[....] Starting enhanced syslogd: rsyslogd[ 17.140282] audit: type=1400 audit(1520768463.469:5): avc: denied { syslog } for pid=4083 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: [ 23.393061] audit: type=1400 audit(1520768469.722:6): avc: denied { map } for pid=4222 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 '10.128.0.34' (ECDSA) to the list of known hosts. executing program [ 29.914328] audit: type=1400 audit(1520768476.244:7): avc: denied { map } for pid=4236 comm="syzkaller209517" path="/root/syzkaller209517937" 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 [ 35.296164] kasan: CONFIG_KASAN_INLINE enabled [ 35.300960] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.308368] general protection fault: 0000 [#1] SMP KASAN [ 35.313877] Dumping ftrace buffer: [ 35.317383] (ftrace buffer empty) [ 35.321066] Modules linked in: [ 35.324234] CPU: 1 PID: 4236 Comm: syzkaller209517 Not tainted 4.16.0-rc4+ #349 [ 35.331651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.340979] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.346045] RSP: 0018:ffff8801b0bcfcc8 EFLAGS: 00010206 [ 35.351374] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 35.358611] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.365850] RBP: ffff8801b0bcfce0 R08: 0000000000000000 R09: 1ffff10036179f15 [ 35.373092] R10: ffff8801b0bcf870 R11: 0000000000000001 R12: ffff8801b42797d2 [ 35.380329] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0bcfd58 [ 35.387567] FS: 00000000021d3880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.395762] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.401615] CR2: 000000000117ba60 CR3: 00000001b0279005 CR4: 00000000001606e0 [ 35.408857] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.416098] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.423338] Call Trace: [ 35.425898] smc_shutdown+0x3ed/0x540 [ 35.429672] SyS_shutdown+0x137/0x290 [ 35.433442] ? SyS_getsockopt+0x340/0x340 [ 35.437562] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.443066] ? do_syscall_64+0xb7/0x940 [ 35.447010] ? SyS_getsockopt+0x340/0x340 [ 35.451126] do_syscall_64+0x281/0x940 [ 35.454986] ? __do_page_fault+0xc90/0xc90 [ 35.459191] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.463915] ? syscall_return_slowpath+0x550/0x550 [ 35.468810] ? syscall_return_slowpath+0x2ac/0x550 [ 35.473708] ? prepare_exit_to_usermode+0x350/0x350 [ 35.478693] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 35.484028] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.488840] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 35.493996] RIP: 0033:0x43fcb9 [ 35.497161] RSP: 002b:00007fff94880a28 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 35.504834] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 35.512074] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.519312] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.526548] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.533786] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.541033] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 5c 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 [ 35.560108] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0bcfcc8 [ 35.566710] ---[ end trace f353ab796789baf6 ]--- [ 35.571446] Kernel panic - not syncing: Fatal exception [ 35.577183] Dumping ftrace buffer: [ 35.580694] (ftrace buffer empty) [ 35.584375] Kernel Offset: disabled [ 35.587972] Rebooting in 86400 seconds..