[....] Starting enhanced syslogd: rsyslogd[ 18.421136] audit: type=1400 audit(1521175291.413:5): avc: denied { syslog } for pid=4121 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: [ 23.475077] audit: type=1400 audit(1521175296.466:6): avc: denied { map } for pid=4260 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 '10.128.0.27' (ECDSA) to the list of known hosts. executing program [ 29.849105] audit: type=1400 audit(1521175302.840:7): avc: denied { map } for pid=4274 comm="syzkaller668621" path="/root/syzkaller668621332" 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 [ 35.295113] kasan: CONFIG_KASAN_INLINE enabled [ 35.299868] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.307315] general protection fault: 0000 [#1] SMP KASAN [ 35.312843] Dumping ftrace buffer: [ 35.316367] (ftrace buffer empty) [ 35.320058] Modules linked in: [ 35.323235] CPU: 1 PID: 4274 Comm: syzkaller668621 Not tainted 4.16.0-rc5+ #355 [ 35.330665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.340024] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.345099] RSP: 0018:ffff8801b82efcc8 EFLAGS: 00010206 [ 35.350441] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 35.357699] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.364958] RBP: ffff8801b82efce0 R08: 0000000000000000 R09: 1ffff1003705df15 [ 35.372206] R10: ffff8801b82ef870 R11: 0000000000000001 R12: ffff8801b1a5d7d2 [ 35.379462] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b82efd58 [ 35.386708] FS: 000000000212a880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.394921] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.400782] CR2: 00007f297acba000 CR3: 00000001b0f7c001 CR4: 00000000001606e0 [ 35.408036] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.415291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.422545] Call Trace: [ 35.425117] smc_shutdown+0x3ed/0x540 [ 35.428908] SyS_shutdown+0x137/0x290 [ 35.432710] ? SyS_getsockopt+0x340/0x340 [ 35.436847] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.442367] ? do_syscall_64+0xb7/0x940 [ 35.446321] ? SyS_getsockopt+0x340/0x340 [ 35.450452] do_syscall_64+0x281/0x940 [ 35.454310] ? __do_page_fault+0xc90/0xc90 [ 35.458526] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.463256] ? syscall_return_slowpath+0x550/0x550 [ 35.468156] ? syscall_return_slowpath+0x2ac/0x550 [ 35.473068] ? prepare_exit_to_usermode+0x350/0x350 [ 35.478060] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 35.483398] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.488220] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 35.493389] RIP: 0033:0x43fcb9 [ 35.496572] RSP: 002b:00007fff8bc5d008 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 35.504271] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 35.511524] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.518780] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.526045] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.533299] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.540562] 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 [ 35.559724] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b82efcc8 [ 35.566369] ---[ end trace 5d43956ee65f9b52 ]--- [ 35.571137] Kernel panic - not syncing: Fatal exception [ 35.576895] Dumping ftrace buffer: [ 35.580429] (ftrace buffer empty) [ 35.584119] Kernel Offset: disabled [ 35.587717] Rebooting in 86400 seconds..