[....] Starting enhanced syslogd: rsyslogd[ 14.693736] audit: type=1400 audit(1521367966.746:5): avc: denied { syslog } for pid=4017 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: [ 18.391769] audit: type=1400 audit(1521367970.444:6): avc: denied { map } for pid=4157 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 '10.128.0.24' (ECDSA) to the list of known hosts. executing program [ 24.685683] audit: type=1400 audit(1521367976.738:7): avc: denied { map } for pid=4171 comm="syzkaller047496" path="/root/syzkaller047496340" 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 [ 30.176303] kasan: CONFIG_KASAN_INLINE enabled [ 30.181044] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.188422] general protection fault: 0000 [#1] SMP KASAN [ 30.193940] Dumping ftrace buffer: [ 30.197452] (ftrace buffer empty) [ 30.201131] Modules linked in: [ 30.204294] CPU: 1 PID: 4171 Comm: syzkaller047496 Not tainted 4.16.0-rc5+ #267 [ 30.211708] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.221041] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.226110] RSP: 0018:ffff8801b07cfc78 EFLAGS: 00010206 [ 30.231441] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 30.238678] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.245920] RBP: ffff8801b07cfc90 R08: 0000000000000000 R09: 1ffff100360f9f0b [ 30.253157] R10: ffff8801b07cf820 R11: 0000000000000001 R12: ffff8801bd1177d2 [ 30.260396] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b07cfd08 [ 30.267636] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008780840 [ 30.275830] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.281682] CR2: ffffffffff600400 CR3: 00000001be512005 CR4: 00000000001606e0 [ 30.288929] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.296167] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.303409] Call Trace: [ 30.305973] smc_shutdown+0x3ed/0x540 [ 30.309747] SyS_shutdown+0x137/0x290 [ 30.313516] ? SyS_getsockopt+0x340/0x340 [ 30.317654] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.323160] ? do_fast_syscall_32+0x156/0xf9f [ 30.327624] ? SyS_getsockopt+0x340/0x340 [ 30.331741] do_fast_syscall_32+0x3ec/0xf9f [ 30.336036] ? do_int80_syscall_32+0x9c0/0x9c0 [ 30.340588] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.345314] ? syscall_return_slowpath+0x550/0x550 [ 30.350213] ? syscall_return_slowpath+0x2ac/0x550 [ 30.355111] ? prepare_exit_to_usermode+0x350/0x350 [ 30.360099] ? sysret32_from_system_call+0x5/0x3c [ 30.364915] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.369731] entry_SYSENTER_compat+0x70/0x7f [ 30.374108] RIP: 0023:0xf7f18c99 [ 30.377441] RSP: 002b:00000000ffcb3eec EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 30.385238] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 30.392489] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 30.399732] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.406977] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.414220] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.421467] 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 [ 30.440542] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b07cfc78 [ 30.447185] ---[ end trace 3f66454cd3ed1ec9 ]--- [ 30.451928] Kernel panic - not syncing: Fatal exception [ 30.457648] Dumping ftrace buffer: [ 30.461153] (ftrace buffer empty) [ 30.464830] Kernel Offset: disabled [ 30.468424] Rebooting in 86400 seconds..