[....] Starting enhanced syslogd: rsyslogd[ 11.724051] audit: type=1400 audit(1515020109.785:5): avc: denied { syslog } for pid=3345 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: [ 16.086129] audit: type=1400 audit(1515020114.147:6): avc: denied { map } for pid=3483 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 '10.128.0.45' (ECDSA) to the list of known hosts. [ 22.236405] audit: type=1400 audit(1515020120.298:7): avc: denied { map } for pid=3497 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 2018/01/03 22:55:20 parsed 1 programs 2018/01/03 22:55:20 executed programs: 0 [ 22.369410] audit: type=1400 audit(1515020120.431:8): avc: denied { map } for pid=3497 comm="syz-execprog" path="/root/syzkaller-shm014005695" 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 [ 22.426691] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 22.453712] kasan: CONFIG_KASAN_INLINE enabled [ 22.458341] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.465673] general protection fault: 0000 [#1] SMP KASAN [ 22.471177] Dumping ftrace buffer: [ 22.474693] (ftrace buffer empty) [ 22.478370] Modules linked in: [ 22.481530] CPU: 1 PID: 3508 Comm: syz-executor0 Not tainted 4.15.0-rc6-next-20180103+ #87 [ 22.490330] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.499662] RIP: 0010:native_write_cr4+0x4/0x10 [ 22.504294] RSP: 0018:ffff8801c08d7860 EFLAGS: 00010093 [ 22.509622] RAX: ffff8801c05f6640 RBX: 00000000001606e0 RCX: ffffffff8115d7c2 [ 22.516858] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 22.524097] RBP: ffff8801c08d7860 R08: ffffffff8105f787 R09: 0000000000000004 [ 22.531334] R10: ffff8801c08d7878 R11: 0000000000000001 R12: 0000000000000093 [ 22.538570] R13: ffff8801c05f6640 R14: ffff8801db51a130 R15: ffff8801db51a130 [ 22.545811] FS: 00007fd39e40a700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 22.554017] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.559878] CR2: 0000000000000000 CR3: 0000000005e22003 CR4: 00000000001626e0 [ 22.567117] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.574361] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.581604] Call Trace: [ 22.584161] hardware_disable+0x34a/0x4b0 [ 22.588276] ? smp_call_function_many+0x76/0x6e0 [ 22.593004] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 22.597471] kvm_arch_hardware_disable+0x35/0xd0 [ 22.602201] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 22.606665] hardware_disable_nolock+0x30/0x40 [ 22.611220] on_each_cpu+0xca/0x1b0 [ 22.614819] hardware_disable_all_nolock+0x3e/0x50 [ 22.619718] kvm_put_kvm+0x69c/0xa70 [ 22.623403] ? kvm_put_kvm+0xa70/0xa70 [ 22.627259] kvm_vm_release+0x42/0x50 [ 22.631030] __fput+0x291/0x6e0 [ 22.634283] ____fput+0x15/0x20 [ 22.637933] task_work_run+0x122/0x1a0 [ 22.642961] do_exit+0x7f4/0x2da0 [ 22.646393] ? mm_update_next_owner+0x690/0x690 [ 22.651034] ? find_held_lock+0x35/0x1e0 [ 22.655074] ? get_signal+0x644/0x1460 [ 22.658930] ? lock_downgrade+0x860/0x860 [ 22.663049] do_group_exit+0x108/0x320 [ 22.666904] get_signal+0x5e9/0x1460 [ 22.670597] do_signal+0x7f/0x1980 [ 22.674110] ? find_held_lock+0x35/0x1e0 [ 22.678140] ? setup_sigcontext+0x7d0/0x7d0 [ 22.682430] ? kvm_set_memory_region+0x50/0x50 [ 22.686992] ? do_vfs_ioctl+0x439/0xfe0 [ 22.690936] ? selinux_file_ioctl+0x354/0x540 [ 22.695399] ? lock_downgrade+0x860/0x860 [ 22.699521] ? SyS_futex+0x1fd/0x2b0 [ 22.703207] ? exit_to_usermode_loop+0x3f/0x210 [ 22.707846] exit_to_usermode_loop+0x1aa/0x210 [ 22.712398] syscall_return_slowpath+0x383/0x430 [ 22.717124] entry_SYSCALL_64_fastpath+0x98/0x9a [ 22.722375] RIP: 0033:0x452ac9 [ 22.725531] RSP: 002b:00007fd39e409ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 22.733205] RAX: fffffffffffffe00 RBX: 000000000071c038 RCX: 0000000000452ac9 [ 22.740444] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000071c038 [ 22.747686] RBP: 000000000071c038 R08: 0000000000000000 R09: 000000000071c010 [ 22.754924] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 22.762160] R13: 00007fff5e97a2df R14: 00007fd39e40a9c0 R15: 0000000000000008 [ 22.769406] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 22.788500] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c08d7860 [ 22.794618] ---[ end trace 8b49702f4494f66c ]--- [ 22.799343] Kernel panic - not syncing: Fatal exception [ 22.805278] Dumping ftrace buffer: [ 22.808799] (ftrace buffer empty) [ 22.812476] Kernel Offset: disabled [ 22.816069] Rebooting in 86400 seconds..