linux-kernel - [PATCH 4.14 155/178] ipmi_si: fix memory leak on new

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Date:   Mon, 18 Dec 2017 16:49:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
        Corey Minyard <cminyard@...sta.com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.14 155/178] ipmi_si: fix memory leak on new_smi

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Colin Ian King <colin.king@...onical.com>


[ Upstream commit c0a32fe13cd323ca9420500b16fd69589c9ba91e ]

The error exit path omits kfree'ing the allocated new_smi, causing a memory
leak.  Fix this by kfree'ing new_smi.

Detected by CoverityScan, CID#14582571 ("Resource Leak")

Fixes: 7e030d6dff71 ("ipmi: Prefer ACPI system interfaces over SMBIOS ones")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Corey Minyard <cminyard@...sta.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/char/ipmi/ipmi_si_intf.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -3469,6 +3469,7 @@ static int add_smi(struct smi_info *new_
 				 ipmi_addr_src_to_str(new_smi->addr_source),
 				 si_to_str[new_smi->si_type]);
 			rv = -EBUSY;
+			kfree(new_smi);
 			goto out_err;
 		}
 	}