linux-kernel - [PATCH 5.16 0800/1017] f2fs: compress: fix to print raw data size in error path of lz4 decompression

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Message-Id: <20220405070417.997536220@linuxfoundation.org>
Date:   Tue,  5 Apr 2022 09:28:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chao Yu <chao.yu@...o.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0800/1017] f2fs: compress: fix to print raw data size in error path of lz4 decompression

From: Chao Yu <chao@...nel.org>

[ Upstream commit d284af43f703760e261b1601378a0c13a19d5f1f ]

In lz4_decompress_pages(), if size of decompressed data is not equal to
expected one, we should print the size rather than size of target buffer
for decompressed data, fix it.

Signed-off-by: Chao Yu <chao.yu@...o.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/f2fs/compress.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 190a3c4d4c91..ced0fd54658c 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -313,10 +313,9 @@ static int lz4_decompress_pages(struct decompress_io_ctx *dic)
 	}
 
 	if (ret != PAGE_SIZE << dic->log_cluster_size) {
-		printk_ratelimited("%sF2FS-fs (%s): lz4 invalid rlen:%zu, "
+		printk_ratelimited("%sF2FS-fs (%s): lz4 invalid ret:%d, "
 					"expected:%lu\n", KERN_ERR,
-					F2FS_I_SB(dic->inode)->sb->s_id,
-					dic->rlen,
+					F2FS_I_SB(dic->inode)->sb->s_id, ret,
 					PAGE_SIZE << dic->log_cluster_size);
 		return -EIO;
 	}
-- 
2.34.1