------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88805a14c978 object type: timer_list hint: hci_cmd_timeout+0x0/0x260 net/bluetooth/hci_core.c:408 WARNING: CPU: 3 PID: 10802 at lib/debugobjects.c:514 debug_print_object+0x1a3/0x2b0 lib/debugobjects.c:514 Modules linked in: CPU: 3 UID: 0 PID: 10802 Comm: syz-executor Not tainted 6.12.0-rc3-syzkaller-00044-g2f87d0916ce0 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:debug_print_object+0x1a3/0x2b0 lib/debugobjects.c:514 Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 48 8b 14 dd e0 3c b1 8b 41 56 4c 89 e6 48 c7 c7 40 30 b1 8b e8 9e ff bf fc 90 <0f> 0b 90 90 58 83 05 fd dc 8e 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d RSP: 0018:ffffc90002c17978 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff814e38b9 RDX: ffff8880217b4880 RSI: ffffffff814e38c6 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8bb136e0 R13: ffffffff8b4f6c60 R14: ffffffff8a060c00 R15: ffffc90002c17a88 FS: 0000000000000000(0000) GS:ffff88802b700000(0000) knlGS:0000000000000000 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000027fa4000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:989 [inline] debug_check_no_obj_freed+0x4b8/0x600 lib/debugobjects.c:1019 slab_free_hook mm/slub.c:2273 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x2b3/0x4b0 mm/slub.c:4727 hci_release_dev+0x4d9/0x600 net/bluetooth/hci_core.c:2759 bt_host_release+0x6a/0xb0 net/bluetooth/hci_sysfs.c:94 device_release+0xa1/0x240 drivers/base/core.c:2575 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1e4/0x5a0 lib/kobject.c:737 put_device+0x1f/0x30 drivers/base/core.c:3783 vhci_release+0x81/0xf0 drivers/bluetooth/hci_vhci.c:665 __fput+0x3f6/0xb60 fs/file_table.c:431 task_work_run+0x14e/0x250 kernel/task_work.c:228 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xadd/0x2d70 kernel/exit.c:939 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:1097 ia32_sys_call+0x13f8/0x1bb0 arch/x86/include/generated/asm/syscalls_32.h:253 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fb3579 Code: Unable to access opcode bytes at 0xf7fb354f. RSP: 002b:00000000ff835b8c EFLAGS: 00000286 ORIG_RAX: 00000000000000fc RAX: ffffffffffffffda RBX: 0000000000000043 RCX: 00000000ff835bd8 RDX: 0000000000000000 RSI: 00000000f743bff4 RDI: 00000000f726b056 RBP: 00000000f743bff4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000