------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff8880251c4978 object type: timer_list hint: hci_cmd_timeout+0x0/0x1e0 WARNING: CPU: 0 PID: 6711 at lib/debugobjects.c:518 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:515 Modules linked in: CPU: 0 UID: 0 PID: 6711 Comm: syz-executor Not tainted 6.11.0-syzkaller-01458-g9410645520e9 #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 cb 8a 40 fd 4c 8b 0b 48 c7 c7 80 99 60 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 eb 63 9b fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 5c 16 5e 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc90014d2f838 EFLAGS: 00010282 RAX: 9f853bb3d36e4200 RBX: ffffffff8c0cc1a0 RCX: ffff88802d6c9e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8c609b00 R08: ffffffff8155b372 R09: fffffbfff1cfa0e0 R10: dffffc0000000000 R11: fffffbfff1cfa0e0 R12: 0000000000000000 R13: ffffffff8c609a18 R14: dffffc0000000000 R15: ffff8880251c4978 FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f853edbc440 CR3: 000000005b008000 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 vhci_release+0x8b/0xd0 drivers/bluetooth/hci_vhci.c:665 __fput+0x24a/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:228 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2f/0x27f0 kernel/exit.c:882 do_group_exit+0x207/0x2c0 kernel/exit.c:1031 __do_sys_exit_group kernel/exit.c:1042 [inline] __se_sys_exit_group kernel/exit.c:1040 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1040 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 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: 0033:0x7ff30517def9 Code: Unable to access opcode bytes at 0x7ff30517decf. RSP: 002b:00007ffdc8346da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff30517def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043 RBP: 00007ff3051dd508 R08: 00007ffdc8344b47 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000003 R14: 00000000ffffffff R15: 00007ffdc8346f50