linux-kernel - Re: [PATCH] fs/btrfs: Fix uninitialized variable

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Date:   Mon, 3 May 2021 10:23:22 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Khaled ROMDHANI <khaledromdhani216@...il.com>
Cc:     clm@...com, josef@...icpanda.com, dsterba@...e.com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] fs/btrfs: Fix uninitialized variable

On Sat, May 01, 2021 at 11:50:46PM +0100, Khaled ROMDHANI wrote:
> Fix the warning: variable 'zone' is used
> uninitialized whenever '?:' condition is true.
> 
> Fix that by preventing the code to reach
> the last assertion. If the variable 'mirror'
> is invalid, the assertion fails and we return
> immediately.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Khaled ROMDHANI <khaledromdhani216@...il.com>
> ---

This is not how you send a v4 patch...  v2 patches have to apply to the
original code and not on top of the patched code.

I sort of think you should find a different thing to work on.  This code
works fine as-is.  Just leave it and try to find a real bug and fix that
instead.

regards,
dan carpenter