[....] Starting enhanced syslogd: rsyslogd[ 17.107881] audit: type=1400 audit(1521632138.196:5): avc: denied { syslog } for pid=4085 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: [ 22.088171] audit: type=1400 audit(1521632143.176:6): avc: denied { map } for pid=4225 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 '10.128.0.37' (ECDSA) to the list of known hosts. executing program [ 28.440759] audit: type=1400 audit(1521632149.529:7): avc: denied { map } for pid=4239 comm="syzkaller794271" path="/root/syzkaller794271516" 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 [ 33.759748] kasan: CONFIG_KASAN_INLINE enabled [ 33.764600] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.772040] general protection fault: 0000 [#1] SMP KASAN [ 33.777560] Dumping ftrace buffer: [ 33.781069] (ftrace buffer empty) [ 33.784748] Modules linked in: [ 33.787914] CPU: 0 PID: 4239 Comm: syzkaller794271 Not tainted 4.16.0-rc6+ #271 [ 33.795329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.804667] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.809736] RSP: 0018:ffff8801b013fc78 EFLAGS: 00010206 [ 33.815069] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 33.822320] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829647] RBP: ffff8801b013fc90 R08: 0000000000000000 R09: 1ffff10036027f0b [ 33.836886] R10: ffff8801b013f820 R11: 0000000000000001 R12: ffff8801b1d037d2 [ 33.844126] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b013fd08 [ 33.851370] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008263840 [ 33.859564] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.865425] CR2: ffffffffff600400 CR3: 00000001b1208004 CR4: 00000000001606f0 [ 33.872665] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.879907] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.887145] Call Trace: [ 33.889706] smc_shutdown+0x3ed/0x540 [ 33.893480] SyS_shutdown+0x137/0x290 [ 33.897251] ? SyS_getsockopt+0x340/0x340 [ 33.901373] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.906884] ? do_fast_syscall_32+0x156/0xf9f [ 33.911353] ? SyS_getsockopt+0x340/0x340 [ 33.915472] do_fast_syscall_32+0x3ec/0xf9f [ 33.919766] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.924322] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.929048] ? syscall_return_slowpath+0x550/0x550 [ 33.933947] ? syscall_return_slowpath+0x2ac/0x550 [ 33.938848] ? prepare_exit_to_usermode+0x350/0x350 [ 33.943836] ? sysret32_from_system_call+0x5/0x3c [ 33.948652] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.953481] entry_SYSENTER_compat+0x70/0x7f [ 33.957861] RIP: 0023:0xf7f28c99 [ 33.961194] RSP: 002b:00000000ffd9739c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.968872] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.976111] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.983352] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.990592] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.997833] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.005090] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 34.024167] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b013fc78 [ 34.030768] ---[ end trace cb5d74964cff1a4e ]--- [ 34.035520] Kernel panic - not syncing: Fatal exception [ 34.041261] Dumping ftrace buffer: [ 34.044778] (ftrace buffer empty) [ 34.048456] Kernel Offset: disabled [ 34.052053] Rebooting in 86400 seconds..