linux-kernel - [PATCH] isofs: release buffer head before return

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Date:   Mon, 18 Jan 2021 04:04:55 -0800
From:   Pan Bian <bianpan2016@....com>
To:     Jan Kara <jack@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Pan Bian <bianpan2016@....com>
Subject: [PATCH] isofs: release buffer head before return

Release the buffer header before returning error code.

Fixes: 2deb1acc653c ("isofs: fix access to unallocated memory when reading corrupted filesystem")
Signed-off-by: Pan Bian <bianpan2016@....com>
---
 fs/isofs/dir.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index f0fe641893a5..b9e6a7ec78be 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -152,6 +152,7 @@ static int do_isofs_readdir(struct inode *inode, struct file *file,
 			printk(KERN_NOTICE "iso9660: Corrupted directory entry"
 			       " in block %lu of inode %lu\n", block,
 			       inode->i_ino);
+			brelse(bh);
 			return -EIO;
 		}
 
-- 
2.17.1