linux-kernel - [PATCH AUTOSEL 5.4 217/330] ubifs: ubifs_jnl_write

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Date:   Thu, 17 Sep 2020 21:59:17 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Zhihao Cheng <chengzhihao1@...wei.com>,
        Richard Weinberger <richard@....at>,
        Sasha Levin <sashal@...nel.org>, linux-mtd@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.4 217/330] ubifs: ubifs_jnl_write_inode: Fix a memory leak bug

From: Zhihao Cheng <chengzhihao1@...wei.com>

[ Upstream commit 81423c78551654953d746250f1721300b470be0e ]

When inodes with extended attributes are evicted, xent is not freed in one
exit branch.

Signed-off-by: Zhihao Cheng <chengzhihao1@...wei.com>
Fixes: 9ca2d732644484488db3112 ("ubifs: Limit number of xattrs per inode")
Signed-off-by: Richard Weinberger <richard@....at>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/ubifs/journal.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index a6ae2428e4c96..5f2ac5ef0891e 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -906,6 +906,7 @@ int ubifs_jnl_write_inode(struct ubifs_info *c, const struct inode *inode)
 				ubifs_err(c, "dead directory entry '%s', error %d",
 					  xent->name, err);
 				ubifs_ro_mode(c, err);
+				kfree(xent);
 				goto out_release;
 			}
 			ubifs_assert(c, ubifs_inode(xino)->xattr);
-- 
2.25.1