[....] Starting enhanced syslogd: rsyslogd[ 16.079467] audit: type=1400 audit(1520428161.588:5): avc: denied { syslog } for pid=4066 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: [ 19.553055] audit: type=1400 audit(1520428165.061:6): avc: denied { map } for pid=4206 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 '10.128.0.15' (ECDSA) to the list of known hosts. executing program [ 25.858217] audit: type=1400 audit(1520428171.366:7): avc: denied { map } for pid=4220 comm="syzkaller936310" path="/root/syzkaller936310805" 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 [ 31.200135] kasan: CONFIG_KASAN_INLINE enabled [ 31.204822] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.212196] general protection fault: 0000 [#1] SMP KASAN [ 31.217710] Dumping ftrace buffer: [ 31.221217] (ftrace buffer empty) [ 31.224895] Modules linked in: [ 31.228061] CPU: 0 PID: 4220 Comm: syzkaller936310 Not tainted 4.16.0-rc4+ #344 [ 31.235470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.244797] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.249867] RSP: 0018:ffff8801bd047cc8 EFLAGS: 00010206 [ 31.255200] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 31.262440] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.269678] RBP: ffff8801bd047ce0 R08: 0000000000000000 R09: 1ffff10037a08f15 [ 31.276914] R10: ffff8801bd047870 R11: 0000000000000001 R12: ffff8801b438d7d2 [ 31.284152] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bd047d58 [ 31.291390] FS: 0000000001aae880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 31.299583] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.305433] CR2: 00007fa550e33000 CR3: 00000001b48a4001 CR4: 00000000001606f0 [ 31.312672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.319908] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.327143] Call Trace: [ 31.329706] smc_shutdown+0x3ed/0x540 [ 31.333480] SyS_shutdown+0x137/0x290 [ 31.337250] ? SyS_getsockopt+0x340/0x340 [ 31.341376] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.346884] ? do_syscall_64+0xb7/0x940 [ 31.350830] ? SyS_getsockopt+0x340/0x340 [ 31.354944] do_syscall_64+0x281/0x940 [ 31.358801] ? __do_page_fault+0xc90/0xc90 [ 31.363002] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.367732] ? syscall_return_slowpath+0x550/0x550 [ 31.372628] ? syscall_return_slowpath+0x2ac/0x550 [ 31.377523] ? prepare_exit_to_usermode+0x350/0x350 [ 31.382509] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.387841] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.392654] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.397812] RIP: 0033:0x43fcb9 [ 31.400972] RSP: 002b:00007ffd1e090a48 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 31.408646] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 31.415886] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 31.423124] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.430365] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 31.437601] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 31.444847] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 2f 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 [ 31.463910] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bd047cc8 [ 31.470540] ---[ end trace f0a1f85b5eadcaee ]--- [ 31.475289] Kernel panic - not syncing: Fatal exception [ 31.481158] Dumping ftrace buffer: [ 31.484668] (ftrace buffer empty) [ 31.488347] Kernel Offset: disabled [ 31.491945] Rebooting in 86400 seconds..