[....] Starting enhanced syslogd: rsyslogd[ 12.829815] audit: type=1400 audit(1515915698.610:5): avc: denied { syslog } for pid=3496 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: [ 19.025917] audit: type=1400 audit(1515915704.806:6): avc: denied { map } for pid=3635 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 '10.128.15.218' (ECDSA) to the list of known hosts. [ 25.232241] audit: type=1400 audit(1515915711.012:7): avc: denied { map } for pid=3649 comm="syzkaller321988" path="/root/syzkaller321988225" 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 [ 25.432538] 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 [ 34.687883] WARNING: CPU: 0 PID: 3687 at arch/x86/kvm/x86.c:7305 kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 34.697277] Kernel panic - not syncing: panic_on_warn set ... [ 34.697277] [ 34.704644] CPU: 0 PID: 3687 Comm: syzkaller321988 Not tainted 4.15.0-rc7+ #261 [ 34.712082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.721429] Call Trace: [ 34.724016] dump_stack+0x194/0x257 [ 34.727651] ? arch_local_irq_restore+0x53/0x53 [ 34.732333] ? vsnprintf+0x1ed/0x1900 executing program [ 34.736135] panic+0x1e4/0x41c [ 34.739320] ? refcount_error_report+0x214/0x214 [ 34.744918] ? show_regs_print_info+0x18/0x18 [ 34.749590] ? __warn+0x1c1/0x200 [ 34.753064] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 34.758069] __warn+0x1dc/0x200 [ 34.761344] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 34.766357] report_bug+0x211/0x2d0 [ 34.769988] fixup_bug.part.11+0x37/0x80 [ 34.774044] do_error_trap+0x2d7/0x3e0 [ 34.777926] ? trace_hardirqs_on+0xd/0x10 [ 34.782074] ? math_error+0x400/0x400 [ 34.785869] ? __lock_is_held+0xb6/0x140 [ 34.789935] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.794776] do_invalid_op+0x1b/0x20 [ 34.798479] invalid_op+0x22/0x40 [ 34.801933] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 34.807541] RSP: 0018:ffff8801d957f6b0 EFLAGS: 00010293 [ 34.812903] RAX: ffff8801bbe9a500 RBX: ffff8801c281e000 RCX: ffffffff810df29f [ 34.820168] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801befa84e0 [ 34.828123] RBP: ffff8801d957fa40 R08: 1ffff1003b2afeb8 R09: 0000000000000001 executing program [ 34.835384] R10: ffff8801d957fa58 R11: 0000000000000000 R12: 0000000000000000 [ 34.842647] R13: 1ffff1003b2aff72 R14: ffff8801bc96a080 R15: ffff8801befa82c0 [ 34.849935] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 34.854961] ? mark_held_locks+0xaf/0x100 [ 34.859108] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 34.864210] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.869230] ? trace_hardirqs_on+0xd/0x10 [ 34.873373] ? free_object+0x150/0x230 [ 34.877250] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 34.882080] ? debug_stats_show+0xd0/0xd0 executing program [ 34.886218] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 34.891318] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.896340] ? debug_object_free+0x2f1/0x5a0 [ 34.900742] ? lockdep_init_map+0x9/0x10 [ 34.904797] ? debug_object_destroy+0x2b0/0x2b0 [ 34.909476] ? __wait_rcu_gp+0x230/0x340 [ 34.913551] ? synchronize_sched.part.64+0xac/0x100 [ 34.918559] ? synchronize_sched_expedited+0xf0/0xf0 [ 34.923654] ? call_rcu_bh+0x20/0x20 [ 34.927364] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 34.933245] ? put_pid+0x183/0x1f0 [ 34.936781] ? task_active_pid_ns+0xd0/0xd0 [ 34.941183] ? __might_sleep+0x95/0x190 [ 34.946874] kvm_vcpu_ioctl+0x64c/0x1010 [ 34.951609] ? kvm_vcpu_ioctl+0x64c/0x1010 [ 34.955821] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 34.962300] ? find_held_lock+0x35/0x1d0 [ 34.967873] ? __fget+0x333/0x570 [ 34.971820] ? lock_downgrade+0x980/0x980 [ 34.975941] ? find_held_lock+0x35/0x1d0 [ 34.979978] ? lock_release+0xa40/0xa40 [ 34.985404] ? __lock_is_held+0xb6/0x140 [ 34.991054] ? __fget+0x35c/0x570 [ 34.995893] ? iterate_fd+0x3f0/0x3f0 [ 35.001007] ? lock_release+0xa40/0xa40 [ 35.006437] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 35.013078] ? __do_page_fault+0x3d6/0xc90 [ 35.017291] ? __getnstimeofday64+0x143/0x470 [ 35.021776] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 35.027645] do_vfs_ioctl+0x1b1/0x1520 [ 35.031511] ? ioctl_preallocate+0x2b0/0x2b0 [ 35.035900] ? selinux_capable+0x40/0x40 [ 35.039938] ? SyS_futex+0x269/0x390 [ 35.043639] ? security_file_ioctl+0x89/0xb0 [ 35.048029] SyS_ioctl+0x8f/0xc0 [ 35.051387] entry_SYSCALL_64_fastpath+0x23/0x9a [ 35.056117] RIP: 0033:0x446599 [ 35.059287] RSP: 002b:00007ff7a5528ce8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 35.066969] RAX: ffffffffffffffda RBX: 00000000006dbc54 RCX: 0000000000446599 [ 35.074213] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000024f [ 35.081457] RBP: 00000000006dbc50 R08: 0000000000000000 R09: 0000000000000000 [ 35.088700] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 [ 35.095947] R13: 00007ffd029e3b1f R14: 00007ff7a55299c0 R15: 000000000000000e [ 35.104247] Dumping ftrace buffer: [ 35.107848] (ftrace buffer empty) [ 35.111529] Kernel Offset: disabled [ 35.115129] Rebooting in 86400 seconds..