[....] Starting enhanced syslogd: rsyslogd[ 15.749765] audit: type=1400 audit(1520871274.562:5): avc: denied { syslog } for pid=3961 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: [ 19.002226] audit: type=1400 audit(1520871277.814:6): avc: denied { map } for pid=4101 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 '10.128.10.13' (ECDSA) to the list of known hosts. executing program [ 45.963044] audit: type=1400 audit(1520871304.775:7): avc: denied { map } for pid=4118 comm="syzkaller055921" path="/root/syzkaller055921219" 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 [ 51.168125] kasan: CONFIG_KASAN_INLINE enabled [ 51.172817] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.180193] general protection fault: 0000 [#1] SMP KASAN [ 51.185703] Dumping ftrace buffer: [ 51.189220] (ftrace buffer empty) [ 51.192908] Modules linked in: [ 51.196084] CPU: 1 PID: 4118 Comm: syzkaller055921 Not tainted 4.16.0-rc5+ #261 [ 51.203507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.212853] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 51.217926] RSP: 0018:ffff8801c73efc78 EFLAGS: 00010206 [ 51.223261] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fe6f4 [ 51.230511] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 51.237754] RBP: ffff8801c73efc90 R08: 0000000000000000 R09: 1ffff10038e7df0b [ 51.244993] R10: ffff8801c73ef820 R11: 0000000000000001 R12: ffff8801cc1747d2 [ 51.252236] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801c73efd08 [ 51.259478] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008872840 [ 51.267676] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 51.273540] CR2: 0000558a3c031100 CR3: 00000001c724b001 CR4: 00000000001606e0 [ 51.280784] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.288024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.295270] Call Trace: [ 51.297835] smc_shutdown+0x3ed/0x540 [ 51.301609] SyS_shutdown+0x137/0x290 [ 51.305381] ? SyS_getsockopt+0x340/0x340 [ 51.309514] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 51.315022] ? do_fast_syscall_32+0x156/0xf9f [ 51.319491] ? SyS_getsockopt+0x340/0x340 [ 51.323611] do_fast_syscall_32+0x3ec/0xf9f [ 51.327915] ? do_int80_syscall_32+0x9c0/0x9c0 [ 51.332468] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 51.337195] ? syscall_return_slowpath+0x550/0x550 [ 51.342097] ? syscall_return_slowpath+0x2ac/0x550 [ 51.346998] ? prepare_exit_to_usermode+0x350/0x350 [ 51.351992] ? sysret32_from_system_call+0x5/0x3c [ 51.356809] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.361627] entry_SYSENTER_compat+0x70/0x7f [ 51.366010] RIP: 0023:0xf7f15c99 [ 51.369344] RSP: 002b:00000000ff8c3b8c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 51.377022] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 51.384274] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 51.391517] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 51.398770] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 51.406026] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.413276] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 30 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 [ 51.432358] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801c73efc78 [ 51.438961] ---[ end trace 9d50138aa3702863 ]--- [ 51.443706] Kernel panic - not syncing: Fatal exception [ 51.449429] Dumping ftrace buffer: [ 51.452940] (ftrace buffer empty) [ 51.456630] Kernel Offset: disabled [ 51.460227] Rebooting in 86400 seconds..