[....] Starting enhanced syslogd: rsyslogd[ 16.471050] audit: type=1400 audit(1521371716.620:5): avc: denied { syslog } for pid=4084 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: [ 22.764913] audit: type=1400 audit(1521371722.914:6): avc: denied { map } for pid=4224 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 '10.128.0.4' (ECDSA) to the list of known hosts. executing program [ 29.113454] audit: type=1400 audit(1521371729.263:7): avc: denied { map } for pid=4238 comm="syzkaller909976" path="/root/syzkaller909976976" 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 [ 34.272142] kasan: CONFIG_KASAN_INLINE enabled [ 34.276859] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284409] general protection fault: 0000 [#1] SMP KASAN [ 34.289932] Dumping ftrace buffer: [ 34.293443] (ftrace buffer empty) [ 34.297126] Modules linked in: [ 34.300291] CPU: 0 PID: 4238 Comm: syzkaller909976 Not tainted 4.16.0-rc5+ #357 [ 34.307711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.317045] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.322118] RSP: 0018:ffff8801b178fcc8 EFLAGS: 00010206 [ 34.327451] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.334694] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.341953] RBP: ffff8801b178fce0 R08: 0000000000000000 R09: 1ffff100362f1f15 [ 34.349194] R10: ffff8801b178f870 R11: 0000000000000001 R12: ffff8801b16f27d2 [ 34.356435] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b178fd58 [ 34.363689] FS: 0000000000b3a880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.371883] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.377735] CR2: 00007ff863468000 CR3: 00000001b169e004 CR4: 00000000001606f0 [ 34.384987] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399470] Call Trace: [ 34.402038] smc_shutdown+0x3ed/0x540 [ 34.405815] SyS_shutdown+0x137/0x290 [ 34.409591] ? SyS_getsockopt+0x340/0x340 [ 34.413715] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419224] ? do_syscall_64+0xb7/0x940 [ 34.423197] ? SyS_getsockopt+0x340/0x340 [ 34.427316] do_syscall_64+0x281/0x940 [ 34.431173] ? __do_page_fault+0xc90/0xc90 [ 34.435381] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.440889] ? syscall_return_slowpath+0x550/0x550 [ 34.445791] ? syscall_return_slowpath+0x2ac/0x550 [ 34.450702] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.456044] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.460861] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.466025] RIP: 0033:0x43fcb9 [ 34.469196] RSP: 002b:00007fffccbf07d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.476877] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 34.484122] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 34.491366] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 34.498622] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 34.505872] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 34.513123] 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 [ 34.532198] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b178fcc8 [ 34.538844] ---[ end trace f7eebeb205ad0ca2 ]--- [ 34.543607] Kernel panic - not syncing: Fatal exception [ 34.549492] Dumping ftrace buffer: [ 34.553035] (ftrace buffer empty) [ 34.558139] Kernel Offset: disabled [ 34.561738] Rebooting in 86400 seconds..