[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 58.651456][ T26] audit: type=1800 audit(1582445278.343:25): pid=8726 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 58.673880][ T26] audit: type=1800 audit(1582445278.353:26): pid=8726 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 58.693873][ T26] audit: type=1800 audit(1582445278.353:27): pid=8726 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.1.10' (ECDSA) to the list of known hosts. syzkaller login: [ 68.811291][ T8878] IPVS: ftp: loaded support on port[0] = 21 [ 68.855021][ T8878] chnl_net:caif_netlink_parms(): no params data found [ 68.889358][ T8878] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.898948][ T8878] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.908094][ T8878] device bridge_slave_0 entered promiscuous mode [ 68.916683][ T8878] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.924217][ T8878] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.932636][ T8878] device bridge_slave_1 entered promiscuous mode [ 68.951337][ T8878] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.964756][ T8878] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.983548][ T8878] team0: Port device team_slave_0 added [ 68.991255][ T8878] team0: Port device team_slave_1 added [ 69.006046][ T8878] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.013912][ T8878] 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. [ 69.043042][ T8878] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.056611][ T8878] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.064536][ T8878] 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. [ 69.091459][ T8878] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.144224][ T8878] device hsr_slave_0 entered promiscuous mode [ 69.222730][ T8878] device hsr_slave_1 entered promiscuous mode [ 69.325442][ T8878] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.375186][ T8878] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.424761][ T8878] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.464808][ T8878] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.525856][ T8878] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.533251][ T8878] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.541007][ T8878] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.548204][ T8878] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.585629][ T8878] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.597855][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.609477][ T2897] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.617639][ T2897] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.625572][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.638435][ T8878] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.648859][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.657853][ T2911] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.665202][ T2911] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.676118][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.684963][ T2897] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.691995][ T2897] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.713741][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.723503][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.731822][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.742285][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.750706][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.761609][ T8878] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.778348][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.786675][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.799012][ T8878] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.815499][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.833912][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.843470][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.851858][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.861120][ T8878] device veth0_vlan entered promiscuous mode [ 69.872529][ T8878] device veth1_vlan entered promiscuous mode [ 69.891823][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 69.901379][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.911911][ T8878] device veth0_macvtap entered promiscuous mode [ 69.921997][ T8878] device veth1_macvtap entered promiscuous mode [ 69.936170][ T8878] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 69.944149][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 69.953415][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 69.961306][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 69.970405][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 69.983807][ T8878] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 69.993044][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.001462][ T2911] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program [ 70.134472][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 70.134480][ T26] audit: type=1305 audit(1582445289.833:31): op=set audit_failure=2 old=1 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.153123][ T26] audit: type=1305 audit(1582445289.833:32): op=set audit_pid=0 old=0 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.166249][ T26] audit: type=1305 audit(1582445289.833:33): op=set audit_rate_limit=4294967295 old=0 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.166911][ T8878] audit: audit_backlog=14 > audit_backlog_limit=2 [ 70.179910][ T26] audit: type=1305 audit(1582445289.833:34): op=set audit_backlog_limit=2 old=64 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.179929][ T26] audit: type=1305 audit(1582445289.833:35): op=set audit_backlog_wait_time=0 old=6000 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.179949][ T26] audit: type=1305 audit(1582445289.853:36): op=set audit_enabled=1 old=1 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.179964][ T26] audit: type=1305 audit(1582445289.853:36): op=set audit_failure=2 old=2 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.179978][ T26] audit: type=1305 audit(1582445289.853:36): op=set audit_pid=0 old=0 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.179992][ T26] audit: type=1305 audit(1582445289.853:36): op=set audit_rate_limit=4294967295 old=4294967295 auid=4294967295 ses=4294967295 subj=_ res=1 [ 70.264173][ T8878] Kernel panic - not syncing: audit: backlog limit exceeded [ 70.264186][ T8878] CPU: 1 PID: 8878 Comm: syz-executor927 Not tainted 5.6.0-rc2-syzkaller #0 [ 70.264191][ T8878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.264195][ T8878] Call Trace: [ 70.264215][ T8878] dump_stack+0x1fb/0x318 [ 70.264232][ T8878] panic+0x264/0x7a9 [ 70.264247][ T8878] ? audit_log_lost+0x114/0x1e0 [ 70.264265][ T8878] audit_log_lost+0x1d7/0x1e0 [ 70.264277][ T8878] audit_log_start+0x3d1/0x820 [ 70.264305][ T8878] audit_log+0x4a/0xc0 [ 70.320454][ T8878] ? local_bh_enable+0x9/0x30 [ 70.325368][ T8878] xt_replace_table+0x61b/0x7a0 [ 70.330229][ T8878] __do_replace+0x11b/0x970 [ 70.334724][ T8878] do_ip6t_set_ctl+0x363/0x550 [ 70.339492][ T8878] nf_setsockopt+0x27a/0x2a0 [ 70.344077][ T8878] ipv6_setsockopt+0x9a/0x160 [ 70.348865][ T8878] tcp_setsockopt+0xbe/0xd0 [ 70.353358][ T8878] sock_common_setsockopt+0x99/0xb0 [ 70.358539][ T8878] ? sock_common_recvmsg+0x190/0x190 [ 70.363818][ T8878] __sys_setsockopt+0x582/0x720 [ 70.368669][ T8878] __x64_sys_setsockopt+0xbf/0xd0 [ 70.373684][ T8878] do_syscall_64+0xf7/0x1c0 [ 70.378183][ T8878] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.384062][ T8878] RIP: 0033:0x44720a [ 70.387982][ T8878] Code: 49 89 ca b8 37 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1a e0 fb ff c3 66 0f 1f 84 00 00 00 00 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 fa df fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 70.407689][ T8878] RSP: 002b:00007ffddd72bbf8 EFLAGS: 00000282 ORIG_RAX: 0000000000000036 [ 70.416089][ T8878] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044720a [ 70.424053][ T8878] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 70.432024][ T8878] RBP: 00007ffddd72bd20 R08: 00000000000003b8 R09: 0000000000004000 [ 70.439989][ T8878] R10: 00000000006d7b40 R11: 0000000000000282 R12: 00007ffddd72bc20 [ 70.447956][ T8878] R13: 00000000006d9d60 R14: 0000000000000029 R15: 00000000006d7ba0 [ 70.457477][ T8878] Kernel Offset: disabled [ 70.461884][ T8878] Rebooting in 86400 seconds..