[?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. [ 11.813906] sshd (3066) used greatest stack depth: 14944 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.678492] audit: type=1400 audit(1514670818.109:6): avc: denied { map } for pid=3132 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 78.050260] audit: type=1400 audit(1514670880.480:7): avc: denied { map } for pid=3151 comm="syzkaller840308" path="/root/syzkaller840308713" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 78.089372] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 81.276897] WARNING: CPU: 1 PID: 3191 at arch/x86/kvm/x86.c:7377 kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 81.286315] Kernel panic - not syncing: panic_on_warn set ... [ 81.286315] [ 81.293669] CPU: 1 PID: 3191 Comm: syzkaller840308 Not tainted 4.15.0-rc4-mm1+ #49 [ 81.301362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.310699] Call Trace: [ 81.313264] dump_stack+0x194/0x257 [ 81.316863] ? arch_local_irq_restore+0x53/0x53 [ 81.321506] ? vsnprintf+0x1ed/0x1900 [ 81.325283] panic+0x1e4/0x41c [ 81.328454] ? refcount_error_report+0x214/0x214 [ 81.333176] ? show_regs_print_info+0x18/0x18 [ 81.337650] ? __warn+0x1c1/0x200 [ 81.341076] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 81.346059] __warn+0x1dc/0x200 [ 81.349310] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 81.354297] report_bug+0x211/0x2d0 [ 81.357901] fixup_bug.part.11+0x37/0x80 [ 81.361934] do_error_trap+0x2d7/0x3e0 [ 81.365796] ? trace_hardirqs_on+0xd/0x10 [ 81.369915] ? math_error+0x400/0x400 [ 81.373686] ? __lock_is_held+0xb6/0x140 [ 81.378248] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 81.385026] do_invalid_op+0x1b/0x20 [ 81.388707] invalid_op+0x22/0x40 [ 81.392132] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 81.397721] RSP: 0018:ffff8801c55776b0 EFLAGS: 00010293 [ 81.403053] RAX: ffff8801c79d6380 RBX: ffff8801cf352000 RCX: ffffffff810df6bf [ 81.410291] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801cea19960 [ 81.417528] RBP: ffff8801c5577a40 R08: 1ffff10039d43dc3 R09: 0000000000000001 [ 81.425903] R10: ffff8801c5577690 R11: 0000000000000000 R12: 0000000000000000 [ 81.433835] R13: ffff8801d6697780 R14: ffff8801cea19740 R15: ffff8801cea19740 [ 81.441087] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 81.446084] ? mark_held_locks+0xaf/0x100 [ 81.450212] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 81.455286] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 81.460279] ? trace_hardirqs_on+0xd/0x10 [ 81.464400] ? free_object+0x150/0x230 [ 81.468259] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 81.473069] ? debug_stats_show+0xd0/0xd0 [ 81.477184] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 81.482267] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 81.487258] ? debug_object_free+0x2f1/0x5a0 [ 81.491632] ? lockdep_init_map+0x9/0x10 [ 81.495665] ? debug_object_destroy+0x2b0/0x2b0 [ 81.500314] ? __wait_rcu_gp+0x230/0x340 [ 81.504356] ? synchronize_sched.part.65+0xac/0x100 [ 81.509340] ? synchronize_sched_expedited+0xf0/0xf0 [ 81.514419] ? call_rcu_bh+0x20/0x20 [ 81.518104] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 81.523959] ? put_pid+0x183/0x1f0 [ 81.527992] ? task_active_pid_ns+0xd0/0xd0 [ 81.532293] ? __might_sleep+0x95/0x190 [ 81.536241] kvm_vcpu_ioctl+0x6f1/0xff0 [ 81.540183] ? kvm_vcpu_ioctl+0x6f1/0xff0 [ 81.544302] ? kvm_vcpu_fault+0x520/0x520 [ 81.548430] ? find_held_lock+0x35/0x1d0 [ 81.552475] ? __fget+0x333/0x570 [ 81.555905] ? lock_downgrade+0x980/0x980 [ 81.560033] ? lock_release+0xa40/0xa40 [ 81.563986] ? __lock_is_held+0xb6/0x140 [ 81.568034] ? __fget+0x35c/0x570 [ 81.571465] ? iterate_fd+0x3f0/0x3f0 [ 81.575237] ? get_unused_fd_flags+0x190/0x190 [ 81.579795] ? may_open_dev+0xe0/0xe0 [ 81.583574] ? kvm_vcpu_fault+0x520/0x520 [ 81.587688] do_vfs_ioctl+0x1b1/0x1520 [ 81.591550] ? ioctl_preallocate+0x2b0/0x2b0 [ 81.595931] ? selinux_capable+0x40/0x40 [ 81.599975] ? syscall_return_slowpath+0x2ad/0x550 [ 81.604888] ? security_file_ioctl+0x89/0xb0 [ 81.609270] SyS_ioctl+0x8f/0xc0 [ 81.612614] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 81.617337] RIP: 0033:0x445a19 [ 81.620494] RSP: 002b:00007fc06e3f6da8 EFLAGS: 00000297 ORIG_RAX: 0000000000000010 [ 81.628171] RAX: ffffffffffffffda RBX: 00000000006dac6c RCX: 0000000000445a19 [ 81.635411] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000126 [ 81.642650] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 81.649889] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dac68 [ 81.657133] R13: 6d766b2f7665642f R14: 00007fc06e3f79c0 R15: 0000000000000009 [ 81.665073] Dumping ftrace buffer: [ 81.668757] (ftrace buffer empty) [ 81.672448] Kernel Offset: disabled [ 81.676055] Rebooting in 86400 seconds..