ----------------------------- [ 44.283602][ T3595] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 44.291789][ T3595] [ 44.291789][ T3595] other info that might help us debug this: [ 44.291789][ T3595] [ 44.302028][ T3595] [ 44.302028][ T3595] rcu_scheduler_active = 2, debug_locks = 1 [ 44.310108][ T3595] 2 locks held by syz-executor.0/3595: [ 44.315580][ T3595] #0: ffffffff8d3390e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 44.325030][ T3595] #1: ffff88801e8455f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 44.335200][ T3595] [ 44.335200][ T3595] stack backtrace: [ 44.341128][ T3595] CPU: 1 PID: 3595 Comm: syz-executor.0 Not tainted 5.17.0-rc4-next-20220216-syzkaller #0 [ 44.351006][ T3595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.361040][ T3595] Call Trace: [ 44.364299][ T3595] [ 44.367212][ T3595] dump_stack_lvl+0xcd/0x134 [ 44.372138][ T3595] hsr_node_get_first+0x9b/0xb0 [ 44.376993][ T3595] hsr_create_self_node+0x22d/0x650 [ 44.382183][ T3595] hsr_dev_finalize+0x2c1/0x7d0 [ 44.387025][ T3595] hsr_newlink+0x315/0x730 [ 44.391432][ T3595] ? hsr_dellink+0x130/0x130 [ 44.396010][ T3595] ? rtnl_create_link+0x7e8/0xc00 [ 44.401036][ T3595] ? hsr_dellink+0x130/0x130 [ 44.405617][ T3595] __rtnl_newlink+0x107c/0x1760 [ 44.410462][ T3595] ? rtnl_setlink+0x3c0/0x3c0 [ 44.415127][ T3595] ? is_bpf_text_address+0x77/0x170 [ 44.420316][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 44.425154][ T3595] ? unwind_next_frame+0xee1/0x1ce0 [ 44.430337][ T3595] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 44.436396][ T3595] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 44.442108][ T3595] ? is_bpf_text_address+0x99/0x170 [ 44.447295][ T3595] ? kernel_text_address+0x39/0x80 [ 44.452391][ T3595] ? __kernel_text_address+0x9/0x30 [ 44.457572][ T3595] ? unwind_get_return_address+0x51/0x90 [ 44.463208][ T3595] ? create_prof_cpu_mask+0x20/0x20 [ 44.468410][ T3595] ? arch_stack_walk+0x93/0xe0 [ 44.473197][ T3595] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 44.478654][ T3595] ? rcu_read_lock_sched_held+0x3a/0x70 [ 44.484187][ T3595] rtnl_newlink+0x64/0xa0 [ 44.488498][ T3595] ? __rtnl_newlink+0x1760/0x1760 [ 44.493503][ T3595] rtnetlink_rcv_msg+0x413/0xb80 [ 44.498425][ T3595] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 44.503182][ T3595] netlink_rcv_skb+0x153/0x420 [ 44.507951][ T3595] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 44.512736][ T3595] ? netlink_ack+0xa80/0xa80 [ 44.517315][ T3595] ? netlink_deliver_tap+0x1a2/0xc40 [ 44.522595][ T3595] ? netlink_deliver_tap+0x1b1/0xc40 [ 44.527868][ T3595] netlink_unicast+0x539/0x7e0 [ 44.532635][ T3595] ? netlink_attachskb+0x880/0x880 [ 44.537731][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 44.543965][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 44.550192][ T3595] ? __phys_addr_symbol+0x2c/0x70 [ 44.555218][ T3595] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 44.560924][ T3595] ? __check_object_size+0x16c/0x4f0 [ 44.566208][ T3595] netlink_sendmsg+0x904/0xe00 [ 44.570960][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 44.575881][ T3595] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 44.582117][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 44.587054][ T3595] sock_sendmsg+0xcf/0x120 [ 44.591474][ T3595] __sys_sendto+0x21c/0x320 [ 44.595964][ T3595] ? __ia32_sys_getpeername+0xb0/0xb0 [ 44.601326][ T3595] ? lockdep_hardirqs_on+0x79/0x100 [ 44.606533][ T3595] ? __context_tracking_exit+0xb8/0xe0 [ 44.611983][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 44.616841][ T3595] __x64_sys_sendto+0xdd/0x1b0 [ 44.621593][ T3595] ? lockdep_hardirqs_on+0x79/0x100 [ 44.626777][ T3595] ? syscall_enter_from_user_mode+0x21/0x70 [ 44.632671][ T3595] do_syscall_64+0x35/0xb0 [ 44.637073][ T3595] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 44.642954][ T3595] RIP: 0033:0x7ff60f9a6e1c [ 44.647353][ T3595] 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 [ 44.666956][ T3595] RSP: 002b:00007ffee56925d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 44.675352][ T3595] RAX: ffffffffffffffda RBX: 00007ff610a3f320 RCX: 00007ff60f9a6e1c [ 44.683301][ T3595] RDX: 0000000000000048 RSI: 00007ff610a3f370 RDI: 0000000000000003 [ 44.691251][ T3595] RBP: 0000000000000000 R08: 00007ffee5692624 R09: 000000000000000c [ 44.699201][ T3595] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 44.707150][ T3595] R13: 00007ff610a3f370 R14: 0000000000000003 R15: 0000000000000000 [ 44.715112][ T3595] [ 44.724692][ T3595] device hsr_slave_0 entered promiscuous mode [ 44.731964][ T3595] device hsr_slave_1 entered promiscuous mode [ 44.809018][ T3595] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 44.819681][ T3595] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 44.828521][ T3595] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 44.837097][ T3595] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 44.858960][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.866104][ T3595] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.873917][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.880997][ T3595] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.923084][ T3595] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.936072][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.946415][ T141] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.956485][ T141] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.965088][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 44.978902][ T3595] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.990571][ T3257] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.999188][ T3257] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.006235][ T3257] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.020143][ T3257] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 45.028865][ T3257] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 45.037177][ T3257] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.044299][ T3257] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.054190][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 45.075297][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 45.084670][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 45.093673][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 45.102871][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 45.111735][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 45.125134][ T3595] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 45.135719][ T3595] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 45.147112][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 45.155434][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 45.163873][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 45.173055][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 45.181478][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 45.190532][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 45.208779][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 45.216159][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 45.225294][ T3595] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 45.327496][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 45.336018][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 45.354870][ T3595] device veth0_vlan entered promiscuous mode [ 45.362042][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 45.370405][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 45.380223][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 45.388467][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 45.400281][ T3595] device veth1_vlan entered promiscuous mode [ 45.416968][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 45.425140][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 45.433248][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 45.441727][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 45.453627][ T3595] device veth0_macvtap entered promiscuous mode [ 45.463201][ T3595] device veth1_macvtap entered promiscuous mode [ 45.477339][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 45.485634][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 45.493821][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 45.501921][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 45.510488][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 45.522318][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 45.530523][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 45.539336][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 45.550445][ T3595] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 45.559842][ T3595] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 45.568839][ T3595] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 45.579004][ T3595] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 45.635751][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 45.652220][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 45.662744][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 45.672019][ T1320] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 45.680128][ T1320] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 45.688792][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/16 08:55:55 building call list... [ 48.099011][ T3587] can: request_module (can-proto-0) failed. [ 48.121364][ T3587] can: request_module (can-proto-0) failed. [ 48.142587][ T3587] can: request_module (can-proto-0) failed. executing program [ 48.715089][ T1320] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0