DUID 00:04:1e:62:2e:d3:28:4c:47:2c:f6:06:4a:96:1e:52:1a:b0 forked to background, child pid 3174 [ 28.125525][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.136566][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.54' (ECDSA) to the list of known hosts. 2022/02/28 15:19:31 fuzzer started 2022/02/28 15:19:31 connecting to host at 10.128.0.169:33057 2022/02/28 15:19:31 checking machine... 2022/02/28 15:19:31 checking revisions... 2022/02/28 15:19:31 testing simple program... syzkaller login: [ 44.206661][ T3596] cgroup: Unknown subsys name 'net' [ 44.285975][ T3596] cgroup: Unknown subsys name 'rlimit' [ 45.570245][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 45.578766][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 45.587243][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 45.595452][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 45.603607][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 45.611244][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 45.704831][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 45.751795][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.760206][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.768577][ T3598] device bridge_slave_0 entered promiscuous mode [ 45.777946][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.785238][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.793836][ T3598] device bridge_slave_1 entered promiscuous mode [ 45.818511][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.830344][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.853193][ T3598] team0: Port device team_slave_0 added [ 45.861213][ T3598] team0: Port device team_slave_1 added [ 45.879985][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.887005][ 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. [ 45.913584][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.927232][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.934466][ 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. [ 45.961090][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.987765][ T3598] [ 45.990352][ T3598] ============================= [ 45.995192][ T3598] WARNING: suspicious RCU usage [ 46.000100][ T3598] 5.17.0-rc4-syzkaller-01364-gc62dd8a58d19 #0 Not tainted [ 46.007299][ T3598] ----------------------------- [ 46.012197][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 46.020407][ T3598] [ 46.020407][ T3598] other info that might help us debug this: [ 46.020407][ T3598] [ 46.030718][ T3598] [ 46.030718][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 46.038940][ T3598] 2 locks held by syz-executor.0/3598: [ 46.044421][ T3598] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 46.054141][ T3598] #1: ffff88806ecd55f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 46.064427][ T3598] [ 46.064427][ T3598] stack backtrace: [ 46.070364][ T3598] CPU: 0 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01364-gc62dd8a58d19 #0 [ 46.081733][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.091912][ T3598] Call Trace: [ 46.095182][ T3598] [ 46.098097][ T3598] dump_stack_lvl+0xcd/0x134 [ 46.102689][ T3598] hsr_node_get_first+0x9b/0xb0 [ 46.107568][ T3598] hsr_create_self_node+0x22d/0x650 [ 46.112855][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 46.117733][ T3598] hsr_newlink+0x315/0x730 [ 46.122453][ T3598] ? hsr_dellink+0x130/0x130 [ 46.127077][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 46.132124][ T3598] ? hsr_dellink+0x130/0x130 [ 46.136863][ T3598] __rtnl_newlink+0x107c/0x1760 [ 46.141733][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 46.146656][ T3598] ? is_bpf_text_address+0x77/0x170 [ 46.151861][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 46.156799][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 46.161991][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.168066][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 46.173940][ T3598] ? is_bpf_text_address+0x99/0x170 [ 46.179253][ T3598] ? kernel_text_address+0x39/0x80 [ 46.184595][ T3598] ? __kernel_text_address+0x9/0x30 [ 46.189843][ T3598] ? unwind_get_return_address+0x51/0x90 [ 46.195794][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 46.201014][ T3598] ? arch_stack_walk+0x93/0xe0 [ 46.205809][ T3598] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 46.211270][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 46.216919][ T3598] rtnl_newlink+0x64/0xa0 [ 46.221242][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 46.226292][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 46.231242][ T3598] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 46.236034][ T3598] netlink_rcv_skb+0x153/0x420 [ 46.240920][ T3598] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 46.245750][ T3598] ? netlink_ack+0xa60/0xa60 [ 46.250383][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 46.255867][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 46.261259][ T3598] netlink_unicast+0x539/0x7e0 [ 46.266049][ T3598] ? netlink_attachskb+0x880/0x880 [ 46.271314][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 46.277575][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 46.283913][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 46.288943][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 46.294766][ T3598] ? __check_object_size+0x16e/0x310 [ 46.300072][ T3598] netlink_sendmsg+0x904/0xe00 [ 46.304946][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 46.309903][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 46.316164][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 46.321133][ T3598] sock_sendmsg+0xcf/0x120 [ 46.325626][ T3598] __sys_sendto+0x21c/0x320 [ 46.330313][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 46.335745][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 46.340963][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 46.346514][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 46.351436][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 46.356263][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 46.361640][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 46.367538][ T3598] do_syscall_64+0x35/0xb0 [ 46.371959][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.377937][ T3598] RIP: 0033:0x7f44d08b7e0c [ 46.382343][ 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 [ 46.402541][ T3598] RSP: 002b:00007ffc2e550170 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 46.410946][ T3598] RAX: ffffffffffffffda RBX: 00007f44d1950320 RCX: 00007f44d08b7e0c [ 46.418912][ T3598] RDX: 0000000000000048 RSI: 00007f44d1950370 RDI: 0000000000000003 [ 46.427118][ T3598] RBP: 0000000000000000 R08: 00007ffc2e5501c4 R09: 000000000000000c [ 46.435181][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 46.443244][ T3598] R13: 00007f44d1950370 R14: 0000000000000003 R15: 0000000000000000 [ 46.451232][ T3598] [ 46.457974][ T3598] device hsr_slave_0 entered promiscuous mode [ 46.465384][ T3598] device hsr_slave_1 entered promiscuous mode [ 46.547300][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 46.558255][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 46.567894][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 46.576613][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 46.599553][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.606868][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.614892][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.622031][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.669011][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.682241][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.693383][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.702940][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.711175][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.725299][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.736699][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 46.745595][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 46.754850][ T919] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.762172][ T919] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.774252][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 46.783275][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 46.791837][ T3609] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.798950][ T3609] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.822900][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 46.832200][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 46.841311][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 46.850783][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 46.859705][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 46.868471][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 46.877638][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 46.886074][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 46.899178][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 46.907003][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 46.915668][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 46.926366][ T3598] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 46.947730][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 46.955704][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 46.963481][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 47.080530][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 47.089681][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 47.098556][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 47.109892][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 47.119839][ T3598] device veth0_vlan entered promiscuous mode [ 47.128880][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 47.136869][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 47.147300][ T3598] device veth1_vlan entered promiscuous mode [ 47.166906][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 47.175231][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 47.184354][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 47.193315][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 47.206547][ T3598] device veth0_macvtap entered promiscuous mode [ 47.216311][ T3598] device veth1_macvtap entered promiscuous mode [ 47.231328][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 47.239280][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 47.247616][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 47.255985][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 47.264755][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 47.276989][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 47.285212][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 47.294155][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 47.306251][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.316008][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.325968][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.335498][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.401751][ T332] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.410236][ T332] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.421815][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 47.441769][ T54] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.450203][ T54] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.461905][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/28 15:19:35 building call list... [ 47.701819][ T332] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.787248][ T3595] can: request_module (can-proto-0) failed. [ 49.810559][ T3595] can: request_module (can-proto-0) failed. [ 49.831737][ T3595] can: request_module (can-proto-0) failed. executing program [ 49.989552][ T332] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.210722][ T3598] syz-executor.0 (3598) used greatest stack depth: 22528 bytes left