[....] Starting enhanced syslogd: rsyslogd[ 15.687920] audit: type=1400 audit(1519334769.452:5): avc: denied { syslog } for pid=3952 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: [ 18.208568] audit: type=1400 audit(1519334771.973:6): avc: denied { map } for pid=4091 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 '10.128.0.53' (ECDSA) to the list of known hosts. executing program [ 30.490183] audit: type=1400 audit(1519334784.255:7): avc: denied { map } for pid=4107 comm="syzkaller141165" path="/root/syzkaller141165324" 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 [ 35.808226] kasan: CONFIG_KASAN_INLINE enabled [ 35.813164] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.820595] general protection fault: 0000 [#1] SMP KASAN [ 35.826110] Dumping ftrace buffer: [ 35.829623] (ftrace buffer empty) [ 35.833337] Modules linked in: [ 35.836507] CPU: 0 PID: 4107 Comm: syzkaller141165 Not tainted 4.16.0-rc2+ #324 [ 35.843921] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.853255] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.858324] RSP: 0018:ffff8801c905fcc8 EFLAGS: 00010206 [ 35.863661] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 35.870900] RDX: 0000000000000005 RSI: 0000000000000002 RDI: 0000000000000028 [ 35.878141] RBP: ffff8801c905fce0 R08: 0000000000000000 R09: 1ffff1003920bf15 [ 35.885380] R10: ffff8801c905f870 R11: 0000000000000001 R12: ffff8801c90267d2 [ 35.892620] R13: 0000000000000002 R14: 0000000000000000 R15: ffff8801c905fd58 [ 35.899880] FS: 00000000006e6880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 35.908073] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.914020] CR2: 00007fc70e02f000 CR3: 00000001ca694005 CR4: 00000000001606f0 [ 35.921262] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.928513] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.935764] Call Trace: [ 35.938331] smc_shutdown+0x3ed/0x540 [ 35.942103] SyS_shutdown+0x137/0x290 [ 35.945879] ? SyS_getsockopt+0x340/0x340 [ 35.950005] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.955513] ? do_syscall_64+0xb6/0x940 [ 35.959460] ? SyS_getsockopt+0x340/0x340 [ 35.963583] do_syscall_64+0x280/0x940 [ 35.967441] ? __do_page_fault+0xc90/0xc90 [ 35.971647] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.976375] ? syscall_return_slowpath+0x550/0x550 [ 35.981273] ? syscall_return_slowpath+0x2ac/0x550 [ 35.986177] ? prepare_exit_to_usermode+0x350/0x350 [ 35.991166] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 35.996501] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.001319] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 36.006478] RIP: 0033:0x43fcb9 [ 36.009638] RSP: 002b:00007ffde8479798 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 36.017317] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 36.024557] RDX: 000000000043fcb9 RSI: 0000000000000002 RDI: 0000000000000003 [ 36.031796] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 36.039036] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 36.046276] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 36.053526] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 dc 04 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 [ 36.072610] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801c905fcc8 [ 36.079217] ---[ end trace 187d9b346b4a5aff ]--- [ 36.083969] Kernel panic - not syncing: Fatal exception [ 36.089656] Dumping ftrace buffer: [ 36.093175] (ftrace buffer empty) [ 36.096861] Kernel Offset: disabled [ 36.100460] Rebooting in 86400 seconds..