[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.325700][ T27] audit: type=1800 audit(1584919738.170:25): pid=9266 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 66.346635][ T27] audit: type=1800 audit(1584919738.180:26): pid=9266 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 66.414351][ T27] audit: type=1800 audit(1584919738.180:27): pid=9266 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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.196' (ECDSA) to the list of known hosts. syzkaller login: [ 75.672612][ T9419] IPVS: ftp: loaded support on port[0] = 21 [ 75.725440][ T9419] chnl_net:caif_netlink_parms(): no params data found [ 75.765044][ T9419] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.772589][ T9419] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.780657][ T9419] device bridge_slave_0 entered promiscuous mode [ 75.789147][ T9419] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.796290][ T9419] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.804342][ T9419] device bridge_slave_1 entered promiscuous mode [ 75.823276][ T9419] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.834287][ T9419] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.854802][ T9419] team0: Port device team_slave_0 added [ 75.862805][ T9419] team0: Port device team_slave_1 added [ 75.879008][ T9419] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.885971][ T9419] 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. [ 75.912165][ T9419] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.925649][ T9419] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.933284][ T9419] 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. [ 75.960041][ T9419] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.038956][ T9419] device hsr_slave_0 entered promiscuous mode [ 76.076855][ T9419] device hsr_slave_1 entered promiscuous mode [ 76.214632][ T9419] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.249573][ T9419] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.329212][ T9419] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.378775][ T9419] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.432847][ T9419] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.440069][ T9419] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.447935][ T9419] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.455045][ T9419] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.500304][ T9419] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.514657][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.524505][ T2695] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.533726][ T2695] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.542053][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.555256][ T9419] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.567005][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.575707][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.583085][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.594949][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.604246][ T2695] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.611408][ T2695] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.638429][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.648162][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.657162][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.665814][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.679686][ T9419] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 76.691799][ T9419] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.701226][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.724834][ T9419] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.732555][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.740889][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.765866][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.774959][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.794749][ T9419] device veth0_vlan entered promiscuous mode [ 76.802212][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.811454][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.820801][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.829350][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.842333][ T9419] device veth1_vlan entered promiscuous mode [ 76.862041][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.870357][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.878576][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.887399][ T2705] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.898293][ T9419] device veth0_macvtap entered promiscuous mode [ 76.909156][ T9419] device veth1_macvtap entered promiscuous mode [ 76.926946][ T9419] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.934414][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.943663][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.952085][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.960768][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.972164][ T9419] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.980937][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.989941][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 77.168075][ T9424] ------------[ cut here ]------------ [ 77.173570][ T9424] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 77.183244][ T9424] WARNING: CPU: 1 PID: 9424 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 77.192705][ T9424] Kernel panic - not syncing: panic_on_warn set ... [ 77.199391][ T9424] CPU: 1 PID: 9424 Comm: syz-executor000 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0 [ 77.209271][ T9424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.219307][ T9424] Call Trace: [ 77.222602][ T9424] dump_stack+0x188/0x20d [ 77.226923][ T9424] ? debug_print_object+0xb0/0x250 [ 77.232029][ T9424] panic+0x2e3/0x75c [ 77.235926][ T9424] ? add_taint.cold+0x16/0x16 [ 77.240600][ T9424] ? __probe_kernel_read+0x188/0x1d0 [ 77.245866][ T9424] ? __warn.cold+0x14/0x35 [ 77.250265][ T9424] ? __warn+0xd5/0x1c8 [ 77.254322][ T9424] ? debug_print_object+0x160/0x250 [ 77.259604][ T9424] __warn.cold+0x2f/0x35 [ 77.263847][ T9424] ? debug_print_object+0x160/0x250 [ 77.269147][ T9424] report_bug+0x27b/0x2f0 [ 77.273481][ T9424] do_error_trap+0x12b/0x220 [ 77.278070][ T9424] ? debug_print_object+0x160/0x250 [ 77.283263][ T9424] do_invalid_op+0x32/0x40 [ 77.287665][ T9424] ? debug_print_object+0x160/0x250 [ 77.292855][ T9424] invalid_op+0x23/0x30 [ 77.297246][ T9424] RIP: 0010:debug_print_object+0x160/0x250 [ 77.303058][ T9424] Code: dd 00 25 72 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 00 25 72 88 48 c7 c7 60 1a 72 88 e8 48 06 b1 fd <0f> 0b 83 05 bb f8 f2 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 77.322701][ T9424] RSP: 0018:ffffc90002167168 EFLAGS: 00010286 [ 77.328779][ T9424] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 77.336733][ T9424] RDX: 0000000000000000 RSI: ffffffff815c4e91 RDI: fffff5200042ce1f [ 77.344683][ T9424] RBP: 0000000000000001 R08: ffff8880a1bc85c0 R09: ffffed1015ce6661 [ 77.352637][ T9424] R10: ffffed1015ce6660 R11: ffff8880ae733307 R12: ffffffff899adb60 [ 77.360605][ T9424] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200042ce3a [ 77.368577][ T9424] ? vprintk_func+0x81/0x17e [ 77.373167][ T9424] ? debug_print_object+0x160/0x250 [ 77.378344][ T9424] ? lockdep_hardirqs_on+0x417/0x5d0 [ 77.383608][ T9424] debug_object_activate+0x346/0x470 [ 77.388907][ T9424] ? debug_object_init_on_stack+0x20/0x20 [ 77.394661][ T9424] ? route4_change+0xbb4/0x2250 [ 77.399509][ T9424] ? lock_downgrade+0x7f0/0x7f0 [ 77.404358][ T9424] ? delayed_work_timer_fn+0x90/0x90 [ 77.409657][ T9424] call_rcu+0x2c/0x7e0 [ 77.413713][ T9424] queue_rcu_work+0x82/0xa0 [ 77.418207][ T9424] route4_change+0xe8e/0x2250 [ 77.422871][ T9424] ? route4_destroy+0x820/0x820 [ 77.427712][ T9424] ? wait_for_completion+0x3c0/0x3c0 [ 77.433092][ T9424] tc_new_tfilter+0xa59/0x20b0 [ 77.437860][ T9424] ? route4_destroy+0x820/0x820 [ 77.442728][ T9424] ? tc_del_tfilter+0x1430/0x1430 [ 77.447752][ T9424] ? apparmor_capable+0x49c/0x8a0 [ 77.452775][ T9424] ? rcu_read_lock_held+0x9c/0xb0 [ 77.457792][ T9424] ? tc_del_tfilter+0x1430/0x1430 [ 77.462812][ T9424] rtnetlink_rcv_msg+0x810/0xad0 [ 77.467738][ T9424] ? rtnl_bridge_getlink+0x880/0x880 [ 77.473018][ T9424] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.478301][ T9424] ? __copy_skb_header+0x290/0x5b0 [ 77.483391][ T9424] ? skb_splice_bits+0x1a0/0x1a0 [ 77.488320][ T9424] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 77.494112][ T9424] ? kmem_cache_alloc+0x261/0x730 [ 77.499216][ T9424] netlink_rcv_skb+0x15a/0x410 [ 77.504120][ T9424] ? rtnl_bridge_getlink+0x880/0x880 [ 77.509402][ T9424] ? netlink_ack+0xa80/0xa80 [ 77.513984][ T9424] netlink_unicast+0x537/0x740 [ 77.518731][ T9424] ? netlink_attachskb+0x810/0x810 [ 77.523835][ T9424] ? _copy_from_iter_full+0x25c/0x870 [ 77.529203][ T9424] ? __phys_addr_symbol+0x2c/0x70 [ 77.534255][ T9424] ? __check_object_size+0x171/0x437 [ 77.539752][ T9424] netlink_sendmsg+0x882/0xe10 [ 77.544687][ T9424] ? aa_af_perm+0x260/0x260 [ 77.549189][ T9424] ? netlink_unicast+0x740/0x740 [ 77.554152][ T9424] ? netlink_unicast+0x740/0x740 [ 77.559082][ T9424] sock_sendmsg+0xcf/0x120 [ 77.563570][ T9424] ____sys_sendmsg+0x6b9/0x7d0 [ 77.568329][ T9424] ? kernel_sendmsg+0x50/0x50 [ 77.572999][ T9424] ___sys_sendmsg+0x100/0x170 [ 77.577661][ T9424] ? sendmsg_copy_msghdr+0x70/0x70 [ 77.582760][ T9424] ? __fget_files+0x329/0x4f0 [ 77.587420][ T9424] ? do_dup2+0x520/0x520 [ 77.591649][ T9424] ? __fget_light+0x208/0x270 [ 77.596310][ T9424] __sys_sendmsg+0xec/0x1b0 [ 77.600817][ T9424] ? __sys_sendmsg_sock+0xb0/0xb0 [ 77.605823][ T9424] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 77.611782][ T9424] ? __x64_sys_futex+0x380/0x4f0 [ 77.616712][ T9424] ? trace_hardirqs_off_caller+0x55/0x230 [ 77.622423][ T9424] ? do_syscall_64+0x21/0x790 [ 77.627083][ T9424] do_syscall_64+0xf6/0x790 [ 77.631580][ T9424] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.637452][ T9424] RIP: 0033:0x448ff9 [ 77.641429][ T9424] Code: e8 cc 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.661022][ T9424] RSP: 002b:00007f04a1e2bd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.669425][ T9424] RAX: ffffffffffffffda RBX: 00000000006dec68 RCX: 0000000000448ff9 [ 77.677442][ T9424] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 77.685409][ T9424] RBP: 00000000006dec60 R08: 0000000000000000 R09: 0000000000000000 [ 77.693610][ T9424] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec6c [ 77.701579][ T9424] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 77.711090][ T9424] Kernel Offset: disabled [ 77.715422][ T9424] Rebooting in 86400 seconds..