[?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. [ 12.628712] audit: type=1400 audit(1515121427.744:6): avc: denied { map } for pid=3453 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.238' (ECDSA) to the list of known hosts. syzkaller login: [ 18.902897] audit: type=1400 audit(1515121434.018:7): avc: denied { map } for pid=3467 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 2018/01/05 03:03:54 parsed 1 programs 2018/01/05 03:03:54 executed programs: 0 [ 19.036631] audit: type=1400 audit(1515121434.152:8): avc: denied { map } for pid=3467 comm="syz-execprog" path="/root/syzkaller-shm795754415" 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 [ 19.227156] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 19.262884] kasan: CONFIG_KASAN_INLINE enabled [ 19.267494] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 19.274821] general protection fault: 0000 [#1] SMP KASAN [ 19.280322] Dumping ftrace buffer: [ 19.283824] (ftrace buffer empty) [ 19.287498] Modules linked in: [ 19.290659] CPU: 0 PID: 3478 Comm: syz-executor0 Not tainted 4.15.0-rc6+ #248 [ 19.297891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.307218] RIP: 0010:native_write_cr4+0x4/0x10 [ 19.311848] RSP: 0018:ffff8801bfe2f068 EFLAGS: 00010093 [ 19.317176] RAX: ffff8801bf828140 RBX: 00000000001606f0 RCX: ffffffff811a3242 [ 19.324408] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 19.331642] RBP: ffff8801bfe2f068 R08: 1ffff10037fc5d69 R09: 0000000000000004 [ 19.338874] R10: ffff8801bfe2efd8 R11: 0000000000000004 R12: 0000000000000093 [ 19.346110] R13: ffff8801bf828140 R14: ffff8801db21d130 R15: ffff8801db21d130 [ 19.353345] FS: 00007fcf29f90700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 19.361536] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.367386] CR2: 0000000000000000 CR3: 0000000006822006 CR4: 00000000001626f0 [ 19.374622] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.381855] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.389086] Call Trace: [ 19.391642] hardware_disable+0x34a/0x4b0 [ 19.395760] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 19.400222] kvm_arch_hardware_disable+0x35/0xd0 [ 19.404939] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 19.409398] hardware_disable_nolock+0x30/0x40 [ 19.413946] on_each_cpu+0xca/0x1b0 [ 19.417538] hardware_disable_all_nolock+0x3e/0x50 [ 19.422433] kvm_put_kvm+0x956/0xdf0 [ 19.426114] ? kvm_clear_guest+0xb0/0xb0 [ 19.430141] ? kvm_irqfd_release+0xd1/0x120 [ 19.434427] ? lock_downgrade+0x980/0x980 [ 19.438549] ? _raw_spin_unlock_irq+0x27/0x70 [ 19.443013] ? kvm_irqfd_release+0xdd/0x120 [ 19.447311] ? kvm_irqfd_release+0xdd/0x120 [ 19.451598] ? kvm_put_kvm+0xdf0/0xdf0 [ 19.455450] kvm_vm_release+0x42/0x50 [ 19.459213] __fput+0x327/0x7e0 [ 19.462462] ? fput+0x140/0x140 [ 19.465708] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 19.471557] ? _raw_spin_unlock_irq+0x27/0x70 [ 19.476026] ____fput+0x15/0x20 [ 19.479270] task_work_run+0x199/0x270 [ 19.483123] ? task_work_cancel+0x210/0x210 [ 19.487412] ? _raw_spin_unlock+0x22/0x30 [ 19.491528] ? switch_task_namespaces+0x87/0xc0 [ 19.496163] do_exit+0x9bb/0x1ad0 [ 19.499583] ? mm_update_next_owner+0x930/0x930 [ 19.504218] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 19.509372] ? __might_sleep+0x95/0x190 [ 19.513312] ? find_held_lock+0x35/0x1d0 [ 19.517343] ? futex_wait+0x402/0x9a0 [ 19.521112] ? lock_downgrade+0x980/0x980 [ 19.525224] ? __unqueue_futex+0x1c0/0x290 [ 19.529423] ? lock_release+0xa40/0xa40 [ 19.533363] ? fault_in_user_writeable+0x90/0x90 [ 19.538085] ? do_raw_spin_trylock+0x190/0x190 [ 19.542631] ? futex_wake+0x680/0x680 [ 19.546394] ? check_noncircular+0x20/0x20 [ 19.550595] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 19.555661] ? futex_wait+0x6a9/0x9a0 [ 19.559438] ? find_held_lock+0x35/0x1d0 [ 19.563472] ? get_signal+0x7ae/0x16c0 [ 19.567324] ? lock_downgrade+0x980/0x980 [ 19.571438] do_group_exit+0x149/0x400 [ 19.575290] ? do_raw_spin_trylock+0x190/0x190 [ 19.579834] ? SyS_exit+0x30/0x30 [ 19.583251] ? _raw_spin_unlock_irq+0x27/0x70 [ 19.587714] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 19.592700] get_signal+0x73f/0x16c0 [ 19.596384] ? ptrace_notify+0x130/0x130 [ 19.600411] ? exit_robust_list+0x240/0x240 [ 19.604696] ? find_held_lock+0x35/0x1d0 [ 19.608730] ? __fget+0x333/0x570 [ 19.612146] ? lock_downgrade+0x980/0x980 [ 19.616258] ? find_held_lock+0x35/0x1d0 [ 19.620286] do_signal+0x90/0x1eb0 [ 19.623792] ? __lock_is_held+0xb6/0x140 [ 19.627822] ? setup_sigcontext+0x7d0/0x7d0 [ 19.632107] ? __fget+0x35c/0x570 [ 19.635528] ? iterate_fd+0x3f0/0x3f0 [ 19.639293] ? up_read+0x1a/0x40 [ 19.642623] ? __do_page_fault+0x3d6/0xc90 [ 19.646828] ? exit_to_usermode_loop+0x8c/0x310 [ 19.651463] exit_to_usermode_loop+0x214/0x310 [ 19.656011] ? ioctl_preallocate+0x2b0/0x2b0 [ 19.660387] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 19.665887] ? selinux_capable+0x40/0x40 [ 19.669927] syscall_return_slowpath+0x490/0x550 [ 19.674658] ? prepare_exit_to_usermode+0x340/0x340 [ 19.679652] ? entry_SYSCALL_64_fastpath+0x6d/0x9a [ 19.684546] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 19.689527] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 19.694252] entry_SYSCALL_64_fastpath+0x98/0x9a [ 19.698971] RIP: 0033:0x452ac9 [ 19.702124] RSP: 002b:00007fcf29f8fce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 19.709803] RAX: fffffffffffffe00 RBX: 000000000071bf80 RCX: 0000000000452ac9 [ 19.717041] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000071bf80 [ 19.724274] RBP: 000000000071bf80 R08: 0000000000000000 R09: 000000000071bf58 [ 19.731507] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 19.738741] R13: 00007ffc3378877f R14: 00007fcf29f909c0 R15: 0000000000000004 [ 19.745990] 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 [ 19.765071] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801bfe2f068 [ 19.771183] ---[ end trace e859311e2748fe5b ]--- [ 19.775899] Kernel panic - not syncing: Fatal exception [ 19.781646] Dumping ftrace buffer: [ 19.785151] (ftrace buffer empty) [ 19.788825] Kernel Offset: disabled [ 19.792415] Rebooting in 86400 seconds..