Re: [PATCH v2 next] drivers/md/md: Use bounded strings ops when setting disk->disk_name

[David Laight <david.laight.linux@gmail.com>]

On Fri, 26 Jun 2026 08:51:40 +0000
sashiko-bot@kernel.org wrote:

> Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
> - [Low] Inconsistent coding style for the sizeof operator in newly added code.
> --
> 
> commit 663613700e83a5bb9c1749d80b4fae68752645fb
> Author: David Laight <david.laight.linux@gmail.com>
> 
> drivers/md/md: Use bounded strings ops when setting disk->disk_name
> 
> This commit replaces unbounded strcpy() and sprintf() with bounded strscpy()
> and snprintf() operations when setting the disk_name in md_alloc() to improve
> safety.
> 
> > diff --git a/drivers/md/md.c b/drivers/md/md.c
> > index d1465bcd86c81..afbdc52a11270 100644
> > --- a/drivers/md/md.c
> > +++ b/drivers/md/md.c
> > @@ -6354,11 +6354,11 @@ struct mddev *md_alloc(dev_t dev, char *name)  
> [ ... ]
> >  	if (name)
> > -		strcpy(disk->disk_name, name);
> > +		strscpy(disk->disk_name, name);
> >  	else if (partitioned)
> > -		sprintf(disk->disk_name, "md_d%d", unit);
> > +		snprintf(disk->disk_name, sizeof(disk->disk_name), "md_d%d", unit);
> >  	else
> > -		sprintf(disk->disk_name, "md%d", unit);
> > +		snprintf(disk->disk_name, sizeof (disk->disk_name), "md%d", unit);  
> 
> [Severity: Low]
> This isn't a bug, but there is an inconsistent coding style for the sizeof
> operator here in md_alloc(). The adjacent branch uses sizeof(disk->disk_name)
> without a space, while this newly added branch includes a space. The kernel
> coding style prefers no space after sizeof.
> 

B****r I only fixed one of them :-(

	David