[....] Starting enhanced syslogd: rsyslogd[ 15.718190] audit: type=1400 audit(1520814453.830:5): avc: denied { syslog } for pid=4022 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: [ 18.440893] audit: type=1400 audit(1520814456.552:6): avc: denied { map } for pid=4162 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 '10.128.0.57' (ECDSA) to the list of known hosts. executing program [ 24.744732] audit: type=1400 audit(1520814462.856:7): avc: denied { map } for pid=4176 comm="syzkaller155023" path="/root/syzkaller155023600" 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 [ 30.176159] kasan: CONFIG_KASAN_INLINE enabled [ 30.180962] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.188395] general protection fault: 0000 [#1] SMP KASAN [ 30.193947] Dumping ftrace buffer: [ 30.197461] (ftrace buffer empty) [ 30.201139] Modules linked in: [ 30.204302] CPU: 1 PID: 4176 Comm: syzkaller155023 Not tainted 4.16.0-rc4+ #260 [ 30.211714] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.221048] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.226117] RSP: 0018:ffff8801bafafc78 EFLAGS: 00010206 [ 30.231446] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 30.238682] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.245928] RBP: ffff8801bafafc90 R08: 0000000000000000 R09: 1ffff100375f5f0b [ 30.253175] R10: ffff8801bafaf820 R11: 0000000000000001 R12: ffff8801baee77d2 [ 30.260412] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bafafd08 [ 30.267652] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000995b840 [ 30.275844] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.281692] CR2: 00007f6bf457a000 CR3: 00000001af4d0002 CR4: 00000000001606e0 [ 30.288935] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.296179] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.303427] Call Trace: [ 30.306013] smc_shutdown+0x3ed/0x540 [ 30.309792] SyS_shutdown+0x137/0x290 [ 30.313563] ? SyS_getsockopt+0x340/0x340 [ 30.317681] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.323197] ? do_fast_syscall_32+0x156/0xf9f [ 30.327690] ? SyS_getsockopt+0x340/0x340 [ 30.331821] do_fast_syscall_32+0x3ec/0xf9f [ 30.336119] ? do_int80_syscall_32+0x9c0/0x9c0 [ 30.340675] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.346182] ? syscall_return_slowpath+0x550/0x550 [ 30.351078] ? syscall_return_slowpath+0x2ac/0x550 [ 30.355977] ? sysret32_from_system_call+0x5/0x3c [ 30.360789] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.365601] entry_SYSENTER_compat+0x70/0x7f [ 30.369977] RIP: 0023:0xf7fe4c99 [ 30.373306] RSP: 002b:00000000ff85bacc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 30.380981] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 30.388227] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 30.395467] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.402706] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.409944] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.417196] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 5c 2f 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 [ 30.436260] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bafafc78 [ 30.442856] ---[ end trace 0acd66c555b545b7 ]--- [ 30.447595] Kernel panic - not syncing: Fatal exception [ 30.453258] Dumping ftrace buffer: [ 30.456764] (ftrace buffer empty) [ 30.460443] Kernel Offset: disabled [ 30.464040] Rebooting in 86400 seconds..