[....] Starting enhanced syslogd: rsyslogd[ 11.256761] audit: type=1400 audit(1513996927.208:5): avc: denied { syslog } for pid=2991 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: [ 16.795085] audit: type=1400 audit(1513996932.746:6): avc: denied { map } for pid=3129 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-9,10.128.15.222' (ECDSA) to the list of known hosts. [ 22.987376] audit: type=1400 audit(1513996938.939:7): avc: denied { map } for pid=3143 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/23 02:42:19 parsed 1 programs 2017/12/23 02:42:19 executed programs: 0 [ 23.106813] audit: type=1400 audit(1513996939.058:8): avc: denied { map } for pid=3143 comm="syz-execprog" path="/root/syzkaller-shm552349090" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 23.188579] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 23.265090] kasan: CONFIG_KASAN_INLINE enabled [ 23.269709] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.277041] general protection fault: 0000 [#1] SMP KASAN [ 23.282545] Dumping ftrace buffer: [ 23.286051] (ftrace buffer empty) [ 23.289729] Modules linked in: [ 23.292889] CPU: 1 PID: 1606 Comm: udevd Not tainted 4.15.0-rc4+ #234 [ 23.299433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.308762] RIP: 0010:native_write_cr4+0x4/0x10 [ 23.313395] RSP: 0018:ffff8801db507ca8 EFLAGS: 00010006 [ 23.318737] RAX: ffff8801d0508440 RBX: 00000000001606e0 RCX: ffffffff811a2e02 [ 23.325976] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 23.333212] RBP: ffff8801db507ca8 R08: 000000000000000a R09: ffffea00072b1140 [ 23.340450] R10: 0000000000000002 R11: ffffed0039588a0a R12: 0000000000000006 [ 23.347687] R13: ffff8801d0508440 R14: ffff8801db515850 R15: ffff8801db515850 [ 23.354927] FS: 00007f906d3757a0(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 23.363118] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.368966] CR2: 00007f906d37c000 CR3: 00000001d0461003 CR4: 00000000001626e0 [ 23.376206] Call Trace: [ 23.378755] [ 23.380879] hardware_disable+0x34a/0x4b0 [ 23.385169] ? irq_work_sync+0x1a0/0x1a0 [ 23.389200] ? lock_downgrade+0x980/0x980 [ 23.393318] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 23.397784] kvm_arch_hardware_disable+0x35/0xd0 [ 23.402508] hardware_disable_nolock+0x30/0x40 [ 23.407060] flush_smp_call_function_queue+0x1f4/0x570 [ 23.412315] ? cpumask_weight+0x40/0x40 [ 23.416266] ? tick_program_event+0x83/0x100 [ 23.420827] ? __lock_is_held+0xb6/0x140 [ 23.424864] generic_smp_call_function_single_interrupt+0x13/0x30 [ 23.431066] smp_call_function_single_interrupt+0x103/0x640 [ 23.436744] ? smp_call_function_interrupt+0x640/0x640 [ 23.441988] ? _raw_spin_lock+0x32/0x40 [ 23.445934] ? _raw_spin_unlock+0x22/0x30 [ 23.450051] ? handle_edge_irq+0x2b4/0x7c0 [ 23.454265] ? task_prio+0x40/0x40 [ 23.457778] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.462592] call_function_single_interrupt+0xa9/0xb0 [ 23.467745] [ 23.469952] RIP: 0010:lock_is_held_type+0x198/0x210 [ 23.474934] RSP: 0018:ffff8801d0517968 EFLAGS: 00000296 ORIG_RAX: ffffffffffffff04 [ 23.482964] RAX: 0000000000000000 RBX: 1ffff1003a0a2f31 RCX: ffffffff81891546 [ 23.491685] RDX: 1ffffffff0bd9045 RSI: ffffffff85f406e0 RDI: 0000000000000282 [ 23.498934] RBP: ffff8801d0517978 R08: 000000000000000a R09: ffffea00072b1140 [ 23.506180] R10: 0000000000000002 R11: ffffed0039588a0a R12: ffff8801d0508440 [ 23.513850] R13: 0000000000000000 R14: 0000000000000c54 R15: 000000000000000a [ 23.523112] ? generic_perform_write+0x3b6/0x600 [ 23.527848] ___might_sleep+0x3d8/0x470 [ 23.531792] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.537647] ? shmem_write_begin+0xf7/0x1a0 [ 23.541937] ? shmem_write_begin+0x100/0x1a0 [ 23.547130] ? shmem_unused_huge_scan+0x160/0x160 [ 23.551941] ? shmem_unused_huge_scan+0x160/0x160 [ 23.556771] generic_perform_write+0x3c9/0x600 [ 23.561331] ? filemap_fdatawait_keep_errors+0xb0/0xb0 [ 23.566585] ? generic_update_time+0x1b2/0x270 [ 23.571135] ? __mnt_drop_write_file+0xd/0x70 [ 23.575600] ? file_update_time+0xbf/0x470 [ 23.579804] ? current_time+0xc0/0xc0 [ 23.583579] ? down_write+0x87/0x120 [ 23.587264] __generic_file_write_iter+0x366/0x5b0 [ 23.592163] generic_file_write_iter+0x399/0x790 [ 23.596891] ? __generic_file_write_iter+0x5b0/0x5b0 [ 23.601967] ? iov_iter_init+0xaf/0x1d0 [ 23.605915] __vfs_write+0x684/0x970 [ 23.609599] ? lock_acquire+0x256/0x580 [ 23.613541] ? kernel_read+0x120/0x120 [ 23.617410] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 23.622142] ? __sb_start_write+0x209/0x2a0 [ 23.626433] vfs_write+0x189/0x510 [ 23.629942] SyS_write+0xef/0x220 [ 23.633366] ? SyS_read+0x220/0x220 [ 23.636958] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.641943] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.646684] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 23.651406] RIP: 0033:0x7f906ca7d370 [ 23.655087] RSP: 002b:00007ffeb175d448 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 23.662762] RAX: ffffffffffffffda RBX: 00000000015cbc50 RCX: 00007f906ca7d370 [ 23.670000] RDX: 000000000000000a RSI: 00007f906d37c000 RDI: 0000000000000005 [ 23.677241] RBP: 0000000000000001 R08: 00007f906d3757a0 R09: 00000000ffffffff [ 23.684479] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000 [ 23.692699] R13: 00000000000005d6 R14: 0000000000000000 R15: 000000000000000a [ 23.700292] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 23.719386] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db507ca8 [ 23.725507] ---[ end trace d5801ef5c5698912 ]--- [ 23.730228] Kernel panic - not syncing: Fatal exception in interrupt [ 23.737131] Dumping ftrace buffer: [ 23.740640] (ftrace buffer empty) [ 23.744316] Kernel Offset: disabled [ 23.747909] Rebooting in 86400 seconds..