[....] Starting enhanced syslogd: rsyslogd[ 10.617382] audit: type=1400 audit(1514260131.778:5): avc: denied { syslog } for pid=2983 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: [ 15.544098] audit: type=1400 audit(1514260136.705:6): avc: denied { map } for pid=3124 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 'ci-upstream-kasan-gce-9,10.128.15.197' (ECDSA) to the list of known hosts. executing program [ 40.795770] audit: type=1400 audit(1514260161.957:7): avc: denied { map } for pid=3142 comm="syzkaller951103" path="/root/syzkaller951103196" 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 [ 40.875358] capability: warning: `syzkaller951103' uses 32-bit capabilities (legacy support in use) [ 40.900763] 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 [ 43.412598] WARNING: CPU: 0 PID: 3500 at arch/x86/kvm/x86.c:7305 kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 43.422032] Kernel panic - not syncing: panic_on_warn set ... [ 43.422032] [ 43.429372] CPU: 0 PID: 3500 Comm: syzkaller951103 Not tainted 4.15.0-rc5+ #237 [ 43.436787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.446112] Call Trace: [ 43.448678] dump_stack+0x194/0x257 [ 43.452289] ? arch_local_irq_restore+0x53/0x53 [ 43.456947] ? vsnprintf+0x1ed/0x1900 [ 43.460733] panic+0x1e4/0x41c [ 43.463899] ? refcount_error_report+0x214/0x214 [ 43.468627] ? show_regs_print_info+0x18/0x18 [ 43.473113] ? __warn+0x1c1/0x200 [ 43.476552] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 43.481540] __warn+0x1dc/0x200 [ 43.484796] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 43.489793] report_bug+0x211/0x2d0 [ 43.493408] fixup_bug.part.11+0x37/0x80 [ 43.497447] do_error_trap+0x2d7/0x3e0 [ 43.501306] ? lock_acquire+0x1d5/0x580 [ 43.505251] ? lock_acquire+0x1d5/0x580 [ 43.509203] ? math_error+0x400/0x400 [ 43.512983] ? __lock_is_held+0xb6/0x140 [ 43.517049] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.521879] do_invalid_op+0x1b/0x20 [ 43.525569] invalid_op+0x22/0x40 [ 43.528995] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 43.534593] RSP: 0018:ffff8801bd1b76b0 EFLAGS: 00010293 [ 43.539932] RAX: ffff8801d4100300 RBX: ffff8801d8490000 RCX: ffffffff810deeef [ 43.547174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d3271060 [ 43.554415] RBP: ffff8801bd1b7a40 R08: 1ffff1003a64eca3 R09: 0000000000000001 [ 43.561656] R10: ffff8801bd1b7a58 R11: 0000000000000004 R12: 0000000000000000 [ 43.568900] R13: ffff8801d4100300 R14: ffff8801d5526f00 R15: ffff8801d3270e40 [ 43.576173] ? kvm_arch_vcpu_ioctl_run+0x1bf/0x5bf0 [ 43.581181] ? get_futex_value_locked+0xc3/0xf0 [ 43.585829] ? futex_wait_setup+0x22e/0x3d0 [ 43.590122] ? _raw_spin_unlock+0x22/0x30 [ 43.594262] ? futex_wake+0x680/0x680 [ 43.598036] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 43.603208] ? kvm_arch_vcpu_runnable+0x560/0x560 [ 43.608025] ? __lock_acquire+0x664/0x3e00 [ 43.612247] ? handle_rdmsr+0x950/0x950 [ 43.616222] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 43.621389] ? perf_trace_run_bpf_submit+0x20d/0x330 [ 43.626646] ? perf_trace_lock_acquire+0x532/0x980 [ 43.631562] ? perf_tp_event+0xae0/0xae0 [ 43.635598] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 43.640680] ? futex_wake+0x2ca/0x680 [ 43.644481] ? kvm_arch_vcpu_load+0x1c1/0x890 [ 43.648953] ? kvm_arch_vcpu_load+0x4b1/0x890 [ 43.653431] ? kvm_arch_dev_ioctl+0x3b0/0x3b0 [ 43.657899] ? preempt_notifier_dec+0x20/0x20 [ 43.662369] ? perf_trace_lock+0x900/0x900 [ 43.666605] kvm_vcpu_ioctl+0x64c/0x1010 [ 43.670635] ? kvm_vcpu_ioctl+0x64c/0x1010 [ 43.674852] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 43.680728] ? find_held_lock+0x35/0x1d0 [ 43.684781] ? __fget+0x333/0x570 [ 43.688210] ? lock_downgrade+0x980/0x980 [ 43.692341] ? lock_release+0xa40/0xa40 [ 43.696296] ? __lock_is_held+0xb6/0x140 [ 43.700361] ? __fget+0x35c/0x570 [ 43.703807] ? iterate_fd+0x3f0/0x3f0 [ 43.707578] ? __fget_light+0x297/0x380 [ 43.711528] ? fget_raw+0x20/0x20 [ 43.714955] ? __do_page_fault+0x3d6/0xc90 [ 43.719185] ? trace_event_raw_event_kvm_age_page+0x340/0x340 [ 43.725046] do_vfs_ioctl+0x1b1/0x1520 [ 43.728923] ? ioctl_preallocate+0x2b0/0x2b0 [ 43.733310] ? selinux_capable+0x40/0x40 [ 43.737355] ? SyS_futex+0x269/0x390 [ 43.741044] ? SyS_getsockopt+0x19b/0x340 [ 43.745191] ? security_file_ioctl+0x89/0xb0 [ 43.749584] SyS_ioctl+0x8f/0xc0 [ 43.752936] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 43.757666] RIP: 0033:0x448249 [ 43.760826] RSP: 002b:00007fb7a0644ce8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 43.768509] RAX: ffffffffffffffda RBX: 00000000006dec24 RCX: 0000000000448249 [ 43.776467] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 [ 43.783711] RBP: 00000000006dec20 R08: 0000000000000000 R09: 0000000000000000 [ 43.790951] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 [ 43.798193] R13: 00007ffd3f7417af R14: 00007fb7a06459c0 R15: 0000000000000015 [ 43.806157] Dumping ftrace buffer: [ 43.809754] (ftrace buffer empty) [ 43.813434] Kernel Offset: disabled [ 43.817036] Rebooting in 86400 seconds..