Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts. syzkaller login: [ 33.371209] audit: type=1400 audit(1600730246.989:8): avc: denied { execmem } for pid=6339 comm="syz-executor288" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.393469] IPVS: ftp: loaded support on port[0] = 21 [ 33.461088] chnl_net:caif_netlink_parms(): no params data found [ 33.580330] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.587176] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.594126] device bridge_slave_0 entered promiscuous mode [ 33.602025] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.608536] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.615441] device bridge_slave_1 entered promiscuous mode [ 33.631854] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.640474] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.657923] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.665044] team0: Port device team_slave_0 added [ 33.670814] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.677925] team0: Port device team_slave_1 added [ 33.693344] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.699650] 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. [ 33.726213] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.738471] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.744782] 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. [ 33.770008] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.780562] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.788148] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.806717] device hsr_slave_0 entered promiscuous mode [ 33.812316] device hsr_slave_1 entered promiscuous mode [ 33.818510] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.825455] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 33.886081] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.892505] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.899340] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.905677] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.934446] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.941178] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.949388] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.957866] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.975958] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.983836] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.993934] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.000648] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.008974] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.016999] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.023329] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.036729] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.044306] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.050714] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.060236] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.068285] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.082216] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 34.092438] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 34.103655] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.110280] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.118238] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.125722] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.133790] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.147234] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.154322] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.161328] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.172102] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.220699] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 34.230957] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.259688] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 34.267745] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 34.274146] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 34.283554] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.291368] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.298518] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.308288] device veth0_vlan entered promiscuous mode [ 34.316998] device veth1_vlan entered promiscuous mode [ 34.322701] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.331421] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.341938] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.350919] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.358214] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.365303] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.374674] device veth0_macvtap entered promiscuous mode [ 34.380787] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.390203] device veth1_macvtap entered promiscuous mode [ 34.399881] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.408722] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.418831] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.425408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.434147] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.441877] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.451115] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 34.458206] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.464749] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 34.472887] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 34.551311] HSR: VLAN not yet supported [ 34.551484] ------------[ cut here ]------------ [ 34.560246] WARNING: CPU: 0 PID: 6340 at net/hsr/hsr_forward.c:336 hsr_forward_skb.cold+0x18/0xef [ 34.569228] Kernel panic - not syncing: panic_on_warn set ... [ 34.569228] [ 34.576563] CPU: 0 PID: 6340 Comm: syz-executor288 Not tainted 4.14.198-syzkaller #0 [ 34.584414] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.593763] Call Trace: [ 34.596330] dump_stack+0x1b2/0x283 [ 34.599937] panic+0x1f9/0x42d [ 34.603121] ? add_taint.cold+0x16/0x16 [ 34.607074] ? hsr_forward_skb.cold+0x18/0xef [ 34.611545] ? hsr_forward_skb.cold+0x18/0xef [ 34.616014] __warn.cold+0x20/0x4b [ 34.619529] ? ist_end_non_atomic+0x10/0x10 [ 34.623845] ? hsr_forward_skb.cold+0x18/0xef [ 34.628330] report_bug+0x208/0x249 [ 34.631932] do_error_trap+0x195/0x2d0 [ 34.635793] ? math_error+0x2d0/0x2d0 [ 34.639573] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.644408] invalid_op+0x1b/0x40 [ 34.647857] RIP: 0010:hsr_forward_skb.cold+0x18/0xef [ 34.652932] RSP: 0018:ffff888098687720 EFLAGS: 00010286 [ 34.658269] RAX: 000000000000001b RBX: ffff8880a0357cc2 RCX: 0000000000000000 [ 34.665512] RDX: 0000000000000000 RSI: ffff888097f3e988 RDI: ffffed10130d0eda [ 34.672758] RBP: ffff88809e659d00 R08: 000000000000001b R09: 0000000000000000 [ 34.680001] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809e659dc6 [ 34.687261] R13: ffff88809e695600 R14: ffff8880a0357cce R15: ffff88809e659dd0 [ 34.694521] ? dev_queue_xmit_nit+0x6ef/0x950 [ 34.699011] hsr_dev_xmit+0x6b/0xa0 [ 34.702618] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.707617] dev_hard_start_xmit+0x188/0x890 [ 34.712021] __dev_queue_xmit+0x1d7f/0x2480 [ 34.716339] ? netdev_pick_tx+0x2e0/0x2e0 [ 34.720463] ? sock_kzfree_s+0x50/0x50 [ 34.724327] ? lock_acquire+0x170/0x3f0 [ 34.728291] ? skb_copy_datagram_from_iter+0x3c1/0x5f0 [ 34.733560] ? memcpy+0x35/0x50 [ 34.736822] packet_snd+0x1393/0x21e0 [ 34.740612] ? prb_retire_rx_blk_timer_expired+0x630/0x630 [ 34.746226] ? mem_cgroup_uncharge+0xd0/0xd0 [ 34.750655] ? __lock_acquire+0x5fc/0x3f20 [ 34.754870] ? lock_downgrade+0x740/0x740 [ 34.759041] packet_sendmsg+0x1139/0x2aca [ 34.763202] ? lock_downgrade+0x740/0x740 [ 34.767377] ? selinux_socket_sendmsg+0x1d8/0x260 [ 34.772236] ? selinux_socket_getpeername+0x260/0x260 [ 34.777416] ? __might_fault+0x104/0x1b0 [ 34.781454] ? compat_packet_setsockopt+0x140/0x140 [ 34.786443] ? lock_acquire+0x170/0x3f0 [ 34.790396] ? security_socket_sendmsg+0x83/0xb0 [ 34.795127] ? compat_packet_setsockopt+0x140/0x140 [ 34.800148] sock_sendmsg+0xb5/0x100 [ 34.803852] SyS_sendto+0x1c7/0x2c0 [ 34.807470] ? SyS_getpeername+0x220/0x220 [ 34.811682] ? do_vfs_ioctl+0xe2/0xff0 [ 34.815566] ? security_file_ioctl+0x83/0xb0 [ 34.819951] ? do_syscall_64+0x4c/0x640 [ 34.823915] ? SyS_getpeername+0x220/0x220 [ 34.828133] do_syscall_64+0x1d5/0x640 [ 34.832011] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.837175] RIP: 0033:0x443519 [ 34.840355] RSP: 002b:00007ffff1554208 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 34.848052] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443519 [ 34.855295] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 34.862539] RBP: 00007ffff1554220 R08: 0000000020000000 R09: 0000000000000014 [ 34.869783] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffff1554230 [ 34.877028] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.885495] Kernel Offset: disabled [ 34.889159] Rebooting in 86400 seconds..