forked to background, child pid 3178 no interfaces have a carrier [ 28.529769][ T3179] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.540044][ T3179] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.56' (ECDSA) to the list of known hosts. 2022/02/25 18:19:32 fuzzer started 2022/02/25 18:19:33 connecting to host at 10.128.0.169:32835 2022/02/25 18:19:33 checking machine... 2022/02/25 18:19:33 checking revisions... 2022/02/25 18:19:33 testing simple program... syzkaller login: [ 43.768506][ T3596] cgroup: Unknown subsys name 'net' [ 43.869973][ T3596] cgroup: Unknown subsys name 'rlimit' [ 45.056632][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 45.064770][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 45.072502][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 45.081138][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 45.089421][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 45.096970][ T3602] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 45.186713][ T3599] chnl_net:caif_netlink_parms(): no params data found [ 45.228801][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.236582][ T3599] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.244973][ T3599] device bridge_slave_0 entered promiscuous mode [ 45.254194][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.261480][ T3599] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.269580][ T3599] device bridge_slave_1 entered promiscuous mode [ 45.290373][ T3599] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.301342][ T3599] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.324313][ T3599] team0: Port device team_slave_0 added [ 45.332283][ T3599] team0: Port device team_slave_1 added [ 45.350465][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.357693][ T3599] 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. [ 45.383918][ T3599] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.396553][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.403565][ T3599] 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. [ 45.429642][ T3599] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.454484][ T3599] [ 45.457078][ T3599] ============================= [ 45.461909][ T3599] WARNING: suspicious RCU usage [ 45.466886][ T3599] 5.17.0-rc4-syzkaller-01359-g08d4dba6ae77 #0 Not tainted [ 45.474051][ T3599] ----------------------------- [ 45.479065][ T3599] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 45.487255][ T3599] [ 45.487255][ T3599] other info that might help us debug this: [ 45.487255][ T3599] [ 45.497513][ T3599] [ 45.497513][ T3599] rcu_scheduler_active = 2, debug_locks = 1 [ 45.505615][ T3599] 2 locks held by syz-executor.0/3599: [ 45.511182][ T3599] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 45.520846][ T3599] #1: ffff88801d3ed5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 45.531067][ T3599] [ 45.531067][ T3599] stack backtrace: [ 45.537029][ T3599] CPU: 1 PID: 3599 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01359-g08d4dba6ae77 #0 [ 45.547707][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.557788][ T3599] Call Trace: [ 45.561059][ T3599] [ 45.563984][ T3599] dump_stack_lvl+0xcd/0x134 [ 45.568706][ T3599] hsr_node_get_first+0x9b/0xb0 [ 45.573556][ T3599] hsr_create_self_node+0x22d/0x650 [ 45.578752][ T3599] hsr_dev_finalize+0x2c1/0x7d0 [ 45.583660][ T3599] hsr_newlink+0x315/0x730 [ 45.588140][ T3599] ? hsr_dellink+0x130/0x130 [ 45.592750][ T3599] ? rtnl_create_link+0x7e8/0xc00 [ 45.597771][ T3599] ? hsr_dellink+0x130/0x130 [ 45.602351][ T3599] __rtnl_newlink+0x107c/0x1760 [ 45.607309][ T3599] ? rtnl_setlink+0x3c0/0x3c0 [ 45.611976][ T3599] ? is_bpf_text_address+0x77/0x170 [ 45.617164][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 45.622006][ T3599] ? unwind_next_frame+0xee1/0x1ce0 [ 45.627216][ T3599] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 45.633278][ T3599] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 45.639000][ T3599] ? is_bpf_text_address+0x99/0x170 [ 45.644193][ T3599] ? kernel_text_address+0x39/0x80 [ 45.649291][ T3599] ? __kernel_text_address+0x9/0x30 [ 45.654476][ T3599] ? unwind_get_return_address+0x51/0x90 [ 45.660107][ T3599] ? create_prof_cpu_mask+0x20/0x20 [ 45.665434][ T3599] ? arch_stack_walk+0x93/0xe0 [ 45.670248][ T3599] ? rcu_read_lock_sched_held+0x3a/0x70 [ 45.675821][ T3599] rtnl_newlink+0x64/0xa0 [ 45.680153][ T3599] ? __rtnl_newlink+0x1760/0x1760 [ 45.685272][ T3599] rtnetlink_rcv_msg+0x413/0xb80 [ 45.690212][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 45.694995][ T3599] netlink_rcv_skb+0x153/0x420 [ 45.699752][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 45.704508][ T3599] ? netlink_ack+0xa60/0xa60 [ 45.709118][ T3599] ? netlink_deliver_tap+0x1a2/0xc40 [ 45.714479][ T3599] ? netlink_deliver_tap+0x1b1/0xc40 [ 45.719770][ T3599] netlink_unicast+0x539/0x7e0 [ 45.724526][ T3599] ? netlink_attachskb+0x880/0x880 [ 45.729619][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 45.735849][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 45.742327][ T3599] ? __phys_addr_symbol+0x2c/0x70 [ 45.747340][ T3599] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 45.753058][ T3599] ? __check_object_size+0x16e/0x310 [ 45.758350][ T3599] netlink_sendmsg+0x904/0xe00 [ 45.763113][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 45.768419][ T3599] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 45.774735][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 45.779706][ T3599] sock_sendmsg+0xcf/0x120 [ 45.784124][ T3599] __sys_sendto+0x21c/0x320 [ 45.788649][ T3599] ? __ia32_sys_getpeername+0xb0/0xb0 [ 45.794146][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 45.799366][ T3599] ? __context_tracking_exit+0xb8/0xe0 [ 45.804915][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 45.809786][ T3599] __x64_sys_sendto+0xdd/0x1b0 [ 45.814548][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 45.819793][ T3599] ? syscall_enter_from_user_mode+0x21/0x70 [ 45.825689][ T3599] do_syscall_64+0x35/0xb0 [ 45.830249][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 45.836355][ T3599] RIP: 0033:0x7f3b775d2e0c [ 45.840902][ T3599] 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 [ 45.860617][ T3599] RSP: 002b:00007fffffbe6880 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 45.869318][ T3599] RAX: ffffffffffffffda RBX: 00007f3b7866b320 RCX: 00007f3b775d2e0c [ 45.877278][ T3599] RDX: 0000000000000048 RSI: 00007f3b7866b370 RDI: 0000000000000003 [ 45.885440][ T3599] RBP: 0000000000000000 R08: 00007fffffbe68d4 R09: 000000000000000c [ 45.893567][ T3599] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 45.902093][ T3599] R13: 00007f3b7866b370 R14: 0000000000000003 R15: 0000000000000000 [ 45.910073][ T3599] [ 45.919238][ T3599] device hsr_slave_0 entered promiscuous mode [ 45.926404][ T3599] device hsr_slave_1 entered promiscuous mode [ 46.008303][ T3599] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 46.019706][ T3599] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 46.028767][ T3599] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 46.038552][ T3599] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 46.059587][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.066928][ T3599] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.074951][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.082223][ T3599] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.127261][ T3599] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.141031][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.151353][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.160514][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.169540][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.184281][ T3599] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.195276][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 46.204032][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 46.212401][ T140] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.219720][ T140] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.232894][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 46.242042][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 46.254916][ T920] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.262434][ T920] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.270485][ T920] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 46.284281][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 46.303729][ T3599] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 46.316148][ T3599] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 46.328248][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 46.337977][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 46.346690][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 46.355677][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 46.364386][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 46.372893][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 46.381637][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 46.390415][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 46.399669][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 46.407826][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 46.423776][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 46.431401][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 46.443973][ T3599] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 46.561197][ T3599] device veth0_vlan entered promiscuous mode [ 46.568950][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 46.577804][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 46.586418][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 46.595434][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 46.604916][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 46.612618][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 46.626227][ T3599] device veth1_vlan entered promiscuous mode [ 46.643575][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 46.651862][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 46.661117][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 46.670596][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 46.682681][ T3599] device veth0_macvtap entered promiscuous mode [ 46.692021][ T3599] device veth1_macvtap entered promiscuous mode [ 46.707075][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 46.715123][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 46.723713][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 46.731805][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 46.740427][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 46.752159][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 46.761125][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 46.769972][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 46.780546][ T3599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.790143][ T3599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.799236][ T3599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.808090][ T3599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.867877][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 46.876975][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 46.898474][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 46.911428][ T1279] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 46.919421][ T1279] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 46.928040][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/25 18:19:36 building call list... [ 47.190267][ T1279] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.291630][ T3593] can: request_module (can-proto-0) failed. [ 49.314694][ T3593] can: request_module (can-proto-0) failed. [ 49.335649][ T3593] can: request_module (can-proto-0) failed. executing program [ 49.754140][ T1279] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0