linux-kernel - [PATCH] fs: omfs: use kmemdup() rather than kmalloc+memcpy

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Date:   Mon, 24 Aug 2020 22:17:54 +0100
From:   Alex Dewar <alex.dewar90@...il.com>
To:     Bob Copeland <me@...copeland.com>,
        linux-karma-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Cc:     Alex Dewar <alex.dewar90@...il.com>
Subject: [PATCH] fs: omfs: use kmemdup() rather than kmalloc+memcpy

Issue identified with Coccinelle.

Signed-off-by: Alex Dewar <alex.dewar90@...il.com>
---
 fs/omfs/inode.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index b76ec6b88ded..8867cefa79cf 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -363,12 +363,11 @@ static int omfs_get_imap(struct super_block *sb)
 		bh = sb_bread(sb, block++);
 		if (!bh)
 			goto nomem_free;
-		*ptr = kmalloc(sb->s_blocksize, GFP_KERNEL);
+		*ptr = kmemdup(bh->b_data, sb->s_blocksize, GFP_KERNEL);
 		if (!*ptr) {
 			brelse(bh);
 			goto nomem_free;
 		}
-		memcpy(*ptr, bh->b_data, sb->s_blocksize);
 		if (count < sb->s_blocksize)
 			memset((void *)*ptr + count, 0xff,
 				sb->s_blocksize - count);
-- 
2.28.0