linux-kernel - Re: [PATCH] btrfs: fix uninitialized warning in btrfs_log

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Date:   Mon, 22 May 2023 23:52:09 +0200
From:   David Sterba <dsterba@...e.cz>
To:     zhangshida <starzhangzsd@...il.com>
Cc:     clm@...com, josef@...icpanda.com, dsterba@...e.com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        zhangshida@...inos.cn, k2ci <kernel-bot@...inos.cn>
Subject: Re: [PATCH] btrfs: fix uninitialized warning in btrfs_log_inode

On Tue, May 16, 2023 at 09:34:30AM +0800, zhangshida wrote:
> From: Shida Zhang <zhangshida@...inos.cn>
> 
> From: Shida Zhang <zhangshida@...inos.cn>
> 
> This fixes the following warning reported by gcc 10 under x86_64:
> 
> ../fs/btrfs/tree-log.c: In function ‘btrfs_log_inode’:
> ../fs/btrfs/tree-log.c:6211:9: error: ‘last_range_start’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
>  6211 |   ret = insert_dir_log_key(trans, log, path, key.objectid,
>       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  6212 |       first_dir_index, last_dir_index);
>       |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../fs/btrfs/tree-log.c:6161:6: note: ‘last_range_start’ was declared here
>  6161 |  u64 last_range_start;
>       |      ^~~~~~~~~~~~~~~~
> 
> Reported-by: k2ci <kernel-bot@...inos.cn>
> Signed-off-by: Shida Zhang <zhangshida@...inos.cn>

Added to misc-next, thanks.