[ 43.470936] audit: type=1800 audit(1582406150.272:29): pid=7992 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0 [ 43.507825] audit: type=1800 audit(1582406150.282:30): pid=7992 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.142' (ECDSA) to the list of known hosts. syzkaller login: [ 52.506314] kauditd_printk_skb: 5 callbacks suppressed [ 52.506330] audit: type=1400 audit(1582406159.312:36): avc: denied { map } for pid=8177 comm="syz-executor876" path="/root/syz-executor876777653" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 52.526066] IPVS: ftp: loaded support on port[0] = 21 [ 52.588666] chnl_net:caif_netlink_parms(): no params data found [ 52.635957] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.642801] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.650068] device bridge_slave_0 entered promiscuous mode [ 52.657854] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.664432] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.671374] device bridge_slave_1 entered promiscuous mode [ 52.686925] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.696571] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.712620] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.720164] team0: Port device team_slave_0 added [ 52.725975] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.733327] team0: Port device team_slave_1 added [ 52.750763] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.757133] 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. [ 52.782383] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.794154] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.800403] 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. [ 52.826438] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.837366] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.845088] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.893728] device hsr_slave_0 entered promiscuous mode [ 52.932212] device hsr_slave_1 entered promiscuous mode [ 52.972551] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.979664] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 53.026643] audit: type=1400 audit(1582406159.832:37): avc: denied { create } for pid=8178 comm="syz-executor876" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 53.048945] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.052159] audit: type=1400 audit(1582406159.832:38): avc: denied { write } for pid=8178 comm="syz-executor876" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 53.057526] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.083664] audit: type=1400 audit(1582406159.842:39): avc: denied { read } for pid=8178 comm="syz-executor876" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 53.088854] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.118580] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.154146] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 53.160339] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.169183] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.178493] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.197346] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.204783] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.212889] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.223065] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 53.229252] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.238946] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.246765] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.253315] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.273008] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.280686] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.287137] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.295656] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.304790] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.313140] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.327154] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 53.337505] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.348253] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 53.354948] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.363755] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.371535] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.386384] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 53.394095] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.400786] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.411424] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.425595] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 53.435117] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.478491] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 53.485767] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 53.493655] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 53.503200] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.510771] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.517886] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.526865] device veth0_vlan entered promiscuous mode [ 53.537844] device veth1_vlan entered promiscuous mode [ 53.544547] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 53.553749] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 53.566369] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 53.576424] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.584145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.592438] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.602237] device veth0_macvtap entered promiscuous mode [ 53.610429] device veth1_macvtap entered promiscuous mode [ 53.619834] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 53.630339] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 53.640042] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 53.648162] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.656022] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.664236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.675318] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 53.682711] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.689593] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.697870] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 53.820918] audit: type=1305 audit(1582406160.622:40): audit_failure=2 old=1 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 res=1 [ 53.836593] audit: type=1305 audit(1582406160.622:41): audit_pid=0 old=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 res=1 [ 53.838663] audit: audit_backlog=3 > audit_backlog_limit=2 [ 53.852446] audit: type=1305 audit(1582406160.622:42): audit_rate_limit=4294967295 old=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 res=1 [ 53.858240] audit: audit_lost=1 audit_rate_limit=4294967295 audit_backlog_limit=2 [ 53.874569] audit: type=1305 audit(1582406160.622:43): audit_backlog_limit=2 old=64 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 res=1 [ 53.882503] Kernel panic - not syncing: audit: backlog limit exceeded [ 53.882503] [ 53.904684] CPU: 1 PID: 8178 Comm: syz-executor876 Not tainted 4.19.105-syzkaller #0 [ 53.912580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.922071] Call Trace: [ 53.924812] dump_stack+0x197/0x210 [ 53.928664] panic+0x26a/0x50e [ 53.931978] ? __warn_printk+0xf3/0xf3 [ 53.935881] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 53.940772] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 53.945882] ? audit_panic+0x24/0x70 [ 53.949703] audit_panic.cold+0x32/0x32 [ 53.953754] audit_log_lost+0x8b/0x180 [ 53.957692] audit_log_start+0x6f7/0x7a0 [ 53.961758] ? audit_serial+0x30/0x30 [ 53.965580] ? __lock_is_held+0xb6/0x140 [ 53.969651] ? __lock_is_held+0xb6/0x140 [ 53.973716] audit_log+0x95/0x120 [ 53.977158] ? audit_log_start+0x7a0/0x7a0 [ 53.981386] ? mark_held_locks+0xb1/0x100 [ 53.985539] ? __local_bh_enable_ip+0x15a/0x270 [ 53.990247] ? xt_replace_table+0x361/0x830 [ 53.994569] ? __local_bh_enable_ip+0x15a/0x270 [ 53.999257] ? lockdep_hardirqs_on+0x415/0x5d0 [ 54.003946] ? xt_replace_table+0x33d/0x830 [ 54.008261] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 54.013282] ? find_next_bit+0x107/0x130 [ 54.017351] xt_replace_table+0x61d/0x830 [ 54.021515] __do_replace+0x1da/0x930 [ 54.025410] ? compat_table_info+0x500/0x500 [ 54.030358] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 54.035892] ? _copy_from_user+0xdd/0x150 [ 54.040035] do_ip6t_set_ctl+0x327/0x498 [ 54.044100] ? compat_do_ip6t_set_ctl+0x160/0x160 [ 54.049154] ? mutex_unlock+0xd/0x10 [ 54.052882] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 54.058175] nf_setsockopt+0x77/0xd0 [ 54.061898] ipv6_setsockopt+0x13e/0x170 [ 54.065971] tcp_setsockopt+0x8f/0xe0 [ 54.069882] sock_common_setsockopt+0x94/0xd0 [ 54.074381] __sys_setsockopt+0x17a/0x280 [ 54.078741] ? kernel_accept+0x310/0x310 [ 54.082814] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 54.087636] ? do_syscall_64+0x26/0x620 [ 54.091616] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.096996] ? do_syscall_64+0x26/0x620 [ 54.101489] __x64_sys_setsockopt+0xbe/0x150 [ 54.105954] do_syscall_64+0xfd/0x620 [ 54.109806] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.115116] RIP: 0033:0x44720a [ 54.118340] 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 [ 54.137253] RSP: 002b:00007ffea7d694e8 EFLAGS: 00000282 ORIG_RAX: 0000000000000036 [ 54.144965] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044720a [ 54.152399] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 54.159815] RBP: 00007ffea7d69610 R08: 00000000000003b8 R09: 0000000000004000 [ 54.167079] R10: 00000000006d7b40 R11: 0000000000000282 R12: 00007ffea7d69510 [ 54.174347] R13: 00000000006d9d60 R14: 0000000000000029 R15: 00000000006d7ba0 [ 54.183884] Kernel Offset: disabled [ 54.187586] Rebooting in 86400 seconds..