[ 32.173243] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.185811] device bridge_slave_0 left promiscuous mode [ 32.192218] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.208443] device veth1_macvtap left promiscuous mode [ 32.215446] device veth0_macvtap left promiscuous mode [ 32.220794] device veth1_vlan left promiscuous mode [ 32.227375] device veth0_vlan left promiscuous mode [ 32.354904] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 32.367373] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 32.409768] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. 2021/01/06 04:59:22 parsed 1 programs 2021/01/06 04:59:22 executed programs: 0 [ 39.481752] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 39.490739] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 39.508716] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 39.521393] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 39.524209] IPVS: Creating netns size=2712 id=2 [ 39.524278] IPVS: ftp: loaded support on port[0] = 21 [ 39.559359] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 39.566969] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 39.618847] IPVS: Creating netns size=2712 id=3 [ 39.624550] IPVS: ftp: loaded support on port[0] = 21 [ 39.729054] chnl_net:caif_netlink_parms(): no params data found [ 39.746589] IPVS: Creating netns size=2712 id=4 [ 39.751352] IPVS: ftp: loaded support on port[0] = 21 [ 39.885457] chnl_net:caif_netlink_parms(): no params data found [ 39.912713] IPVS: Creating netns size=2712 id=5 [ 39.917971] IPVS: ftp: loaded support on port[0] = 21 [ 40.050912] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.058024] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.065845] device bridge_slave_0 entered promiscuous mode [ 40.086203] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.092730] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.101330] device bridge_slave_1 entered promiscuous mode [ 40.151372] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.161105] IPVS: Creating netns size=2712 id=6 [ 40.169806] IPVS: ftp: loaded support on port[0] = 21 [ 40.180925] chnl_net:caif_netlink_parms(): no params data found [ 40.200148] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.383697] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.390898] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.400466] device bridge_slave_0 entered promiscuous mode [ 40.431284] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.438392] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.448296] device bridge_slave_1 entered promiscuous mode [ 40.467177] chnl_net:caif_netlink_parms(): no params data found [ 40.510429] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 40.518198] IPVS: Creating netns size=2712 id=7 [ 40.518269] IPVS: ftp: loaded support on port[0] = 21 [ 40.540758] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.558285] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 40.587160] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.603140] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.670114] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.692778] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.700015] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.708803] device bridge_slave_0 entered promiscuous mode [ 40.755129] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.762150] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.771777] device bridge_slave_1 entered promiscuous mode [ 40.890060] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.902711] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.911413] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.931055] chnl_net:caif_netlink_parms(): no params data found [ 40.945181] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.033614] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.059892] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.067210] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.075132] device bridge_slave_0 entered promiscuous mode [ 41.083052] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.110592] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.117656] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.126980] device bridge_slave_1 entered promiscuous mode [ 41.250070] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.260019] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.280864] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.289818] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.311847] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.387400] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.510684] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.517675] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.526332] device bridge_slave_0 entered promiscuous mode [ 41.566315] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.573022] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.581925] device bridge_slave_1 entered promiscuous mode [ 41.619188] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.626444] chnl_net:caif_netlink_parms(): no params data found [ 41.657787] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.671422] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.691932] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.721519] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.757711] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.785081] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 41.887892] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.922363] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 42.042177] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 42.109632] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 42.136986] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.143472] bridge0: port 1(bridge_slave_0) entered disabled state [ 42.152588] device bridge_slave_0 entered promiscuous mode [ 42.165697] ------------[ cut here ]------------ [ 42.170608] WARNING: CPU: 0 PID: 7914 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 42.179131] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 42.187062] Kernel panic - not syncing: panic_on_warn set ... [ 42.187062] [ 42.194410] CPU: 0 PID: 7914 Comm: syz-executor.4 Not tainted 4.6.0-syzkaller #0 [ 42.201922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.211255] 0000000000000000 ffff8800b2556fc8 ffffffff82dab352 ffffffff8667aec0 [ 42.219260] ffff8800b25570a0 ffffffff8672c880 ffffffff818db72b 0000000000000009 [ 42.227283] ffff8800b2557090 ffffffff815c7a54 0000000041b58ab3 ffffffff8777b6e3 [ 42.235518] Call Trace: [ 42.238095] [] dump_stack+0x136/0x1d4 [ 42.243519] [] ? sysfs_warn_dup+0x7b/0xa0 [ 42.249312] [] panic+0x1af/0x348 [ 42.254323] [] ? to_vmem_altmap+0x125/0x125 [ 42.260266] [] ? sysfs_warn_dup+0x7b/0xa0 [ 42.266053] [] __warn+0x18d/0x1b0 [ 42.271126] [] warn_slowpath_fmt+0x92/0xb0 [ 42.276991] [] ? __warn+0x1b0/0x1b0 [ 42.282240] [] ? kernfs_path_from_node+0x4a/0x60 [ 42.288625] [] sysfs_warn_dup+0x7b/0xa0 [ 42.294216] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 42.301310] [] sysfs_create_link+0x43/0xb0 [ 42.307165] [] device_add+0x6a1/0x1400 [ 42.312855] [] ? device_private_init+0x180/0x180 [ 42.319324] [] ? kfree_const+0x1d/0x20 [ 42.324833] [] ? kobject_set_name_vargs+0xb4/0x130 [ 42.331384] [] device_create_groups_vargs+0x1c8/0x220 [ 42.338205] [] device_create+0x88/0xa0 [ 42.343721] [] ? device_create_vargs+0x20/0x20 [ 42.349928] [] ? macvlan_set_mac_address+0x150/0x150 [ 42.356759] [] macvtap_device_event+0x1c4/0x2a0 [ 42.363061] [] notifier_call_chain+0x8b/0x170 [ 42.369251] [] raw_notifier_call_chain+0x11/0x20 [ 42.375656] [] call_netdevice_notifiers_info+0x47/0x80 [ 42.382659] [] register_netdevice+0x8e8/0xd00 [ 42.388798] [] ? netdev_change_features+0x80/0x80 [ 42.395280] [] ? dev_get_nest_level+0x10c/0x1a0 [ 42.401713] [] macvlan_common_newlink+0x8b9/0x1090 [ 42.408382] [] macvtap_newlink+0xbf/0x110 [ 42.414201] [] ? __netlink_ns_capable+0xc7/0xf0 [ 42.420535] [] rtnl_newlink+0xd4b/0x1230 [ 42.426231] [] ? rtnl_link_ops_get+0x5d/0x90 [ 42.432360] [] ? rtnl_newlink+0x319/0x1230 [ 42.438237] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 42.444980] [] ? rtnl_setlink+0x2f0/0x2f0 [ 42.450760] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 42.457569] [] ? __lock_acquire+0x15c3/0x5990 [ 42.463685] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 42.470669] [] ? __netlink_ns_capable+0xc7/0xf0 [ 42.476978] [] rtnetlink_rcv_msg+0x222/0x680 [ 42.483016] [] ? trace_hardirqs_on_caller+0x49e/0x5c0 [ 42.489843] [] ? rtnetlink_rcv+0x30/0x30 [ 42.495529] [] ? mutex_lock_nested+0x5fd/0xb30 [ 42.501733] [] ? rtnetlink_rcv+0x16/0x30 [ 42.507534] [] ? netlink_seq_start+0xe0/0xe0 [ 42.513564] [] netlink_rcv_skb+0x242/0x350 [ 42.519433] [] ? rtnetlink_rcv+0x30/0x30 [ 42.525127] [] rtnetlink_rcv+0x25/0x30 [ 42.530655] [] netlink_unicast+0x3da/0x560 [ 42.536632] [] ? netlink_sendskb+0x40/0x40 [ 42.542612] [] netlink_sendmsg+0x9bb/0xb40 [ 42.548481] [] ? nlmsg_notify+0xf0/0xf0 [ 42.554091] [] ? __might_fault+0xf1/0x1b0 [ 42.559951] [] ? nlmsg_notify+0xf0/0xf0 [ 42.565554] [] sock_sendmsg+0xb5/0xf0 [ 42.571000] [] SyS_sendto+0x1ca/0x290 [ 42.576566] [] ? SyS_getpeername+0x240/0x240 [ 42.582600] [] ? mntput_no_expire+0xce/0x600 [ 42.588630] [] ? mnt_get_count+0x1c0/0x1c0 [ 42.594485] [] ? mntput+0x52/0x70 [ 42.599600] [] ? task_work_run+0x14a/0x200 [ 42.605477] [] ? trace_hardirqs_on_caller+0x49e/0x5c0 [ 42.612306] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 42.618867] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 42.626792] Kernel Offset: disabled