[....] Starting enhanced syslogd: rsyslogd[ 15.204192] audit: type=1400 audit(1519811672.787:5): avc: denied { syslog } for pid=4071 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: [ 19.885305] audit: type=1400 audit(1519811677.468:6): avc: denied { map } for pid=4211 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 '10.128.0.58' (ECDSA) to the list of known hosts. executing program [ 26.189328] audit: type=1400 audit(1519811683.772:7): avc: denied { map } for pid=4225 comm="syzkaller713698" path="/root/syzkaller713698341" 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 [ 31.200132] kasan: CONFIG_KASAN_INLINE enabled [ 31.204814] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.212195] general protection fault: 0000 [#1] SMP KASAN [ 31.217714] Dumping ftrace buffer: [ 31.221221] (ftrace buffer empty) [ 31.224902] Modules linked in: [ 31.228068] CPU: 0 PID: 4225 Comm: syzkaller713698 Not tainted 4.16.0-rc3+ #332 [ 31.235482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.244812] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.249879] RSP: 0018:ffff8801b1597cc8 EFLAGS: 00010206 [ 31.255212] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 31.262448] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.269686] RBP: ffff8801b1597ce0 R08: 0000000000000000 R09: 1ffff100362b2f15 [ 31.276923] R10: ffff8801b1597870 R11: 0000000000000001 R12: ffff8801b16ee7d2 [ 31.284162] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b1597d58 [ 31.291401] FS: 0000000001573880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 31.299593] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.305442] CR2: 00007f1ac2e55000 CR3: 00000001b15e4003 CR4: 00000000001606f0 [ 31.312681] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.319922] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.327159] Call Trace: [ 31.329723] smc_shutdown+0x3ed/0x540 [ 31.333499] SyS_shutdown+0x137/0x290 [ 31.337272] ? SyS_getsockopt+0x340/0x340 [ 31.341392] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.346900] ? do_syscall_64+0xb7/0x940 [ 31.350842] ? SyS_getsockopt+0x340/0x340 [ 31.354960] do_syscall_64+0x281/0x940 [ 31.358819] ? __do_page_fault+0xc90/0xc90 [ 31.363029] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.367754] ? syscall_return_slowpath+0x550/0x550 [ 31.372651] ? syscall_return_slowpath+0x2ac/0x550 [ 31.377548] ? prepare_exit_to_usermode+0x350/0x350 [ 31.382534] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.387870] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.392683] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.397839] RIP: 0033:0x43fcb9 [ 31.400999] RSP: 002b:00007ffd9382fe28 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 31.408680] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 31.415919] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 31.423159] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.430401] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 31.437651] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 31.444895] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 31.463971] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b1597cc8 [ 31.470605] ---[ end trace 8e51e6f33f8b1f1f ]--- [ 31.475350] Kernel panic - not syncing: Fatal exception [ 31.481091] Dumping ftrace buffer: [ 31.484598] (ftrace buffer empty) [ 31.488277] Kernel Offset: disabled [ 31.491872] Rebooting in 86400 seconds..