[....] Starting enhanced syslogd: rsyslogd[ 16.732784] audit: type=1400 audit(1520261901.490:5): avc: denied { syslog } for pid=4094 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: [ 22.093736] audit: type=1400 audit(1520261906.851:6): avc: denied { map } for pid=4235 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 '10.128.0.11' (ECDSA) to the list of known hosts. [ 28.378411] audit: type=1400 audit(1520261913.136:7): avc: denied { map } for pid=4249 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/05 14:58:33 parsed 1 programs 2018/03/05 14:58:33 executed programs: 0 [ 28.622149] audit: type=1400 audit(1520261913.379:8): avc: denied { map } for pid=4249 comm="syz-execprog" path="/root/syzkaller-shm588294758" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 28.635512] IPVS: ftp: loaded support on port[0] = 21 [ 28.683208] kasan: CONFIG_KASAN_INLINE enabled [ 28.687884] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.695262] general protection fault: 0000 [#1] SMP KASAN [ 28.700782] Dumping ftrace buffer: [ 28.704293] (ftrace buffer empty) [ 28.707972] Modules linked in: [ 28.711146] CPU: 0 PID: 4257 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #251 [ 28.718389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.727729] RIP: 0010:lowpan_device_event+0xca/0x130 [ 28.732801] RSP: 0018:ffff8801b07defc0 EFLAGS: 00010206 [ 28.738132] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85aed770 [ 28.745371] RDX: 0000000000000006 RSI: 0000000000000006 RDI: 0000000000000030 [ 28.752617] RBP: ffff8801b07defd8 R08: 0000000000000000 R09: 1ffff100360fbdc6 [ 28.759856] R10: ffff8801b07defe8 R11: 0000000000000001 R12: 0000000000000006 [ 28.767094] R13: 0000000000000000 R14: ffffffff876990e0 R15: ffffffff87687b60 [ 28.774340] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.782533] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 28.788384] CR2: 0000000008138024 CR3: 0000000006e22001 CR4: 00000000001606f0 [ 28.795624] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.802863] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.810101] Call Trace: [ 28.812664] notifier_call_chain+0x136/0x2c0 [ 28.817047] ? raw_notifier_chain_unregister+0x1b0/0x1b0 [ 28.822466] ? generic_xdp_install+0x4d0/0x4d0 [ 28.827030] ? dev_init_scheduler+0x530/0x530 [ 28.831497] ? rtnl_is_locked+0x54/0xb0 [ 28.835439] ? rtnl_kfree_skbs+0x70/0x70 [ 28.839478] raw_notifier_call_chain+0x2d/0x40 [ 28.844039] call_netdevice_notifiers_info+0x32/0x70 [ 28.849112] rollback_registered_many+0x8b5/0xe20 [ 28.853927] ? dev_xdp_uninstall+0x310/0x310 [ 28.858306] ? mark_held_locks+0xaf/0x100 [ 28.862425] ? trace_hardirqs_off+0x10/0x10 [ 28.866716] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.871443] ? print_irqtrace_events+0x270/0x270 [ 28.876170] ? print_irqtrace_events+0x270/0x270 [ 28.880895] ? print_irqtrace_events+0x270/0x270 [ 28.885623] rollback_registered+0x1be/0x3c0 [ 28.890005] ? rollback_registered_many+0xe20/0xe20 [ 28.894997] ? __queue_delayed_work+0x226/0x340 [ 28.899641] ? mark_held_locks+0xaf/0x100 [ 28.903761] ? queue_delayed_work_on+0xc9/0x1d0 [ 28.908399] ? rtnl_is_locked+0x54/0xb0 [ 28.912346] ? trace_hardirqs_on+0xd/0x10 [ 28.916470] ? queue_delayed_work_on+0x10d/0x1d0 [ 28.921200] unregister_netdevice_queue+0x2e3/0x5f0 [ 28.926194] ? rollback_registered+0x3c0/0x3c0 [ 28.930746] ? linkwatch_schedule_work+0x130/0x130 [ 28.935651] ? tun_ptr_free+0x3d0/0x3d0 [ 28.939597] ? mark_held_locks+0xaf/0x100 [ 28.943714] ? __lock_is_held+0xb6/0x140 [ 28.947746] ? __local_bh_enable_ip+0x121/0x230 [ 28.952390] ? __tun_detach+0xa4c/0x10b0 [ 28.956422] ? trace_hardirqs_on+0xd/0x10 [ 28.960543] __tun_detach+0x520/0x10b0 [ 28.964404] ? tun_cleanup_tx_ring.part.46+0x550/0x550 [ 28.969652] ? trace_hardirqs_off+0x10/0x10 [ 28.973950] ? locks_remove_file+0x3fa/0x5a0 [ 28.978329] ? fcntl_setlk+0x1100/0x1100 [ 28.982363] ? fsnotify+0x7b3/0x1140 [ 28.986055] ? __tun_detach+0x10b0/0x10b0 [ 28.990175] ? __tun_detach+0x10b0/0x10b0 [ 28.994295] tun_chr_close+0x44/0x60 [ 28.997980] __fput+0x327/0x7e0 [ 29.001236] ? fput+0x140/0x140 [ 29.004488] ? _raw_spin_unlock_irq+0x27/0x70 [ 29.008959] ____fput+0x15/0x20 [ 29.012219] task_work_run+0x199/0x270 [ 29.016087] ? task_work_cancel+0x210/0x210 [ 29.020379] ? _raw_spin_unlock+0x22/0x30 [ 29.024496] ? switch_task_namespaces+0x87/0xc0 [ 29.029139] do_exit+0x9bb/0x1ad0 [ 29.032564] ? lock_downgrade+0x980/0x980 [ 29.036684] ? mm_update_next_owner+0x930/0x930 [ 29.041327] ? __lock_is_held+0xb6/0x140 [ 29.045369] ? tun_get+0x1d4/0x2e0 [ 29.048883] ? tun_do_read+0x26c0/0x26c0 [ 29.052918] ? rtnl_unlock+0xe/0x10 [ 29.056525] ? __tun_chr_ioctl+0x525/0x40d0 [ 29.060822] ? tun_poll_controller+0x4c0/0x4c0 [ 29.065374] ? check_same_owner+0x320/0x320 [ 29.069666] ? handle_mm_fault+0x35b/0xb10 [ 29.073873] ? __might_sleep+0x95/0x190 [ 29.077823] ? _cond_resched+0x14/0x30 [ 29.081684] ? selinux_file_ioctl+0x444/0x690 [ 29.086150] ? __fget_light+0x2b2/0x3c0 [ 29.090095] ? selinux_capable+0x40/0x40 [ 29.094130] ? finish_task_switch+0x4dd/0x7e0 [ 29.098599] ? compat_SyS_futex+0x288/0x380 [ 29.102896] do_group_exit+0x149/0x400 [ 29.106758] ? compat_SyS_get_robust_list+0x300/0x300 [ 29.111926] ? SyS_exit+0x30/0x30 [ 29.115355] ? compat_SyS_ioctl+0x77/0x2a30 [ 29.119650] ? do_fast_syscall_32+0x156/0xf9f [ 29.124118] ? do_group_exit+0x400/0x400 [ 29.128149] SyS_exit_group+0x1d/0x20 [ 29.131920] do_fast_syscall_32+0x3ec/0xf9f [ 29.136220] ? do_int80_syscall_32+0x9c0/0x9c0 [ 29.140774] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.145507] ? syscall_return_slowpath+0x2ac/0x550 [ 29.150406] ? prepare_exit_to_usermode+0x350/0x350 [ 29.155393] ? sysret32_from_system_call+0x5/0x3c [ 29.160209] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.165035] entry_SYSENTER_compat+0x70/0x7f [ 29.169412] RIP: 0023:0xf7fa1c99 [ 29.172745] RSP: 002b:00000000ff8a965c EFLAGS: 00000286 ORIG_RAX: 00000000000000fc [ 29.180424] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000 [ 29.187665] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 29.194904] RBP: 00000000080a2c25 R08: 0000000000000000 R09: 0000000000000000 [ 29.202142] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 29.209379] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.216623] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 59 48 8b 9b 50 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 30 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 3e 48 8b 5b 30 41 bd 01 00 00 00 48 85 db 74 92 [ 29.235691] RIP: lowpan_device_event+0xca/0x130 RSP: ffff8801b07defc0 [ 29.242323] ---[ end trace 6d0acffe7b652a0b ]--- [ 29.247084] Kernel panic - not syncing: Fatal exception [ 29.252870] Dumping ftrace buffer: [ 29.256384] (ftrace buffer empty) [ 29.260064] Kernel Offset: disabled [ 29.263660] Rebooting in 86400 seconds..