DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 3172 [ 27.618306][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.629182][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.88' (ECDSA) to the list of known hosts. 2022/02/08 05:51:51 fuzzer started 2022/02/08 05:51:51 connecting to host at 10.128.0.169:41185 2022/02/08 05:51:51 checking machine... 2022/02/08 05:51:51 checking revisions... 2022/02/08 05:51:51 testing simple program... syzkaller login: [ 49.625731][ T3594] cgroup: Unknown subsys name 'net' [ 49.743088][ T3594] cgroup: Unknown subsys name 'rlimit' [ 50.977200][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 50.985378][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 50.993223][ T3597] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.001596][ T3597] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.009473][ T3597] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.017155][ T3597] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.105592][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 51.149613][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.157444][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.158740][ T3596] device bridge_slave_0 entered promiscuous mode [ 51.174519][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.181899][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.190993][ T3596] device bridge_slave_1 entered promiscuous mode [ 51.213203][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.224355][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.247369][ T3596] team0: Port device team_slave_0 added [ 51.254863][ T3596] team0: Port device team_slave_1 added [ 51.273267][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.280452][ 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. [ 51.308062][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.321254][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.329377][ 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. [ 51.356441][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.380891][ T3596] [ 51.383315][ T3596] ============================= [ 51.388175][ T3596] WARNING: suspicious RCU usage [ 51.393016][ T3596] 5.17.0-rc3-next-20220208-syzkaller #0 Not tainted [ 51.399631][ T3596] ----------------------------- [ 51.404460][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.412659][ T3596] [ 51.412659][ T3596] other info that might help us debug this: [ 51.412659][ T3596] [ 51.422910][ T3596] [ 51.422910][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 51.431015][ T3596] 2 locks held by syz-executor.0/3596: [ 51.436506][ T3596] #0: ffffffff8d3357e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.445969][ T3596] #1: ffff88801aac15f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.456154][ T3596] [ 51.456154][ T3596] stack backtrace: [ 51.462095][ T3596] CPU: 0 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220208-syzkaller #0 [ 51.471986][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.482049][ T3596] Call Trace: [ 51.485314][ T3596] [ 51.488234][ T3596] dump_stack_lvl+0xcd/0x134 [ 51.492824][ T3596] hsr_node_get_first+0x9b/0xb0 [ 51.497673][ T3596] hsr_create_self_node+0x22d/0x650 [ 51.502881][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 51.507733][ T3596] hsr_newlink+0x315/0x730 [ 51.512141][ T3596] ? hsr_dellink+0x130/0x130 [ 51.516725][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 51.521846][ T3596] ? hsr_dellink+0x130/0x130 [ 51.526443][ T3596] __rtnl_newlink+0x107c/0x1760 [ 51.531299][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 51.535995][ T3596] ? is_bpf_text_address+0x77/0x170 [ 51.541539][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.546386][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 51.551672][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.557753][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.563474][ T3596] ? is_bpf_text_address+0x99/0x170 [ 51.568681][ T3596] ? kernel_text_address+0x39/0x80 [ 51.573808][ T3596] ? __kernel_text_address+0x9/0x30 [ 51.579101][ T3596] ? unwind_get_return_address+0x51/0x90 [ 51.584733][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 51.589937][ T3596] ? arch_stack_walk+0x93/0xe0 [ 51.594754][ T3596] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 51.600218][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.605858][ T3596] rtnl_newlink+0x64/0xa0 [ 51.610188][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 51.615210][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 51.620153][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 51.624767][ T3596] netlink_rcv_skb+0x153/0x420 [ 51.629572][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 51.634097][ T3596] ? netlink_ack+0xa80/0xa80 [ 51.638688][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 51.644092][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.649394][ T3596] netlink_unicast+0x539/0x7e0 [ 51.654164][ T3596] ? netlink_attachskb+0x880/0x880 [ 51.659456][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.665719][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.671972][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 51.677012][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.682825][ T3596] ? __check_object_size+0x16c/0x4f0 [ 51.688118][ T3596] netlink_sendmsg+0x904/0xe00 [ 51.692911][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 51.697856][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.704105][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 51.709036][ T3596] sock_sendmsg+0xcf/0x120 [ 51.713453][ T3596] __sys_sendto+0x21c/0x320 [ 51.717955][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.723330][ T3596] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 51.729330][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 51.734793][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.739639][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 51.744497][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 51.749263][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 51.754468][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.760365][ T3596] do_syscall_64+0x35/0xb0 [ 51.764783][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.770674][ T3596] RIP: 0033:0x7f8d002dde1c [ 51.775082][ 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 [ 51.794687][ T3596] RSP: 002b:00007ffff96da520 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 51.803096][ T3596] RAX: ffffffffffffffda RBX: 00007f8d01376320 RCX: 00007f8d002dde1c [ 51.811145][ T3596] RDX: 0000000000000048 RSI: 00007f8d01376370 RDI: 0000000000000003 [ 51.819108][ T3596] RBP: 0000000000000000 R08: 00007ffff96da574 R09: 000000000000000c [ 51.827073][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 51.835043][ T3596] R13: 00007f8d01376370 R14: 0000000000000003 R15: 0000000000000000 [ 51.843020][ T3596] [ 51.853160][ T3596] device hsr_slave_0 entered promiscuous mode [ 51.859926][ T3596] device hsr_slave_1 entered promiscuous mode [ 51.939152][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.949363][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.959106][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.968395][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.989160][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.996514][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.004145][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.011282][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.054655][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.067984][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.079467][ T3606] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.088044][ T3606] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.098558][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.113022][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.124485][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.135049][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.143851][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.151143][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.173484][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.184294][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.194005][ T916] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.201120][ T916] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.211175][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.220184][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.244185][ T3596] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.257948][ T3596] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.273085][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.282871][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.291890][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.300949][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.309541][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.318226][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.327946][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.336260][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.345101][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.353186][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.368832][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.376725][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.391747][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 52.518760][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.529049][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.538053][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.547875][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.557559][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.565285][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.574289][ T3596] device veth0_vlan entered promiscuous mode [ 52.586598][ T3596] device veth1_vlan entered promiscuous mode [ 52.604117][ T3596] device veth0_macvtap entered promiscuous mode [ 52.612652][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.621421][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.630425][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.638857][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.648016][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.658869][ T3596] device veth1_macvtap entered promiscuous mode [ 52.674804][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.683085][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.691440][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.700066][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.712062][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.720188][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.729577][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.741251][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.750376][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.759125][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.768496][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.829542][ T989] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.845771][ T989] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.855674][ T55] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.858212][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.865546][ T55] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.881195][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/08 05:51:55 building call list... [ 53.047351][ T22] Bluetooth: hci0: command 0x0409 tx timeout [ 53.159517][ T989] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.209093][ T3589] can: request_module (can-proto-0) failed. [ 55.232247][ T3589] can: request_module (can-proto-0) failed. [ 55.253149][ T3589] can: request_module (can-proto-0) failed. [ 55.329328][ T3596] syz-executor.0 (3596) used greatest stack depth: 22504 bytes left executing program [ 55.417982][ T989] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0