linux-kernel - Re: [PATCH 02/16] MPILIB: Add a missing ENOMEM check [ver #2]

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Date:	Wed, 30 Nov 2011 09:28:11 -0600
From:	Serge Hallyn <serge.hallyn@...onical.com>
To:	David Howells <dhowells@...hat.com>
CC:	keyrings@...ux-nfs.org, linux-crypto@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, dmitry.kasatkin@...el.com,
	zohar@...ux.vnet.ibm.com, arjan.van.de.ven@...el.com,
	alan.cox@...el.com
Subject: Re: [PATCH 02/16] MPILIB: Add a missing ENOMEM check [ver #2]

On 11/29/2011 05:43 PM, David Howells wrote:
> Add a missing ENOMEM check.
>
> Signed-off-by: David Howells<dhowells@...hat.com>
> ---
>
>   lib/mpi/mpicoder.c |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>
>
> diff --git a/lib/mpi/mpicoder.c b/lib/mpi/mpicoder.c
> index fe84bb9..6e225a8 100644
> --- a/lib/mpi/mpicoder.c
> +++ b/lib/mpi/mpicoder.c
> @@ -255,6 +255,8 @@ void *mpi_get_buffer(MPI a, unsigned *nbytes, int *sign)
>   	if (!n)
>   		n++;		/* avoid zero length allocation */
>   	p = buffer = kmalloc(n, GFP_KERNEL);
> +	if (p<  0)
> +		return NULL;

Sorry, maybe i'm having a confused morning, but shouldn't this check be 
for p==NULL rather than p<0?

>
>   	for (i = a->nlimbs - 1; i>= 0; i--) {
>   		alimb = a->d[i];
>
> --
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