[....] Starting enhanced syslogd: rsyslogd[ 11.405899] audit: type=1400 audit(1514423737.557:5): avc: denied { syslog } for pid=2998 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 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.168930] audit: type=1400 audit(1514423743.320:6): avc: denied { map } for pid=3138 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 '10.128.15.245' (ECDSA) to the list of known hosts. [ 23.368651] audit: type=1400 audit(1514423749.520:7): avc: denied { map } for pid=3152 comm="syzkaller732450" path="/root/syzkaller732450886" 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 [ 23.394671] audit: type=1400 audit(1514423749.520:8): avc: denied { sys_admin } for pid=3152 comm="syzkaller732450" 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 [ 23.420473] audit: type=1400 audit(1514423749.572:9): avc: denied { sys_chroot } for pid=3153 comm="syzkaller732450" 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 [ 23.457436] 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 [ 37.050136] WARNING: CPU: 1 PID: 4486 at arch/x86/kvm/x86.c:7377 kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 37.059530] Kernel panic - not syncing: panic_on_warn set ... [ 37.059530] [ 37.066865] CPU: 1 PID: 4486 Comm: syzkaller732450 Not tainted 4.15.0-rc4-mm1+ #49 [ 37.074538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.083856] Call Trace: [ 37.086416] dump_stack+0x194/0x257 [ 37.090013] ? arch_local_irq_restore+0x53/0x53 [ 37.094653] ? vsnprintf+0x1ed/0x1900 [ 37.098424] panic+0x1e4/0x41c [ 37.101589] ? refcount_error_report+0x214/0x214 [ 37.106311] ? show_regs_print_info+0x18/0x18 [ 37.110778] ? __warn+0x1c1/0x200 [ 37.114202] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 37.119188] __warn+0x1dc/0x200 [ 37.122437] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 37.127422] report_bug+0x211/0x2d0 [ 37.131023] fixup_bug.part.11+0x37/0x80 [ 37.135052] do_error_trap+0x2d7/0x3e0 [ 37.138911] ? trace_hardirqs_on+0xd/0x10 [ 37.143028] ? math_error+0x400/0x400 [ 37.146798] ? __lock_is_held+0xb6/0x140 [ 37.150836] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.155650] do_invalid_op+0x1b/0x20 [ 37.159329] invalid_op+0x22/0x40 [ 37.162748] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 37.168333] RSP: 0018:ffff8801ce17f6b0 EFLAGS: 00010293 [ 37.173662] RAX: ffff8801d2b08580 RBX: ffff8801d5551000 RCX: ffffffff810df6bf [ 37.180905] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d1230ce0 [ 37.188140] RBP: ffff8801ce17fa40 R08: 1ffff1003a246c33 R09: 0000000000000001 [ 37.195375] R10: ffff8801ce17f690 R11: 0000000000000000 R12: 0000000000000000 [ 37.202612] R13: ffff8801d7bca000 R14: ffff8801d1230ac0 R15: ffff8801d1230ac0 [ 37.209956] ? kvm_arch_vcpu_ioctl_run+0x1cf/0x5cb0 [ 37.214949] ? mark_held_locks+0xaf/0x100 [ 37.219067] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 37.224142] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.229129] ? trace_hardirqs_on+0xd/0x10 [ 37.233249] ? free_object+0x150/0x230 [ 37.237102] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 37.241910] ? debug_stats_show+0xd0/0xd0 [ 37.246021] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 37.251092] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.256078] ? debug_object_free+0x2f1/0x5a0 [ 37.260449] ? lockdep_init_map+0x9/0x10 [ 37.264523] ? debug_object_destroy+0x2b0/0x2b0 [ 37.269167] ? __wait_rcu_gp+0x230/0x340 [ 37.273203] ? synchronize_sched.part.65+0xac/0x100 [ 37.278187] ? synchronize_sched_expedited+0xf0/0xf0 [ 37.283255] ? call_rcu_bh+0x20/0x20 [ 37.286937] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 37.292798] ? put_pid+0x183/0x1f0 [ 37.296310] ? task_active_pid_ns+0xd0/0xd0 [ 37.300600] ? __might_sleep+0x95/0x190 [ 37.304548] kvm_vcpu_ioctl+0x6f1/0xff0 [ 37.308486] ? kvm_vcpu_ioctl+0x6f1/0xff0 [ 37.312614] ? kvm_vcpu_fault+0x520/0x520 [ 37.316734] ? find_held_lock+0x35/0x1d0 [ 37.320768] ? __fget+0x333/0x570 [ 37.324194] ? lock_downgrade+0x980/0x980 [ 37.328311] ? lock_release+0xa40/0xa40 [ 37.332254] ? __lock_is_held+0xb6/0x140 [ 37.336292] ? __fget+0x35c/0x570 [ 37.339717] ? iterate_fd+0x3f0/0x3f0 [ 37.343495] ? kvm_vcpu_fault+0x520/0x520 [ 37.347616] do_vfs_ioctl+0x1b1/0x1520 [ 37.351477] ? ioctl_preallocate+0x2b0/0x2b0 [ 37.355869] ? selinux_capable+0x40/0x40 [ 37.359907] ? SyS_futex+0x269/0x390 [ 37.363601] ? security_file_ioctl+0x89/0xb0 [ 37.367982] SyS_ioctl+0x8f/0xc0 [ 37.371321] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 37.376042] RIP: 0033:0x447399 [ 37.379197] RSP: 002b:00007f77ea073ce8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 37.386870] RAX: ffffffffffffffda RBX: 00000000006f003c RCX: 0000000000447399 [ 37.394109] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 37.401346] RBP: 00000000006f0038 R08: 0000000000000000 R09: 0000000000000000 [ 37.408587] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 [ 37.415823] R13: 00000000007ffd1f R14: 00007f77ea0749c0 R15: 0000000000000009 [ 37.423702] Dumping ftrace buffer: [ 37.427300] (ftrace buffer empty) [ 37.430978] Kernel Offset: disabled [ 37.434575] Rebooting in 86400 seconds..