[ 30.961455] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.970950] device bridge_slave_0 left promiscuous mode [ 30.977979] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.987854] device veth1_macvtap left promiscuous mode [ 30.994651] device veth0_macvtap left promiscuous mode [ 31.000148] device veth1_vlan left promiscuous mode [ 31.007331] device veth0_vlan left promiscuous mode [ 31.117803] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 31.134527] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 31.167079] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.10.7' (ECDSA) to the list of known hosts. 2021/01/14 15:15:21 parsed 1 programs 2021/01/14 15:15:21 executed programs: 0 [ 37.809590] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 37.832951] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 37.841482] IPVS: Creating netns size=2712 id=2 [ 37.843951] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 37.846414] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 37.848079] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 37.850658] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 37.878272] IPVS: ftp: loaded support on port[0] = 21 [ 37.931188] IPVS: Creating netns size=2712 id=3 [ 37.941839] IPVS: ftp: loaded support on port[0] = 21 [ 38.014985] chnl_net:caif_netlink_parms(): no params data found [ 38.049081] IPVS: Creating netns size=2712 id=4 [ 38.059745] IPVS: ftp: loaded support on port[0] = 21 [ 38.181361] IPVS: Creating netns size=2712 id=5 [ 38.196245] IPVS: ftp: loaded support on port[0] = 21 [ 38.216602] chnl_net:caif_netlink_parms(): no params data found [ 38.270697] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.278991] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.287195] device bridge_slave_0 entered promiscuous mode [ 38.304096] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.310466] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.319009] device bridge_slave_1 entered promiscuous mode [ 38.414101] IPVS: Creating netns size=2712 id=6 [ 38.418986] IPVS: ftp: loaded support on port[0] = 21 [ 38.428093] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.447858] chnl_net:caif_netlink_parms(): no params data found [ 38.459965] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.612426] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 38.629327] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.636549] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.645232] device bridge_slave_0 entered promiscuous mode [ 38.663666] batman_adv: Unable to register the batman interface 'batadv0': -12 [ 38.679343] chnl_net:caif_netlink_parms(): no params data found [ 38.691686] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.698202] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.706944] device bridge_slave_1 entered promiscuous mode [ 38.729489] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 38.738049] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 38.788276] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.799660] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.809416] IPVS: Creating netns size=2712 id=7 [ 38.809479] IPVS: ftp: loaded support on port[0] = 21 [ 38.891442] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 38.980166] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.006057] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.013472] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.022825] device bridge_slave_0 entered promiscuous mode [ 39.067607] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.074827] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.084457] device bridge_slave_1 entered promiscuous mode [ 39.140300] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.180211] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.189231] chnl_net:caif_netlink_parms(): no params data found [ 39.201594] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.236903] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.244879] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.251685] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.259396] device bridge_slave_0 entered promiscuous mode [ 39.311296] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.317647] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.325990] device bridge_slave_1 entered promiscuous mode [ 39.389976] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.397757] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.425298] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.480152] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.606295] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.636916] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.666552] chnl_net:caif_netlink_parms(): no params data found [ 39.696781] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.703772] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.712108] device bridge_slave_0 entered promiscuous mode [ 39.753452] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.761399] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.769306] device bridge_slave_1 entered promiscuous mode [ 39.778954] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 39.827486] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.835686] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.847101] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.867157] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.874862] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.895172] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.081523] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.088382] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.097625] device bridge_slave_0 entered promiscuous mode [ 40.104584] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.126586] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.133114] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.141596] device bridge_slave_1 entered promiscuous mode [ 40.166395] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 40.174179] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.241976] ------------[ cut here ]------------ [ 40.247029] WARNING: CPU: 1 PID: 7906 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7b/0xa0 [ 40.256212] sysfs: cannot create duplicate filename '/class/macvtap/tap50' [ 40.263636] Kernel panic - not syncing: panic_on_warn set ... [ 40.263636] [ 40.272044] CPU: 1 PID: 7906 Comm: syz-executor.3 Not tainted 4.6.0-syzkaller #0 [ 40.279657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.289491] 0000000000000000 ffff8800b924efc8 ffffffff82da4dd2 ffffffff8667aec0 [ 40.297898] ffff8800b924f0a0 ffffffff8672c8c0 ffffffff818db72b 0000000000000009 [ 40.306533] ffff8800b924f090 ffffffff815c7a54 0000000041b58ab3 ffffffff87779893 [ 40.315465] Call Trace: [ 40.318122] [] dump_stack+0x136/0x1d4 [ 40.323906] [] ? sysfs_warn_dup+0x7b/0xa0 [ 40.330803] [] panic+0x1af/0x348 [ 40.335835] [] ? to_vmem_altmap+0x125/0x125 [ 40.341904] [] ? sysfs_warn_dup+0x7b/0xa0 [ 40.347868] [] __warn+0x18d/0x1b0 [ 40.353037] [] warn_slowpath_fmt+0x92/0xb0 [ 40.358896] [] ? __warn+0x1b0/0x1b0 [ 40.364277] [] ? kernfs_path_from_node+0x4a/0x60 [ 40.371214] [] sysfs_warn_dup+0x7b/0xa0 [ 40.376920] [] sysfs_do_create_link_sd.isra.0+0xd1/0xf0 [ 40.384545] [] sysfs_create_link+0x43/0xb0 [ 40.391618] [] device_add+0x6a1/0x1400 [ 40.397148] [] ? device_private_init+0x180/0x180 [ 40.403634] [] ? kfree_const+0x1d/0x20 [ 40.409352] [] ? kobject_set_name_vargs+0xb4/0x130 [ 40.416005] [] device_create_groups_vargs+0x1c8/0x220 [ 40.423088] [] device_create+0x88/0xa0 [ 40.429031] [] ? device_create_vargs+0x20/0x20 [ 40.435879] [] ? macvlan_set_mac_address+0x150/0x150 [ 40.443304] [] macvtap_device_event+0x1c4/0x2a0 [ 40.449793] [] notifier_call_chain+0x8b/0x170 [ 40.455936] [] raw_notifier_call_chain+0x11/0x20 [ 40.462326] [] call_netdevice_notifiers_info+0x47/0x80 [ 40.469642] [] register_netdevice+0x8e8/0xd00 [ 40.475777] [] ? netdev_change_features+0x80/0x80 [ 40.482348] [] ? dev_get_nest_level+0x10c/0x1a0 [ 40.488912] [] macvlan_common_newlink+0x8b9/0x1090 [ 40.495726] [] macvtap_newlink+0xbf/0x110 [ 40.501513] [] ? __netlink_ns_capable+0xc7/0xf0 [ 40.507820] [] rtnl_newlink+0xd4b/0x1230 [ 40.513654] [] ? rtnl_link_ops_get+0x5d/0x90 [ 40.519795] [] ? rtnl_newlink+0x319/0x1230 [ 40.525674] [] ? load_balance+0xc07/0x1ee0 [ 40.531807] [] ? rtnl_setlink+0x2f0/0x2f0 [ 40.537588] [] ? kvm_sched_clock_read+0x9/0x20 [ 40.544404] [] ? sched_clock+0x31/0x40 [ 40.550120] [] ? sched_clock_cpu+0x152/0x1e0 [ 40.556173] [] ? cpuacct_css_alloc+0x160/0x160 [ 40.562403] [] ? update_blocked_averages+0x977/0x1540 [ 40.569552] [] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.576640] [] ? __netlink_ns_capable+0xc7/0xf0 [ 40.583234] [] rtnetlink_rcv_msg+0x222/0x680 [ 40.590458] [] ? rtnetlink_rcv+0x30/0x30 [ 40.596432] [] ? mutex_lock_nested+0x5fd/0xb30 [ 40.602807] [] ? rtnetlink_rcv+0x16/0x30 [ 40.608685] [] ? netlink_seq_start+0xe0/0xe0 [ 40.614747] [] netlink_rcv_skb+0x242/0x350 [ 40.620750] [] ? rtnetlink_rcv+0x30/0x30 [ 40.626911] [] rtnetlink_rcv+0x25/0x30 [ 40.632901] [] netlink_unicast+0x3da/0x560 [ 40.638975] [] ? netlink_sendskb+0x40/0x40 [ 40.645232] [] netlink_sendmsg+0x9bb/0xb40 [ 40.651619] [] ? nlmsg_notify+0xf0/0xf0 [ 40.657255] [] ? __might_fault+0xf1/0x1b0 [ 40.663054] [] ? security_socket_sendmsg+0x6a/0xa0 [ 40.669902] [] ? nlmsg_notify+0xf0/0xf0 [ 40.675624] [] sock_sendmsg+0xb5/0xf0 [ 40.681225] [] SyS_sendto+0x1ca/0x290 [ 40.686834] [] ? SyS_getpeername+0x240/0x240 [ 40.693032] [] ? mntput_no_expire+0xce/0x600 [ 40.699325] [] ? mnt_get_count+0x1c0/0x1c0 [ 40.706065] [] ? mntput+0x52/0x70 [ 40.711262] [] ? task_work_run+0x14a/0x200 [ 40.717382] [] ? trace_hardirqs_off+0xd/0x10 [ 40.723493] [] ? exit_to_usermode_loop+0x112/0x1c0 [ 40.730383] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 40.737044] [] entry_SYSCALL_64_fastpath+0x23/0xc1 [ 40.744902] Kernel Offset: disabled