list_add double add: new=ffff888077508540, prev=ffff888077508540, next=ffff888012717000. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:33! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 3605 Comm: kworker/u5:1 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Workqueue: hci0 hci_rx_work RIP: 0010:__list_add_valid.cold+0x42/0x58 lib/list_debug.c:33 Code: e8 b4 cf f0 ff 0f 0b 48 c7 c7 c0 34 49 8a e8 a6 cf f0 ff 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 c0 36 49 8a e8 8f cf f0 ff <0f> 0b 48 89 f1 48 c7 c7 40 36 49 8a 4c 89 e6 e8 7b cf f0 ff 0f 0b RSP: 0018:ffffc90003b3f800 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffff88807ddb9298 RCX: 0000000000000000 RDX: ffff88801e01d7c0 RSI: ffffffff81620448 RDI: fffff52000767ef2 RBP: ffff888077508540 R08: 0000000000000058 R09: 0000000000000000 R10: 0000000080000001 R11: 6464615f7473696c R12: ffff888012717000 R13: ffff888077508550 R14: ffff888077508558 R15: ffff888077508540 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f906fdcfc70 CR3: 0000000074b55000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:69 [inline] list_add_tail include/linux/list.h:102 [inline] kobj_kset_join lib/kobject.c:164 [inline] kobject_add_internal+0x18f/0x8f0 lib/kobject.c:214 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:410 device_add+0x368/0x1e90 drivers/base/core.c:3452 hci_conn_add_sysfs+0x9b/0x1b0 net/bluetooth/hci_sysfs.c:53 hci_le_cis_estabilished_evt+0x57c/0xae0 net/bluetooth/hci_event.c:6797 hci_le_meta_evt+0x2b8/0x510 net/bluetooth/hci_event.c:7108 hci_event_func net/bluetooth/hci_event.c:7438 [inline] hci_event_packet+0x63d/0xfd0 net/bluetooth/hci_event.c:7493 hci_rx_work+0xae7/0x1230 net/bluetooth/hci_core.c:4007 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid.cold+0x42/0x58 lib/list_debug.c:33 Code: e8 b4 cf f0 ff 0f 0b 48 c7 c7 c0 34 49 8a e8 a6 cf f0 ff 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 c0 36 49 8a e8 8f cf f0 ff <0f> 0b 48 89 f1 48 c7 c7 40 36 49 8a 4c 89 e6 e8 7b cf f0 ff 0f 0b RSP: 0018:ffffc90003b3f800 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffff88807ddb9298 RCX: 0000000000000000 RDX: ffff88801e01d7c0 RSI: ffffffff81620448 RDI: fffff52000767ef2 RBP: ffff888077508540 R08: 0000000000000058 R09: 0000000000000000 R10: 0000000080000001 R11: 6464615f7473696c R12: ffff888012717000 R13: ffff888077508550 R14: ffff888077508558 R15: ffff888077508540 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f906fdcfc70 CR3: 0000000074b55000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400