[....] Starting enhanced syslogd: rsyslogd[ 15.235058] audit: type=1400 audit(1521581095.981:5): avc: denied { syslog } for pid=3872 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: [ 17.759944] audit: type=1400 audit(1521581098.506:6): avc: denied { map } for pid=4011 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 '10.128.0.46' (ECDSA) to the list of known hosts. executing program [ 36.430386] audit: type=1400 audit(1521581117.177:7): avc: denied { map } for pid=4029 comm="syzkaller169816" path="/root/syzkaller169816572" 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 [ 41.439558] kasan: CONFIG_KASAN_INLINE enabled [ 41.444291] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.451662] general protection fault: 0000 [#1] SMP KASAN [ 41.457180] Dumping ftrace buffer: [ 41.460688] (ftrace buffer empty) [ 41.464368] Modules linked in: [ 41.467532] CPU: 1 PID: 4029 Comm: syzkaller169816 Not tainted 4.16.0-rc6+ #270 [ 41.474958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.484291] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 41.489360] RSP: 0018:ffff8801d8637c78 EFLAGS: 00010206 [ 41.494689] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 41.501926] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 41.509164] RBP: ffff8801d8637c90 R08: 0000000000000000 R09: 1ffff1003b0c6f0b [ 41.516403] R10: ffff8801d8637820 R11: 0000000000000001 R12: ffff8801c9fd27d2 [ 41.523643] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d8637d08 [ 41.530883] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000960b840 [ 41.539076] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 41.544924] CR2: ffffffffff600400 CR3: 00000001b951b001 CR4: 00000000001606e0 [ 41.552164] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.559404] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.566642] Call Trace: [ 41.569203] smc_shutdown+0x3ed/0x540 [ 41.572974] SyS_shutdown+0x137/0x290 [ 41.576747] ? SyS_getsockopt+0x340/0x340 [ 41.580870] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 41.586376] ? do_fast_syscall_32+0x156/0xf9f [ 41.590839] ? SyS_getsockopt+0x340/0x340 [ 41.594955] do_fast_syscall_32+0x3ec/0xf9f [ 41.599258] ? do_int80_syscall_32+0x9c0/0x9c0 [ 41.603808] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.608533] ? syscall_return_slowpath+0x550/0x550 [ 41.613429] ? syscall_return_slowpath+0x2ac/0x550 [ 41.618327] ? prepare_exit_to_usermode+0x350/0x350 [ 41.623402] ? sysret32_from_system_call+0x5/0x3c [ 41.628213] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.633030] entry_SYSENTER_compat+0x70/0x7f [ 41.637406] RIP: 0023:0xf7f47c99 [ 41.640738] RSP: 002b:00000000ff97807c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 41.648413] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 41.655650] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 41.662887] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 41.670126] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 41.677364] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 41.684608] 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 [ 41.703670] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d8637c78 [ 41.710300] ---[ end trace 3f2996a9da49a626 ]--- [ 41.715044] Kernel panic - not syncing: Fatal exception [ 41.720732] Dumping ftrace buffer: [ 41.724240] (ftrace buffer empty) [ 41.727919] Kernel Offset: disabled [ 41.731526] Rebooting in 86400 seconds..