[....] Starting enhanced syslogd: rsyslogd[ 12.036312] audit: type=1400 audit(1513682102.537:5): avc: denied { syslog } for pid=2999 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: [ 17.396007] audit: type=1400 audit(1513682107.896:6): avc: denied { map } for pid=3138 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-2,10.128.0.8' (ECDSA) to the list of known hosts. executing program [ 23.741325] audit: type=1400 audit(1513682114.242:7): avc: denied { map } for pid=3152 comm="syzkaller562940" path="/root/syzkaller562940672" 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 [ 23.801316] 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 [ 25.263579] kasan: CONFIG_KASAN_INLINE enabled [ 25.268208] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.275545] general protection fault: 0000 [#1] SMP KASAN [ 25.281049] Dumping ftrace buffer: [ 25.284554] (ftrace buffer empty) [ 25.288232] Modules linked in: [ 25.291394] CPU: 0 PID: 3133 Comm: udevd Not tainted 4.15.0-rc2-mm1+ #39 [ 25.298196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.307525] RIP: 0010:native_write_cr4+0x4/0x10 [ 25.312161] RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006 [ 25.317491] RAX: ffff8801c76ec080 RBX: 00000000001606f0 RCX: ffffffff811a2d22 [ 25.324727] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 25.331964] RBP: ffff8801db207ca8 R08: 0000000000000002 R09: 0000000000000006 [ 25.339199] R10: 0000000000000000 R11: ffffffff87892d20 R12: 0000000000000006 [ 25.346437] R13: ffff8801c76ec080 R14: ffff8801db21a130 R15: ffff8801db21a130 [ 25.353678] FS: 00007fb6346d57a0(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 25.361868] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.367719] CR2: 00007fb6346dc000 CR3: 00000001c71fa004 CR4: 00000000001626f0 [ 25.374956] Call Trace: [ 25.377504] [ 25.379629] hardware_disable+0x34a/0x4b0 [ 25.383747] ? irq_work_sync+0x1a0/0x1a0 [ 25.387780] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 25.392243] kvm_arch_hardware_disable+0x35/0xd0 [ 25.396965] hardware_disable_nolock+0x30/0x40 [ 25.401515] flush_smp_call_function_queue+0x1f4/0x570 [ 25.406758] ? cpumask_weight+0x40/0x40 [ 25.410706] ? rcu_idle_exit+0x410/0x410 [ 25.414737] ? __lock_is_held+0xbc/0x140 [ 25.418773] generic_smp_call_function_single_interrupt+0x13/0x30 [ 25.424971] smp_call_function_single_interrupt+0x103/0x640 [ 25.430648] ? smp_call_function_interrupt+0x640/0x640 [ 25.435893] ? _raw_spin_lock+0x32/0x40 [ 25.439834] ? _raw_spin_unlock+0x22/0x30 [ 25.443952] ? handle_edge_irq+0x2b4/0x7c0 [ 25.448165] ? task_prio+0x40/0x40 [ 25.451680] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.456497] call_function_single_interrupt+0xa9/0xb0 [ 25.461651] [ 25.463857] RIP: 0010:flex_array_get+0x1ab/0x230 [ 25.468587] RSP: 0018:ffff8801c72af4f8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff04 [ 25.476262] RAX: 0000000000000000 RBX: ffff8801d1222880 RCX: ffffffff825094c5 [ 25.483500] RDX: 1ffff1003a244511 RSI: 0000000000000001 RDI: ffff8801d1222888 [ 25.490737] RBP: ffff8801c72af528 R08: 0000000000000002 R09: 0000000000000006 [ 25.497973] R10: 0000000000000000 R11: ffffffff87892d20 R12: 0000000000000001 [ 25.505210] R13: ffff8801d1222898 R14: 0000000000000008 R15: 0000000000000000 [ 25.512453] ? flex_array_get+0x185/0x230 [ 25.516572] ? flex_array_get+0x185/0x230 [ 25.520690] flex_array_get_ptr+0x1d/0x60 [ 25.524805] context_struct_to_string+0x1c2/0x720 [ 25.529613] ? get_permissions_callback+0xb0/0xb0 [ 25.534422] ? sidtab_search_core+0x1c8/0x320 [ 25.538887] security_sid_to_context_core+0x18a/0x250 [ 25.544045] security_sid_to_context_force+0x28/0x30 [ 25.549116] selinux_inode_init_security+0x546/0x840 [ 25.554190] ? selinux_inode_create+0x30/0x30 [ 25.558653] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.563637] ? __lockdep_init_map+0xe4/0x650 [ 25.568017] ? lockdep_init_map+0x3d/0x70 [ 25.572139] ? get_acl+0x15a/0x210 [ 25.575653] security_inode_init_security+0x164/0x390 [ 25.580811] ? shmem_tmpfile+0xf0/0xf0 [ 25.584666] ? unregister_lsm_notifier+0x20/0x20 [ 25.589403] shmem_mknod+0x9b/0x1b0 [ 25.592995] ? selinux_inode_create+0x22/0x30 [ 25.597461] shmem_create+0x2b/0x40 [ 25.601052] ? shmem_mkdir+0x50/0x50 [ 25.604734] lookup_open+0x11d0/0x1900 [ 25.608599] ? trailing_symlink+0x810/0x810 [ 25.612899] path_openat+0xd7c/0x3530 [ 25.616674] ? path_lookupat+0xba0/0xba0 [ 25.620705] ? getname+0x19/0x20 [ 25.624051] ? do_sys_open+0x2e7/0x6d0 [ 25.627907] ? lock_release+0xda0/0xda0 [ 25.631850] ? do_raw_spin_trylock+0x190/0x190 [ 25.636399] ? __lock_is_held+0xbc/0x140 [ 25.640433] ? _raw_spin_unlock+0x22/0x30 [ 25.644549] ? __alloc_fd+0x29b/0x750 [ 25.648323] do_filp_open+0x25b/0x3b0 [ 25.652093] ? may_open_dev+0xe0/0xe0 [ 25.655865] ? mpi_resize+0x200/0x200 [ 25.659637] ? get_unused_fd_flags+0x121/0x190 [ 25.664187] ? getname_flags+0x256/0x580 [ 25.668221] do_sys_open+0x502/0x6d0 [ 25.671900] ? do_sys_open+0x502/0x6d0 [ 25.675756] ? filp_open+0x70/0x70 [ 25.679261] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 25.684071] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.689059] SyS_open+0x2d/0x40 [ 25.692308] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.697030] RIP: 0033:0x7fb633ddd120 [ 25.700709] RSP: 002b:00007ffc0476e7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 25.708385] RAX: ffffffffffffffda RBX: 0000000001023f20 RCX: 00007fb633ddd120 [ 25.715622] RDX: 00000000000001b6 RSI: 0000000000080241 RDI: 00007ffc0476eca0 [ 25.722858] RBP: 0000000000000005 R08: 0000000000000004 R09: 0000000000000001 [ 25.730094] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000001000 [ 25.737331] R13: 0000000000f02150 R14: 00007ffc0476d198 R15: 0000000000000000 [ 25.744574] 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 [ 25.763669] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db207ca8 [ 25.769787] ---[ end trace edba63d16d698875 ]--- [ 25.774509] Kernel panic - not syncing: Fatal exception in interrupt [ 25.781368] Dumping ftrace buffer: [ 25.784882] (ftrace buffer empty) [ 25.788561] Kernel Offset: disabled [ 25.792154] Rebooting in 86400 seconds..