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 [ 30.194256][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.203640][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. 2022/02/11 14:48:47 fuzzer started 2022/02/11 14:48:48 connecting to host at 10.128.0.169:39907 2022/02/11 14:48:48 checking machine... 2022/02/11 14:48:48 checking revisions... 2022/02/11 14:48:48 testing simple program... syzkaller login: [ 51.392167][ T3596] cgroup: Unknown subsys name 'net' [ 51.527322][ T3596] cgroup: Unknown subsys name 'rlimit' [ 52.778449][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.786573][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.794681][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.803044][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.810645][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.817806][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.908884][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 52.967851][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.975540][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.983724][ T3598] device bridge_slave_0 entered promiscuous mode [ 52.993630][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.001336][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.009340][ T3598] device bridge_slave_1 entered promiscuous mode [ 53.034055][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.045251][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.068236][ T3598] team0: Port device team_slave_0 added [ 53.075737][ T3598] team0: Port device team_slave_1 added [ 53.094365][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.101429][ 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. [ 53.127494][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.140556][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.147598][ 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. [ 53.173606][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.197256][ T3598] [ 53.199735][ T3598] ============================= [ 53.204576][ T3598] WARNING: suspicious RCU usage [ 53.209458][ T3598] 5.17.0-rc3-syzkaller-01117-gb96a79253fff #0 Not tainted [ 53.216657][ T3598] ----------------------------- [ 53.221542][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.229723][ T3598] [ 53.229723][ T3598] other info that might help us debug this: [ 53.229723][ T3598] [ 53.239992][ T3598] [ 53.239992][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 53.248059][ T3598] 2 locks held by syz-executor.0/3598: [ 53.253600][ T3598] #0: ffffffff8d32cba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.263311][ T3598] #1: ffff888076c195f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.273608][ T3598] [ 53.273608][ T3598] stack backtrace: [ 53.279544][ T3598] CPU: 0 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01117-gb96a79253fff #0 [ 53.289963][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.300444][ T3598] Call Trace: [ 53.303738][ T3598] [ 53.306664][ T3598] dump_stack_lvl+0xcd/0x134 [ 53.311597][ T3598] hsr_node_get_first+0x9b/0xb0 [ 53.316475][ T3598] hsr_create_self_node+0x22d/0x650 [ 53.321688][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 53.326550][ T3598] hsr_newlink+0x315/0x730 [ 53.331057][ T3598] ? hsr_dellink+0x130/0x130 [ 53.335665][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 53.340689][ T3598] ? hsr_dellink+0x130/0x130 [ 53.345287][ T3598] __rtnl_newlink+0x107c/0x1760 [ 53.350235][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 53.354932][ T3598] ? is_bpf_text_address+0x77/0x170 [ 53.360132][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.364983][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 53.370526][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.376591][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.382413][ T3598] ? is_bpf_text_address+0x99/0x170 [ 53.387616][ T3598] ? kernel_text_address+0x39/0x80 [ 53.392729][ T3598] ? __kernel_text_address+0x9/0x30 [ 53.398274][ T3598] ? unwind_get_return_address+0x51/0x90 [ 53.403906][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 53.409106][ T3598] ? arch_stack_walk+0x93/0xe0 [ 53.413924][ T3598] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.419406][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.425045][ T3598] rtnl_newlink+0x64/0xa0 [ 53.429458][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 53.434481][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 53.439509][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.444037][ T3598] netlink_rcv_skb+0x153/0x420 [ 53.448888][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.453397][ T3598] ? netlink_ack+0xa60/0xa60 [ 53.457988][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.463623][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.468915][ T3598] netlink_unicast+0x539/0x7e0 [ 53.473682][ T3598] ? netlink_attachskb+0x880/0x880 [ 53.478788][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.485206][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.491535][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 53.496656][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.502376][ T3598] ? __check_object_size+0x16e/0x310 [ 53.507666][ T3598] netlink_sendmsg+0x904/0xe00 [ 53.512437][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.517377][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.523624][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.528560][ T3598] sock_sendmsg+0xcf/0x120 [ 53.532976][ T3598] __sys_sendto+0x21c/0x320 [ 53.537477][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.542845][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.548852][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 53.554400][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.559343][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.564205][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 53.568967][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 53.574163][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.580055][ T3598] do_syscall_64+0x35/0xb0 [ 53.584468][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.590357][ T3598] RIP: 0033:0x7ff319c48e1c [ 53.594766][ 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 [ 53.614367][ T3598] RSP: 002b:00007fff5905c170 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.622778][ T3598] RAX: ffffffffffffffda RBX: 00007ff31ace1320 RCX: 00007ff319c48e1c [ 53.630740][ T3598] RDX: 0000000000000048 RSI: 00007ff31ace1370 RDI: 0000000000000003 [ 53.638789][ T3598] RBP: 0000000000000000 R08: 00007fff5905c1c4 R09: 000000000000000c [ 53.646753][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.654721][ T3598] R13: 00007ff31ace1370 R14: 0000000000000003 R15: 0000000000000000 [ 53.662698][ T3598] [ 53.672511][ T3598] device hsr_slave_0 entered promiscuous mode [ 53.679963][ T3598] device hsr_slave_1 entered promiscuous mode [ 53.759455][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.770282][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.780442][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.790318][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.810883][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.818124][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.826618][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.833715][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.877762][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.891253][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.903636][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.912489][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.921498][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.934773][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.944227][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.953721][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.962924][ T3608] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.970068][ T3608] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.990966][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.999946][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.009550][ T3608] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.016979][ T3608] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.047055][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.063304][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.072379][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.081500][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.097167][ T3598] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 54.114219][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.132638][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.140910][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.149931][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.159080][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.167666][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.176595][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.185200][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 54.193851][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.214883][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.222732][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.230430][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.369221][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.378075][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.387222][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.395774][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.404660][ T3598] device veth0_vlan entered promiscuous mode [ 54.412186][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.420753][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.434690][ T3598] device veth1_vlan entered promiscuous mode [ 54.452151][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.462431][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.470962][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.480731][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.492112][ T3598] device veth0_macvtap entered promiscuous mode [ 54.501695][ T3598] device veth1_macvtap entered promiscuous mode [ 54.516898][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.524484][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.533693][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.542117][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.550861][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.561870][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.571457][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.580613][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.592717][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.601900][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.611798][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.620703][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.683276][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.697755][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.710642][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.720886][ T1307] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.729042][ T1307] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.737671][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/11 14:48:51 building call list... [ 54.859995][ T3609] Bluetooth: hci0: command 0x0409 tx timeout [ 54.974902][ T1307] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.847188][ T3589] can: request_module (can-proto-0) failed. [ 56.869464][ T3589] can: request_module (can-proto-0) failed. [ 56.890694][ T3589] can: request_module (can-proto-0) failed. executing program [ 57.198017][ T1307] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.199985][ T3598] syz-executor.0 (3598) used greatest stack depth: 22360 bytes left