Bluetooth: hci0: Opcode 0x0c20 failed: -4 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88807beb8978 object type: timer_list hint: hci_cmd_timeout+0x0/0x1e0 WARNING: CPU: 0 PID: 9249 at lib/debugobjects.c:518 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:515 Modules linked in: CPU: 0 UID: 0 PID: 9249 Comm: syz.0.950 Not tainted 6.11.0-rc6-syzkaller-01487-g3cfb5aa10cb7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:515 Code: e8 eb 91 40 fd 4c 8b 0b 48 c7 c7 80 97 60 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 bb 6f 9b fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 2c 8a 5e 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc90002d17838 EFLAGS: 00010282 RAX: 9ba364cb344b5000 RBX: ffffffff8c0cc1a0 RCX: 0000000000040000 RDX: ffffc900102a9000 RSI: 000000000000cd7e RDI: 000000000000cd7f RBP: ffffffff8c609900 R08: ffffffff8155b372 R09: fffffbfff1cfa0e0 R10: dffffc0000000000 R11: fffffbfff1cfa0e0 R12: 0000000000000000 R13: ffffffff8c609818 R14: dffffc0000000000 R15: ffff88807beb8978 FS: 00007f66a3cd66c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ec18ff8 CR3: 0000000024b00000 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:2223 [inline] slab_free mm/slub.c:4477 [inline] kfree+0x10f/0x360 mm/slub.c:4598 hci_release_dev+0x1525/0x16b0 net/bluetooth/hci_core.c:2759 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:1581 [inline] hci_dev_cmd+0x296/0xa50 net/bluetooth/hci_core.c:763 sock_do_ioctl+0x158/0x460 net/socket.c:1228 sock_ioctl+0x629/0x8e0 net/socket.c:1347 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: 0033:0x7f66a2f7def9 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:00007f66a3cd6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f66a3135f80 RCX: 00007f66a2f7def9 RDX: 00000000200000c0 RSI: 00000000400448de RDI: 0000000000000005 RBP: 00007f66a2ff0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f66a3135f80 R15: 00007ffc6eabe498