[....] Starting enhanced syslogd: rsyslogd[ 12.716009] audit: type=1400 audit(1516601813.815:5): avc: denied { syslog } for pid=3506 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: [ 19.046325] audit: type=1400 audit(1516601820.145:6): avc: denied { map } for pid=3644 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 [ 20.210812] audit: type=1400 audit(1516601821.310:7): avc: denied { map } for pid=3655 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts. [ 25.298739] audit: type=1400 audit(1516601826.398:8): avc: denied { map } for pid=3661 comm="syzkaller146811" path="/root/syzkaller146811426" 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 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 25.677440] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 26.003053] audit: type=1400 audit(1516601827.102:9): avc: denied { sys_admin } for pid=3661 comm="syzkaller146811" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 executing program executing program [ 26.031455] audit: type=1400 audit(1516601827.131:10): avc: denied { sys_chroot } for pid=3788 comm="syzkaller146811" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 26.068955] 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 [ 28.364060] WARNING: CPU: 0 PID: 4034 at arch/x86/kvm/x86.c:7305 kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 28.373436] Kernel panic - not syncing: panic_on_warn set ... [ 28.373436] [ 28.380777] CPU: 0 PID: 4034 Comm: syzkaller146811 Not tainted 4.15.0-rc8+ #183 [ 28.388192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.397514] Call Trace: [ 28.400076] dump_stack+0x194/0x257 [ 28.403678] ? arch_local_irq_restore+0x53/0x53 [ 28.408322] ? vsnprintf+0x1ed/0x1900 [ 28.412111] panic+0x1e4/0x41c [ 28.415273] ? refcount_error_report+0x214/0x214 [ 28.420000] ? show_regs_print_info+0x18/0x18 [ 28.424472] ? __warn+0x1c1/0x200 [ 28.427902] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 28.432895] __warn+0x1dc/0x200 [ 28.436147] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 28.441139] report_bug+0x211/0x2d0 [ 28.444743] fixup_bug.part.11+0x37/0x80 [ 28.448777] do_error_trap+0x2d7/0x3e0 [ 28.452636] ? check_noncircular+0x20/0x20 [ 28.456839] ? trace_hardirqs_on+0xd/0x10 [ 28.460959] ? math_error+0x400/0x400 [ 28.464733] ? __lock_is_held+0xb6/0x140 [ 28.468773] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.473601] do_invalid_op+0x1b/0x20 [ 28.477286] invalid_op+0x22/0x40 [ 28.480710] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 28.486303] RSP: 0018:ffff8801c042f580 EFLAGS: 00010293 [ 28.491647] RAX: ffff8801c0b8c4c0 RBX: ffff8801c8e3c000 RCX: ffffffff810df29f [ 28.498898] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801c4290820 [ 28.506139] RBP: ffff8801c042f910 R08: 1ffff10038085e93 R09: 0000000000000001 [ 28.513378] R10: ffff8801c042f930 R11: 0000000000000000 R12: 0000000000000000 [ 28.520618] R13: 1ffff10038085f4d R14: ffff8801c4a53b80 R15: ffff8801c4290600 [ 28.527869] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 28.532863] ? mark_held_locks+0xaf/0x100 [ 28.536982] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 28.542059] ? trace_hardirqs_on+0xd/0x10 [ 28.546183] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 28.550997] ? debug_stats_show+0xd0/0xd0 [ 28.555120] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 28.560196] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.565188] ? debug_object_free+0x2f1/0x5a0 [ 28.569568] ? lockdep_init_map+0x9/0x10 [ 28.573605] ? debug_object_destroy+0x2b0/0x2b0 [ 28.578268] ? __wait_rcu_gp+0x230/0x340 [ 28.582310] ? synchronize_sched.part.64+0xac/0x100 [ 28.587297] ? synchronize_sched_expedited+0xf0/0xf0 [ 28.592370] ? call_rcu_bh+0x20/0x20 [ 28.596057] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 28.601919] ? put_pid+0x183/0x1f0 [ 28.605429] ? task_active_pid_ns+0xd0/0xd0 [ 28.609722] ? __might_sleep+0x95/0x190 [ 28.613675] kvm_vcpu_ioctl+0x64c/0x1010 [ 28.617707] ? kvm_vcpu_ioctl+0x64c/0x1010 [ 28.621915] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 28.627775] ? __fget+0x333/0x570 [ 28.631200] ? lock_downgrade+0x980/0x980 [ 28.635332] ? lock_release+0xa40/0xa40 [ 28.639281] ? __lock_is_held+0xb6/0x140 [ 28.643320] ? __fget+0x35c/0x570 [ 28.646749] ? iterate_fd+0x3f0/0x3f0 [ 28.650536] ? check_noncircular+0x20/0x20 [ 28.654740] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 28.659638] ? selinux_file_ioctl+0x444/0x690 [ 28.664105] ? __fget_light+0x297/0x380 [ 28.668060] kvm_vcpu_compat_ioctl+0x364/0x450 [ 28.672622] ? kvm_vcpu_ioctl+0x1010/0x1010 [ 28.676925] ? security_file_ioctl+0x7d/0xb0 [ 28.681303] ? security_file_ioctl+0x89/0xb0 [ 28.685687] compat_SyS_ioctl+0x151/0x2a30 [ 28.689892] ? lock_downgrade+0x980/0x980 [ 28.694011] ? do_fast_syscall_32+0x156/0xf9d [ 28.698477] ? kvm_vcpu_ioctl+0x1010/0x1010 [ 28.702769] ? do_ioctl+0x60/0x60 [ 28.706201] do_fast_syscall_32+0x3ee/0xf9d [ 28.710497] ? do_raw_spin_trylock+0x190/0x190 [ 28.715053] ? do_int80_syscall_32+0x9d0/0x9d0 [ 28.719614] ? syscall_return_slowpath+0x2ad/0x550 [ 28.724514] ? prepare_exit_to_usermode+0x340/0x340 [ 28.729501] ? sysret32_from_system_call+0x5/0x3b [ 28.734316] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.739137] entry_SYSENTER_compat+0x54/0x63 [ 28.743515] RIP: 0023:0xf7ff8c79 [ 28.746848] RSP: 002b:00000000f7fb01fc EFLAGS: 00000293 ORIG_RAX: 0000000000000036 [ 28.754527] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000000ae80 [ 28.761767] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 28.769007] RBP: 00000000003d0f00 R08: 0000000000000000 R09: 0000000000000000 [ 28.776248] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 28.783488] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 28.791359] Dumping ftrace buffer: [ 28.794944] (ftrace buffer empty) [ 28.798624] Kernel Offset: disabled [ 28.802225] Rebooting in 86400 seconds..