[?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. [ 19.105662] audit: type=1400 audit(1517943961.757:6): avc: denied { map } for pid=4166 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 37.773283] audit: type=1400 audit(1517943980.425:7): avc: denied { map } for pid=4183 comm="syzkaller350228" path="/root/syzkaller350228397" 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 [ 38.031595] 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 executing program [ 38.345772] kasan: CONFIG_KASAN_INLINE enabled [ 38.350451] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.357826] general protection fault: 0000 [#1] SMP KASAN [ 38.363335] Dumping ftrace buffer: [ 38.366842] (ftrace buffer empty) [ 38.370530] Modules linked in: [ 38.373696] CPU: 0 PID: 4183 Comm: syzkaller350228 Not tainted 4.15.0+ #299 [ 38.380772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.390108] RIP: 0010:ip6t_do_table+0x132d/0x1a30 [ 38.394919] RSP: 0018:ffff8801b0e5e6c8 EFLAGS: 00010246 [ 38.400257] RAX: 0000000000000000 RBX: ffff8801db3cc980 RCX: ffffffff84db92e1 [ 38.407496] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801db3ccade [ 38.414735] RBP: ffff8801b0e5e910 R08: 1ffff100361cbca2 R09: 0000000000000000 [ 38.421980] R10: 00000000000000d0 R11: 0000000000000000 R12: 0000000000000001 [ 38.429222] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801db3cca50 [ 38.436466] FS: 0000000000d14880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 38.444659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.450516] CR2: 0000000020000000 CR3: 00000001b0d49002 CR4: 00000000001606f0 [ 38.457757] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.464997] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.472240] Call Trace: [ 38.474799] ? ip6t_error+0x60/0x60 [ 38.478396] ? print_irqtrace_events+0x270/0x270 [ 38.483123] ? print_irqtrace_events+0x270/0x270 [ 38.487863] ? lock_release+0xa40/0xa40 [ 38.491811] ? ip6t_error+0x60/0x60 [ 38.495409] ? ip6table_mangle_hook+0x117/0x920 [ 38.500049] ? check_noncircular+0x20/0x20 [ 38.504255] ? lock_acquire+0x1d5/0x580 [ 38.508197] ? ip6table_mangle_net_exit+0xa0/0xa0 [ 38.513016] ? lock_release+0xa40/0xa40 [ 38.516965] ip6table_security_hook+0x65/0x80 [ 38.521433] nf_hook_slow+0xba/0x1a0 [ 38.525121] ip6_input+0x35c/0x560 [ 38.528632] ? ip6_input_finish+0x17a0/0x17a0 [ 38.533110] ? ipv6_chk_mcast_addr+0x2f2/0x810 [ 38.537662] ? ip6table_nat_fn+0x40/0x40 [ 38.541694] ? ip6_make_skb+0x5e0/0x5e0 [ 38.545639] ip6_mc_input+0x3a8/0xb10 [ 38.549409] ? ipv6_rcv+0x1fa0/0x1fa0 [ 38.553185] ip6_rcv_finish+0x297/0x8c0 [ 38.557132] ? ip6_input+0x560/0x560 [ 38.560817] ? ip6table_nat_in+0x2c/0x40 [ 38.564847] ? nf_hook_slow+0xd3/0x1a0 [ 38.568705] ipv6_rcv+0xf37/0x1fa0 [ 38.572220] ? ip6_rcv_finish+0x8c0/0x8c0 [ 38.576341] ? __lock_acquire+0x664/0x3e00 [ 38.580552] ? ip6_input+0x560/0x560 [ 38.584245] ? ip6_rcv_finish+0x8c0/0x8c0 [ 38.588370] __netif_receive_skb_core+0x1a41/0x3460 [ 38.593356] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.598519] ? nf_ingress+0x9f0/0x9f0 [ 38.602298] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.607463] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.612633] ? __free_insn_slot+0x5c0/0x5c0 [ 38.616926] ? print_irqtrace_events+0x270/0x270 [ 38.621650] ? check_noncircular+0x20/0x20 [ 38.625854] ? check_noncircular+0x20/0x20 [ 38.630061] ? check_noncircular+0x20/0x20 [ 38.634266] ? kernel_text_address+0x102/0x140 [ 38.638819] ? find_held_lock+0x35/0x1d0 [ 38.642856] ? print_irqtrace_events+0x270/0x270 [ 38.647585] ? lock_downgrade+0x980/0x980 [ 38.651709] ? pvclock_read_flags+0x160/0x160 [ 38.656176] ? mark_held_locks+0xaf/0x100 [ 38.660294] ? lock_acquire+0x1d5/0x580 [ 38.664238] ? lock_acquire+0x1d5/0x580 [ 38.668180] ? netif_receive_skb_internal+0xa2/0x670 [ 38.673253] ? ktime_get_with_offset+0x2c1/0x420 [ 38.677980] ? lock_release+0xa40/0xa40 [ 38.681924] ? do_gettimeofday+0x190/0x190 [ 38.686129] ? lock_release+0xa40/0xa40 [ 38.690077] __netif_receive_skb+0x2c/0x1b0 [ 38.694365] ? __netif_receive_skb+0x2c/0x1b0 [ 38.698838] netif_receive_skb_internal+0x10b/0x670 [ 38.703825] ? dev_cpu_dead+0xb00/0xb00 [ 38.707768] ? net_rx_action+0x1910/0x1910 [ 38.711972] ? eth_type_trans+0x2b2/0x710 [ 38.716091] ? eth_gro_receive+0x820/0x820 [ 38.720308] napi_gro_frags+0x58a/0xaf0 [ 38.724252] ? napi_gro_receive+0x500/0x500 [ 38.728556] ? tun_get_user+0x2737/0x3940 [ 38.732682] tun_get_user+0x2760/0x3940 [ 38.736628] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.741801] ? tun_build_skb.isra.50+0x1810/0x1810 [ 38.746699] ? __pagevec_lru_add+0x30/0x30 [ 38.750915] ? find_held_lock+0x35/0x1d0 [ 38.754950] ? tun_get+0x1ab/0x2e0 [ 38.758462] ? lock_release+0xa40/0xa40 [ 38.762408] ? __lock_is_held+0xb6/0x140 [ 38.766444] ? tun_get+0x1d4/0x2e0 [ 38.769954] ? tun_do_read+0x26c0/0x26c0 [ 38.773992] ? __check_object_size+0x8b/0x530 [ 38.778459] ? rcu_note_context_switch+0x710/0x710 [ 38.783363] tun_chr_write_iter+0xb9/0x160 [ 38.787569] do_iter_readv_writev+0x55c/0x830 [ 38.792046] ? vfs_dedupe_file_range+0x8f0/0x8f0 [ 38.796778] ? rw_verify_area+0xe5/0x2b0 [ 38.800813] do_iter_write+0x154/0x540 [ 38.804671] ? dup_iter+0x260/0x260 [ 38.808273] vfs_writev+0x18a/0x340 [ 38.811870] ? vfs_iter_write+0xb0/0xb0 [ 38.815827] ? __fdget_pos+0x130/0x190 [ 38.819685] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 38.824237] ? __fdget_raw+0x20/0x20 [ 38.827927] do_writev+0xfc/0x2a0 [ 38.831348] ? do_writev+0xfc/0x2a0 [ 38.834948] ? vfs_writev+0x340/0x340 [ 38.838719] ? mm_fault_error+0x2c0/0x2c0 [ 38.842834] ? SyS_read+0x220/0x220 [ 38.846431] SyS_writev+0x27/0x30 [ 38.849852] ? SyS_readv+0x30/0x30 [ 38.853374] do_syscall_64+0x282/0x940 [ 38.857232] ? __do_page_fault+0xc90/0xc90 [ 38.861446] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 38.866954] ? syscall_return_slowpath+0x550/0x550 [ 38.871854] ? syscall_return_slowpath+0x2ac/0x550 [ 38.876757] ? retint_user+0x18/0x18 [ 38.880441] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.885256] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 38.890415] RIP: 0033:0x4462b0 [ 38.893574] RSP: 002b:00007ffc5d4de908 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 38.901251] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004462b0 [ 38.908490] RDX: 0000000000000001 RSI: 00007ffc5d4de910 RDI: 0000000000000003 [ 38.915728] RBP: 0100000000000000 R08: 00000000ffffffff R09: 0000000000000000 [ 38.922968] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 38.930209] R13: 0000000000403840 R14: 0000000000000000 R15: 0000000000000000 [ 38.937457] Code: 41 f6 87 83 00 00 00 04 75 37 e8 cf 13 95 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 [ 38.956527] RIP: ip6t_do_table+0x132d/0x1a30 RSP: ffff8801b0e5e6c8 [ 38.962859] ---[ end trace c05d16ec47551904 ]--- [ 38.967596] Kernel panic - not syncing: Fatal exception in interrupt [ 38.974446] Dumping ftrace buffer: [ 38.977954] (ftrace buffer empty) [ 38.981633] Kernel Offset: disabled [ 38.985227] Rebooting in 86400 seconds..