[ 33.098881] audit: type=1800 audit(1560221284.488:33): pid=6877 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 33.126034] audit: type=1800 audit(1560221284.498:34): pid=6877 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 40.251940] random: sshd: uninitialized urandom read (32 bytes read) [ 40.694829] audit: type=1400 audit(1560221292.088:35): avc: denied { map } for pid=7049 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 [ 40.745400] random: sshd: uninitialized urandom read (32 bytes read) [ 41.307282] random: sshd: uninitialized urandom read (32 bytes read) [ 459.078126] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.20' (ECDSA) to the list of known hosts. [ 464.772135] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 464.891963] audit: type=1400 audit(1560221716.288:36): avc: denied { map } for pid=7061 comm="syz-executor187" path="/root/syz-executor187441400" dev="sda1" ino=1426 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 467.254455] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 467.285165] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 467.431754] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 467.463838] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program [ 467.479069] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 467.494310] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 467.502386] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 467.515337] Bluetooth: Can't register HCI device [ 467.521054] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program [ 467.537984] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 467.631736] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 467.632863] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 467.639264] kobject_add_internal failed for hci3 (error: -2 parent: bluetooth) [ 467.655378] Bluetooth: Can't register HCI device [ 467.677009] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 467.684928] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 468.225362] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 468.261660] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 468.439211] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 468.449130] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 469.392266] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 469.404808] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 470.969322] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 470.996781] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 471.395563] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 471.404147] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 471.404150] Bluetooth: Can't register HCI device [ 471.424823] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 472.204008] ------------[ cut here ]------------ [ 472.208906] WARNING: CPU: 0 PID: 8747 at fs/kernfs/dir.c:494 kernfs_get+0x58/0x70 [ 472.208912] Kernel panic - not syncing: panic_on_warn set ... [ 472.208912] [ 472.220334] kobject: 'bluetooth' (ffff888099ea2380): kobject_add_internal: parent: 'virtual', set: '(null)' [ 472.223871] CPU: 0 PID: 8747 Comm: syz-executor187 Not tainted 4.14.124 #18 [ 472.223875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 472.223929] Call Trace: [ 472.252916] dump_stack+0x138/0x19c [ 472.253407] kobject: 'hci0' (ffff888095189be8): calling ktype release [ 472.256543] panic+0x1f2/0x426 [ 472.266291] ? add_taint.cold+0x16/0x16 [ 472.268475] kobject: 'hci2' (ffff888093875e68): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 472.270259] ? kernfs_get+0x58/0x70 [ 472.270272] ? kernfs_get+0x58/0x70 [ 472.270278] __warn.cold+0x2f/0x36 [ 472.270286] ? ist_end_non_atomic+0x10/0x10 [ 472.270294] ? kernfs_get+0x58/0x70 [ 472.280521] kobject: 'hci0' (ffff8880979ddf68): kobject_add_internal: parent: 'bluetooth', set: 'devices' [ 472.283594] report_bug+0x216/0x254 [ 472.287357] kobject: 'hci0' (ffff8880979ddf68): kobject_uevent_env [ 472.290718] do_error_trap+0x1bb/0x310 [ 472.290727] ? math_error+0x360/0x360 [ 472.290740] ? save_trace+0x290/0x290 [ 472.290747] ? __fprop_inc_percpu_max+0x1e0/0x1e0 [ 472.290758] ? __kernfs_new_node+0x141/0x420 [ 472.301363] kobject: 'hci2' (ffff888093875e68): kobject_uevent_env [ 472.308361] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 472.314129] kobject: 'hci0': free name [ 472.318282] do_invalid_op+0x1b/0x20 [ 472.327952] kobject: 'hci0' (ffff8880979ddf68): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' [ 472.329760] invalid_op+0x1b/0x40 [ 472.345139] kobject: 'hci2' (ffff888093875e68): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' [ 472.345261] RIP: 0010:kernfs_get+0x58/0x70 [ 472.350266] kobject: 'rfkill1659' (ffff8880a102d768): kobject_add_internal: parent: 'hci0', set: 'devices' [ 472.353946] RSP: 0018:ffff88809fce7978 EFLAGS: 00010297 [ 472.353953] RAX: ffff88809524e500 RBX: ffff888077eb5e00 RCX: 0000000000000000 [ 472.353957] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888077eb5e00 [ 472.353960] RBP: ffff88809fce7980 R08: ffff88809524e500 R09: 0000000000000001 [ 472.353964] R10: 0000000000000000 R11: ffff88809524e500 R12: ffff88809907e700 [ 472.358051] kobject: 'rfkill1659' (ffff8880a102d768): kobject_uevent_env [ 472.367407] R13: ffff8880910a94c0 R14: 0000000000000001 R15: 00000000000041ed [ 472.367429] ? kernfs_get+0x58/0x70 [ 472.367437] kernfs_new_node+0x95/0xf0 [ 472.367446] kernfs_create_dir_ns+0x41/0x140 [ 472.367456] sysfs_create_dir_ns+0xbe/0x1d0 [ 472.399011] kobject: 'rfkill1659' (ffff8880a102d768): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill1659' [ 472.399852] kobject_add_internal.part.0.cold+0x114/0x5ae [ 472.421023] kobject: 'rfkill1660' (ffff888091c6cf28): kobject_add_internal: parent: 'hci2', set: 'devices' [ 472.421626] kobject_add+0x11f/0x180 [ 472.429122] kobject: 'rfkill1660' (ffff888091c6cf28): kobject_uevent_env [ 472.435703] ? kset_create_and_add+0x180/0x180 [ 472.435717] ? mutex_unlock+0xd/0x10 [ 472.435733] device_add+0x383/0x1490 [ 472.435742] ? device_initialize+0x430/0x430 [ 472.435751] ? device_private_init+0x190/0x190 [ 472.444407] kobject: 'rfkill1659' (ffff8880a102d768): kobject_uevent_env [ 472.446682] hci_register_dev+0x2d9/0x810 [ 472.454247] kobject: 'rfkill1659' (ffff8880a102d768): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill1659' [ 472.454916] ? hci_init_sysfs+0x7c/0xa0 [ 472.469088] kobject: 'rfkill1660' (ffff888091c6cf28): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill1660' [ 472.470303] __vhci_create_device+0x2a6/0x560 [ 472.470314] vhci_write+0x2a1/0x437 [ 472.485411] kobject: 'rfkill1659' (ffff8880a102d768): kobject_cleanup, parent (null) [ 472.485711] __vfs_write+0x4a7/0x6b0 [ 472.489402] kobject: 'rfkill1659' (ffff8880a102d768): calling ktype release [ 472.496222] ? kernel_read+0x120/0x120 [ 472.496241] ? rw_verify_area+0xea/0x2b0 [ 472.496250] vfs_write+0x198/0x500 [ 472.496259] SyS_write+0xb8/0x180 [ 472.496268] ? SyS_read+0x180/0x180 [ 472.502259] kobject: 'rfkill1660' (ffff888091c6cf28): kobject_uevent_env [ 472.504528] ? do_syscall_64+0x53/0x640 [ 472.508245] kobject: 'rfkill1660' (ffff888091c6cf28): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill1660' [ 472.512610] ? SyS_read+0x180/0x180 [ 472.512620] do_syscall_64+0x1e8/0x640 [ 472.512626] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 472.512640] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 472.512647] RIP: 0033:0x441269 [ 472.512653] RSP: 002b:00007ffee7613b38 EFLAGS: 00000246 [ 472.532034] kobject: 'rfkill1659': free name [ 472.539242] ORIG_RAX: 0000000000000001 [ 472.543362] kobject: 'rfkill1660' (ffff888091c6cf28): kobject_cleanup, parent (null) [ 472.554310] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 472.554315] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 472.554319] RBP: 0000000000073455 R08: 00000000004002c8 R09: 00000000004002c8 [ 472.554323] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401fe0 [ 472.554327] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 472.560284] Kernel Offset: disabled [ 472.706749] Rebooting in 86400 seconds..