[....] Starting enhanced syslogd: rsyslogd[ 10.371352] audit: type=1400 audit(1514651608.290:5): avc: denied { syslog } for pid=2990 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: [ 16.233889] audit: type=1400 audit(1514651614.152:6): avc: denied { map } for pid=3131 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 '10.128.0.12' (ECDSA) to the list of known hosts. executing program [ 27.589412] audit: type=1400 audit(1514651625.508:7): avc: denied { map } for pid=3147 comm="syzkaller094983" path="/root/syzkaller094983416" 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 [ 27.624571] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 27.640765] kasan: CONFIG_KASAN_INLINE enabled [ 27.645377] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.652711] general protection fault: 0000 [#1] SMP KASAN [ 27.658217] Dumping ftrace buffer: [ 27.661720] (ftrace buffer empty) [ 27.665396] Modules linked in: [ 27.668558] CPU: 1 PID: 3147 Comm: syzkaller094983 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 27.677098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.686434] RIP: 0010:native_write_cr4+0x4/0x10 [ 27.691064] RSP: 0018:ffff8801c22f75a0 EFLAGS: 00010093 [ 27.696392] RAX: ffff8801ca2d4040 RBX: 00000000001606e0 RCX: ffffffff811a47f2 [ 27.703628] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 27.711749] RBP: ffff8801c22f75a0 R08: 1ffff1003845ee0f R09: 0000000000000004 [ 27.718995] R10: ffff8801c22f7510 R11: 0000000000000004 R12: 0000000000000093 [ 27.726420] R13: ffff8801ca2d4040 R14: ffff8801db31a130 R15: ffff8801db31a130 [ 27.733661] FS: 00000000017a3880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 27.741854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.747702] CR2: 0000000000000000 CR3: 0000000006422006 CR4: 00000000001626e0 [ 27.754940] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.762182] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.769426] Call Trace: [ 27.771990] hardware_disable+0x34a/0x4b0 [ 27.776144] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 27.780609] kvm_arch_hardware_disable+0x35/0xd0 [ 27.785333] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 27.789795] hardware_disable_nolock+0x30/0x40 [ 27.794344] on_each_cpu+0xca/0x1b0 [ 27.797936] hardware_disable_all_nolock+0x3e/0x50 [ 27.802838] kvm_put_kvm+0x956/0xde0 [ 27.806524] ? kvm_clear_guest+0xb0/0xb0 [ 27.810553] ? kvm_irqfd_release+0xd1/0x120 [ 27.814843] ? lock_downgrade+0x980/0x980 [ 27.818968] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.823439] ? kvm_irqfd_release+0xdd/0x120 [ 27.827725] ? kvm_irqfd_release+0xdd/0x120 [ 27.832019] ? kvm_put_kvm+0xde0/0xde0 [ 27.835872] kvm_vm_release+0x42/0x50 [ 27.839638] __fput+0x327/0x7e0 [ 27.842895] ? fput+0x140/0x140 [ 27.846142] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 27.851996] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.856466] ____fput+0x15/0x20 [ 27.859710] task_work_run+0x199/0x270 [ 27.863566] ? task_work_cancel+0x210/0x210 [ 27.867854] ? _raw_spin_unlock+0x22/0x30 [ 27.871968] ? switch_task_namespaces+0x87/0xc0 [ 27.876618] do_exit+0x9bb/0x1ad0 [ 27.880036] ? kvm_vcpu_fault+0x520/0x520 [ 27.884154] ? mm_update_next_owner+0x930/0x930 [ 27.888792] ? save_stack+0xa3/0xd0 [ 27.892382] ? save_stack+0x43/0xd0 [ 27.895973] ? kasan_kmalloc+0xad/0xe0 [ 27.899832] ? __kmalloc_track_caller+0x15e/0x760 [ 27.904640] ? kmemdup+0x24/0x50 [ 27.907973] ? selinux_cred_prepare+0x43/0xa0 [ 27.912434] ? security_prepare_creds+0x7d/0xb0 [ 27.917069] ? prepare_creds+0x2b1/0x360 [ 27.921103] ? SyS_setreuid+0xd5/0x700 [ 27.925047] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 27.929948] ? save_stack+0xa3/0xd0 [ 27.933547] ? find_held_lock+0x35/0x1d0 [ 27.937593] ? map_id_range_down+0x182/0x400 [ 27.941983] ? __put_user_ns+0x60/0x60 [ 27.945843] ? kvm_vcpu_fault+0x520/0x520 [ 27.949960] ? do_vfs_ioctl+0x486/0x1520 [ 27.953988] ? ioctl_preallocate+0x2b0/0x2b0 [ 27.958387] ? selinux_capable+0x40/0x40 [ 27.962417] ? security_prepare_creds+0x89/0xb0 [ 27.967071] do_group_exit+0x149/0x400 [ 27.970930] ? SyS_exit+0x30/0x30 [ 27.974365] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.979348] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.984071] SyS_exit_group+0x1d/0x20 [ 27.987851] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 27.992569] RIP: 0033:0x43ec38 [ 27.995723] RSP: 002b:00007ffec0ea0328 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.003393] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ec38 [ 28.010627] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 28.017875] RBP: 00000000006ca018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 28.025111] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401960 [ 28.032353] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 28.039613] 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 [ 28.058692] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c22f75a0 [ 28.064813] ---[ end trace 1bd56b1e9db396e0 ]--- [ 28.069547] Kernel panic - not syncing: Fatal exception [ 28.075421] Dumping ftrace buffer: [ 28.078927] (ftrace buffer empty) [ 28.082604] Kernel Offset: disabled [ 28.086211] Rebooting in 86400 seconds..