[....] Starting enhanced syslogd: rsyslogd[ 14.835717] audit: type=1400 audit(1518369543.780:5): avc: denied { syslog } for pid=3943 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: [ 18.107293] audit: type=1400 audit(1518369547.052:6): avc: denied { map } for pid=4082 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 '10.128.0.42' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 30.232484] audit: type=1400 audit(1518369559.177:7): avc: denied { map } for pid=4098 comm="syzkaller815563" path="/root/syzkaller815563920" 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 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 30.481707] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 30.792779] kasan: CONFIG_KASAN_INLINE enabled [ 30.797422] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.804786] general protection fault: 0000 [#1] SMP KASAN [ 30.810295] Dumping ftrace buffer: [ 30.813802] (ftrace buffer empty) [ 30.817479] Modules linked in: [ 30.820643] CPU: 1 PID: 4096 Comm: sshd Not tainted 4.15.0+ #308 [ 30.826752] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.836081] RIP: 0010:ipt_do_table+0x12ee/0x1950 [ 30.840803] RSP: 0018:ffff8801db506360 EFLAGS: 00010246 [ 30.846135] RAX: 0000000000000000 RBX: ffff8801b7867880 RCX: ffffffff84b7613d [ 30.853379] RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8801b786775a [ 30.860618] RBP: ffff8801db506568 R08: ffff8801db506660 R09: 0000000000000000 [ 30.867855] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.875093] R13: dffffc0000000000 R14: ffff8801b7867700 R15: ffff8801db5064e0 [ 30.882332] FS: 00007fb81ff2a7c0(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 30.890531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.896380] CR2: 00007f2e25a99518 CR3: 00000001be9ca002 CR4: 00000000001606e0 [ 30.903622] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.910864] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.918100] Call Trace: [ 30.920651] [ 30.922777] ? __free_insn_slot+0x5c0/0x5c0 [ 30.927079] ? do_add_counters+0x550/0x550 [ 30.931283] ? check_noncircular+0x20/0x20 [ 30.935488] ? lock_acquire+0x1d5/0x580 [ 30.939435] ? ip_local_deliver+0x212/0x6e0 [ 30.943729] ? iptable_mangle_hook+0xaf/0x4a0 [ 30.948203] iptable_filter_hook+0x65/0x80 [ 30.952406] nf_hook_slow+0xba/0x1a0 [ 30.956098] ip_local_deliver+0x445/0x6e0 [ 30.960216] ? ip_call_ra_chain+0x6d0/0x6d0 [ 30.964505] ? ip_route_input_noref+0x13c/0x1e0 [ 30.969141] ? ip_route_input_rcu+0x3200/0x3200 [ 30.973778] ? ip_rcv_finish+0x2040/0x2040 [ 30.977983] ip_rcv_finish+0xa36/0x2040 [ 30.981928] ? tcp_v4_send_synack+0x430/0x430 [ 30.986398] ? inet_del_offload+0x40/0x40 [ 30.990518] ? ip_rcv+0xf22/0x1840 [ 30.994029] ? lock_downgrade+0x980/0x980 [ 30.998144] ? tcp_v4_send_synack+0x430/0x430 [ 31.002612] ? nf_nat_ipv4_in+0x1cd/0x270 [ 31.006728] ? iptable_nat_ipv4_fn+0x40/0x40 [ 31.011112] ? nf_hook_slow+0xd3/0x1a0 [ 31.014971] ip_rcv+0xc5a/0x1840 [ 31.018312] ? ip_local_deliver+0x6e0/0x6e0 [ 31.022610] ? packet_rcv_spkt+0x11c/0x660 [ 31.026817] ? inet_del_offload+0x40/0x40 [ 31.030933] ? ip_local_deliver+0x6e0/0x6e0 [ 31.035226] __netif_receive_skb_core+0x1a41/0x3460 [ 31.040216] ? nf_ingress+0x9f0/0x9f0 [ 31.043994] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.049156] ? virtnet_set_rx_mode+0x9f0/0x9f0 [ 31.053707] ? update_load_avg+0xe53/0x2d80 [ 31.057998] ? check_noncircular+0x20/0x20 [ 31.062202] ? check_noncircular+0x20/0x20 [ 31.066404] ? __lock_is_held+0xb6/0x140 [ 31.070436] ? check_noncircular+0x20/0x20 [ 31.074643] ? find_held_lock+0x35/0x1d0 [ 31.078675] ? lock_downgrade+0x980/0x980 [ 31.082800] ? pvclock_read_flags+0x160/0x160 [ 31.087269] ? lock_acquire+0x1d5/0x580 [ 31.091213] ? lock_acquire+0x1d5/0x580 [ 31.095155] ? netif_receive_skb_internal+0xa2/0x670 [ 31.100229] ? ktime_get_with_offset+0x2c1/0x420 [ 31.104954] ? lock_release+0xa40/0xa40 [ 31.108896] ? do_gettimeofday+0x190/0x190 [ 31.113098] ? __lock_is_held+0xb6/0x140 [ 31.117129] __netif_receive_skb+0x2c/0x1b0 [ 31.121419] ? __netif_receive_skb+0x2c/0x1b0 [ 31.125884] netif_receive_skb_internal+0x10b/0x670 [ 31.130866] ? __lock_acquire+0x664/0x3e00 [ 31.135067] ? dev_cpu_dead+0xb00/0xb00 [ 31.139009] ? net_rx_action+0x1910/0x1910 [ 31.143210] ? task_prio+0x50/0x50 [ 31.146721] ? rcu_pm_notify+0xc0/0xc0 [ 31.150579] ? skb_gro_reset_offset+0x17b/0x300 [ 31.155217] napi_gro_receive+0x3d0/0x500 [ 31.159335] ? print_irqtrace_events+0x270/0x270 [ 31.164058] ? dev_gro_receive+0x2110/0x2110 [ 31.168436] ? eth_type_trans+0x2b2/0x710 [ 31.172551] ? eth_gro_receive+0x820/0x820 [ 31.176757] ? __rb_erase_color+0x27b0/0x27b0 [ 31.181225] receive_buf+0xb6e/0x2530 [ 31.184998] ? __lock_acquire+0x664/0x3e00 [ 31.189202] ? receive_mergeable+0x2a30/0x2a30 [ 31.193758] ? check_noncircular+0x20/0x20 [ 31.197961] ? check_noncircular+0x20/0x20 [ 31.202164] ? lock_release+0xa40/0xa40 [ 31.206110] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.211269] ? print_irqtrace_events+0x270/0x270 [ 31.215993] ? print_irqtrace_events+0x270/0x270 [ 31.220721] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.225881] ? print_irqtrace_events+0x270/0x270 [ 31.230604] ? print_irqtrace_events+0x270/0x270 [ 31.235337] ? print_irqtrace_events+0x270/0x270 [ 31.240063] ? get_stack_info+0x37/0x160 [ 31.244095] ? update_stack_state+0x225/0x700 [ 31.248562] ? __lock_acquire+0x664/0x3e00 [ 31.252772] ? __lock_acquire+0x664/0x3e00 [ 31.256987] ? vring_use_dma_api+0x7f/0xa0 [ 31.261192] ? vring_unmap_one+0x49/0x3d0 [ 31.265313] ? detach_buf+0x463/0x6a0 [ 31.269093] ? virtqueue_get_buf_ctx+0x3b1/0x8b0 [ 31.273829] ? detach_buf+0x6a0/0x6a0 [ 31.277599] ? rb_first_postorder+0xa0/0xa0 [ 31.281888] ? print_irqtrace_events+0x270/0x270 [ 31.286617] virtnet_poll+0x320/0xb70 [ 31.290386] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.295547] ? receive_buf+0x2530/0x2530 [ 31.299592] ? check_noncircular+0x20/0x20 [ 31.303795] ? check_noncircular+0x20/0x20 [ 31.307998] ? __lock_acquire+0x664/0x3e00 [ 31.312202] ? net_rx_action+0x49b/0x1910 [ 31.316325] net_rx_action+0x792/0x1910 [ 31.320275] ? napi_complete_done+0x6c0/0x6c0 [ 31.324739] ? print_irqtrace_events+0x270/0x270 [ 31.329462] ? print_irqtrace_events+0x270/0x270 [ 31.334185] ? trace_hardirqs_off+0xd/0x10 [ 31.338389] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 31.343463] ? find_held_lock+0x35/0x1d0 [ 31.347495] ? __lock_acquire+0x664/0x3e00 [ 31.351700] ? rcu_pm_notify+0xc0/0xc0 [ 31.355562] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.360722] ? __raise_softirq_irqoff+0x21c/0x2c0 [ 31.365533] ? raise_softirq+0x490/0x490 [ 31.369566] ? trace_hardirqs_off+0xd/0x10 [ 31.373768] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 31.378840] ? hrtimer_start_range_ns+0x57e/0xb80 [ 31.383652] ? rcu_pm_notify+0xc0/0xc0 [ 31.387507] ? trace_hardirqs_off+0xd/0x10 [ 31.391711] ? __napi_schedule+0x25e/0x370 [ 31.395915] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.400906] ? nohz_balance_enter_idle+0x1cc/0x310 [ 31.405804] ? rcu_pm_notify+0xc0/0xc0 [ 31.409664] ? rcu_read_lock_sched_held+0x108/0x120 [ 31.414650] ? check_noncircular+0x20/0x20 [ 31.418854] ? rcu_pm_notify+0xc0/0xc0 [ 31.422715] __do_softirq+0x2d7/0xb85 [ 31.426488] ? handle_edge_irq+0x2b4/0x7c0 [ 31.430695] ? __irqentry_text_end+0x1f8ee4/0x1f8ee4 [ 31.435765] ? handle_irq_event_percpu+0x141/0x1b0 [ 31.440659] ? do_raw_spin_trylock+0x190/0x190 [ 31.445209] ? __handle_irq_event_percpu+0x9d0/0x9d0 [ 31.450279] ? do_raw_spin_trylock+0x190/0x190 [ 31.454832] ? _raw_spin_lock+0x32/0x40 [ 31.458776] ? _raw_spin_unlock+0x22/0x30 [ 31.462891] ? handle_edge_irq+0x2b4/0x7c0 [ 31.467101] irq_exit+0x1cc/0x200 [ 31.470523] do_IRQ+0xeb/0x190 [ 31.473688] common_interrupt+0xa9/0xa9 [ 31.477627] [ 31.479832] RIP: 0010:ktime_get_ts64+0x18f/0x4d0 [ 31.484554] RSP: 0018:ffff8801bde3fad0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffffd5 [ 31.492229] RAX: ffff8801c2d6a100 RBX: dffffc0000000000 RCX: ffffffff8161c57a [ 31.499476] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000293 [ 31.506713] RBP: ffff8801bde3fbd0 R08: 0000000000000000 R09: 0000000000000000 [ 31.513949] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10037bc7f61 [ 31.521188] R13: ffff8801bde3fc20 R14: ffff8801bde3fba8 R15: 0000000000000293 [ 31.528437] ? ktime_get_ts64+0x18a/0x4d0 [ 31.532573] ? get_monotonic_coarse64+0x470/0x470 [ 31.537385] ? kvm_clock_get_cycles+0x25/0x30 [ 31.541860] poll_select_copy_remaining+0x152/0x620 [ 31.546847] ? poll_schedule_timeout+0x1f0/0x1f0 [ 31.551573] ? poll_select_set_timeout+0x12f/0x210 [ 31.556471] ? do_restart_poll+0x2a0/0x2a0 [ 31.560680] ? kasan_check_write+0x14/0x20 [ 31.564883] SyS_select+0x1a6/0x230 [ 31.568480] ? core_sys_select+0x960/0x960 [ 31.572680] ? SyS_write+0x184/0x220 [ 31.576363] ? SyS_read+0x220/0x220 [ 31.579961] ? do_syscall_64+0xb7/0x940 [ 31.583904] ? core_sys_select+0x960/0x960 [ 31.588106] do_syscall_64+0x282/0x940 [ 31.591980] ? __do_page_fault+0xc90/0xc90 [ 31.596185] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.601693] ? syscall_return_slowpath+0x550/0x550 [ 31.606589] ? syscall_return_slowpath+0x2ac/0x550 [ 31.611489] ? entry_SYSCALL_64_after_hwframe+0x36/0x9b [ 31.616823] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.621639] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 31.626796] RIP: 0033:0x7fb81e2cadd3 [ 31.630476] RSP: 002b:00007ffd48283ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 [ 31.638150] RAX: ffffffffffffffda RBX: 00007ffd48283b50 RCX: 00007fb81e2cadd3 [ 31.645387] RDX: 000055fe83998af0 RSI: 000055fe83998b10 RDI: 000000000000000c [ 31.652625] RBP: 000055fe836798dc R08: 00007ffd48283af0 R09: 0101010101010101 [ 31.659862] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd48283b58 [ 31.667099] R13: 0000000000000000 R14: 00007ffd48283b48 R15: 00007ffd48283b4c [ 31.674345] Code: 46 52 02 75 41 e8 13 9c b9 fc 8b 85 80 fe ff ff 8d 70 01 89 b5 00 ff ff ff 48 8b b5 88 fe ff ff 4c 8d 24 c6 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 0f 85 e8 01 00 00 8b 85 00 ff ff ff 4d 89 34 24 [ 31.694237] RIP: ipt_do_table+0x12ee/0x1950 RSP: ffff8801db506360 [ 31.700479] ---[ end trace 199fd19967f09597 ]--- [ 31.705215] Kernel panic - not syncing: Fatal exception in interrupt [ 31.712047] Dumping ftrace buffer: [ 31.715557] (ftrace buffer empty) [ 31.719238] Kernel Offset: disabled [ 31.722840] Rebooting in 86400 seconds..