linux-kernel - [PATCH 5.10 03/38] exfat: avoid incorrectly releasing for root inode

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Date:   Fri, 25 Mar 2022 16:04:47 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chen Li <chenli@...ontech.com>,
        Namjae Jeon <namjae.jeon@...sung.com>,
        Tadeusz Struk <tadeusz.struk@...aro.org>
Subject: [PATCH 5.10 03/38] exfat: avoid incorrectly releasing for root inode

From: Chen Li <chenli@...ontech.com>

commit 839a534f1e853f1aec100d06040c0037b89c2dc3 upstream.

In d_make_root, when we fail to allocate dentry for root inode,
we will iput root inode and returned value is NULL in this function.

So we do not need to release this inode again at d_make_root's caller.

Signed-off-by: Chen Li <chenli@...ontech.com>
Signed-off-by: Namjae Jeon <namjae.jeon@...sung.com>
Cc: Tadeusz Struk <tadeusz.struk@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/exfat/super.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/exfat/super.c
+++ b/fs/exfat/super.c
@@ -690,7 +690,7 @@ static int exfat_fill_super(struct super
 	if (!sb->s_root) {
 		exfat_err(sb, "failed to get the root dentry");
 		err = -ENOMEM;
-		goto put_inode;
+		goto free_table;
 	}
 
 	return 0;