[....] Starting enhanced syslogd: rsyslogd[ 12.428435] audit: type=1400 audit(1516166640.000:5): avc: denied { syslog } for pid=3508 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: [ 18.701425] audit: type=1400 audit(1516166646.273:6): avc: denied { map } for pid=3645 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 '10.128.15.234' (ECDSA) to the list of known hosts. executing program executing program executing program [ 99.089405] audit: type=1400 audit(1516166726.661:7): avc: denied { map } for pid=3662 comm="syzkaller786748" path="/root/syzkaller786748626" 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 [ 99.124402] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 128.492133] WARNING: CPU: 1 PID: 7090 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 128.501571] Kernel panic - not syncing: panic_on_warn set ... [ 128.501571] [ 128.508910] CPU: 1 PID: 7090 Comm: syzkaller786748 Not tainted 4.15.0-rc7-mm1+ #56 [ 128.516591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 128.525925] Call Trace: [ 128.528492] dump_stack+0x194/0x257 [ 128.532102] ? arch_local_irq_restore+0x53/0x53 [ 128.536751] ? vsnprintf+0x1ed/0x1900 [ 128.540529] panic+0x1e4/0x41c [ 128.543702] ? refcount_error_report+0x214/0x214 [ 128.548431] ? show_regs_print_info+0x18/0x18 [ 128.552907] ? __warn+0x1c1/0x200 [ 128.556337] ? kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 128.561325] __warn+0x1dc/0x200 [ 128.564600] ? kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 128.569602] report_bug+0x211/0x2d0 [ 128.573211] fixup_bug.part.11+0x37/0x80 [ 128.577251] do_error_trap+0x2d7/0x3e0 [ 128.581134] ? math_error+0x400/0x400 [ 128.584913] ? __lock_is_held+0xb6/0x140 [ 128.588954] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 128.593785] do_invalid_op+0x1b/0x20 [ 128.597470] invalid_op+0x22/0x40 [ 128.600895] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 128.606490] RSP: 0018:ffff8801d1c676b0 EFLAGS: 00010293 [ 128.611834] RAX: ffff8801c546e4c0 RBX: ffff8801d639a000 RCX: ffffffff810df8c7 [ 128.619075] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801c60502e0 [ 128.626315] RBP: ffff8801d1c67a40 R08: 1ffff10038c0aaf3 R09: 0000000000000001 [ 128.633556] R10: ffff8801d1c67690 R11: 0000000000000004 R12: 0000000000000000 [ 128.640802] R13: ffff8801d8d6b180 R14: ffff8801c60500c0 R15: ffff8801c60500c0 [ 128.648058] ? kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 [ 128.653057] ? mutex_lock_io_nested+0x1900/0x1900 [ 128.657871] ? futex_wait_setup+0x22e/0x3d0 [ 128.662172] ? futex_wake+0x680/0x680 [ 128.665952] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 128.670766] ? __lock_acquire+0x664/0x3e00 [ 128.674973] ? mmdrop+0x18/0x30 [ 128.678227] ? drop_futex_key_refs.isra.12+0x63/0xa0 [ 128.683304] ? futex_wait+0x6a9/0x9a0 [ 128.687085] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 128.692252] ? mmdrop+0x18/0x30 [ 128.695502] ? drop_futex_key_refs.isra.12+0x63/0xa0 [ 128.700577] ? futex_wake+0x2ca/0x680 [ 128.704349] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 128.709171] ? get_futex_key+0x1d50/0x1d50 [ 128.713397] ? check_noncircular+0x20/0x20 [ 128.717611] kvm_vcpu_ioctl+0x6f1/0xff0 [ 128.721555] ? kvm_vcpu_ioctl+0x6f1/0xff0 [ 128.725679] ? kvm_vcpu_fault+0x520/0x520 [ 128.729810] ? find_held_lock+0x35/0x1d0 [ 128.733852] ? __fget+0x333/0x570 [ 128.737281] ? lock_downgrade+0x980/0x980 [ 128.741399] ? find_held_lock+0x35/0x1d0 [ 128.745438] ? lock_release+0xa40/0xa40 [ 128.749389] ? __lock_is_held+0xb6/0x140 [ 128.753437] ? __fget+0x35c/0x570 [ 128.756870] ? iterate_fd+0x3f0/0x3f0 [ 128.760644] ? up_read+0x1a/0x40 [ 128.764006] ? __do_page_fault+0x3d6/0xc90 [ 128.768236] ? kvm_vcpu_fault+0x520/0x520 [ 128.772359] do_vfs_ioctl+0x1b1/0x1520 [ 128.776224] ? ioctl_preallocate+0x2b0/0x2b0 [ 128.780608] ? selinux_capable+0x40/0x40 [ 128.784646] ? SyS_futex+0x269/0x390 [ 128.788343] ? security_file_ioctl+0x89/0xb0 [ 128.792730] SyS_ioctl+0x8f/0xc0 [ 128.796076] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 128.800803] RIP: 0033:0x445cb9 [ 128.803967] RSP: 002b:00007f6da8858da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 128.811645] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445cb9 [ 128.818886] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 [ 128.826128] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 128.833370] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc20 [ 128.840611] R13: 6d766b2f7665642f R14: 00007f6da88599c0 R15: 000000000000000a [ 128.848516] Dumping ftrace buffer: [ 128.852115] (ftrace buffer empty) [ 128.855799] Kernel Offset: disabled [ 128.859399] Rebooting in 86400 seconds..