From: Qiushi Wu <wu000273@umn.edu>
Date: Thu, 28 May 2020 18:38:04 +0000 (-0500)
Subject: efi/esrt: Fix reference count leak in esre_create_sysfs_entry.
X-Git-Tag: v5.15~3332^2~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4ddf4739be6e375116c375f0a68bf3893ffcee21;p=platform%2Fkernel%2Flinux-starfive.git

efi/esrt: Fix reference count leak in esre_create_sysfs_entry.

kobject_init_and_add() takes reference even when it fails.
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object. Previous
commit "b8eb718348b8" fixed a similar problem.

Fixes: 0bb549052d33 ("efi: Add esrt support")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Link: https://lore.kernel.org/r/20200528183804.4497-1-wu000273@umn.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---

diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
index e3d6926..d591527 100644
--- a/drivers/firmware/efi/esrt.c
+++ b/drivers/firmware/efi/esrt.c
@@ -181,7 +181,7 @@ static int esre_create_sysfs_entry(void *esre, int entry_num)
 		rc = kobject_init_and_add(&entry->kobj, &esre1_ktype, NULL,
 					  "entry%d", entry_num);
 		if (rc) {
-			kfree(entry);
+			kobject_put(&entry->kobj);
 			return rc;
 		}
 	}