From 18e633dd9674c8bf118ea8583bb5a531edc2728a Mon Sep 17 00:00:00 2001
From: Michail Tatas <michail.tatas@gmail.com>
Date: Fri, 7 Aug 2026 01:30:20 +0300
Subject: [PATCH] ipmi: Fix leak in __ipmi_bmc_register

In case that ida_alloc(&ipmi_bmc_ida,...) succeeds and then
platform_device_register() fails, ipmi_bmc_ida is leaked.
Fix by freeing the error path

Signed-off-by: Michail Tatas <michail.tatas@gmail.com>
Message-ID: <anUK_HOy_pCgvsBm@michalis-linux>
Signed-off-by: Corey Minyard <corey@minyard.net>
---
 drivers/char/ipmi/ipmi_msghandler.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 6ff9a15cced8..7634dff99f41 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -3301,6 +3301,7 @@ static int __ipmi_bmc_register(struct ipmi_smi *intf,
 	list_del(&intf->bmc_link);
 	mutex_unlock(&bmc->dyn_mutex);
 	intf->bmc = &intf->tmp_bmc;
+	ida_free(&ipmi_bmc_ida, bmc->pdev.id);
 	put_device(&bmc->pdev.dev);
 	goto out;
 }