DUID 00:04:1e:62:2e:d3:28:4c:47:2c:f6:06:4a:96:1e:52:1a:b0 forked to background, child pid 3176 [ 27.785914][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.797157][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.183' (ECDSA) to the list of known hosts. 2022/02/28 16:58:59 fuzzer started 2022/02/28 16:58:59 connecting to host at 10.128.0.169:35273 2022/02/28 16:58:59 checking machine... 2022/02/28 16:58:59 checking revisions... 2022/02/28 16:58:59 testing simple program... syzkaller login: [ 47.966037][ T3604] cgroup: Unknown subsys name 'net' [ 48.097232][ T3604] cgroup: Unknown subsys name 'rlimit' [ 49.341795][ T3609] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.349748][ T3609] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.357324][ T3609] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.365385][ T3609] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.373578][ T3609] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.380953][ T3609] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 49.473046][ T3606] chnl_net:caif_netlink_parms(): no params data found [ 49.516385][ T3606] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.524654][ T3606] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.533124][ T3606] device bridge_slave_0 entered promiscuous mode [ 49.542837][ T3606] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.550069][ T3606] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.558405][ T3606] device bridge_slave_1 entered promiscuous mode [ 49.579338][ T3606] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 49.591585][ T3606] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 49.613345][ T3606] team0: Port device team_slave_0 added [ 49.620971][ T3606] team0: Port device team_slave_1 added [ 49.639145][ T3606] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.646249][ T3606] 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. [ 49.672417][ T3606] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.685593][ T3606] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.692592][ T3606] 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. [ 49.719004][ T3606] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 49.742571][ T3606] [ 49.745014][ T3606] ============================= [ 49.749848][ T3606] WARNING: suspicious RCU usage [ 49.754888][ T3606] 5.17.0-rc4-syzkaller-01371-ga4fbfdd7a160 #0 Not tainted [ 49.762086][ T3606] ----------------------------- [ 49.767052][ T3606] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 49.775425][ T3606] [ 49.775425][ T3606] other info that might help us debug this: [ 49.775425][ T3606] [ 49.785738][ T3606] [ 49.785738][ T3606] rcu_scheduler_active = 2, debug_locks = 1 [ 49.793842][ T3606] 2 locks held by syz-executor.0/3606: [ 49.799320][ T3606] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 49.808803][ T3606] #1: ffff88801deed5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 49.818986][ T3606] [ 49.818986][ T3606] stack backtrace: [ 49.824929][ T3606] CPU: 0 PID: 3606 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01371-ga4fbfdd7a160 #0 [ 49.835440][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.845486][ T3606] Call Trace: [ 49.848763][ T3606] [ 49.851683][ T3606] dump_stack_lvl+0xcd/0x134 [ 49.856298][ T3606] hsr_node_get_first+0x9b/0xb0 [ 49.861148][ T3606] hsr_create_self_node+0x22d/0x650 [ 49.866340][ T3606] hsr_dev_finalize+0x2c1/0x7d0 [ 49.871189][ T3606] hsr_newlink+0x315/0x730 [ 49.875609][ T3606] ? hsr_dellink+0x130/0x130 [ 49.880210][ T3606] ? rtnl_create_link+0x7e8/0xc00 [ 49.885270][ T3606] ? hsr_dellink+0x130/0x130 [ 49.889863][ T3606] __rtnl_newlink+0x107c/0x1760 [ 49.894726][ T3606] ? rtnl_setlink+0x3c0/0x3c0 [ 49.899415][ T3606] ? is_bpf_text_address+0x77/0x170 [ 49.904622][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 49.909561][ T3606] ? unwind_next_frame+0xee1/0x1ce0 [ 49.914787][ T3606] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.920943][ T3606] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.926687][ T3606] ? is_bpf_text_address+0x99/0x170 [ 49.931896][ T3606] ? kernel_text_address+0x39/0x80 [ 49.937022][ T3606] ? __kernel_text_address+0x9/0x30 [ 49.942224][ T3606] ? unwind_get_return_address+0x51/0x90 [ 49.947863][ T3606] ? create_prof_cpu_mask+0x20/0x20 [ 49.953059][ T3606] ? arch_stack_walk+0x93/0xe0 [ 49.957864][ T3606] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 49.963361][ T3606] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.968907][ T3606] rtnl_newlink+0x64/0xa0 [ 49.973237][ T3606] ? __rtnl_newlink+0x1760/0x1760 [ 49.978260][ T3606] rtnetlink_rcv_msg+0x413/0xb80 [ 49.983217][ T3606] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.988079][ T3606] netlink_rcv_skb+0x153/0x420 [ 49.992841][ T3606] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.997605][ T3606] ? netlink_ack+0xa60/0xa60 [ 50.002187][ T3606] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.007477][ T3606] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.012761][ T3606] netlink_unicast+0x539/0x7e0 [ 50.017560][ T3606] ? netlink_attachskb+0x880/0x880 [ 50.022673][ T3606] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.028916][ T3606] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.035174][ T3606] ? __phys_addr_symbol+0x2c/0x70 [ 50.040208][ T3606] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 50.045923][ T3606] ? __check_object_size+0x16e/0x310 [ 50.051212][ T3606] netlink_sendmsg+0x904/0xe00 [ 50.055977][ T3606] ? netlink_unicast+0x7e0/0x7e0 [ 50.060917][ T3606] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.067254][ T3606] ? netlink_unicast+0x7e0/0x7e0 [ 50.072202][ T3606] sock_sendmsg+0xcf/0x120 [ 50.076617][ T3606] __sys_sendto+0x21c/0x320 [ 50.081224][ T3606] ? __ia32_sys_getpeername+0xb0/0xb0 [ 50.086584][ T3606] ? lockdep_hardirqs_on+0x79/0x100 [ 50.091786][ T3606] ? __context_tracking_exit+0xb8/0xe0 [ 50.097960][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 50.103183][ T3606] __x64_sys_sendto+0xdd/0x1b0 [ 50.108068][ T3606] ? lockdep_hardirqs_on+0x79/0x100 [ 50.113363][ T3606] ? syscall_enter_from_user_mode+0x21/0x70 [ 50.119310][ T3606] do_syscall_64+0x35/0xb0 [ 50.123736][ T3606] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.129636][ T3606] RIP: 0033:0x7fcf86b7ae0c [ 50.134050][ T3606] 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 [ 50.153659][ T3606] RSP: 002b:00007ffdb9116f70 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 50.162088][ T3606] RAX: ffffffffffffffda RBX: 00007fcf87c13320 RCX: 00007fcf86b7ae0c [ 50.170057][ T3606] RDX: 0000000000000048 RSI: 00007fcf87c13370 RDI: 0000000000000003 [ 50.178016][ T3606] RBP: 0000000000000000 R08: 00007ffdb9116fc4 R09: 000000000000000c [ 50.185986][ T3606] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 50.194047][ T3606] R13: 00007fcf87c13370 R14: 0000000000000003 R15: 0000000000000000 [ 50.202025][ T3606] [ 50.210007][ T3606] device hsr_slave_0 entered promiscuous mode [ 50.217161][ T3606] device hsr_slave_1 entered promiscuous mode [ 50.295371][ T3606] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.305874][ T3606] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.315218][ T3606] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.324730][ T3606] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.347127][ T3606] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.354527][ T3606] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.362574][ T3606] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.369851][ T3606] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.415332][ T3606] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.427700][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.439210][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.448091][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.457227][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.470297][ T3606] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.480204][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 50.489325][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.498123][ T140] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.505362][ T140] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.517975][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 50.528461][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.537845][ T3617] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.544975][ T3617] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.558606][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 50.571077][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 50.579638][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 50.589315][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.598418][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.611142][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.619766][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.635075][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.643714][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.653246][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.661955][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.674944][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.693032][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.701139][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.714378][ T3606] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 50.821535][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.830201][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.845641][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.854646][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.863984][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.873115][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.882982][ T3606] device veth0_vlan entered promiscuous mode [ 50.894709][ T3606] device veth1_vlan entered promiscuous mode [ 50.913659][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.921816][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.929799][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.938627][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.949655][ T3606] device veth0_macvtap entered promiscuous mode [ 50.959170][ T3606] device veth1_macvtap entered promiscuous mode [ 50.974300][ T3606] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.981816][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.989941][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.998572][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.007260][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.019712][ T3606] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.028616][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.037177][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.048245][ T3606] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.058254][ T3606] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.067776][ T3606] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.079307][ T3606] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.143788][ T90] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.158626][ T90] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.170123][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 51.180186][ T90] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.190277][ T90] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.199236][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/28 16:59:03 building call list... [ 51.449838][ T1098] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.561168][ T3600] can: request_module (can-proto-0) failed. [ 53.584519][ T3600] can: request_module (can-proto-0) failed. [ 53.605081][ T3600] can: request_module (can-proto-0) failed. executing program [ 53.730315][ T1098] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.962798][ T3606] syz-executor.0 (3606) used greatest stack depth: 22488 bytes left