[....] Starting enhanced syslogd: rsyslogd[ 16.020805] audit: type=1400 audit(1519700315.943:5): avc: denied { syslog } for pid=3955 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: [ 18.381428] audit: type=1400 audit(1519700318.304:6): avc: denied { map } for pid=4093 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 '10.128.15.205' (ECDSA) to the list of known hosts. executing program [ 24.682232] audit: type=1400 audit(1519700324.605:7): avc: denied { map } for pid=4107 comm="syzkaller148160" path="/root/syzkaller148160501" 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 [ 30.175434] kasan: CONFIG_KASAN_INLINE enabled [ 30.180166] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.187551] general protection fault: 0000 [#1] SMP KASAN [ 30.193070] Dumping ftrace buffer: [ 30.196578] (ftrace buffer empty) [ 30.200257] Modules linked in: [ 30.203421] CPU: 1 PID: 4107 Comm: syzkaller148160 Not tainted 4.16.0-rc3+ #240 [ 30.210835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.220172] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.225240] RSP: 0018:ffff8801ba9afc78 EFLAGS: 00010206 [ 30.230571] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 30.237810] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.245061] RBP: ffff8801ba9afc90 R08: 0000000000000000 R09: 1ffff10037535f0b [ 30.252310] R10: ffff8801ba9af820 R11: 0000000000000001 R12: ffff8801cc4587d2 [ 30.259555] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801ba9afd08 [ 30.266800] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000963a840 [ 30.274999] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.280850] CR2: 0000000001464450 CR3: 00000001cbd82006 CR4: 00000000001606e0 [ 30.288092] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.295330] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.302576] Call Trace: [ 30.305149] smc_shutdown+0x3ed/0x540 [ 30.309062] SyS_shutdown+0x137/0x290 [ 30.312833] ? SyS_getsockopt+0x340/0x340 [ 30.316955] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.322462] ? do_fast_syscall_32+0x156/0xf9f [ 30.326928] ? SyS_getsockopt+0x340/0x340 [ 30.331044] do_fast_syscall_32+0x3ec/0xf9f [ 30.335340] ? do_int80_syscall_32+0x9c0/0x9c0 [ 30.339890] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.344618] ? syscall_return_slowpath+0x550/0x550 [ 30.349518] ? syscall_return_slowpath+0x2ac/0x550 [ 30.354429] ? prepare_exit_to_usermode+0x350/0x350 [ 30.359420] ? sysret32_from_system_call+0x5/0x3c [ 30.364233] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.369050] entry_SYSENTER_compat+0x70/0x7f [ 30.373426] RIP: 0023:0xf7f1cc99 [ 30.376762] RSP: 002b:00000000ffaff62c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 30.384438] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 30.391677] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 30.398915] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.406154] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.413395] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.420644] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 bc 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 [ 30.439712] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801ba9afc78 [ 30.446343] ---[ end trace d9c9f8f456d73fab ]--- [ 30.451084] Kernel panic - not syncing: Fatal exception [ 30.456787] Dumping ftrace buffer: [ 30.460301] (ftrace buffer empty) [ 30.463981] Kernel Offset: disabled [ 30.467578] Rebooting in 86400 seconds..