[....] Starting enhanced syslogd: rsyslogd[ 16.218058] audit: type=1400 audit(1518423512.991:5): avc: denied { syslog } for pid=4016 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: [ 18.738244] audit: type=1400 audit(1518423515.511:6): avc: denied { map } for pid=4154 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 '10.128.0.25' (ECDSA) to the list of known hosts. executing program [ 25.055089] audit: type=1400 audit(1518423521.828:7): avc: denied { map } for pid=4168 comm="syzkaller034710" path="/root/syzkaller034710356" 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 [ 25.081070] audit: type=1400 audit(1518423521.829:8): avc: denied { name_connect } for pid=4168 comm="syzkaller034710" dest=20002 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 [ 25.081502] divide error: 0000 [#1] SMP KASAN [ 25.108363] Dumping ftrace buffer: [ 25.111874] (ftrace buffer empty) [ 25.115553] Modules linked in: [ 25.118717] CPU: 1 PID: 4168 Comm: syzkaller034710 Not tainted 4.16.0-rc1+ #309 [ 25.126132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.135464] RIP: 0010:nf_nat_l4proto_unique_tuple+0x291/0x530 [ 25.141315] RSP: 0018:ffff8801b2466778 EFLAGS: 00010246 [ 25.146647] RAX: 000000000000f153 RBX: ffff8801b2466dd8 RCX: ffff8801b2466c7c [ 25.153888] RDX: 0000000000000000 RSI: ffff8801b2466c58 RDI: ffff8801db5293ac [ 25.161130] RBP: ffff8801b24667d8 R08: ffff8801b8ba6dc0 R09: ffffffff88af5900 [ 25.168369] R10: ffff8801b24666f0 R11: 0000000000000000 R12: 000000002990f153 [ 25.175609] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b2466c7c [ 25.182850] FS: 00000000017e3880(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 25.191052] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.196907] CR2: 00000000208fdfe4 CR3: 00000001b5340002 CR4: 00000000001606e0 [ 25.204148] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.211388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.218628] Call Trace: [ 25.221197] dccp_unique_tuple+0x40/0x50 [ 25.225233] get_unique_tuple+0xc28/0x1c10 [ 25.229442] ? __kernel_text_address+0xd/0x40 [ 25.233918] ? check_noncircular+0x20/0x20 [ 25.238124] ? hash_by_src+0x380/0x380 [ 25.241981] ? add_lock_to_list.isra.29+0x24d/0x352 [ 25.246969] ? check_noncircular+0x20/0x20 [ 25.251178] ? save_stack_trace+0x1a/0x20 [ 25.255299] ? find_held_lock+0x35/0x1d0 [ 25.259336] ? nf_ct_invert_tuplepr+0x226/0x390 [ 25.263976] ? lock_downgrade+0x980/0x980 [ 25.268096] ? __lock_is_held+0xb6/0x140 [ 25.272130] ? nf_ct_invert_tuple+0x1b9/0x220 [ 25.276595] ? nf_ct_invert_tuplepr+0x24f/0x390 [ 25.281235] ? destroy_conntrack+0x2f0/0x2f0 [ 25.285614] ? nf_ct_ext_add+0x2d0/0x6c0 [ 25.289649] nf_nat_setup_info+0x1c2/0xe00 [ 25.293858] ? nf_nat_proto_clean+0x1b0/0x1b0 [ 25.298326] ? check_noncircular+0x20/0x20 [ 25.302536] ? print_irqtrace_events+0x270/0x270 [ 25.307262] ? find_held_lock+0x35/0x1d0 [ 25.311300] nf_nat_redirect_ipv6+0x306/0x730 [ 25.315789] ? sctp_csum_update+0x30/0x30 [ 25.319930] ? mark_held_locks+0xaf/0x100 [ 25.324068] ? print_irqtrace_events+0x270/0x270 [ 25.328802] ? __nf_ct_refresh_acct+0x10e/0x260 [ 25.333450] redirect_tg6+0x7f/0xb0 [ 25.337053] ip6t_do_table+0xc2a/0x1a30 [ 25.340998] ? mark_held_locks+0xaf/0x100 [ 25.345123] ? __local_bh_enable_ip+0x121/0x230 [ 25.349771] ? nf_conntrack_in+0x439/0x1450 [ 25.354065] ? ip6t_error+0x60/0x60 [ 25.357664] ? nf_conntrack_find_get+0x40/0x40 [ 25.362216] ? ip6t_error+0x60/0x60 [ 25.365819] ip6table_nat_do_chain+0x65/0x80 [ 25.370198] nf_nat_ipv6_fn+0x594/0xa80 [ 25.374146] ? ip6table_nat_fn+0x40/0x40 [ 25.378184] ? nf_nat_ipv6_secure_port+0x30/0x30 [ 25.382915] ? ip6table_mangle_hook+0x117/0x920 [ 25.387559] ? ip6table_mangle_net_exit+0xa0/0xa0 [ 25.392375] ? ip6table_nat_fn+0x40/0x40 [ 25.396407] nf_nat_ipv6_local_fn+0x33/0x5d0 [ 25.400787] ip6table_nat_local_fn+0x2c/0x40 [ 25.405168] nf_hook_slow+0xba/0x1a0 [ 25.408857] ip6_xmit+0x10ec/0x2260 [ 25.412462] ? ip6_finish_output2+0x23a0/0x23a0 [ 25.417102] ? fl6_update_dst+0x127/0x2b0 [ 25.421224] ? inet6_csk_route_socket+0x691/0xe80 [ 25.426041] ? check_noncircular+0x20/0x20 [ 25.430247] ? lock_acquire+0x1d5/0x580 [ 25.434188] ? lock_acquire+0x1d5/0x580 [ 25.438143] ? inet6_csk_xmit+0x114/0x580 [ 25.442276] ? ip6_forward_finish+0x140/0x140 [ 25.446751] ? lock_release+0xa40/0xa40 [ 25.450709] inet6_csk_xmit+0x2fc/0x580 [ 25.454658] ? inet6_csk_update_pmtu+0x160/0x160 [ 25.459384] ? skb_checksum+0xd1/0x130 [ 25.463241] ? __skb_checksum+0x7e0/0x7e0 [ 25.467357] ? skb_send_sock+0x50/0x50 [ 25.471221] ? dccp_v6_send_check+0x278/0x3e0 [ 25.475693] dccp_transmit_skb+0x9ac/0x10f0 [ 25.479992] dccp_connect+0x369/0x670 [ 25.483767] ? dccp_skb_entail+0xc0/0xc0 [ 25.487805] dccp_v6_connect+0xe17/0x1bf0 [ 25.491927] ? dccp_v6_init_sock+0x90/0x90 [ 25.496136] ? avc_denied+0x117/0x150 [ 25.499909] ? avc_has_perm+0x4fb/0x680 [ 25.503853] ? avc_has_perm+0x43e/0x680 [ 25.507797] ? avc_has_perm_noaudit+0x520/0x520 [ 25.512438] ? trace_hardirqs_on+0xd/0x10 [ 25.516557] ? check_noncircular+0x20/0x20 [ 25.520762] ? sock_has_perm+0x2a4/0x420 [ 25.524796] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 25.530143] __inet_stream_connect+0x2d4/0xf00 [ 25.534695] ? __inet_stream_connect+0x2d4/0xf00 [ 25.539424] ? lock_acquire+0x1d5/0x580 [ 25.543371] ? lock_sock_nested+0xa3/0x110 [ 25.547573] ? lock_acquire+0x1d5/0x580 [ 25.551521] ? inet_bind+0x930/0x930 [ 25.555211] ? mark_held_locks+0xaf/0x100 [ 25.559329] ? do_raw_spin_trylock+0x190/0x190 [ 25.563883] ? __local_bh_enable_ip+0x121/0x230 [ 25.568523] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.573510] ? lock_sock_nested+0x91/0x110 [ 25.577717] ? trace_hardirqs_on+0xd/0x10 [ 25.581834] ? __local_bh_enable_ip+0x121/0x230 [ 25.586476] inet_stream_connect+0x58/0xa0 [ 25.590686] SYSC_connect+0x213/0x4a0 [ 25.594456] ? SYSC_bind+0x410/0x410 [ 25.598145] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.602696] ? vmacache_find+0x5f/0x280 [ 25.606655] ? mm_fault_error+0x2c0/0x2c0 [ 25.610774] ? move_addr_to_kernel+0x60/0x60 [ 25.615161] SyS_connect+0x24/0x30 [ 25.618672] ? SyS_accept+0x30/0x30 [ 25.622269] do_syscall_64+0x282/0x940 [ 25.626140] ? __do_page_fault+0xc90/0xc90 [ 25.630345] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.635071] ? syscall_return_slowpath+0x550/0x550 [ 25.639973] ? syscall_return_slowpath+0x2ac/0x550 [ 25.644878] ? prepare_exit_to_usermode+0x350/0x350 [ 25.649871] ? retint_user+0x18/0x18 [ 25.653559] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.658375] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 25.663533] RIP: 0033:0x441c69 [ 25.666694] RSP: 002b:00007ffe50cc0be8 EFLAGS: 00000217 ORIG_RAX: 000000000000002a [ 25.674370] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000441c69 [ 25.681609] RDX: 000000000000001c RSI: 00000000208fdfe4 RDI: 0000000000000003 [ 25.688849] RBP: 00000000006cc018 R08: 0000000000000000 R09: 0000000000000000 [ 25.696094] R10: 0000000000000538 R11: 0000000000000217 R12: 0000000000403590 [ 25.703334] R13: 0000000000403620 R14: 0000000000000000 R15: 0000000000000000 [ 25.710581] Code: 48 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 46 02 00 00 48 8b 45 c8 44 0f b7 20 e8 88 97 04 fd 31 d2 41 0f b7 c4 4c 89 f9 <41> f7 f6 48 c1 e9 03 48 b8 00 00 00 00 00 fc ff df 0f b6 0c 01 [ 25.729649] RIP: nf_nat_l4proto_unique_tuple+0x291/0x530 RSP: ffff8801b2466778 [ 25.737024] ---[ end trace ac43c2e7af4625cd ]--- [ 25.741779] Kernel panic - not syncing: Fatal exception in interrupt [ 25.748686] Dumping ftrace buffer: [ 25.752200] (ftrace buffer empty) [ 25.755882] Kernel Offset: disabled [ 25.759479] Rebooting in 86400 seconds..