linux-kernel - [PATCH 5.10 71/74] ext4: fix incorrect type issue during replay_del

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Message-Id: <20220207103759.557358261@linuxfoundation.org>
Date:   Mon,  7 Feb 2022 12:07:09 +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, kernel test robot <lkp@...el.com>,
        stable@...nel.org, Xin Yin <yinxin.x@...edance.com>,
        Ritesh Harjani <riteshh@...ux.ibm.com>,
        Theodore Tso <tytso@....edu>
Subject: [PATCH 5.10 71/74] ext4: fix incorrect type issue during replay_del_range

From: Xin Yin <yinxin.x@...edance.com>

commit 8fca8a2b0a822f7936130af7299d2fd7f0a66714 upstream.

should not use fast commit log data directly, add le32_to_cpu().

Reported-by: kernel test robot <lkp@...el.com>
Fixes: 0b5b5a62b945 ("ext4: use ext4_ext_remove_space() for fast commit replay delete range")
Cc: stable@...nel.org
Signed-off-by: Xin Yin <yinxin.x@...edance.com>
Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>
Link: https://lore.kernel.org/r/20220126063146.2302-1-yinxin.x@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/ext4/fast_commit.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -1771,8 +1771,9 @@ ext4_fc_replay_del_range(struct super_bl
 	}
 
 	down_write(&EXT4_I(inode)->i_data_sem);
-	ret = ext4_ext_remove_space(inode, lrange.fc_lblk,
-				lrange.fc_lblk + lrange.fc_len - 1);
+	ret = ext4_ext_remove_space(inode, le32_to_cpu(lrange.fc_lblk),
+				le32_to_cpu(lrange.fc_lblk) +
+				le32_to_cpu(lrange.fc_len) - 1);
 	up_write(&EXT4_I(inode)->i_data_sem);
 	if (ret)
 		goto out;