[....] Starting enhanced syslogd: rsyslogd[ 13.460097] audit: type=1400 audit(1513390400.842:5): avc: denied { syslog } for pid=2996 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: [ 17.637198] audit: type=1400 audit(1513390405.020:6): avc: denied { map } for pid=3134 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-mmots-kasan-gce-9,10.128.0.56' (ECDSA) to the list of known hosts. executing program [ 39.283376] audit: type=1400 audit(1513390426.666:7): avc: denied { map } for pid=3152 comm="syzkaller520920" path="/root/syzkaller520920638" 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 [ 39.421835] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program [ 39.626231] kasan: CONFIG_KASAN_INLINE enabled [ 39.630842] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.638180] general protection fault: 0000 [#1] SMP KASAN [ 39.643684] Dumping ftrace buffer: [ 39.647190] (ftrace buffer empty) [ 39.650864] Modules linked in: [ 39.654023] CPU: 0 PID: 1600 Comm: udevd Not tainted 4.15.0-rc2-mm1+ #39 [ 39.660830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.670163] RIP: 0010:native_write_cr4+0x4/0x10 [ 39.674795] RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006 [ 39.680122] RAX: ffff8801cef6c380 RBX: 00000000001606f0 RCX: ffffffff811a2d22 [ 39.687359] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 39.694594] RBP: ffff8801db207ca8 R08: ffff8801cef774e0 R09: 1ffff10039deef19 [ 39.702361] R10: ffff8801cef6c380 R11: 0000000000000003 R12: 0000000000000006 [ 39.709601] R13: ffff8801cef6c380 R14: ffff8801db21a130 R15: ffff8801db21a130 [ 39.716838] FS: 00007fece39257a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 39.725027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.730874] CR2: 00007fece392c000 CR3: 00000001ceecc006 CR4: 00000000001626f0 [ 39.738111] Call Trace: [ 39.740658] [ 39.742780] hardware_disable+0x34a/0x4b0 [ 39.746895] ? irq_work_sync+0x1a0/0x1a0 [ 39.750924] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 39.755383] kvm_arch_hardware_disable+0x35/0xd0 [ 39.760116] hardware_disable_nolock+0x30/0x40 [ 39.764673] flush_smp_call_function_queue+0x1f4/0x570 [ 39.769921] ? cpumask_weight+0x40/0x40 [ 39.773861] ? rcu_idle_exit+0x410/0x410 [ 39.777892] ? __lock_is_held+0xbc/0x140 [ 39.781925] generic_smp_call_function_single_interrupt+0x13/0x30 [ 39.788122] smp_call_function_single_interrupt+0x103/0x640 [ 39.793797] ? smp_call_function_interrupt+0x640/0x640 [ 39.799045] ? _raw_spin_lock+0x32/0x40 [ 39.802994] ? _raw_spin_unlock+0x22/0x30 [ 39.807115] ? handle_edge_irq+0x2b4/0x7c0 [ 39.811316] ? task_prio+0x40/0x40 [ 39.814833] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.819643] call_function_single_interrupt+0xa9/0xb0 [ 39.824794] [ 39.827000] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 [ 39.832412] RSP: 0018:ffff8801cef77a08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 [ 39.840085] RAX: ffff8801cef6c380 RBX: ffff8801cdaab4d8 RCX: ffffffff81b5bab1 [ 39.847323] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801cdaab4d8 [ 39.854558] RBP: ffff8801cef77a08 R08: ffff8801cef774e0 R09: 1ffff10039deef19 [ 39.861794] R10: ffff8801cef6c380 R11: 0000000000000003 R12: 0000000000000001 [ 39.869028] R13: dffffc0000000000 R14: ffff8801cdaab488 R15: ffff8801cef77b60 [ 39.876271] ? __d_lookup+0x4e1/0x840 [ 39.880040] __d_lookup+0x4e1/0x840 [ 39.883643] ? d_alloc_parallel+0x1a10/0x1a10 [ 39.888106] ? lock_release+0xda0/0xda0 [ 39.892042] ? lock_rename+0x1c0/0x280 [ 39.895894] ? mark_held_locks+0xb2/0x100 [ 39.900005] ? d_lookup+0x133/0x2e0 [ 39.903599] d_lookup+0x1b2/0x2e0 [ 39.907027] ? __d_lookup+0x840/0x840 [ 39.910793] ? down_write_nested+0x8b/0x120 [ 39.915076] ? lock_rename+0x1c0/0x280 [ 39.918925] ? _down_write_nest_lock+0x120/0x120 [ 39.923647] lookup_dcache+0x22/0x100 [ 39.927412] __lookup_hash+0x2b/0x190 [ 39.931177] SyS_rename+0x542/0xc90 [ 39.934773] ? SyS_renameat+0xca0/0xca0 [ 39.938711] ? __lock_is_held+0xbc/0x140 [ 39.942741] ? __sb_end_write+0x9e/0xd0 [ 39.946681] ? vfs_write+0x22a/0x510 [ 39.950361] ? SyS_write+0x184/0x220 [ 39.954046] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 39.958854] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.963836] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.968579] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.973300] RIP: 0033:0x7fece2fb2527 [ 39.976982] RSP: 002b:00007ffeb5eacdf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000052 [ 39.984659] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fece2fb2527 [ 39.991894] RDX: 0000000000000000 RSI: 00007ffeb5ead240 RDI: 00007ffeb5eace40 [ 39.999127] RBP: 00000000007acc70 R08: 00000000004207f1 R09: 00007fece3082e00 [ 40.006362] R10: 0000000000000022 R11: 0000000000000202 R12: 00007ffeb5eace39 [ 40.013598] R13: 0000000000000008 R14: 0000000000000008 R15: 00007ffeb5eace38 [ 40.020841] 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 [ 40.039900] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db207ca8 [ 40.046010] ---[ end trace 655e59ef66a0b5f0 ]--- [ 40.050727] Kernel panic - not syncing: Fatal exception in interrupt [ 40.057210] Dumping ftrace buffer: [ 40.060715] (ftrace buffer empty) [ 40.064390] Kernel Offset: disabled [ 40.067982] Rebooting in 86400 seconds..