linux-kernel - Re: [PATCH 1/1] fs/gfs2/lock_dlm.c: replace count*size kzalloc by kcalloc

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Message-ID: <53ABFE3E.80500@redhat.com>
Date:	Thu, 26 Jun 2014 12:04:30 +0100
From:	Steven Whitehouse <swhiteho@...hat.com>
To:	Fabian Frederick <fabf@...net.be>, linux-kernel@...r.kernel.org
CC:	cluster-devel@...hat.com
Subject: Re: [PATCH 1/1] fs/gfs2/lock_dlm.c: replace count*size kzalloc by
 kcalloc

Hi,

Now in the -nmw git tree. Thanks,

Steve.

On 25/06/14 19:40, Fabian Frederick wrote:
> kcalloc manages count*sizeof overflow.
>
> Cc: Steven Whitehouse <swhiteho@...hat.com>
> Cc: cluster-devel@...hat.com
> Signed-off-by: Fabian Frederick <fabf@...net.be>
> ---
>   fs/gfs2/lock_dlm.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
> index 91f274d..4fafea1 100644
> --- a/fs/gfs2/lock_dlm.c
> +++ b/fs/gfs2/lock_dlm.c
> @@ -1036,8 +1036,8 @@ static int set_recover_size(struct gfs2_sbd *sdp, struct dlm_slot *slots,
>   
>   	new_size = old_size + RECOVER_SIZE_INC;
>   
> -	submit = kzalloc(new_size * sizeof(uint32_t), GFP_NOFS);
> -	result = kzalloc(new_size * sizeof(uint32_t), GFP_NOFS);
> +	submit = kcalloc(new_size, sizeof(uint32_t), GFP_NOFS);
> +	result = kcalloc(new_size, sizeof(uint32_t), GFP_NOFS);
>   	if (!submit || !result) {
>   		kfree(submit);
>   		kfree(result);

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