[ 32.287400] audit: type=1800 audit(1560655807.883:33): pid=6803 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 [ 32.314113] audit: type=1800 audit(1560655807.883:34): pid=6803 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: [ 36.306180] random: sshd: uninitialized urandom read (32 bytes read) [ 36.722077] audit: type=1400 audit(1560655812.323:35): avc: denied { map } for pid=6974 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 [ 36.775227] random: sshd: uninitialized urandom read (32 bytes read) [ 37.316871] random: sshd: uninitialized urandom read (32 bytes read) [ 37.499090] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts. [ 43.012935] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 43.134501] audit: type=1400 audit(1560655818.733:36): avc: denied { map } for pid=6986 comm="syz-executor684" path="/root/syz-executor684002308" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 43.167981] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) executing program executing program executing program executing program [ 43.189600] 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 [ 43.214603] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 43.226824] 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 [ 43.376948] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 43.409831] 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 [ 44.201863] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 44.226794] 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 [ 44.625970] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 44.645232] Bluetooth: Can't register HCI device [ 44.657286] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) executing program executing program executing program executing program executing program executing program executing program executing program [ 44.684464] 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 [ 44.855614] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 44.889705] 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 [ 45.671132] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 45.692956] 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 [ 45.821049] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 45.828762] 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 [ 45.922236] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 45.947193] 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 [ 46.302466] ------------[ cut here ]------------ [ 46.307388] WARNING: CPU: 1 PID: 7692 at fs/kernfs/dir.c:494 kernfs_get+0x58/0x70 [ 46.315021] Kernel panic - not syncing: panic_on_warn set ... [ 46.315021] [ 46.322401] CPU: 1 PID: 7692 Comm: syz-executor684 Not tainted 4.14.126 #20 [ 46.329513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.338901] Call Trace: [ 46.341518] dump_stack+0x138/0x19c [ 46.345171] panic+0x1f2/0x426 [ 46.348382] ? add_taint.cold+0x16/0x16 [ 46.352380] ? kernfs_get+0x58/0x70 [ 46.356212] ? kernfs_get+0x58/0x70 [ 46.359861] __warn.cold+0x2f/0x36 [ 46.363415] ? ist_end_non_atomic+0x10/0x10 [ 46.367755] ? kernfs_get+0x58/0x70 [ 46.371405] report_bug+0x216/0x254 [ 46.375058] do_error_trap+0x1bb/0x310 [ 46.379004] ? math_error+0x360/0x360 [ 46.382832] ? save_trace+0x290/0x290 [ 46.386658] ? __fprop_inc_percpu_max+0x1e0/0x1e0 [ 46.391521] ? __kernfs_new_node+0x141/0x420 [ 46.395959] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.400828] do_invalid_op+0x1b/0x20 [ 46.404564] invalid_op+0x1b/0x40 [ 46.408034] RIP: 0010:kernfs_get+0x58/0x70 [ 46.412276] RSP: 0018:ffff888084ec7978 EFLAGS: 00010297 [ 46.417658] RAX: ffff8880a126a3c0 RBX: ffff888084d7e7e0 RCX: 0000000000000000 [ 46.425036] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888084d7e7e0 [ 46.432321] RBP: ffff888084ec7980 R08: ffff8880a126a3c0 R09: 0000000000000001 [ 46.439615] R10: 0000000000000000 R11: ffff8880a126a3c0 R12: ffff88809103d700 [ 46.446906] R13: ffff8880a1015100 R14: 0000000000000001 R15: 00000000000041ed [ 46.454225] ? kernfs_get+0x58/0x70 [ 46.457877] kernfs_new_node+0x95/0xf0 [ 46.461800] kernfs_create_dir_ns+0x41/0x140 [ 46.466237] sysfs_create_dir_ns+0xbe/0x1d0 [ 46.470582] kobject_add_internal.part.0.cold+0x114/0x5ae [ 46.476141] kobject_add+0x11f/0x180 [ 46.479971] ? kset_create_and_add+0x180/0x180 [ 46.484581] ? mutex_unlock+0xd/0x10 [ 46.488321] device_add+0x383/0x1490 [ 46.492064] ? device_initialize+0x430/0x430 [ 46.496504] ? device_private_init+0x190/0x190 [ 46.501113] hci_register_dev+0x2d9/0x810 [ 46.505293] ? hci_init_sysfs+0x7c/0xa0 [ 46.509384] __vhci_create_device+0x2a6/0x560 [ 46.513934] vhci_write+0x2a1/0x437 [ 46.517582] __vfs_write+0x4a7/0x6b0 [ 46.521322] ? kernel_read+0x120/0x120 [ 46.525242] ? rw_verify_area+0xea/0x2b0 [ 46.529331] vfs_write+0x198/0x500 [ 46.532910] SyS_write+0xfd/0x230 [ 46.536387] ? SyS_read+0x230/0x230 [ 46.540034] ? do_syscall_64+0x53/0x640 [ 46.544030] ? SyS_read+0x230/0x230 [ 46.547707] do_syscall_64+0x1e8/0x640 [ 46.551614] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.556480] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.561688] RIP: 0033:0x441269 [ 46.566279] RSP: 002b:00007fff599d9488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 46.574005] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 46.581292] RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 [ 46.588586] RBP: 000000000000b4b8 R08: 00000000004002c8 R09: 00000000004002c8 [ 46.595872] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401fe0 [ 46.603251] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 46.612602] Kernel Offset: disabled [ 46.617668] Rebooting in 86400 seconds..