DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3174 [ 29.375135][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.384944][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.2' (ECDSA) to the list of known hosts. 2022/02/17 21:53:46 fuzzer started 2022/02/17 21:53:47 connecting to host at 10.128.0.169:44691 2022/02/17 21:53:47 checking machine... 2022/02/17 21:53:47 checking revisions... 2022/02/17 21:53:47 testing simple program... syzkaller login: [ 51.275878][ T3596] cgroup: Unknown subsys name 'net' [ 51.380887][ T3596] cgroup: Unknown subsys name 'rlimit' [ 52.641009][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.649758][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.658159][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.666303][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.674533][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.681984][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.775245][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 52.819323][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.827025][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.835658][ T3598] device bridge_slave_0 entered promiscuous mode [ 52.845634][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.852923][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.862930][ T3598] device bridge_slave_1 entered promiscuous mode [ 52.884000][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.895601][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.919232][ T3598] team0: Port device team_slave_0 added [ 52.926765][ T3598] team0: Port device team_slave_1 added [ 52.944790][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.951745][ 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. [ 52.977810][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.990468][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.997834][ 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. [ 53.023856][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.048021][ T3598] [ 53.050451][ T3598] ============================= [ 53.055321][ T3598] WARNING: suspicious RCU usage [ 53.060171][ T3598] 5.17.0-rc2-syzkaller-00974-gb75dacaac465 #0 Not tainted [ 53.067373][ T3598] ----------------------------- [ 53.072228][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.080421][ T3598] [ 53.080421][ T3598] other info that might help us debug this: [ 53.080421][ T3598] [ 53.090951][ T3598] [ 53.090951][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 53.099067][ T3598] 2 locks held by syz-executor.0/3598: [ 53.104558][ T3598] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.114065][ T3598] #1: ffff88801df895f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.124276][ T3598] [ 53.124276][ T3598] stack backtrace: [ 53.130457][ T3598] CPU: 0 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00974-gb75dacaac465 #0 [ 53.141223][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.151300][ T3598] Call Trace: [ 53.154582][ T3598] [ 53.157517][ T3598] dump_stack_lvl+0xcd/0x134 [ 53.162103][ T3598] hsr_node_get_first+0x9b/0xb0 [ 53.166949][ T3598] hsr_create_self_node+0x22d/0x650 [ 53.172143][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 53.177004][ T3598] hsr_newlink+0x315/0x730 [ 53.181532][ T3598] ? hsr_dellink+0x130/0x130 [ 53.186143][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 53.191161][ T3598] ? hsr_dellink+0x130/0x130 [ 53.195752][ T3598] __rtnl_newlink+0x107c/0x1760 [ 53.200831][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 53.205512][ T3598] ? is_bpf_text_address+0x77/0x170 [ 53.210999][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.215849][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 53.221066][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.227132][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.233133][ T3598] ? is_bpf_text_address+0x99/0x170 [ 53.238342][ T3598] ? kernel_text_address+0x39/0x80 [ 53.243464][ T3598] ? __kernel_text_address+0x9/0x30 [ 53.248930][ T3598] ? unwind_get_return_address+0x51/0x90 [ 53.254661][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 53.259884][ T3598] ? arch_stack_walk+0x93/0xe0 [ 53.264975][ T3598] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.270459][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.276017][ T3598] rtnl_newlink+0x64/0xa0 [ 53.280434][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 53.285461][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 53.290490][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.295011][ T3598] netlink_rcv_skb+0x153/0x420 [ 53.299780][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.304303][ T3598] ? netlink_ack+0xa60/0xa60 [ 53.308916][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.314218][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.319533][ T3598] netlink_unicast+0x539/0x7e0 [ 53.324327][ T3598] ? netlink_attachskb+0x880/0x880 [ 53.329437][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.335685][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.341939][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 53.347401][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.353125][ T3598] ? __check_object_size+0x16e/0x310 [ 53.358415][ T3598] netlink_sendmsg+0x904/0xe00 [ 53.363189][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.368219][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.374562][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.379510][ T3598] sock_sendmsg+0xcf/0x120 [ 53.383931][ T3598] __sys_sendto+0x21c/0x320 [ 53.388459][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.393844][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.399849][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 53.405318][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.410180][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.415050][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 53.419827][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 53.425029][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.430931][ T3598] do_syscall_64+0x35/0xb0 [ 53.435350][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.441242][ T3598] RIP: 0033:0x7f5da0a01e1c [ 53.445664][ 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 [ 53.465704][ T3598] RSP: 002b:00007ffe67bdff60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.474142][ T3598] RAX: ffffffffffffffda RBX: 00007f5da1a9a320 RCX: 00007f5da0a01e1c [ 53.482200][ T3598] RDX: 0000000000000048 RSI: 00007f5da1a9a370 RDI: 0000000000000003 [ 53.490534][ T3598] RBP: 0000000000000000 R08: 00007ffe67bdffb4 R09: 000000000000000c [ 53.498606][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.506580][ T3598] R13: 00007f5da1a9a370 R14: 0000000000000003 R15: 0000000000000000 [ 53.514569][ T3598] [ 53.524739][ T3598] device hsr_slave_0 entered promiscuous mode [ 53.531978][ T3598] device hsr_slave_1 entered promiscuous mode [ 53.611626][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.622577][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.632054][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.642111][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.663528][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.670775][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.678885][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.685988][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.731717][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.744715][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.756632][ T919] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.765779][ T919] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.773672][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.787885][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.797534][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.806965][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.816291][ T21] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.823474][ T21] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.835512][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.845353][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.853913][ T21] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.861012][ T21] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.883538][ T3598] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 53.894408][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.911960][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.920862][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.929726][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.938723][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.947312][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.956625][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.965142][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.973481][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.982375][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.990747][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.000800][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.008734][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.023916][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.031336][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 54.042563][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.145324][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.154921][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.171617][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.180974][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.192494][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.201031][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.209938][ T3598] device veth0_vlan entered promiscuous mode [ 54.222164][ T3598] device veth1_vlan entered promiscuous mode [ 54.239921][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.248618][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.256908][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.266648][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.278329][ T3598] device veth0_macvtap entered promiscuous mode [ 54.287587][ T3598] device veth1_macvtap entered promiscuous mode [ 54.302044][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.309654][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.318096][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.326715][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.335359][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.348888][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.356389][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.365421][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.377252][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.386642][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.395479][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.404863][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.468062][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.476562][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.489092][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.500804][ T44] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.509150][ T44] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.518815][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 21:53:50 building call list... [ 57.059378][ T3595] can: request_module (can-proto-0) failed. executing program [ 57.129811][ T3595] can: request_module (can-proto-0) failed. [ 57.150976][ T3595] can: request_module (can-proto-0) failed. [ 57.319135][ T3598] syz-executor.0 (3598) used greatest stack depth: 22496 bytes left [ 57.349384][ T44] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0