[....] Starting enhanced syslogd: rsyslogd[ 16.100583] audit: type=1400 audit(1519879113.344:5): avc: denied { syslog } for pid=4073 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: [ 19.083140] audit: type=1400 audit(1519879116.326:6): avc: denied { map } for pid=4212 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program [ 30.232068] audit: type=1400 audit(1519879127.475:7): avc: denied { map } for pid=4227 comm="syzkaller606174" path="/root/syzkaller606174177" 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 [ 35.295156] kasan: CONFIG_KASAN_INLINE enabled [ 35.299935] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.307334] general protection fault: 0000 [#1] SMP KASAN [ 35.312845] Dumping ftrace buffer: [ 35.316352] (ftrace buffer empty) [ 35.320033] Modules linked in: [ 35.323198] CPU: 0 PID: 4227 Comm: syzkaller606174 Not tainted 4.16.0-rc3+ #333 [ 35.330609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.339939] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.345009] RSP: 0018:ffff8801b131fcc8 EFLAGS: 00010206 [ 35.350341] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 35.357582] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.364823] RBP: ffff8801b131fce0 R08: 0000000000000000 R09: 1ffff10036263f15 [ 35.372062] R10: ffff8801b131f870 R11: 0000000000000001 R12: ffff8801b06cf7d2 [ 35.379301] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b131fd58 [ 35.386541] FS: 00000000025de880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 35.394736] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.400587] CR2: 00007ff9c51ce000 CR3: 00000001b06d9003 CR4: 00000000001606f0 [ 35.407827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.415064] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.422301] Call Trace: [ 35.424865] smc_shutdown+0x3ed/0x540 [ 35.428816] SyS_shutdown+0x137/0x290 [ 35.432588] ? SyS_getsockopt+0x340/0x340 [ 35.436708] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.442214] ? do_syscall_64+0xb7/0x940 [ 35.446159] ? SyS_getsockopt+0x340/0x340 [ 35.450276] do_syscall_64+0x281/0x940 [ 35.454132] ? __do_page_fault+0xc90/0xc90 [ 35.458333] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.463059] ? syscall_return_slowpath+0x550/0x550 [ 35.467958] ? syscall_return_slowpath+0x2ac/0x550 [ 35.472858] ? prepare_exit_to_usermode+0x350/0x350 [ 35.477847] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 35.483188] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.488004] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 35.493161] RIP: 0033:0x43fce9 [ 35.496319] RSP: 002b:00007ffc761bb738 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 35.503995] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 35.511232] RDX: 000000000043fce9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.518480] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.525718] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401610 [ 35.532957] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 35.540203] 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 [ 35.559274] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b131fcc8 [ 35.565911] ---[ end trace 3bc59c1599dddb8d ]--- [ 35.570652] Kernel panic - not syncing: Fatal exception [ 35.576355] Dumping ftrace buffer: [ 35.579869] (ftrace buffer empty) [ 35.583547] Kernel Offset: disabled [ 35.587157] Rebooting in 86400 seconds..