[....] Starting enhanced syslogd: rsyslogd[ 17.511799] audit: type=1400 audit(1519498993.862:5): avc: denied { syslog } for pid=4078 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: [ 21.998299] audit: type=1400 audit(1519498998.349:6): avc: denied { map } for pid=4217 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 '10.128.15.209' (ECDSA) to the list of known hosts. executing program [ 28.328589] audit: type=1400 audit(1519499004.679:7): avc: denied { map } for pid=4231 comm="syzkaller006833" path="/root/syzkaller006833617" 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 [ 33.759247] kasan: CONFIG_KASAN_INLINE enabled [ 33.764143] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.771708] general protection fault: 0000 [#1] SMP KASAN [ 33.777218] Dumping ftrace buffer: [ 33.780727] (ftrace buffer empty) [ 33.784407] Modules linked in: [ 33.787574] CPU: 0 PID: 4231 Comm: syzkaller006833 Not tainted 4.16.0-rc2+ #327 [ 33.794990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.804330] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.809401] RSP: 0018:ffff8801b13bfcc8 EFLAGS: 00010206 [ 33.814732] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 33.821972] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829211] RBP: ffff8801b13bfce0 R08: 0000000000000000 R09: 1ffff10036277f15 [ 33.836448] R10: ffff8801b13bf870 R11: 0000000000000001 R12: ffff8801d7cf57d2 [ 33.843687] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b13bfd58 [ 33.850927] FS: 00000000018fe880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 33.859130] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.864982] CR2: 00007f42321e2000 CR3: 00000001d2f87003 CR4: 00000000001606f0 [ 33.872231] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.879481] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.886721] Call Trace: [ 33.889286] smc_shutdown+0x3ed/0x540 [ 33.893061] SyS_shutdown+0x137/0x290 [ 33.896830] ? SyS_getsockopt+0x340/0x340 [ 33.900951] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.906460] ? do_syscall_64+0xb6/0x940 [ 33.910421] ? SyS_getsockopt+0x340/0x340 [ 33.914538] do_syscall_64+0x280/0x940 [ 33.918397] ? __do_page_fault+0xc90/0xc90 [ 33.922601] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.927326] ? syscall_return_slowpath+0x550/0x550 [ 33.932225] ? syscall_return_slowpath+0x2ac/0x550 [ 33.937125] ? prepare_exit_to_usermode+0x350/0x350 [ 33.942112] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 33.947463] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.952283] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 33.957442] RIP: 0033:0x43fce9 [ 33.960602] RSP: 002b:00007fff7915ded8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 33.968290] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 33.975531] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 33.982770] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 33.990185] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 33.997425] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 34.004672] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac e5 10 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 [ 34.023744] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b13bfcc8 [ 34.030348] ---[ end trace d89f2e17e62d5061 ]--- [ 34.035093] Kernel panic - not syncing: Fatal exception [ 34.040805] Dumping ftrace buffer: [ 34.044318] (ftrace buffer empty) [ 34.047998] Kernel Offset: disabled [ 34.051595] Rebooting in 86400 seconds..