forked to background, child pid 3173 [ 28.289836][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.300951][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 28.682710][ T3266] sshd (3266) used greatest stack depth: 22832 bytes left OK syzkaller Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. 2022/02/10 06:20:10 fuzzer started 2022/02/10 06:20:10 connecting to host at 10.128.0.169:45781 2022/02/10 06:20:10 checking machine... 2022/02/10 06:20:10 checking revisions... 2022/02/10 06:20:10 testing simple program... syzkaller login: [ 50.891695][ T3595] cgroup: Unknown subsys name 'net' [ 51.024487][ T3595] cgroup: Unknown subsys name 'rlimit' [ 52.239036][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.247897][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.255639][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.264235][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.272120][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.279892][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.374762][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 52.420507][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.428087][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.436028][ T3597] device bridge_slave_0 entered promiscuous mode [ 52.445338][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.452705][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.460851][ T3597] device bridge_slave_1 entered promiscuous mode [ 52.482910][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.494024][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.517203][ T3597] team0: Port device team_slave_0 added [ 52.525903][ T3597] team0: Port device team_slave_1 added [ 52.543737][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.551249][ T3597] 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. [ 52.577347][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.590438][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.597460][ T3597] 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. [ 52.623881][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.649917][ T3597] [ 52.652348][ T3597] ============================= [ 52.657686][ T3597] WARNING: suspicious RCU usage [ 52.662542][ T3597] 5.17.0-rc2-syzkaller-00887-g1127170d457e #0 Not tainted [ 52.669691][ T3597] ----------------------------- [ 52.674547][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.682796][ T3597] [ 52.682796][ T3597] other info that might help us debug this: [ 52.682796][ T3597] [ 52.693072][ T3597] [ 52.693072][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 52.701190][ T3597] 2 locks held by syz-executor.0/3597: [ 52.706656][ T3597] #0: ffffffff8d32ca28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.716304][ T3597] #1: ffff8880769455f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.726505][ T3597] [ 52.726505][ T3597] stack backtrace: [ 52.732440][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00887-g1127170d457e #0 [ 52.742867][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.752951][ T3597] Call Trace: [ 52.756248][ T3597] [ 52.759180][ T3597] dump_stack_lvl+0xcd/0x134 [ 52.763786][ T3597] hsr_node_get_first+0x9b/0xb0 [ 52.768663][ T3597] hsr_create_self_node+0x22d/0x650 [ 52.773894][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 52.778782][ T3597] hsr_newlink+0x315/0x730 [ 52.783234][ T3597] ? hsr_dellink+0x130/0x130 [ 52.787843][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 52.792881][ T3597] ? hsr_dellink+0x130/0x130 [ 52.797479][ T3597] __rtnl_newlink+0x107c/0x1760 [ 52.802355][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 52.807049][ T3597] ? is_bpf_text_address+0x77/0x170 [ 52.812259][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.817124][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 52.823889][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.829962][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.835708][ T3597] ? is_bpf_text_address+0x99/0x170 [ 52.840929][ T3597] ? kernel_text_address+0x39/0x80 [ 52.846048][ T3597] ? __kernel_text_address+0x9/0x30 [ 52.851265][ T3597] ? unwind_get_return_address+0x51/0x90 [ 52.856928][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 52.862152][ T3597] ? arch_stack_walk+0x93/0xe0 [ 52.866988][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.872621][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.878208][ T3597] rtnl_newlink+0x64/0xa0 [ 52.882573][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 52.887621][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 52.892570][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.897096][ T3597] netlink_rcv_skb+0x153/0x420 [ 52.901871][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.906377][ T3597] ? netlink_ack+0xa60/0xa60 [ 52.910968][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.916352][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.921648][ T3597] netlink_unicast+0x539/0x7e0 [ 52.926428][ T3597] ? netlink_attachskb+0x880/0x880 [ 52.931550][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.937829][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.944083][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 52.949119][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.954849][ T3597] ? __check_object_size+0x16e/0x310 [ 52.960144][ T3597] netlink_sendmsg+0x904/0xe00 [ 52.964922][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.969881][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.976174][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 52.981138][ T3597] sock_sendmsg+0xcf/0x120 [ 52.985570][ T3597] __sys_sendto+0x21c/0x320 [ 52.990082][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.995462][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.001474][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 53.006947][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.012767][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.017641][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 53.022409][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 53.027616][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.033522][ T3597] do_syscall_64+0x35/0xb0 [ 53.037946][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.043842][ T3597] RIP: 0033:0x7eff629d4e1c [ 53.048265][ T3597] 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 [ 53.067872][ T3597] RSP: 002b:00007ffd52896d80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.076381][ T3597] RAX: ffffffffffffffda RBX: 00007eff63a6d320 RCX: 00007eff629d4e1c [ 53.084359][ T3597] RDX: 0000000000000048 RSI: 00007eff63a6d370 RDI: 0000000000000003 [ 53.092335][ T3597] RBP: 0000000000000000 R08: 00007ffd52896dd4 R09: 000000000000000c [ 53.100310][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.108457][ T3597] R13: 00007eff63a6d370 R14: 0000000000000003 R15: 0000000000000000 [ 53.116453][ T3597] [ 53.126542][ T3597] device hsr_slave_0 entered promiscuous mode [ 53.133586][ T3597] device hsr_slave_1 entered promiscuous mode [ 53.249514][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.267227][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.280094][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.290206][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.331302][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.338666][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.346823][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.354059][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.401360][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.413841][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.425018][ T3607] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.442061][ T3607] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.450877][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.463314][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.473663][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.482940][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.491850][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.498999][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.511080][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.519866][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.528626][ T3608] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.535674][ T3608] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.548893][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.560877][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.578039][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.587182][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.595936][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.604999][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.613744][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.622157][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.632291][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.640221][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready executing program [ 53.649028][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.661237][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.680258][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.688798][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.701534][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.879475][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.888698][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.897270][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.906192][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.916631][ T3597] device veth0_vlan entered promiscuous mode [ 53.926337][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.934318][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.946660][ T3597] device veth1_vlan entered promiscuous mode [ 53.964631][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.972814][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.981718][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.991140][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.002516][ T3597] device veth0_macvtap entered promiscuous mode [ 54.012230][ T3597] device veth1_macvtap entered promiscuous mode [ 54.026395][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.033897][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.042522][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.050628][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.059191][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.072031][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.079477][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.088617][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.100986][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.110506][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.119811][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.129388][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.192950][ T1037] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.206421][ T1037] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.222176][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.238395][ T1037] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.246386][ T1037] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.256741][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/10 06:20:14 building call list... [ 54.317771][ T35] Bluetooth: hci0: command 0x0409 tx timeout [ 54.526318][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 56.618822][ T3588] can: request_module (can-proto-0) failed. [ 56.640768][ T3588] can: request_module (can-proto-0) failed. [ 56.661470][ T3588] can: request_module (can-proto-0) failed. [ 56.719434][ T3597] syz-executor.0 (3597) used greatest stack depth: 22592 bytes left [ 56.828495][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0