[....] Starting enhanced syslogd: rsyslogd[ 15.563979] audit: type=1400 audit(1521376975.182:5): avc: denied { syslog } for pid=4063 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: [ 19.573711] audit: type=1400 audit(1521376979.192:6): avc: denied { map } for pid=4201 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 '10.128.10.11' (ECDSA) to the list of known hosts. [ 25.794906] audit: type=1400 audit(1521376985.413:7): avc: denied { map } for pid=4215 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/18 12:43:05 parsed 1 programs 2018/03/18 12:43:05 executed programs: 0 [ 26.048692] audit: type=1400 audit(1521376985.667:8): avc: denied { map } for pid=4215 comm="syz-execprog" path="/root/syzkaller-shm859833784" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 26.063682] IPVS: ftp: loaded support on port[0] = 21 [ 26.109000] ------------[ cut here ]------------ [ 26.113852] kernel BUG at drivers/vhost/vhost.c:1655! [ 26.119080] invalid opcode: 0000 [#1] SMP KASAN [ 26.123740] Dumping ftrace buffer: [ 26.127252] (ftrace buffer empty) [ 26.130932] Modules linked in: [ 26.134098] CPU: 0 PID: 4224 Comm: syz-executor0 Not tainted 4.16.0-rc5+ #267 [ 26.141338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.150669] RIP: 0010:log_write+0x3ca/0x490 [ 26.154960] RSP: 0018:ffff8801d2f6f898 EFLAGS: 00010293 [ 26.160293] RAX: ffff8801b0fa83c0 RBX: dffffc0000000000 RCX: ffffffff8443f50a [ 26.167532] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801b0fa9798 [ 26.174860] RBP: ffff8801d2f6f9d8 R08: 0000000000000040 R09: 0000000000000001 [ 26.182107] R10: ffff8801d2f6f7b8 R11: 0000000000000002 R12: 0001ffffffffffff [ 26.189347] R13: ffffed003a5edf26 R14: ffff8801d2f6f9b0 R15: ffff8801d2f6f930 [ 26.196594] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000a007900 [ 26.204795] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 26.210653] CR2: 0000000020d7c000 CR3: 00000001b4b6a003 CR4: 00000000001606f0 [ 26.217902] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.225147] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.232394] Call Trace: [ 26.234957] ? copy_overflow+0x30/0x30 [ 26.238816] ? translate_desc+0x2bd/0x590 [ 26.242943] vhost_update_used_flags+0x379/0x480 [ 26.247677] vhost_vq_init_access+0xca/0x540 [ 26.252061] vhost_net_ioctl+0xee0/0x1920 [ 26.256192] ? vhost_net_stop_vq+0xf0/0xf0 [ 26.260405] ? handle_mm_fault+0x35b/0xb10 [ 26.264614] ? rcu_note_context_switch+0x710/0x710 [ 26.269517] ? __might_sleep+0x95/0x190 [ 26.273463] ? _cond_resched+0x14/0x30 [ 26.277333] ? selinux_file_ioctl+0x444/0x690 [ 26.281804] ? __fget_light+0x2b2/0x3c0 [ 26.285749] ? selinux_capable+0x40/0x40 [ 26.293430] ? trace_event_raw_event_sched_kthread_stop+0x220/0x300 [ 26.299811] ? compat_SyS_futex+0x288/0x380 [ 26.304111] vhost_net_compat_ioctl+0x24/0x30 [ 26.308578] compat_SyS_ioctl+0x151/0x2a30 [ 26.312798] ? do_fast_syscall_32+0x156/0xf9f [ 26.317280] ? vhost_net_ioctl+0x1920/0x1920 [ 26.321662] ? do_ioctl+0x60/0x60 [ 26.325088] do_fast_syscall_32+0x3ec/0xf9f [ 26.329382] ? do_int80_syscall_32+0x9c0/0x9c0 [ 26.333940] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.338676] ? syscall_return_slowpath+0x2ac/0x550 [ 26.343578] ? prepare_exit_to_usermode+0x350/0x350 [ 26.348565] ? sysret32_from_system_call+0x5/0x3c [ 26.353382] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.358198] entry_SYSENTER_compat+0x70/0x7f [ 26.362575] RIP: 0023:0xf7f66c99 [ 26.365907] RSP: 002b:00000000ff8884bc EFLAGS: 00000286 ORIG_RAX: 0000000000000036 [ 26.373586] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000004008af30 [ 26.380825] RDX: 0000000020d7c000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.388065] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.395304] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 26.402545] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 26.409794] Code: 5e 41 5f 5d c3 31 c0 eb a6 e8 b3 22 2d fd 4c 89 ef e8 5b bb 4d fd 4c 89 f8 48 c1 e8 03 c6 04 18 f8 e9 3a ff ff ff e8 96 22 2d fd <0f> 0b e8 8f 22 2d fd 4d 8d 6c 24 ff e9 89 fe ff ff e8 80 22 2d [ 26.428866] RIP: log_write+0x3ca/0x490 RSP: ffff8801d2f6f898 [ 26.434685] ---[ end trace 85da7ed0a9f56a0b ]--- [ 26.439458] Kernel panic - not syncing: Fatal exception [ 26.445264] Dumping ftrace buffer: [ 26.448777] (ftrace buffer empty) [ 26.452455] Kernel Offset: disabled [ 26.456053] Rebooting in 86400 seconds..