[....] Starting enhanced syslogd: rsyslogd[ 12.849425] audit: type=1400 audit(1516166090.500:5): avc: denied { syslog } for pid=3490 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?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: [ 18.247665] audit: type=1400 audit(1516166095.898:6): avc: denied { map } for pid=3630 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 '10.128.15.225' (ECDSA) to the list of known hosts. [ 24.481700] audit: type=1400 audit(1516166102.132:7): avc: denied { map } for pid=3644 comm="syzkaller922156" path="/root/syzkaller922156683" 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.syz3.accept_dad = 0 net.ipv6.conf.syz7.accept_dad = 0 net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz4.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz2.router_solicitations = 0 net.ipv6.conf.syz1.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 26.117090] ip (4023) used greatest stack depth: 16096 bytes left [ 26.316540] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported 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 RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program executing program executing program executing program executing program executing program executing program [ 28.448649] 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 [ 30.873712] WARNING: CPU: 0 PID: 4748 at arch/x86/kvm/x86.c:7305 kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 30.883114] Kernel panic - not syncing: panic_on_warn set ... [ 30.883114] [ 30.890456] CPU: 0 PID: 4748 Comm: syzkaller922156 Not tainted 4.15.0-rc8+ #264 [ 30.897874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.907201] Call Trace: [ 30.909768] dump_stack+0x194/0x257 [ 30.913376] ? arch_local_irq_restore+0x53/0x53 [ 30.918028] ? vsnprintf+0x1ed/0x1900 [ 30.921808] panic+0x1e4/0x41c [ 30.924975] ? refcount_error_report+0x214/0x214 [ 30.929703] ? show_regs_print_info+0x18/0x18 [ 30.934181] ? __warn+0x1c1/0x200 [ 30.937614] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 30.942604] __warn+0x1dc/0x200 [ 30.945860] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 30.950853] report_bug+0x211/0x2d0 [ 30.954462] fixup_bug.part.11+0x37/0x80 [ 30.958502] do_error_trap+0x2d7/0x3e0 [ 30.962362] ? lock_acquire+0x1d5/0x580 [ 30.966314] ? lock_acquire+0x1d5/0x580 [ 30.970267] ? math_error+0x400/0x400 [ 30.974046] ? __lock_is_held+0xb6/0x140 [ 30.978093] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.982919] do_invalid_op+0x1b/0x20 [ 30.986607] invalid_op+0x22/0x40 [ 30.990037] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 30.995630] RSP: 0018:ffff8801cc9576b0 EFLAGS: 00010293 [ 31.000968] RAX: ffff8801c6694200 RBX: ffff8801cfc82000 RCX: ffffffff810df29f [ 31.008212] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801c5f58520 [ 31.015457] RBP: ffff8801cc957a40 R08: 1ffff10038bebb3b R09: 0000000000000001 [ 31.022700] R10: ffff8801cc957a58 R11: 0000000000000004 R12: 0000000000000000 [ 31.029945] R13: ffff8801c6694200 R14: ffff8801dad5c980 R15: ffff8801c5f58300 [ 31.037202] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 31.042204] ? get_futex_value_locked+0xc3/0xf0 [ 31.046854] ? vmcs_load+0xb3/0x180 [ 31.050454] ? futex_wait_setup+0x22e/0x3d0 [ 31.054762] ? crash_vmclear_local_loaded_vmcss+0x160/0x160 [ 31.060461] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 31.065278] ? __lock_acquire+0x664/0x3e00 [ 31.069493] ? handle_rdmsr+0x950/0x950 [ 31.073453] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.078615] ? check_noncircular+0x20/0x20 [ 31.082823] ? __pmd_alloc+0x4e0/0x4e0 [ 31.086685] ? hash_futex+0x15/0x210 [ 31.090376] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 31.095455] ? futex_wake+0x2ca/0x680 [ 31.099245] ? kvm_arch_vcpu_load+0x1c1/0x890 [ 31.103718] ? kvm_arch_vcpu_load+0x4b1/0x890 [ 31.108191] ? kvm_arch_dev_ioctl+0x3b0/0x3b0 [ 31.112663] ? preempt_notifier_dec+0x20/0x20 [ 31.117151] kvm_vcpu_ioctl+0x64c/0x1010 [ 31.121186] ? kvm_vcpu_ioctl+0x64c/0x1010 [ 31.125397] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 31.131268] ? find_held_lock+0x35/0x1d0 [ 31.135314] ? __fget+0x333/0x570 [ 31.138742] ? lock_downgrade+0x980/0x980 [ 31.142870] ? lock_release+0xa40/0xa40 [ 31.146822] ? __lock_is_held+0xb6/0x140 [ 31.150872] ? __fget+0x35c/0x570 [ 31.154321] ? iterate_fd+0x3f0/0x3f0 [ 31.158099] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.162836] ? retint_kernel+0x10/0x10 [ 31.166703] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 31.172561] do_vfs_ioctl+0x1b1/0x1520 [ 31.176429] ? ioctl_preallocate+0x2b0/0x2b0 [ 31.180828] ? selinux_capable+0x40/0x40 [ 31.184869] ? SyS_futex+0x269/0x390 [ 31.188571] ? security_file_ioctl+0x89/0xb0 [ 31.192960] SyS_ioctl+0x8f/0xc0 [ 31.196307] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 31.201033] RIP: 0033:0x44a8f9 [ 31.204201] RSP: 002b:00007f3d47a11ce8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 31.211888] RAX: ffffffffffffffda RBX: 00000000006dcc24 RCX: 000000000044a8f9 [ 31.219134] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000008a [ 31.226379] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 31.233624] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 [ 31.240869] R13: 00007fff678a210f R14: 00007f3d47a129c0 R15: 000000000000000a [ 31.249088] Dumping ftrace buffer: [ 31.252699] (ftrace buffer empty) [ 31.256382] Kernel Offset: disabled [ 31.259985] Rebooting in 86400 seconds..