linux-kernel - [PATCH] cxl: Fix kobject memleak

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Date:   Tue, 2 Jun 2020 20:07:33 +0800
From:   Wang Hai <wanghai38@...wei.com>
To:     <fbarrat@...ux.ibm.com>, <ajd@...ux.ibm.com>, <arnd@...db.de>,
        <gregkh@...uxfoundation.org>
CC:     <mpe@...erman.id.au>, <imunsie@....ibm.com>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
        <wanghai38@...wei.com>
Subject: [PATCH] cxl: Fix kobject memleak

Currently the error return path from kobject_init_and_add() is not
followed by a call to kobject_put() - which means we are leaking
the kobject.

Fix it by adding a call to kobject_put() in the error path of
kobject_init_and_add().

Fixes: b087e6190ddc ("cxl: Export optional AFU configuration record in sysfs")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wang Hai <wanghai38@...wei.com>
---
 drivers/misc/cxl/sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c
index f0263d1..d97a243 100644
--- a/drivers/misc/cxl/sysfs.c
+++ b/drivers/misc/cxl/sysfs.c
@@ -624,7 +624,7 @@ static struct afu_config_record *cxl_sysfs_afu_new_cr(struct cxl_afu *afu, int c
 	rc = kobject_init_and_add(&cr->kobj, &afu_config_record_type,
 				  &afu->dev.kobj, "cr%i", cr->cr);
 	if (rc)
-		goto err;
+		goto err1;
 
 	rc = sysfs_create_bin_file(&cr->kobj, &cr->config_attr);
 	if (rc)
-- 
1.8.3.1