[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 65.305213][ T27] audit: type=1800 audit(1584917423.881:25): pid=9374 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.351654][ T27] audit: type=1800 audit(1584917423.881:26): pid=9374 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.381013][ T27] audit: type=1800 audit(1584917423.881:27): pid=9374 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 '10.128.0.205' (ECDSA) to the list of known hosts. syzkaller login: [ 81.341894][ T9527] IPVS: ftp: loaded support on port[0] = 21 [ 81.406073][ T9527] chnl_net:caif_netlink_parms(): no params data found [ 81.445617][ T9527] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.453273][ T9527] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.461038][ T9527] device bridge_slave_0 entered promiscuous mode [ 81.469802][ T9527] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.476947][ T9527] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.484877][ T9527] device bridge_slave_1 entered promiscuous mode [ 81.502877][ T9527] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.514898][ T9527] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.534785][ T9527] team0: Port device team_slave_0 added [ 81.542288][ T9527] team0: Port device team_slave_1 added [ 81.558159][ T9527] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.565226][ T9527] 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. [ 81.591273][ T9527] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.603584][ T9527] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.610520][ T9527] 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. [ 81.636548][ T9527] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.715201][ T9527] device hsr_slave_0 entered promiscuous mode [ 81.753529][ T9527] device hsr_slave_1 entered promiscuous mode [ 81.890828][ T9527] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.936223][ T9527] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.005763][ T9527] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.045898][ T9527] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.128675][ T9527] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.135847][ T9527] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.143644][ T9527] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.150699][ T9527] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.198309][ T9527] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.210915][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.220637][ T2825] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.228546][ T2825] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.236833][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 82.249781][ T9527] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.260531][ T3001] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.269157][ T3001] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.276221][ T3001] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.287573][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.296850][ T2825] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.303918][ T2825] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.324460][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.333209][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.351071][ T9527] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 82.361785][ T9527] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 82.374937][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.384075][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.392596][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.401368][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.424943][ T9527] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.432104][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.440229][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.461176][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.470453][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.491233][ T9527] device veth0_vlan entered promiscuous mode [ 82.498354][ T2937] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.508300][ T2937] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.521654][ T9527] device veth1_vlan entered promiscuous mode [ 82.529411][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.537332][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.545127][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.567094][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.576631][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.585533][ T2825] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.595705][ T9527] device veth0_macvtap entered promiscuous mode [ 82.606803][ T9527] device veth1_macvtap entered promiscuous mode [ 82.623936][ T9527] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.631343][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.639921][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.648470][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.657433][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.671071][ T9527] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.679124][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.688718][ T2942] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 82.875570][ T9532] ------------[ cut here ]------------ [ 82.881062][ T9532] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 82.890005][ T9532] WARNING: CPU: 1 PID: 9532 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 82.899461][ T9532] Kernel panic - not syncing: panic_on_warn set ... [ 82.906035][ T9532] CPU: 1 PID: 9532 Comm: syz-executor337 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0 [ 82.915901][ T9532] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.925933][ T9532] Call Trace: [ 82.929216][ T9532] dump_stack+0x188/0x20d [ 82.933552][ T9532] ? debug_print_object+0xb0/0x250 [ 82.938658][ T9532] panic+0x2e3/0x75c [ 82.942538][ T9532] ? add_taint.cold+0x16/0x16 [ 82.947363][ T9532] ? __probe_kernel_read+0x188/0x1d0 [ 82.952632][ T9532] ? __warn.cold+0x14/0x35 [ 82.957032][ T9532] ? __warn+0xd5/0x1c8 [ 82.961094][ T9532] ? debug_print_object+0x160/0x250 [ 82.966273][ T9532] __warn.cold+0x2f/0x35 [ 82.970499][ T9532] ? debug_print_object+0x160/0x250 [ 82.975680][ T9532] report_bug+0x27b/0x2f0 [ 82.979996][ T9532] do_error_trap+0x12b/0x220 [ 82.984607][ T9532] ? debug_print_object+0x160/0x250 [ 82.989852][ T9532] do_invalid_op+0x32/0x40 [ 82.994277][ T9532] ? debug_print_object+0x160/0x250 [ 82.999473][ T9532] invalid_op+0x23/0x30 [ 83.003655][ T9532] RIP: 0010:debug_print_object+0x160/0x250 [ 83.009477][ T9532] 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 [ 83.029068][ T9532] RSP: 0018:ffffc90002087168 EFLAGS: 00010286 [ 83.035116][ T9532] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 83.043134][ T9532] RDX: 0000000000000000 RSI: ffffffff815c4e91 RDI: fffff52000410e1f [ 83.051082][ T9532] RBP: 0000000000000001 R08: ffff888096b122c0 R09: fffffbfff1852704 [ 83.059197][ T9532] R10: fffffbfff1852703 R11: ffffffff8c29381f R12: ffffffff899adb60 [ 83.067181][ T9532] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000410e3a [ 83.075151][ T9532] ? vprintk_func+0x81/0x17e [ 83.079724][ T9532] ? debug_print_object+0x160/0x250 [ 83.084913][ T9532] ? lockdep_hardirqs_on+0x417/0x5d0 [ 83.090180][ T9532] debug_object_activate+0x346/0x470 [ 83.095449][ T9532] ? debug_object_init_on_stack+0x20/0x20 [ 83.101149][ T9532] ? route4_change+0xbb4/0x2250 [ 83.105982][ T9532] ? lock_downgrade+0x7f0/0x7f0 [ 83.110812][ T9532] ? delayed_work_timer_fn+0x90/0x90 [ 83.116178][ T9532] call_rcu+0x2c/0x7e0 [ 83.120228][ T9532] queue_rcu_work+0x82/0xa0 [ 83.124729][ T9532] route4_change+0xe8e/0x2250 [ 83.129425][ T9532] ? route4_destroy+0x820/0x820 [ 83.134285][ T9532] ? wait_for_completion+0x3c0/0x3c0 [ 83.139574][ T9532] tc_new_tfilter+0xa59/0x20b0 [ 83.144327][ T9532] ? route4_destroy+0x820/0x820 [ 83.149208][ T9532] ? tc_del_tfilter+0x1430/0x1430 [ 83.154260][ T9532] ? apparmor_capable+0x49c/0x8a0 [ 83.159275][ T9532] ? rcu_read_lock_held+0x9c/0xb0 [ 83.164287][ T9532] ? tc_del_tfilter+0x1430/0x1430 [ 83.169289][ T9532] rtnetlink_rcv_msg+0x810/0xad0 [ 83.174211][ T9532] ? rtnl_bridge_getlink+0x880/0x880 [ 83.179474][ T9532] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 83.184796][ T9532] ? __copy_skb_header+0x290/0x5b0 [ 83.189887][ T9532] ? skb_splice_bits+0x1a0/0x1a0 [ 83.194808][ T9532] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 83.200590][ T9532] ? kmem_cache_alloc+0x261/0x730 [ 83.205595][ T9532] netlink_rcv_skb+0x15a/0x410 [ 83.210338][ T9532] ? rtnl_bridge_getlink+0x880/0x880 [ 83.215601][ T9532] ? netlink_ack+0xa80/0xa80 [ 83.220180][ T9532] netlink_unicast+0x537/0x740 [ 83.224940][ T9532] ? netlink_attachskb+0x810/0x810 [ 83.230043][ T9532] ? _copy_from_iter_full+0x25c/0x870 [ 83.235405][ T9532] ? __phys_addr_symbol+0x2c/0x70 [ 83.240425][ T9532] ? __check_object_size+0x171/0x437 [ 83.245704][ T9532] netlink_sendmsg+0x882/0xe10 [ 83.250455][ T9532] ? aa_af_perm+0x260/0x260 [ 83.254940][ T9532] ? netlink_unicast+0x740/0x740 [ 83.259912][ T9532] ? netlink_unicast+0x740/0x740 [ 83.264835][ T9532] sock_sendmsg+0xcf/0x120 [ 83.269264][ T9532] ____sys_sendmsg+0x6b9/0x7d0 [ 83.274010][ T9532] ? kernel_sendmsg+0x50/0x50 [ 83.278673][ T9532] ___sys_sendmsg+0x100/0x170 [ 83.283372][ T9532] ? sendmsg_copy_msghdr+0x70/0x70 [ 83.288467][ T9532] ? __fget_files+0x329/0x4f0 [ 83.293140][ T9532] ? do_dup2+0x520/0x520 [ 83.297377][ T9532] ? __fget_light+0x208/0x270 [ 83.302055][ T9532] __sys_sendmsg+0xec/0x1b0 [ 83.306550][ T9532] ? __sys_sendmsg_sock+0xb0/0xb0 [ 83.311552][ T9532] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 83.317512][ T9532] ? __x64_sys_futex+0x380/0x4f0 [ 83.322437][ T9532] ? trace_hardirqs_off_caller+0x55/0x230 [ 83.328141][ T9532] ? do_syscall_64+0x21/0x790 [ 83.332797][ T9532] do_syscall_64+0xf6/0x790 [ 83.337291][ T9532] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.343158][ T9532] RIP: 0033:0x449519 [ 83.347028][ T9532] 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 9b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 83.366614][ T9532] RSP: 002b:00007fa823504d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.375001][ T9532] RAX: ffffffffffffffda RBX: 00000000006dfc68 RCX: 0000000000449519 [ 83.382961][ T9532] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 83.392619][ T9532] RBP: 00000000006dfc60 R08: 0000000000000000 R09: 0000000000000000 [ 83.400573][ T9532] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dfc6c [ 83.408561][ T9532] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 83.417867][ T9532] Kernel Offset: disabled [ 83.422313][ T9532] Rebooting in 86400 seconds..