[....] Starting enhanced syslogd: rsyslogd[ 17.071603] audit: type=1400 audit(1519912005.446:5): avc: denied { syslog } for pid=4108 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: [ 22.883421] audit: type=1400 audit(1519912011.258:6): avc: denied { map } for pid=4247 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 '10.128.0.45' (ECDSA) to the list of known hosts. executing program [ 29.377559] audit: type=1400 audit(1519912017.752:7): avc: denied { map } for pid=4261 comm="syzkaller558310" path="/root/syzkaller558310472" 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 [ 34.783716] kasan: CONFIG_KASAN_INLINE enabled [ 34.788548] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.795961] general protection fault: 0000 [#1] SMP KASAN [ 34.801493] Dumping ftrace buffer: [ 34.805023] (ftrace buffer empty) [ 34.808707] Modules linked in: [ 34.811876] CPU: 1 PID: 4261 Comm: syzkaller558310 Not tainted 4.16.0-rc3+ #334 [ 34.819289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.828622] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.833692] RSP: 0018:ffff8801b02c7cc8 EFLAGS: 00010206 [ 34.839036] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 34.846277] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.853515] RBP: ffff8801b02c7ce0 R08: 0000000000000000 R09: 1ffff10036058f15 [ 34.860754] R10: ffff8801b02c7870 R11: 0000000000000001 R12: ffff8801b04567d2 [ 34.867994] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b02c7d58 [ 34.875238] FS: 000000000089a880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.883433] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.889289] CR2: 0000000002528220 CR3: 00000001b0e76001 CR4: 00000000001606e0 [ 34.896533] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.903776] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.911025] Call Trace: [ 34.913593] smc_shutdown+0x3ed/0x540 [ 34.917369] SyS_shutdown+0x137/0x290 [ 34.921140] ? SyS_getsockopt+0x340/0x340 [ 34.925284] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.930806] ? do_syscall_64+0xb7/0x940 [ 34.934756] ? SyS_getsockopt+0x340/0x340 [ 34.938889] do_syscall_64+0x281/0x940 [ 34.942751] ? __do_page_fault+0xc90/0xc90 [ 34.946961] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.952471] ? syscall_return_slowpath+0x550/0x550 [ 34.957376] ? syscall_return_slowpath+0x2ac/0x550 [ 34.962287] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.967640] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.972471] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.977637] RIP: 0033:0x43fce9 [ 34.980799] RSP: 002b:00007ffd7f224a58 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.988485] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 34.995729] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.002969] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.010213] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 35.017454] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 35.024706] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 35.043777] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b02c7cc8 [ 35.050405] ---[ end trace 128bd2db9ee70c8c ]--- [ 35.055146] Kernel panic - not syncing: Fatal exception [ 35.060808] Dumping ftrace buffer: [ 35.064324] (ftrace buffer empty) [ 35.068006] Kernel Offset: disabled [ 35.071609] Rebooting in 86400 seconds..