linux-kernel - Re: [PATCH] ext4: fix incorrect type issue during replay_del

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Message-ID: <20220127051337.oc6ibems7mm6bhxp@riteshh-domain>
Date:   Thu, 27 Jan 2022 10:43:37 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     Xin Yin <yinxin.x@...edance.com>
Cc:     harshadshirwadkar@...il.com, tytso@....edu,
        adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] ext4: fix incorrect type issue during replay_del_range

On 22/01/26 02:31PM, Xin Yin wrote:
> 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")
> Signed-off-by: Xin Yin <yinxin.x@...edance.com>

Yes, a required change indeed.
Since the patch marked as fixes was cc'd to stable, so this might be requird as
well.

Reviewed-by: Ritesh Harjani <riteshh@...ux.ibm.com>

> ---
>  fs/ext4/fast_commit.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
> index ccd2b216d6ba..488347b4c8b0 100644
> --- a/fs/ext4/fast_commit.c
> +++ b/fs/ext4/fast_commit.c
> @@ -1798,8 +1798,9 @@ ext4_fc_replay_del_range(struct super_block *sb, struct ext4_fc_tl *tl,
>  	}
>
>  	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) {
>  		iput(inode);
> --
> 2.25.1
>