[....] Starting enhanced syslogd: rsyslogd[ 16.862770] audit: type=1400 audit(1519746768.779:5): avc: denied { syslog } for pid=4090 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] 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 syzkaller login: [ 19.550116] audit: type=1400 audit(1519746771.466:6): avc: denied { map } for pid=4228 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts. executing program [ 25.844393] audit: type=1400 audit(1519746777.761:7): avc: denied { map } for pid=4242 comm="syzkaller027971" path="/root/syzkaller027971654" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 25.849569] xt_connbytes: Forcing CT accounting to be enabled [ 25.878460] WARNING: CPU: 1 PID: 4242 at net/netfilter/xt_cluster.c:55 xt_cluster_mt+0x6c1/0x840 [ 25.887420] Kernel panic - not syncing: panic_on_warn set ... [ 25.887420] [ 25.894765] CPU: 1 PID: 4242 Comm: syzkaller027971 Not tainted 4.16.0-rc2+ #243 [ 25.902181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.911508] Call Trace: [ 25.914081] dump_stack+0x194/0x24d [ 25.917685] ? arch_local_irq_restore+0x53/0x53 [ 25.922331] ? vsnprintf+0x1ed/0x1900 [ 25.926112] panic+0x1e4/0x41c [ 25.929277] ? refcount_error_report+0x214/0x214 [ 25.934006] ? show_regs_print_info+0x18/0x18 [ 25.938487] ? __warn+0x1c1/0x200 [ 25.941916] ? xt_cluster_mt+0x6c1/0x840 [ 25.945948] __warn+0x1dc/0x200 [ 25.949199] ? xt_cluster_mt+0x6c1/0x840 [ 25.953236] report_bug+0x211/0x2d0 [ 25.956840] fixup_bug.part.11+0x37/0x80 [ 25.960876] do_error_trap+0x2d7/0x3e0 [ 25.964738] ? rt_add_uncached_list+0x1b7/0x240 [ 25.969383] ? math_error+0x400/0x400 [ 25.973154] ? nf_nat_setup_info+0x3c9/0xe00 [ 25.977536] ? ip_vs_in+0xb98/0x24d0 [ 25.981224] ? nf_nat_proto_clean+0x1b0/0x1b0 [ 25.985699] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.990526] do_invalid_op+0x1b/0x20 [ 25.994230] invalid_op+0x58/0x80 [ 25.997656] RIP: 0010:xt_cluster_mt+0x6c1/0x840 [ 26.002302] RSP: 0018:ffff8801d2f6f2d0 EFLAGS: 00010293 [ 26.007640] RAX: ffff8801af700540 RBX: 0000000000000000 RCX: ffffffff84a2d1e1 [ 26.014897] RDX: 0000000000000000 RSI: ffff8801d2f6f478 RDI: ffff8801cafd336a [ 26.022143] RBP: ffff8801d2f6f2e8 R08: 0000000000000000 R09: 0000000000000001 [ 26.029396] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b03b3d18 [ 26.036639] R13: ffff8801cafd3300 R14: dffffc0000000000 R15: ffff8801d2f6f478 [ 26.043898] ? xt_cluster_mt+0x6c1/0x840 [ 26.047942] ipt_do_table+0xa91/0x19b0 [ 26.051806] ? nf_nat_setup_info+0xe00/0xe00 [ 26.056205] ? do_add_counters+0x550/0x550 [ 26.060416] ? nf_nat_ipv4_in_range+0xf0/0xf0 [ 26.064888] ? raw_send_hdrinc.isra.17+0xce0/0x1880 [ 26.069889] iptable_filter_hook+0x65/0x80 [ 26.074100] nf_hook_slow+0xba/0x1a0 [ 26.077791] raw_send_hdrinc.isra.17+0xf39/0x1880 [ 26.082615] ? raw_getsockopt+0xd0/0xd0 [ 26.086565] ? ip_route_output_key_hash+0x252/0x370 [ 26.091557] ? ip_route_output_key_hash_rcu+0x2fe0/0x2fe0 [ 26.097067] ? lock_release+0xa40/0xa40 [ 26.101021] ? raw_ioctl+0x240/0x240 [ 26.104707] ? xfrm_lookup_route+0x4f/0x1a0 [ 26.109008] raw_sendmsg+0x14cd/0x26b0 [ 26.112870] ? lock_acquire+0xf/0x580 [ 26.116653] ? raw_send_hdrinc.isra.17+0x1880/0x1880 [ 26.121733] ? avc_has_perm+0x43e/0x680 [ 26.125684] ? avc_has_perm_noaudit+0x520/0x520 [ 26.130325] ? check_noncircular+0x20/0x20 [ 26.134537] ? avc_has_perm+0x35e/0x680 [ 26.138490] ? find_held_lock+0x35/0x1d0 [ 26.142530] ? sock_has_perm+0x2a4/0x420 [ 26.146565] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 26.151900] ? lock_release+0x952/0xa40 [ 26.155848] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 26.161709] ? __check_object_size+0x8b/0x530 [ 26.166183] inet_sendmsg+0x11f/0x5e0 [ 26.169957] ? __might_sleep+0x95/0x190 [ 26.173905] ? inet_create+0xf50/0xf50 [ 26.177769] ? selinux_socket_sendmsg+0x36/0x40 [ 26.182416] ? security_socket_sendmsg+0x89/0xb0 [ 26.187146] ? inet_create+0xf50/0xf50 [ 26.191008] sock_sendmsg+0xca/0x110 [ 26.194698] SYSC_sendto+0x361/0x5c0 [ 26.198387] ? SYSC_connect+0x4a0/0x4a0 [ 26.202341] ? __do_page_fault+0x5f7/0xc90 [ 26.206549] ? lock_downgrade+0x980/0x980 [ 26.210674] ? handle_mm_fault+0x531/0xb00 [ 26.214880] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 26.220748] ? up_read+0x1a/0x40 [ 26.224086] ? __do_page_fault+0x3d6/0xc90 [ 26.228300] ? mm_fault_error+0x2c0/0x2c0 [ 26.232421] ? move_addr_to_kernel+0x60/0x60 [ 26.236803] SyS_sendto+0x40/0x50 [ 26.240232] ? SyS_getpeername+0x30/0x30 [ 26.244269] do_syscall_64+0x280/0x940 [ 26.248128] ? __do_page_fault+0xc90/0xc90 [ 26.252334] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.257064] ? syscall_return_slowpath+0x550/0x550 [ 26.261967] ? syscall_return_slowpath+0x2ac/0x550 [ 26.266872] ? prepare_exit_to_usermode+0x350/0x350 [ 26.271863] ? retint_user+0x18/0x18 [ 26.275555] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.280376] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 26.285541] RIP: 0033:0x441b49 [ 26.288703] RSP: 002b:00007ffff5ca8b18 EFLAGS: 00000216 ORIG_RAX: 000000000000002c [ 26.296385] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441b49 [ 26.303629] RDX: 0000000000000030 RSI: 0000000020ff7000 RDI: 0000000000000003 [ 26.310870] RBP: 00000000006cc018 R08: 000000002066354c R09: 0000000000000010 [ 26.318115] R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000403470 [ 26.325356] R13: 0000000000403500 R14: 0000000000000000 R15: 0000000000000000 [ 26.333155] Dumping ftrace buffer: [ 26.336761] (ftrace buffer empty) [ 26.340443] Kernel Offset: disabled [ 26.344044] Rebooting in 86400 seconds..