[....] Starting enhanced syslogd: rsyslogd[ 16.787196] audit: type=1400 audit(1519188088.275:5): avc: denied { syslog } for pid=4035 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 22.897788] audit: type=1400 audit(1519188094.386:6): avc: denied { map } for pid=4175 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. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 29.188341] audit: type=1400 audit(1519188100.677:7): avc: denied { map } for pid=4189 comm="syzkaller169296" path="/root/syzkaller169296248" 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 [ 29.563995] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 29.891350] xt_connbytes: Forcing CT accounting to be enabled [ 29.943156] kasan: CONFIG_KASAN_INLINE enabled [ 29.947844] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.955225] general protection fault: 0000 [#1] SMP KASAN [ 29.960742] Dumping ftrace buffer: [ 29.964252] (ftrace buffer empty) [ 29.967931] Modules linked in: [ 29.971094] CPU: 0 PID: 4189 Comm: syzkaller169296 Not tainted 4.16.0-rc2+ #235 [ 29.978509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.987845] RIP: 0010:ip6t_do_table+0x132d/0x1a30 [ 29.992680] RSP: 0018:ffff8801db407138 EFLAGS: 00010246 [ 29.998014] RAX: 0000000000000000 RBX: ffff8801b08e4fa0 RCX: ffffffff84dc2921 [ 30.005257] RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8801b08e4e8e [ 30.012496] RBP: ffff8801db407380 R08: 1ffff1003b680dce R09: 0000000000000000 [ 30.019734] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 30.026974] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801b08e4e00 [ 30.034213] FS: 000000000245a880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 30.042408] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.048258] CR2: 000000002037c000 CR3: 00000001b1e04001 CR4: 00000000001606f0 [ 30.055506] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.062745] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.069984] Call Trace: [ 30.072537] [ 30.074663] ? ip6t_error+0x60/0x60 [ 30.078265] ? mld_sendpack+0x617/0xe70 [ 30.082216] ? ip6t_error+0x60/0x60 [ 30.085813] ? ip6table_mangle_hook+0x117/0x920 [ 30.090453] ? ip6table_mangle_net_exit+0xa0/0xa0 [ 30.095266] ? find_held_lock+0x35/0x1d0 [ 30.099295] ? ip6table_nat_fn+0x40/0x40 [ 30.103329] ip6table_filter_hook+0x65/0x80 [ 30.107622] nf_hook_slow+0xba/0x1a0 [ 30.111307] nf_hook.constprop.37+0x3f6/0x830 [ 30.115772] ? igmp6_mcf_seq_next+0x660/0x660 [ 30.120236] ? trace_hardirqs_on+0xd/0x10 [ 30.124354] ? __local_bh_enable_ip+0x121/0x230 [ 30.128993] ? _raw_spin_unlock_bh+0x30/0x40 [ 30.133376] ? rt6_uncached_list_add+0x1b7/0x240 [ 30.138103] ? rt6_fill_node+0x18b0/0x18b0 [ 30.142335] ? icmp6_dst_alloc+0x475/0x660 [ 30.146544] ? ip6_mc_leave_src+0x1d0/0x1d0 [ 30.150835] ? icmpv6_flow_init+0x1f6/0x270 [ 30.155131] mld_sendpack+0x6c2/0xe70 [ 30.158907] ? nf_hook.constprop.37+0x830/0x830 [ 30.163549] ? mark_held_locks+0xaf/0x100 [ 30.167671] ? trace_hardirqs_on+0xd/0x10 [ 30.171790] ? __local_bh_enable_ip+0x121/0x230 [ 30.176430] mld_ifc_timer_expire+0x3d9/0x770 [ 30.180908] call_timer_fn+0x228/0x820 [ 30.184766] ? mld_dad_timer_expire+0x100/0x100 [ 30.189404] ? process_timeout+0x40/0x40 [ 30.193438] ? __run_timers+0x7e3/0xb70 [ 30.197384] ? lock_downgrade+0x980/0x980 [ 30.201510] ? debug_object_deactivate+0x364/0x560 [ 30.206406] ? lock_release+0xa40/0xa40 [ 30.210354] ? do_raw_spin_trylock+0x190/0x190 [ 30.214907] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 30.219892] ? mld_dad_timer_expire+0x100/0x100 [ 30.224531] ? mld_dad_timer_expire+0x100/0x100 [ 30.229168] __run_timers+0x7ee/0xb70 [ 30.232953] ? trigger_dyntick_cpu.isra.29+0x150/0x150 [ 30.238203] ? timerqueue_add+0x1e9/0x280 [ 30.242322] ? check_noncircular+0x20/0x20 [ 30.246526] ? enqueue_hrtimer+0x177/0x4b0 [ 30.250730] ? lock_release+0xa40/0xa40 [ 30.254672] ? retrigger_next_event+0x1e0/0x1e0 [ 30.259317] ? find_held_lock+0x35/0x1d0 [ 30.263355] ? clockevents_program_event+0x163/0x2e0 [ 30.268428] ? lock_downgrade+0x980/0x980 [ 30.272568] ? rcu_pm_notify+0xc0/0xc0 [ 30.276432] run_timer_softirq+0x4c/0x70 [ 30.280464] __do_softirq+0x2d7/0xb85 [ 30.284234] ? ktime_get+0x26f/0x3a0 [ 30.287921] ? __irqentry_text_end+0x1f8ad4/0x1f8ad4 [ 30.292998] ? do_timer+0x50/0x50 [ 30.296428] ? native_apic_msr_write+0x5c/0x80 [ 30.300982] ? lapic_next_event+0x54/0x80 [ 30.305099] ? clockevents_program_event+0x108/0x2e0 [ 30.310176] ? tick_program_event+0x83/0x100 [ 30.314555] ? rcu_pm_notify+0xc0/0xc0 [ 30.318416] irq_exit+0x1cc/0x200 [ 30.321839] smp_apic_timer_interrupt+0x16b/0x700 [ 30.326669] ? smp_call_function_single_interrupt+0x640/0x640 [ 30.332531] ? _raw_spin_lock+0x32/0x40 [ 30.336478] ? _raw_spin_unlock+0x22/0x30 [ 30.340595] ? handle_edge_irq+0x2b4/0x7c0 [ 30.344801] ? task_prio+0x50/0x50 [ 30.348317] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.353132] apic_timer_interrupt+0x8e/0xa0 [ 30.357421] [ 30.359632] RIP: 0010:update_stack_state+0x3ba/0x700 [ 30.364703] RSP: 0018:ffff8801b1db74a8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff12 [ 30.372378] RAX: dffffc0000000000 RBX: ffff8801b1db7c20 RCX: 1ffff100363b6e00 [ 30.379617] RDX: ffff8801b1db7728 RSI: ffff8801b1db7c30 RDI: ffff8801b1db7728 [ 30.386854] RBP: ffff8801b1db75b0 R08: ffff8801b1db7720 R09: ffff8801ae0f06c0 [ 30.394094] R10: 000000000000000b R11: ffffed00363b6ee6 R12: 1ffff100363b6e9d [ 30.401344] R13: 1ffff100363b6ea1 R14: ffffffff81b8cdcd R15: ffff8801b1db76e0 [ 30.408588] ? d_alloc_pseudo+0x1d/0x30 [ 30.412545] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 30.418397] ? d_alloc_pseudo+0x1d/0x30 [ 30.422347] ? print_irqtrace_events+0x270/0x270 [ 30.427074] ? unwind_next_frame.part.6+0x1a6/0xb40 [ 30.432062] unwind_next_frame.part.6+0x1a6/0xb40 [ 30.436874] ? unwind_dump+0x4d0/0x4d0 [ 30.440732] ? unwind_dump+0x4d0/0x4d0 [ 30.444589] ? __lock_acquire+0x664/0x3e00 [ 30.448796] ? __unwind_start+0x169/0x330 [ 30.452916] unwind_next_frame+0x3e/0x50 [ 30.456947] __save_stack_trace+0x6e/0xd0 [ 30.461082] ? __d_alloc+0xc1/0xbd0 [ 30.464690] save_stack_trace+0x1a/0x20 [ 30.468633] save_stack+0x43/0xd0 [ 30.472060] ? save_stack+0x43/0xd0 [ 30.475656] ? kasan_kmalloc+0xad/0xe0 [ 30.479511] ? kasan_slab_alloc+0x12/0x20 [ 30.483627] ? kmem_cache_alloc+0x11b/0x760 [ 30.487918] ? __d_alloc+0xc1/0xbd0 [ 30.491518] ? check_noncircular+0x20/0x20 [ 30.495720] ? __lock_is_held+0xb6/0x140 [ 30.499753] ? find_held_lock+0x35/0x1d0 [ 30.503819] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 30.509677] ? rcu_note_context_switch+0x710/0x710 [ 30.514577] ? kasan_unpoison_shadow+0x35/0x50 [ 30.519130] kasan_kmalloc+0xad/0xe0 [ 30.522820] kasan_slab_alloc+0x12/0x20 [ 30.526761] kmem_cache_alloc+0x11b/0x760 [ 30.530890] ? lock_downgrade+0x980/0x980 [ 30.535009] ? lock_release+0xa40/0xa40 [ 30.538961] __d_alloc+0xc1/0xbd0 [ 30.542385] ? shrink_dcache_for_umount+0x290/0x290 [ 30.547376] ? _raw_spin_unlock+0x22/0x30 [ 30.551495] ? __alloc_fd+0x29b/0x750 [ 30.555272] ? exit_files+0xb0/0xb0 [ 30.558874] ? __lock_is_held+0xb6/0x140 [ 30.562913] d_alloc_pseudo+0x1d/0x30 [ 30.566686] sock_alloc_file+0x157/0x560 [ 30.570717] ? sock_release+0x1e0/0x1e0 [ 30.574665] ? get_unused_fd_flags+0x121/0x190 [ 30.579221] ? ___sys_recvmsg+0x640/0x640 [ 30.583344] ? __alloc_fd+0x750/0x750 [ 30.587118] ? rw_verify_area+0xe5/0x2b0 [ 30.591154] sock_map_fd+0x34/0x90 [ 30.594667] SyS_socket+0x125/0x1d0 [ 30.598268] ? move_addr_to_kernel+0x60/0x60 [ 30.602650] ? do_syscall_64+0xb6/0x940 [ 30.606598] ? move_addr_to_kernel+0x60/0x60 [ 30.610980] do_syscall_64+0x280/0x940 [ 30.614840] ? __do_page_fault+0xc90/0xc90 [ 30.619048] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.623776] ? syscall_return_slowpath+0x550/0x550 [ 30.628675] ? syscall_return_slowpath+0x2ac/0x550 [ 30.633578] ? prepare_exit_to_usermode+0x350/0x350 [ 30.638573] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.643909] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.648727] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.653884] RIP: 0033:0x4462c9 [ 30.657047] RSP: 002b:00007ffd49876ac8 EFLAGS: 00000207 ORIG_RAX: 0000000000000029 [ 30.664724] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004462c9 [ 30.671964] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000000000000000a [ 30.679204] RBP: 00007ffd49876bf8 R08: 0000000000000000 R09: 0000000000000000 [ 30.686447] R10: 0000000000000000 R11: 0000000000000207 R12: 00007ffd49876bf8 [ 30.693687] R13: 0000000000403790 R14: 0000000000000000 R15: 0000000000000000 [ 30.700934] Code: 41 f6 87 83 00 00 00 04 75 37 e8 af e2 94 fc 8b 85 14 fe ff ff 48 8b b5 50 fe ff ff 4c 8d 2c c6 44 8d 60 01 4c 89 e8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 26 03 00 00 4d 89 7d 00 44 89 a5 14 fe ff [ 30.720031] RIP: ip6t_do_table+0x132d/0x1a30 RSP: ffff8801db407138 [ 30.726363] ---[ end trace e4380e98aa23032b ]--- [ 30.727117] kasan: CONFIG_KASAN_INLINE enabled [ 30.731114] Kernel panic - not syncing: Fatal exception in interrupt [ 30.735679] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.742603] Dumping ftrace buffer: [ 30.742607] (ftrace buffer empty) [ 30.742609] Kernel Offset: disabled [ 30.760711] Rebooting in 86400 seconds..