linux-kernel - [PATCH 6/7] UBI: Fix memory leak in ubi_attach

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Date:	Sat, 28 Sep 2013 15:55:15 +0200
From:	Richard Weinberger <richard@....at>
To:	dedekind1@...il.com
Cc:	richard.genoud@...il.com, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>
Subject: [PATCH 6/7] UBI: Fix memory leak in ubi_attach_fastmap() error path

On error we have to free all three temporary lists.

Reported-by: Richard Genoud <richard.genoud@...il.com>
Signed-off-by: Richard Weinberger <richard@....at>
---
 drivers/mtd/ubi/fastmap.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 05067f5..4cfc8da 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -841,6 +841,19 @@ static int ubi_attach_fastmap(struct ubi_device *ubi,
 fail_bad:
 	ret = UBI_BAD_FASTMAP;
 fail:
+	list_for_each_entry_safe(tmp_aeb, _tmp_aeb, &used, u.list) {
+		kmem_cache_free(ai->aeb_slab_cache, tmp_aeb);
+		list_del(&tmp_aeb->u.list);
+	}
+	list_for_each_entry_safe(tmp_aeb, _tmp_aeb, &eba_orphans, u.list) {
+		kmem_cache_free(ai->aeb_slab_cache, tmp_aeb);
+		list_del(&tmp_aeb->u.list);
+	}
+	list_for_each_entry_safe(tmp_aeb, _tmp_aeb, &free, u.list) {
+		kmem_cache_free(ai->aeb_slab_cache, tmp_aeb);
+		list_del(&tmp_aeb->u.list);
+	}
+
 	return ret;
 }
 
-- 
1.8.3.1

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