R13: 00000000004c95ff R14: 00000000004e0958 R15: 0000000000000004 Bluetooth: Can't register HCI device kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) ------------[ cut here ]------------ kobject: 'hci2' (ffff88805ec92e28): kobject_cleanup, parent (null) WARNING: CPU: 1 PID: 9959 at fs/kernfs/dir.c:494 kernfs_get+0x58/0x70 fs/kernfs/dir.c:494 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9959 Comm: syz-executor.4 Not tainted 4.14.131 #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 panic+0x1f2/0x426 kernel/panic.c:182 kobject: '(null)' (ffff88805eeed0e8): kobject_cleanup, parent (null) __warn.cold+0x2f/0x36 kernel/panic.c:546 report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 Bluetooth: Can't register HCI device do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:960 RIP: 0010:kernfs_get+0x58/0x70 fs/kernfs/dir.c:494 RSP: 0018:ffff88805a857978 EFLAGS: 00010216 kobject: 'hci2' (ffff88805ec92e28): calling ktype release RAX: 0000000000040000 RBX: ffff888085e6fd20 RCX: ffffc9000ba5b000 RDX: 00000000000015a1 RSI: ffffffff81a99078 RDI: ffff888085e6fd20 RBP: ffff88805a857980 R08: ffff88805e724100 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88805e724100 R12: ffff8880a5c8c380 R13: ffff8880a5a14480 R14: 0000000000000001 R15: 00000000000041ed kernfs_new_node+0x95/0xf0 fs/kernfs/dir.c:680 kernfs_create_dir_ns+0x41/0x140 fs/kernfs/dir.c:999 kobject: '(null)' (ffff88805eeed0e8): calling ktype release sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55 create_dir lib/kobject.c:71 [inline] kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229 kobject_add_internal lib/kobject.c:205 [inline] kobject_add_varg lib/kobject.c:364 [inline] kobject_add+0x11f/0x180 lib/kobject.c:409 device_add+0x383/0x1490 drivers/base/core.c:1809 hci_register_dev+0x2d9/0x810 net/bluetooth/hci_core.c:3118 kobject: 'hci1' (ffff88805bb22428): kobject_cleanup, parent (null) __vhci_create_device+0x2a6/0x560 drivers/bluetooth/hci_vhci.c:139 vhci_create_device drivers/bluetooth/hci_vhci.c:163 [inline] vhci_get_user drivers/bluetooth/hci_vhci.c:219 [inline] vhci_write+0x2a1/0x437 drivers/bluetooth/hci_vhci.c:299 call_write_iter include/linux/fs.h:1777 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x4a7/0x6b0 fs/read_write.c:482 kobject: 'hci2': free name vfs_write+0x198/0x500 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xfd/0x230 fs/read_write.c:582 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459519 RSP: 002b:00007f237b92cc78 EFLAGS: 00000246 kobject: 'hci1' (ffff88805bb22428): calling ktype release ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459519 RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f237b92d6d4 R13: 00000000004c95ff R14: 00000000004e0958 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..