[ 77.860388][ T28] audit: type=1800 audit(1579678751.589:25): pid=9513 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 77.880394][ T28] audit: type=1800 audit(1579678751.599:26): pid=9513 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 77.933132][ T28] audit: type=1800 audit(1579678751.599:27): pid=9513 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 78.677166][ T9580] sshd (9580) used greatest stack depth: 22936 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.68' (ECDSA) to the list of known hosts. syzkaller login: [ 88.890089][ T9666] IPVS: ftp: loaded support on port[0] = 21 [ 88.938941][ T9666] chnl_net:caif_netlink_parms(): no params data found [ 88.967035][ T9666] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.974617][ T9666] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.982377][ T9666] device bridge_slave_0 entered promiscuous mode [ 88.991764][ T9666] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.999023][ T9666] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.006950][ T9666] device bridge_slave_1 entered promiscuous mode [ 89.024021][ T9666] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 89.035404][ T9666] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 89.054884][ T9666] team0: Port device team_slave_0 added [ 89.062728][ T9666] team0: Port device team_slave_1 added [ 89.078075][ T9666] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 89.085284][ T9666] 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. [ 89.111570][ T9666] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 89.124512][ T9666] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 89.131463][ T9666] 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. [ 89.158198][ T9666] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 89.235706][ T9666] device hsr_slave_0 entered promiscuous mode [ 89.294269][ T9666] device hsr_slave_1 entered promiscuous mode [ 89.427727][ T9666] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 89.466264][ T9666] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 89.525526][ T9666] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 89.565702][ T9666] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 89.616307][ T9666] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.623613][ T9666] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.631383][ T9666] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.638630][ T9666] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.682093][ T9666] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.697485][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.709479][ T2784] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.717732][ T2784] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.725994][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 89.740104][ T9666] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.752437][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.762027][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.769170][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.793682][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.802474][ T2784] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.809616][ T2784] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.817713][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.826658][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.836164][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.847358][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.861122][ T9666] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 89.874364][ T9666] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.883938][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.904878][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 89.912428][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.922637][ T9666] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.943148][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 89.951985][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.973071][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 89.981661][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.992336][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 90.000992][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 90.009266][ T9666] device veth0_vlan entered promiscuous mode [ 90.022050][ T9666] device veth1_vlan entered promiscuous mode [ 90.044757][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 90.054524][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 90.062674][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 90.071482][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 90.083242][ T9666] device veth0_macvtap entered promiscuous mode [ 90.092699][ T9666] device veth1_macvtap entered promiscuous mode [ 90.111269][ T9666] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 90.119083][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 90.128534][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 90.137007][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 90.146658][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready executing program [ 90.158887][ T9666] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 90.166696][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 90.175963][ T2780] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 90.205063][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.214679][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.224158][ C1] ------------[ cut here ]------------ [ 90.229817][ C1] Illegal XDP return value 4294967274, expect packet loss! [ 90.237840][ C1] WARNING: CPU: 1 PID: 16 at net/core/filter.c:6877 bpf_warn_invalid_xdp_action+0x77/0x90 [ 90.247816][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 90.253381][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.254399][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.5.0-rc6-syzkaller #0 [ 90.266377][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.270944][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.270956][ C1] Call Trace: [ 90.279530][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.289186][ C1] dump_stack+0x197/0x210 [ 90.289204][ C1] ? __bpf_prog_release+0xf0/0x100 [ 90.289218][ C1] panic+0x2e3/0x75c [ 90.289230][ C1] ? add_taint.cold+0x16/0x16 [ 90.289249][ C1] ? __kasan_check_write+0x14/0x20 [ 90.289261][ C1] ? __warn.cold+0x14/0x3e [ 90.289273][ C1] ? __warn+0xd9/0x1cf [ 90.289294][ C1] ? bpf_warn_invalid_xdp_action+0x77/0x90 [ 90.289306][ C1] __warn.cold+0x2f/0x3e [ 90.289320][ C1] ? bpf_warn_invalid_xdp_action+0x77/0x90 [ 90.289332][ C1] report_bug+0x289/0x300 [ 90.289351][ C1] do_error_trap+0x11b/0x200 [ 90.289366][ C1] do_invalid_op+0x37/0x50 [ 90.289377][ C1] ? bpf_warn_invalid_xdp_action+0x77/0x90 [ 90.289393][ C1] invalid_op+0x23/0x30 [ 90.289405][ C1] RIP: 0010:bpf_warn_invalid_xdp_action+0x77/0x90 [ 90.289417][ C1] Code: 60 3a d7 88 41 83 fc 04 48 c7 c6 a0 3a d7 88 4c 0f 46 ee e8 eb 43 47 fb 44 89 e2 48 c7 c7 e0 3a d7 88 4c 89 ee e8 d8 f3 17 fb <0f> 0b e8 d2 43 47 fb 5b 41 5c 41 5d 5d c3 90 66 2e 0f 1f 84 00 00 [ 90.289428][ C1] RSP: 0018:ffffc90000d7f858 EFLAGS: 00010282 [ 90.289437][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 90.289445][ C1] RDX: 0000000000000100 RSI: ffffffff815e5dd6 RDI: fffff520001afefd [ 90.289452][ C1] RBP: ffffc90000d7f870 R08: ffff8880a9a44440 R09: 0000000000000000 [ 90.289458][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffea [ 90.289466][ C1] R13: ffffffff88d73a60 R14: ffff8880a2ec4110 R15: ffff88809af426c0 [ 90.289488][ C1] ? vprintk_func+0x86/0x189 [ 90.289504][ C1] ? bpf_warn_invalid_xdp_action+0x77/0x90 [ 90.289521][ C1] do_xdp_generic.part.0+0xec9/0x17a0 [ 90.289535][ C1] ? trace_hardirqs_on+0x67/0x240 [ 90.289559][ C1] ? generic_xdp_tx+0x740/0x740 [ 90.289574][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 90.289593][ C1] ? rcu_read_lock_held_common+0x130/0x130 [ 90.289614][ C1] __netif_receive_skb_core+0x68b/0x30b0 [ 90.289626][ C1] ? rcu_read_lock_held_common+0x130/0x130 [ 90.289644][ C1] ? __check_heap_object+0x80/0xb3 [ 90.289659][ C1] ? do_xdp_generic+0x50/0x50 [ 90.289675][ C1] ? __kasan_check_read+0x11/0x20 [ 90.289688][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 90.289718][ C1] __netif_receive_skb_one_core+0xa8/0x1a0 [ 90.289730][ C1] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 90.289750][ C1] ? __netif_receive_skb_core+0x30b0/0x30b0 [ 90.296480][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.301225][ C1] ? lock_acquire+0x190/0x410 [ 90.306502][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.310702][ C1] ? process_backlog+0x195/0x750 [ 90.316384][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.319308][ C1] __netif_receive_skb+0x2c/0x1d0 [ 90.325548][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.328944][ C1] process_backlog+0x206/0x750 [ 90.335552][ T9666] netlink: 'syz-executor050': attribute type 1 has an invalid length. [ 90.339011][ C1] ? net_rx_action+0x27b/0x1120 [ 90.344685][ T9666] IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready [ 90.349310][ C1] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 90.357477][ T9666] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 90.358495][ C1] net_rx_action+0x508/0x1120 [ 90.363566][ T9666] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 90.368981][ C1] ? napi_busy_loop+0x970/0x970 [ 90.369002][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 90.640378][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 90.646372][ C1] ? trace_hardirqs_on+0x67/0x240 [ 90.651404][ C1] __do_softirq+0x262/0x98c [ 90.655930][ C1] ? takeover_tasklets+0x820/0x820 [ 90.661032][ C1] run_ksoftirqd+0x8e/0x110 [ 90.665527][ C1] smpboot_thread_fn+0x6a3/0xa40 [ 90.670473][ C1] ? __smpboot_create_thread.part.0+0x340/0x340 [ 90.676720][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 90.682959][ C1] ? __kthread_parkme+0x108/0x1c0 [ 90.688009][ C1] ? __kasan_check_read+0x11/0x20 [ 90.693190][ C1] kthread+0x361/0x430 [ 90.697482][ C1] ? __smpboot_create_thread.part.0+0x340/0x340 [ 90.703712][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 90.709441][ C1] ret_from_fork+0x24/0x30 [ 90.715344][ C1] Kernel Offset: disabled [ 90.719775][ C1] Rebooting in 86400 seconds..