[....] Starting enhanced syslogd: rsyslogd[ 10.786602] audit: type=1400 audit(1514678397.938:5): avc: denied { syslog } for pid=2992 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: [ 16.810951] audit: type=1400 audit(1514678403.962:6): avc: denied { map } for pid=3133 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. [ 28.390303] audit: type=1400 audit(1514678415.542:7): avc: denied { map } for pid=3149 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 2017/12/31 00:00:15 parsed 1 programs 2017/12/31 00:00:15 executed programs: 0 [ 28.510854] audit: type=1400 audit(1514678415.662:8): avc: denied { map } for pid=3149 comm="syz-execprog" path="/root/syzkaller-shm177268952" 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 [ 28.577233] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 30.445225] WARNING: CPU: 1 PID: 3539 at arch/x86/kvm/x86.c:7377 kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 30.454658] Kernel panic - not syncing: panic_on_warn set ... [ 30.454658] [ 30.462010] CPU: 1 PID: 3539 Comm: syz-executor6 Not tainted 4.15.0-rc4-mm1+ #49 [ 30.469531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.478876] Call Trace: [ 30.481457] dump_stack+0x194/0x257 [ 30.485084] ? arch_local_irq_restore+0x53/0x53 [ 30.489749] ? vsnprintf+0x1ed/0x1900 [ 30.493550] panic+0x1e4/0x41c [ 30.496735] ? refcount_error_report+0x214/0x214 [ 30.501483] ? show_regs_print_info+0x18/0x18 [ 30.505978] ? __warn+0x1c1/0x200 [ 30.509426] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 30.514427] __warn+0x1dc/0x200 [ 30.517702] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 30.522711] report_bug+0x211/0x2d0 [ 30.526328] fixup_bug.part.11+0x37/0x80 [ 30.530363] do_error_trap+0x2d7/0x3e0 [ 30.534223] ? math_error+0x400/0x400 [ 30.537997] ? __lock_is_held+0xb6/0x140 [ 30.542044] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.546863] do_invalid_op+0x1b/0x20 [ 30.550545] invalid_op+0x22/0x40 [ 30.553970] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 30.559559] RSP: 0018:ffff8801bde6f6b0 EFLAGS: 00010293 [ 30.564890] RAX: ffff8801d8924040 RBX: ffff8801d95fd000 RCX: ffffffff810df6bf [ 30.572127] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801be7c0760 [ 30.579367] RBP: ffff8801bde6fa40 R08: 1ffff10037cf8b83 R09: 0000000000000001 [ 30.586607] R10: ffff8801bde6f690 R11: 0000000000000000 R12: 0000000000000000 [ 30.593846] R13: ffff8801d9207f80 R14: ffff8801be7c0540 R15: ffff8801be7c0540 [ 30.601107] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 30.606100] ? trace_hardirqs_off+0xd/0x10 [ 30.610303] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 30.615378] ? depot_save_stack+0x2ca/0x460 [ 30.619673] ? put_pid+0x176/0x1f0 [ 30.623183] ? save_stack+0xa3/0xd0 [ 30.626783] ? save_stack+0x43/0xd0 [ 30.630379] ? kasan_slab_free+0x71/0xc0 [ 30.634406] ? kmem_cache_free+0x83/0x2a0 [ 30.638525] ? kvm_vcpu_ioctl+0xd5f/0xff0 [ 30.642645] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 30.647464] ? debug_check_no_obj_freed+0x611/0xf1f [ 30.652452] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.657439] ? check_noncircular+0x20/0x20 [ 30.661644] ? print_irqtrace_events+0x270/0x270 [ 30.666375] ? free_obj_work+0x690/0x690 [ 30.670418] ? refcount_sub_and_test+0x115/0x1b0 [ 30.675143] ? refcount_inc+0x50/0x50 [ 30.678916] ? put_pid+0x176/0x1f0 [ 30.682431] ? refcount_dec_and_test+0x1a/0x20 [ 30.686986] ? put_pid_ns+0xa6/0xc0 [ 30.690593] ? put_pid+0x183/0x1f0 [ 30.694105] ? task_active_pid_ns+0xd0/0xd0 [ 30.698398] ? __might_sleep+0x95/0x190 [ 30.702435] kvm_vcpu_ioctl+0x6f1/0xff0 [ 30.706382] ? kvm_vcpu_ioctl+0x6f1/0xff0 [ 30.710502] ? kvm_vcpu_fault+0x520/0x520 [ 30.714629] ? find_held_lock+0x35/0x1d0 [ 30.718669] ? __fget+0x333/0x570 [ 30.722092] ? lock_downgrade+0x980/0x980 [ 30.726216] ? lock_release+0xa40/0xa40 [ 30.730169] ? __lock_is_held+0xb6/0x140 [ 30.734215] ? __fget+0x35c/0x570 [ 30.737646] ? iterate_fd+0x3f0/0x3f0 [ 30.741426] ? finish_task_switch+0x1d3/0x740 [ 30.745901] ? kvm_vcpu_fault+0x520/0x520 [ 30.750023] do_vfs_ioctl+0x1b1/0x1520 [ 30.753886] ? ioctl_preallocate+0x2b0/0x2b0 [ 30.758271] ? selinux_capable+0x40/0x40 [ 30.762301] ? __lockdep_init_map+0x410/0x650 [ 30.766773] ? syscall_return_slowpath+0x2ad/0x550 [ 30.771680] ? security_file_ioctl+0x89/0xb0 [ 30.776060] SyS_ioctl+0x8f/0xc0 [ 30.779402] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 30.784126] RIP: 0033:0x452ac9 [ 30.787289] RSP: 002b:00007f0bb569ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 [ 30.794964] RAX: ffffffffffffffda RBX: 00007f0bb569f700 RCX: 0000000000452ac9 [ 30.802201] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000004 [ 30.809438] RBP: 00007ffcad16d490 R08: 0000000000000000 R09: 0000000000000000 [ 30.816673] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 [ 30.823911] R13: 00007ffcad16d40f R14: 00007f0bb569f9c0 R15: 0000000000000008 [ 30.831848] Dumping ftrace buffer: [ 30.835447] (ftrace buffer empty) [ 30.839124] Kernel Offset: disabled [ 30.842720] Rebooting in 86400 seconds..