[....] Starting enhanced syslogd: rsyslogd[ 15.144389] audit: type=1400 audit(1521640105.719:5): avc: denied { syslog } for pid=4011 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: [ 19.164812] audit: type=1400 audit(1521640109.739:6): avc: denied { map } for pid=4151 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 '10.128.0.7' (ECDSA) to the list of known hosts. executing program [ 25.461296] audit: type=1400 audit(1521640116.035:7): avc: denied { map } for pid=4165 comm="syzkaller478408" path="/root/syzkaller478408296" 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 [ 30.688322] kasan: CONFIG_KASAN_INLINE enabled [ 30.693039] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.700546] general protection fault: 0000 [#1] SMP KASAN [ 30.706064] Dumping ftrace buffer: [ 30.709574] (ftrace buffer empty) [ 30.713257] Modules linked in: [ 30.716427] CPU: 1 PID: 4165 Comm: syzkaller478408 Not tainted 4.16.0-rc6+ #271 [ 30.723841] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.733169] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.738240] RSP: 0018:ffff8801bcacfc78 EFLAGS: 00010206 [ 30.743573] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 30.750810] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.758051] RBP: ffff8801bcacfc90 R08: 0000000000000000 R09: 1ffff10037959f0b [ 30.765290] R10: ffff8801bcacf820 R11: 0000000000000001 R12: ffff8801be2f37d2 [ 30.772531] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bcacfd08 [ 30.779774] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000990f840 [ 30.787968] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.793820] CR2: 00007fcc35a57000 CR3: 00000001cb9a9006 CR4: 00000000001606e0 [ 30.801061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.808300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.815539] Call Trace: [ 30.818101] smc_shutdown+0x3ed/0x540 [ 30.821875] SyS_shutdown+0x137/0x290 [ 30.825644] ? SyS_getsockopt+0x340/0x340 [ 30.829766] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.835271] ? do_fast_syscall_32+0x156/0xf9f [ 30.839737] ? SyS_getsockopt+0x340/0x340 [ 30.843854] do_fast_syscall_32+0x3ec/0xf9f [ 30.848150] ? do_int80_syscall_32+0x9c0/0x9c0 [ 30.852700] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.857426] ? syscall_return_slowpath+0x550/0x550 [ 30.862324] ? syscall_return_slowpath+0x2ac/0x550 [ 30.867227] ? prepare_exit_to_usermode+0x350/0x350 [ 30.872215] ? sysret32_from_system_call+0x5/0x3c [ 30.877031] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.881846] entry_SYSENTER_compat+0x70/0x7f [ 30.886225] RIP: 0023:0xf7efec99 [ 30.889558] RSP: 002b:00000000ff941a9c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 30.897236] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 30.904473] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 30.911713] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.918950] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.926190] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.933446] 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 [ 30.952511] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bcacfc78 [ 30.959119] ---[ end trace 1218d8415012d14c ]--- [ 30.963865] Kernel panic - not syncing: Fatal exception [ 30.969570] Dumping ftrace buffer: [ 30.973082] (ftrace buffer empty) [ 30.976760] Kernel Offset: disabled [ 30.980356] Rebooting in 86400 seconds..