------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88805d4141f8 object type: percpu_counter hint: 0x0 WARNING: CPU: 0 PID: 5939 at lib/debugobjects.c:615 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:612 Modules linked in: CPU: 0 UID: 0 PID: 5939 Comm: udevd Not tainted 6.13.0-rc6-next-20250107-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:612 Code: e8 7b 14 39 fd 4c 8b 0b 48 c7 c7 00 0e 60 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 cb 7f 93 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 b8 87 2e 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc9000431fa58 EFLAGS: 00010282 RAX: 3cecf2104deed500 RBX: ffffffff8c626760 RCX: ffff888026ca5a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8c600f80 R08: ffffffff817ff732 R09: fffffbfff1cfa188 R10: dffffc0000000000 R11: fffffbfff1cfa188 R12: 0000000000000000 R13: ffffffff8c600e98 R14: dffffc0000000000 R15: ffff88805d4141f8 FS: 00007fdc5eeeac80(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555570b85588 CR3: 00000000797ee000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] debug_check_no_obj_freed+0x45b/0x580 lib/debugobjects.c:1129 slab_free_hook mm/slub.c:2284 [inline] slab_free mm/slub.c:4609 [inline] kfree+0x115/0x430 mm/slub.c:4757 btrfs_free_stale_devices+0x55b/0x5f0 fs/btrfs/volumes.c:562 btrfs_scan_one_device+0xae4/0xdb0 btrfs_control_ioctl+0x165/0x410 fs/btrfs/super.c:2243 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892 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: 0033:0x7fdc5eb1ad49 Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffff4e61c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdc5eb1ad49 RDX: 00007ffff4e61c78 RSI: 0000000090009427 RDI: 0000000000000009 RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff4e62cb8 R14: 000055fbf3189a40 R15: 00007ffff4e639d8 </TASK>