kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) Bluetooth: Can't register HCI device Bluetooth: Can't register HCI device Bluetooth: Can't register HCI device WARNING: CPU: 1 PID: 8778 at fs/kernfs/dir.c:494 kernfs_get.part.0+0x73/0x90 fs/kernfs/dir.c:494 kobject: 'bluetooth' (00000000a62c0bd6): kobject_add_internal: parent: 'virtual', set: '(null)' Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8778 Comm: syz-executor271 Not tainted 5.0.0-rc6+ #70 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 kobject: 'hci2' (000000009caee6d5): kobject_add_internal: parent: 'bluetooth', set: 'devices' __warn.cold+0x20/0x45 kernel/panic.c:571 kobject: 'hci2' (000000009caee6d5): kobject_uevent_env report_bug+0x263/0x2b0 lib/bug.c:186 kobject: 'hci2' (000000009caee6d5): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 kobject: 'hci1' (00000000cd4f72d7): kobject_add_internal: parent: 'bluetooth', set: 'devices' invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:kernfs_get.part.0+0x73/0x90 fs/kernfs/dir.c:494 Code: e6 e8 71 d0 9d ff 45 85 e4 74 1a e8 e7 ce 9d ff be 04 00 00 00 48 89 df e8 da a6 d4 ff f0 ff 03 5b 41 5c 5d c3 e8 cd ce 9d ff <0f> 0b eb dd 48 89 df e8 01 cd d4 ff eb c1 0f 1f 44 00 00 66 2e 0f RSP: 0018:ffff8880a4f37840 EFLAGS: 00010293 RAX: ffff888097eac280 RBX: ffff8880a35f0b60 RCX: ffffffff81d2122f RDX: 0000000000000000 RSI: ffffffff81d21253 RDI: 0000000000000005 kobject: 'hci3' (00000000f37e76a3): kobject_add_internal: parent: 'bluetooth', set: 'devices' RBP: ffff8880a4f37850 R08: ffff888097eac280 R09: ffffed10146be16d kobject: 'hci1' (00000000cd4f72d7): kobject_uevent_env R10: ffffed10146be16c R11: ffff8880a35f0b63 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 kobject: 'hci1' (00000000cd4f72d7): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' kernfs_get fs/kernfs/dir.c:493 [inline] kernfs_new_node+0xb8/0x130 fs/kernfs/dir.c:698 kernfs_create_dir_ns+0x52/0x160 fs/kernfs/dir.c:1021 kobject: 'hci3' (00000000f37e76a3): kobject_uevent_env sysfs_create_dir_ns+0x131/0x2a0 fs/sysfs/dir.c:59 kobject: 'rfkill665' (00000000185e8b43): kobject_add_internal: parent: 'hci2', set: 'devices' create_dir lib/kobject.c:88 [inline] kobject_add_internal lib/kobject.c:247 [inline] kobject_add_internal.cold+0xe5/0x5d4 lib/kobject.c:217 kobject_add_varg lib/kobject.c:382 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:426 kobject: 'hci3' (00000000f37e76a3): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' kobject: 'rfkill665' (00000000185e8b43): kobject_uevent_env device_add+0x3d5/0x1870 drivers/base/core.c:1912 kobject: 'rfkill665' (00000000185e8b43): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill665' kobject: 'rfkill666' (00000000cce8613c): kobject_add_internal: parent: 'hci1', set: 'devices' hci_register_dev+0x304/0x880 net/bluetooth/hci_core.c:3261 __vhci_create_device+0x2d0/0x5a0 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+0x2d0/0x470 drivers/bluetooth/hci_vhci.c:299 call_write_iter include/linux/fs.h:1863 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x613/0x8e0 fs/read_write.c:487 kobject: 'rfkill666' (00000000cce8613c): kobject_uevent_env vfs_write+0x20c/0x580 fs/read_write.c:549 ksys_write+0xea/0x1f0 fs/read_write.c:598 kobject: 'rfkill665' (00000000185e8b43): kobject_uevent_env kobject: 'rfkill666' (00000000cce8613c): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill666' kobject: 'hci4' (00000000ebea551c): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'hci4' (00000000ebea551c): kobject_uevent_env kobject: 'rfkill665' (00000000185e8b43): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill665' __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 kobject: 'rfkill667' (000000007a07372e): kobject_add_internal: parent: 'hci3', set: 'devices' do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 kobject: 'rfkill667' (000000007a07372e): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'rfkill666' (00000000cce8613c): kobject_uevent_env RIP: 0033:0x440e69 kobject: 'rfkill667' (000000007a07372e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill667' Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc050456d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000440e69 RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000000fca7 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000002590880 R11: 0000000000000246 R12: 0000000000401d00 R13: 0000000000401d90 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..