debugfs: Directory '200' with parent 'hci0' already present!
list_add double add: new=ffff8880a797c418, prev=ffff8880a797c418, next=ffff8880a9af3e00.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6837 Comm: kworker/u5:1 Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci0 hci_rx_work
RIP: 0010:__list_add_valid+0x8a/0xc0 lib/list_debug.c:29
Code: 74 11 4d 39 f7 74 0c b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 ec d3 f4 88 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 03 cd bc fd <0f> 0b 48 c7 c7 37 d3 f4 88 4c 89 e6 4c 89 f1 31 c0 e8 ed cc bc fd
RSP: 0018:ffffc90005437858 EFLAGS: 00010246
RAX: 0000000000000058 RBX: ffff8880a9af3e08 RCX: d4c141aff9590700
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880a9af3e00 R08: ffffffff815dffc9 R09: ffffed1015d262c0
R10: ffffed1015d262c0 R11: 0000000000000000 R12: ffff8880a797c418
R13: dffffc0000000000 R14: ffff8880a9af3e00 R15: ffff8880a797c418
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000009279000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:67 [inline]
 list_add_tail include/linux/list.h:100 [inline]
 kobj_kset_join lib/kobject.c:196 [inline]
 kobject_add_internal+0x1fa/0xa90 lib/kobject.c:246
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_add+0xef/0x190 lib/kobject.c:442
 device_add+0x53d/0x1a10 drivers/base/core.c:2633
 hci_conn_add_sysfs+0x7c/0xe0 net/bluetooth/hci_sysfs.c:53
 hci_conn_complete_evt net/bluetooth/hci_event.c:2607 [inline]
 hci_event_packet+0x1227c/0x18260 net/bluetooth/hci_event.c:6033
 hci_rx_work+0x236/0x9c0 net/bluetooth/hci_core.c:4705
 process_one_work+0x789/0xfc0 kernel/workqueue.c:2269
 worker_thread+0xaa4/0x1460 kernel/workqueue.c:2415
 kthread+0x37e/0x3a0 drivers/block/aoe/aoecmd.c:1234
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Modules linked in:
---[ end trace 50edcdcab11486ad ]---
RIP: 0010:__list_add_valid+0x8a/0xc0 lib/list_debug.c:29
Code: 74 11 4d 39 f7 74 0c b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 ec d3 f4 88 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 03 cd bc fd <0f> 0b 48 c7 c7 37 d3 f4 88 4c 89 e6 4c 89 f1 31 c0 e8 ed cc bc fd
RSP: 0018:ffffc90005437858 EFLAGS: 00010246
RAX: 0000000000000058 RBX: ffff8880a9af3e08 RCX: d4c141aff9590700
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880a9af3e00 R08: ffffffff815dffc9 R09: ffffed1015d262c0
R10: ffffed1015d262c0 R11: 0000000000000000 R12: ffff8880a797c418
R13: dffffc0000000000 R14: ffff8880a9af3e00 R15: ffff8880a797c418
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000009279000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400