Bluetooth: hci4: Opcode 0x0401 failed: -4 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88807559c978 object type: timer_list hint: hci_cmd_timeout+0x0/0x1e0 WARNING: CPU: 0 PID: 8451 at lib/debugobjects.c:518 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:515 Modules linked in: CPU: 0 UID: 0 PID: 8451 Comm: syz.4.882 Not tainted 6.10.0-syzkaller-12642-gb9e7fc0aeda7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:515 Code: e8 eb 03 43 fd 4c 8b 0b 48 c7 c7 e0 72 60 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 9b d9 9d fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 0c 16 60 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc90003767838 EFLAGS: 00010282 RAX: 01de7cc20743e300 RBX: ffffffff8c0cc480 RCX: 0000000000040000 RDX: ffffc90009c89000 RSI: 000000000000cd96 RDI: 000000000000cd97 RBP: ffffffff8c607460 R08: ffffffff81559432 R09: fffffbfff1cf9f88 R10: dffffc0000000000 R11: fffffbfff1cf9f88 R12: 0000000000000000 R13: ffffffff8c607378 R14: dffffc0000000000 R15: ffff88807559c978 FS: 00007fe6a00a86c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32414ff8 CR3: 0000000064c52000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:990 [inline] debug_check_no_obj_freed+0x45b/0x580 lib/debugobjects.c:1020 slab_free_hook mm/slub.c:2219 [inline] slab_free mm/slub.c:4473 [inline] kfree+0x10f/0x360 mm/slub.c:4594 hci_release_dev+0x1525/0x16b0 net/bluetooth/hci_core.c:2753 bt_host_release+0x83/0x90 net/bluetooth/hci_sysfs.c:94 device_release+0x99/0x1c0 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22f/0x480 lib/kobject.c:737 hci_dev_put include/net/bluetooth/hci_core.h:1586 [inline] hci_inquiry+0x21a/0x810 net/bluetooth/hci_core.c:400 sock_do_ioctl+0x158/0x460 net/socket.c:1222 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe69f3773b9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe6a00a8048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe69f505f80 RCX: 00007fe69f3773b9 RDX: 0000000020000080 RSI: 00000000800448f0 RDI: 0000000000000004 RBP: 00007fe69f3e48e6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe69f505f80 R15: 00007ffd6464edc8