[?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. [ 11.643408] audit: type=1400 audit(1515115896.942:6): avc: denied { map } for pid=3446 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 '10.128.0.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 17.772102] audit: type=1400 audit(1515115903.070:7): avc: denied { map } for pid=3460 comm="syzkaller172527" path="/root/syzkaller172527385" 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 [ 17.805488] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 17.853086] kasan: CONFIG_KASAN_INLINE enabled [ 17.857697] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 17.865072] general protection fault: 0000 [#1] SMP KASAN [ 17.870574] Dumping ftrace buffer: [ 17.874077] (ftrace buffer empty) [ 17.877759] Modules linked in: [ 17.880920] CPU: 0 PID: 3462 Comm: syzkaller172527 Not tainted 4.15.0-rc6-next-20180103+ #87 [ 17.889455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.898779] RIP: 0010:native_write_cr4+0x4/0x10 [ 17.903409] RSP: 0018:ffff8801c08a7860 EFLAGS: 00010093 [ 17.908736] RAX: ffff8801c09145c0 RBX: 00000000001606f0 RCX: ffffffff8115d7c2 [ 17.915970] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 17.923205] RBP: ffff8801c08a7860 R08: ffffffff8105f787 R09: 0000000000000004 [ 17.930447] R10: ffff8801c08a7878 R11: 0000000000000001 R12: 0000000000000093 [ 17.937683] R13: ffff8801c09145c0 R14: ffff8801db41a130 R15: ffff8801db41a130 [ 17.944920] FS: 00007f9d9516c700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 17.953108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.958952] CR2: 0000000020e2d000 CR3: 0000000005e22004 CR4: 00000000001626f0 [ 17.966196] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.973431] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.980666] Call Trace: [ 17.983223] hardware_disable+0x34a/0x4b0 [ 17.987336] ? smp_call_function_many+0x76/0x6e0 [ 17.992058] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 17.996560] kvm_arch_hardware_disable+0x35/0xd0 [ 18.001280] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 18.005738] hardware_disable_nolock+0x30/0x40 [ 18.010284] on_each_cpu+0xca/0x1b0 [ 18.013876] hardware_disable_all_nolock+0x3e/0x50 [ 18.018771] kvm_put_kvm+0x69c/0xa70 [ 18.022453] ? kvm_put_kvm+0xa70/0xa70 [ 18.026305] kvm_vm_release+0x42/0x50 [ 18.030071] __fput+0x291/0x6e0 [ 18.033320] ____fput+0x15/0x20 [ 18.036565] task_work_run+0x122/0x1a0 [ 18.040421] do_exit+0x7f4/0x2da0 [ 18.043841] ? mm_update_next_owner+0x690/0x690 [ 18.048474] ? find_held_lock+0x35/0x1e0 [ 18.052501] ? get_signal+0x644/0x1460 [ 18.056353] ? lock_downgrade+0x860/0x860 [ 18.060468] do_group_exit+0x108/0x320 [ 18.064321] get_signal+0x5e9/0x1460 [ 18.068023] do_signal+0x7f/0x1980 [ 18.071536] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.076691] ? setup_sigcontext+0x7d0/0x7d0 [ 18.080979] ? check_noncircular+0x20/0x20 [ 18.085183] ? SyS_futex+0x1fd/0x2b0 [ 18.088864] ? exit_to_usermode_loop+0x3f/0x210 [ 18.093500] exit_to_usermode_loop+0x1aa/0x210 [ 18.098047] syscall_return_slowpath+0x383/0x430 [ 18.102769] entry_SYSCALL_64_fastpath+0x98/0x9a [ 18.107490] RIP: 0033:0x4485c9 [ 18.110644] RSP: 002b:00007f9d9516bda8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 18.118316] RAX: fffffffffffffe00 RBX: 00000000006ddc3c RCX: 00000000004485c9 [ 18.125552] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000006ddc3c [ 18.132785] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 18.140025] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc38 [ 18.147264] R13: 6d766b2f7665642f R14: 00007f9d9516c9c0 R15: 0000000000000001 [ 18.154503] 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 [ 18.173556] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801c08a7860 [ 18.179666] ---[ end trace 3e81c77ec8f33746 ]--- [ 18.184383] Kernel panic - not syncing: Fatal exception [ 18.190146] Dumping ftrace buffer: [ 18.193654] (ftrace buffer empty) [ 18.197329] Kernel Offset: disabled [ 18.200919] Rebooting in 86400 seconds..