[....] Starting enhanced syslogd: rsyslogd[ 14.964844] audit: type=1400 audit(1521352175.956:5): avc: denied { syslog } for pid=3996 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: [ 18.882602] audit: type=1400 audit(1521352179.874:6): avc: denied { map } for pid=4137 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 [ 42.145489] audit: type=1400 audit(1521352203.137:7): avc: denied { map } for pid=4154 comm="syzkaller473518" path="/root/syzkaller473518775" 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 [ 47.583157] kasan: CONFIG_KASAN_INLINE enabled [ 47.587852] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.595392] general protection fault: 0000 [#1] SMP KASAN [ 47.600902] Dumping ftrace buffer: [ 47.604415] (ftrace buffer empty) [ 47.608094] Modules linked in: [ 47.611265] CPU: 0 PID: 4154 Comm: syzkaller473518 Not tainted 4.16.0-rc5+ #357 [ 47.618684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.628019] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 47.633091] RSP: 0018:ffff8801d2a07cc8 EFLAGS: 00010206 [ 47.638424] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 47.645663] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 47.652904] RBP: ffff8801d2a07ce0 R08: 0000000000000000 R09: 1ffff1003a540f15 [ 47.660145] R10: ffff8801d2a07870 R11: 0000000000000001 R12: ffff8801be8e47d2 [ 47.667386] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d2a07d58 [ 47.674629] FS: 0000000001ef9880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 47.682825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.688677] CR2: ffffffffff600400 CR3: 00000001bea20003 CR4: 00000000001606f0 [ 47.695919] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.703161] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.710402] Call Trace: [ 47.712963] smc_shutdown+0x3ed/0x540 [ 47.716737] SyS_shutdown+0x137/0x290 [ 47.720507] ? SyS_getsockopt+0x340/0x340 [ 47.724628] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 47.730134] ? do_syscall_64+0xb7/0x940 [ 47.734080] ? SyS_getsockopt+0x340/0x340 [ 47.738198] do_syscall_64+0x281/0x940 [ 47.742055] ? __do_page_fault+0xc90/0xc90 [ 47.746266] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.751001] ? syscall_return_slowpath+0x550/0x550 [ 47.755900] ? syscall_return_slowpath+0x2ac/0x550 [ 47.760803] ? prepare_exit_to_usermode+0x350/0x350 [ 47.765794] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 47.771133] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.775948] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 47.781107] RIP: 0033:0x43fce9 [ 47.784269] RSP: 002b:00007ffd8a3f26d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 47.791947] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 47.799185] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 47.806425] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 47.813679] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 47.820940] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 47.828188] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 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 [ 47.847724] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d2a07cc8 [ 47.854381] ---[ end trace 5a07697bf8f5081d ]--- [ 47.859127] Kernel panic - not syncing: Fatal exception [ 47.864867] Dumping ftrace buffer: [ 47.868379] (ftrace buffer empty) [ 47.872061] Kernel Offset: disabled [ 47.875658] Rebooting in 86400 seconds..