linux-kernel - Re: [PATCH 4/5] kernel/debug/kdb/kdb_bp.c: drop negativity check on unsigned value

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Date:	Fri, 18 Jul 2014 19:18:13 +0200
From:	walter harms <wharms@....de>
To:	Andrey Utkin <andrey.krieger.utkin@...il.com>
CC:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	kgdb-bugreport@...ts.sourceforge.net, dcb314@...mail.com,
	jason.wessel@...driver.com
Subject: Re: [PATCH 4/5] kernel/debug/kdb/kdb_bp.c: drop negativity check
 on unsigned value



Am 18.07.2014 17:34, schrieb Andrey Utkin:
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80591
> Reported-by: David Binderman <dcb314@...mail.com>
> Signed-off-by: Andrey Utkin <andrey.krieger.utkin@...il.com>
> ---
>  kernel/debug/kdb/kdb_bp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/debug/kdb/kdb_bp.c b/kernel/debug/kdb/kdb_bp.c
> index 70a5046..f27dfb8 100644
> --- a/kernel/debug/kdb/kdb_bp.c
> +++ b/kernel/debug/kdb/kdb_bp.c
> @@ -39,7 +39,7 @@ static char *kdb_rwtypes[] = {
>  
>  static char *kdb_bptype(kdb_bp_t *bp)
>  {
> -	if (bp->bp_type < 0 || bp->bp_type > 4)
> +	if (bp->bp_type > 4)
>  		return "";
>  
>  	return kdb_rwtypes[bp->bp_type];

i would expect a ckeck for the upper limit with ARRAY_SIZE(bp->bp_type) here.

re,
 wh
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