DUID 00:04:ac:d3:e9:6f:d6:cf:30:00:cb:75:86:98:6a:d5:8e:9b forked to background, child pid 3172 [ 27.486682][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.496785][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.82' (ECDSA) to the list of known hosts. 2022/02/18 20:08:09 fuzzer started 2022/02/18 20:08:09 connecting to host at 10.128.0.169:42063 2022/02/18 20:08:09 checking machine... 2022/02/18 20:08:09 checking revisions... 2022/02/18 20:08:09 testing simple program... syzkaller login: [ 48.905807][ T3594] cgroup: Unknown subsys name 'net' [ 49.036006][ T3594] cgroup: Unknown subsys name 'rlimit' [ 50.273125][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 50.281204][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 50.288704][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 50.297120][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 50.305113][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 50.312577][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.396866][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 50.441613][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.449607][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.457479][ T3596] device bridge_slave_0 entered promiscuous mode [ 50.466645][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.473825][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.481763][ T3596] device bridge_slave_1 entered promiscuous mode [ 50.503454][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.514410][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.536959][ T3596] team0: Port device team_slave_0 added [ 50.544337][ T3596] team0: Port device team_slave_1 added [ 50.562064][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.569007][ T3596] 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. [ 50.595133][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.607769][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.614916][ T3596] 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. [ 50.640842][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.664605][ T3596] [ 50.667057][ T3596] ============================= [ 50.671947][ T3596] WARNING: suspicious RCU usage [ 50.676890][ T3596] 5.17.0-rc4-syzkaller-01349-g9087c6ff8dfe #0 Not tainted [ 50.684139][ T3596] ----------------------------- [ 50.688983][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 50.697196][ T3596] [ 50.697196][ T3596] other info that might help us debug this: [ 50.697196][ T3596] [ 50.707466][ T3596] [ 50.707466][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 50.715738][ T3596] 2 locks held by syz-executor.0/3596: [ 50.721230][ T3596] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 50.730701][ T3596] #1: ffff88801b2a95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 50.740878][ T3596] [ 50.740878][ T3596] stack backtrace: [ 50.746756][ T3596] CPU: 1 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01349-g9087c6ff8dfe #0 [ 50.757156][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.767397][ T3596] Call Trace: [ 50.770775][ T3596] [ 50.773707][ T3596] dump_stack_lvl+0xcd/0x134 [ 50.778313][ T3596] hsr_node_get_first+0x9b/0xb0 [ 50.783156][ T3596] hsr_create_self_node+0x22d/0x650 [ 50.788394][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 50.793232][ T3596] hsr_newlink+0x315/0x730 [ 50.797721][ T3596] ? hsr_dellink+0x130/0x130 [ 50.802313][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 50.807328][ T3596] ? hsr_dellink+0x130/0x130 [ 50.811900][ T3596] __rtnl_newlink+0x107c/0x1760 [ 50.816746][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 50.821415][ T3596] ? is_bpf_text_address+0x77/0x170 [ 50.826616][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 50.831453][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 50.836639][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.842693][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 50.848416][ T3596] ? is_bpf_text_address+0x99/0x170 [ 50.853614][ T3596] ? kernel_text_address+0x39/0x80 [ 50.858711][ T3596] ? __kernel_text_address+0x9/0x30 [ 50.863993][ T3596] ? unwind_get_return_address+0x51/0x90 [ 50.869623][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 50.874805][ T3596] ? arch_stack_walk+0x93/0xe0 [ 50.879590][ T3596] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 50.885049][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 50.890583][ T3596] rtnl_newlink+0x64/0xa0 [ 50.894901][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 50.899910][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 50.904851][ T3596] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.909623][ T3596] netlink_rcv_skb+0x153/0x420 [ 50.914392][ T3596] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.919156][ T3596] ? netlink_ack+0xa60/0xa60 [ 50.923776][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.929071][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.934363][ T3596] netlink_unicast+0x539/0x7e0 [ 50.939159][ T3596] ? netlink_attachskb+0x880/0x880 [ 50.944271][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.950502][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.956746][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 50.961755][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 50.967462][ T3596] ? __check_object_size+0x16e/0x310 [ 50.972748][ T3596] netlink_sendmsg+0x904/0xe00 [ 50.977508][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 50.982444][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.988672][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 50.993600][ T3596] sock_sendmsg+0xcf/0x120 [ 50.998005][ T3596] __sys_sendto+0x21c/0x320 [ 51.002505][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.007870][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 51.013174][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 51.018766][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.023634][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 51.028390][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 51.033594][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.039487][ T3596] do_syscall_64+0x35/0xb0 [ 51.043902][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.049793][ T3596] RIP: 0033:0x7fd80a7f4e1c [ 51.054212][ T3596] 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 [ 51.073817][ T3596] RSP: 002b:00007ffd9a987530 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 51.082217][ T3596] RAX: ffffffffffffffda RBX: 00007fd80b88d320 RCX: 00007fd80a7f4e1c [ 51.090195][ T3596] RDX: 0000000000000048 RSI: 00007fd80b88d370 RDI: 0000000000000003 [ 51.098153][ T3596] RBP: 0000000000000000 R08: 00007ffd9a987584 R09: 000000000000000c [ 51.106130][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 51.114085][ T3596] R13: 00007fd80b88d370 R14: 0000000000000003 R15: 0000000000000000 [ 51.122050][ T3596] [ 51.128883][ T3596] device hsr_slave_0 entered promiscuous mode [ 51.136462][ T3596] device hsr_slave_1 entered promiscuous mode [ 51.216701][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.227208][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.236701][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.246047][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.266471][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.273685][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.281642][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.288817][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.335344][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.351413][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.362408][ T3605] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.371509][ T3605] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.381750][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.393520][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.404067][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 51.413010][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.421815][ T920] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.429013][ T920] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.439953][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.448603][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.457272][ T21] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.464357][ T21] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.480751][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.499619][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.508197][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.517493][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.526215][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.535644][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.544184][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 51.552737][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.564840][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.572957][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 51.581588][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.593781][ T3596] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.610067][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.617510][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.634087][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 51.742485][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 51.752189][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.764715][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.774254][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.785499][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.794200][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.802801][ T3596] device veth0_vlan entered promiscuous mode [ 51.814681][ T3596] device veth1_vlan entered promiscuous mode [ 51.833481][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.841998][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.850221][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.858708][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.870173][ T3596] device veth0_macvtap entered promiscuous mode [ 51.878988][ T3596] device veth1_macvtap entered promiscuous mode [ 51.897798][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.905669][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.914065][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.922224][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.931116][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.944395][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.952119][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.961228][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.973039][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.982044][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.990930][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.999960][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.057455][ T1011] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.067413][ T1011] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.076968][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.098451][ T1011] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.107664][ T1011] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.117125][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/18 20:08:12 building call list... [ 52.350414][ T44] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.484979][ T3585] can: request_module (can-proto-0) failed. [ 54.507342][ T3585] can: request_module (can-proto-0) failed. [ 54.527653][ T3585] can: request_module (can-proto-0) failed. executing program [ 54.821863][ T3596] syz-executor.0 (3596) used greatest stack depth: 22744 bytes left [ 54.949112][ T44] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0