DUID 00:04:00:dd:10:da:7f:85:b5:90:fb:fd:97:ac:66:d6:08:36 forked to background, child pid 3175 [ 30.063235][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.074010][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.149' (ECDSA) to the list of known hosts. 2022/02/10 14:47:37 fuzzer started 2022/02/10 14:47:37 connecting to host at 10.128.0.169:34431 2022/02/10 14:47:37 checking machine... 2022/02/10 14:47:37 checking revisions... 2022/02/10 14:47:38 testing simple program... syzkaller login: [ 46.485614][ T3596] cgroup: Unknown subsys name 'net' [ 46.597348][ T3596] cgroup: Unknown subsys name 'rlimit' [ 47.840591][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 47.848535][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 47.856808][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 47.864671][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 47.872814][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 47.880256][ T3602] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 47.962631][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 48.003843][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.011407][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.019291][ T3598] device bridge_slave_0 entered promiscuous mode [ 48.028231][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.035453][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.043352][ T3598] device bridge_slave_1 entered promiscuous mode [ 48.064336][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.075212][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.097436][ T3598] team0: Port device team_slave_0 added [ 48.105272][ T3598] team0: Port device team_slave_1 added [ 48.122247][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.129299][ 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. [ 48.155514][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.168033][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.175055][ 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. [ 48.201007][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.224734][ T3598] [ 48.227223][ T3598] ============================= [ 48.232104][ T3598] WARNING: suspicious RCU usage [ 48.236946][ T3598] 5.17.0-rc2-syzkaller-00918-gadc27288f229 #0 Not tainted [ 48.244089][ T3598] ----------------------------- [ 48.248938][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.257124][ T3598] [ 48.257124][ T3598] other info that might help us debug this: [ 48.257124][ T3598] [ 48.267404][ T3598] [ 48.267404][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 48.275535][ T3598] 2 locks held by syz-executor.0/3598: [ 48.281048][ T3598] #0: ffffffff8d32ca28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.290609][ T3598] #1: ffff88807bbed5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.300770][ T3598] [ 48.300770][ T3598] stack backtrace: [ 48.306662][ T3598] CPU: 1 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00918-gadc27288f229 #0 [ 48.317059][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.327099][ T3598] Call Trace: [ 48.330363][ T3598] [ 48.333281][ T3598] dump_stack_lvl+0xcd/0x134 [ 48.337861][ T3598] hsr_node_get_first+0x9b/0xb0 [ 48.342707][ T3598] hsr_create_self_node+0x22d/0x650 [ 48.347896][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 48.352733][ T3598] hsr_newlink+0x315/0x730 [ 48.357132][ T3598] ? hsr_dellink+0x130/0x130 [ 48.361709][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 48.366729][ T3598] ? hsr_dellink+0x130/0x130 [ 48.371310][ T3598] __rtnl_newlink+0x107c/0x1760 [ 48.376159][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 48.380840][ T3598] ? is_bpf_text_address+0x77/0x170 [ 48.386030][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 48.390868][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 48.396060][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.402116][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 48.407831][ T3598] ? is_bpf_text_address+0x99/0x170 [ 48.413162][ T3598] ? kernel_text_address+0x39/0x80 [ 48.418274][ T3598] ? __kernel_text_address+0x9/0x30 [ 48.423544][ T3598] ? unwind_get_return_address+0x51/0x90 [ 48.429159][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 48.434342][ T3598] ? arch_stack_walk+0x93/0xe0 [ 48.439149][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 48.444771][ T3598] rtnl_newlink+0x64/0xa0 [ 48.449083][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 48.454091][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 48.459104][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 48.463604][ T3598] netlink_rcv_skb+0x153/0x420 [ 48.468352][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 48.472853][ T3598] ? netlink_ack+0xa60/0xa60 [ 48.477439][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 48.482715][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 48.487991][ T3598] netlink_unicast+0x539/0x7e0 [ 48.492761][ T3598] ? netlink_attachskb+0x880/0x880 [ 48.497855][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.504085][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.510309][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 48.515321][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 48.521027][ T3598] ? __check_object_size+0x16e/0x310 [ 48.526301][ T3598] netlink_sendmsg+0x904/0xe00 [ 48.531057][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 48.535984][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.542213][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 48.547144][ T3598] sock_sendmsg+0xcf/0x120 [ 48.551549][ T3598] __sys_sendto+0x21c/0x320 [ 48.556055][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 48.561414][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.567391][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 48.572839][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 48.577679][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 48.582523][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 48.587273][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 48.592456][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 48.598332][ T3598] do_syscall_64+0x35/0xb0 [ 48.602735][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.608610][ T3598] RIP: 0033:0x7fa99d188e1c [ 48.613011][ 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 [ 48.632603][ T3598] RSP: 002b:00007ffe36046e30 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 48.640998][ T3598] RAX: ffffffffffffffda RBX: 00007fa99e221320 RCX: 00007fa99d188e1c [ 48.649039][ T3598] RDX: 0000000000000048 RSI: 00007fa99e221370 RDI: 0000000000000003 [ 48.657078][ T3598] RBP: 0000000000000000 R08: 00007ffe36046e84 R09: 000000000000000c [ 48.665031][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 48.672986][ T3598] R13: 00007fa99e221370 R14: 0000000000000003 R15: 0000000000000000 [ 48.680958][ T3598] [ 48.689006][ T3598] device hsr_slave_0 entered promiscuous mode [ 48.696633][ T3598] device hsr_slave_1 entered promiscuous mode [ 48.776515][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 48.786877][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 48.795621][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 48.804920][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 48.825934][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.833134][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.841181][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.848275][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.893518][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.906369][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.916804][ T141] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.925239][ T141] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.933923][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.947119][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.959480][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.968228][ T3261] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.975311][ T3261] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.986057][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.995443][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.004165][ T141] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.011302][ T141] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.034892][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.044435][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.053152][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.061951][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.071127][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.079752][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.088430][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.096731][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.105393][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.119766][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.132197][ T3598] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.142401][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.151840][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.172531][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.180041][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.195875][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 49.361189][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.369999][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.379928][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 49.389604][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.398736][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.406541][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.416810][ T3598] device veth0_vlan entered promiscuous mode [ 49.427495][ T3598] device veth1_vlan entered promiscuous mode [ 49.444808][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.453193][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.461463][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 49.469863][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.481754][ T3598] device veth0_macvtap entered promiscuous mode [ 49.491123][ T3598] device veth1_macvtap entered promiscuous mode [ 49.505415][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.514296][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.522458][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 49.530347][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 49.539225][ T3261] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.551264][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.558595][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 49.567788][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.578123][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.587294][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.596482][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.605583][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.664230][ T1303] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.672704][ T1303] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.684129][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.703591][ T1303] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.711962][ T1303] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.720346][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/10 14:47:41 building call list... [ 49.955768][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.995859][ T3589] can: request_module (can-proto-0) failed. [ 52.017618][ T3589] can: request_module (can-proto-0) failed. [ 52.037744][ T3589] can: request_module (can-proto-0) failed. executing program [ 52.241176][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0