[PATCH] libnuma: checking of sucessfull allocations in numademo

[PATCH] libnuma: checking of sucessfull allocations in numademo

[Petr Holasek]

From: Petr Holasek <pholasek@redhat.com>

This patch is based on BZ 
https://bugzilla.redhat.com/show_bug.cgi?id=707138
where too big argument for numademo caused segfault.

Only simple check of returned pointer from numa_alloc*
calls was added.

Signed-off-by: Petr Holasek <pholasek@redhat.com>

--
diff -up numactl-2.0.7/numademo.c.origin numactl-2.0.7/numademo.c
--- numactl-2.0.7/numademo.c.origin	2011-08-18 06:40:56.617884667 -0400
+++ numactl-2.0.7/numademo.c	2011-08-18 06:38:15.783759565 -0400
@@ -156,6 +156,11 @@ void memtest(char *name, unsigned char *
 	int i;
 	char title[128], result[128];
 
+	if (!mem) {
+		fprintf(stderr,"Failed to allocate %lu bytes of memory. Test \"%s\" exits.\n", msize, name);
+		return;
+	}
+
 #ifdef HAVE_STREAM_LIB
 	if (thistest == STREAM) {
 		do_stream(name, mem);

Re: [PATCH] libnuma: checking of sucessfull allocations in numademo

[Cliff Wickman]

On Thu, Aug 18, 2011 at 07:01:33AM -0400, Petr Holasek wrote:
> From: Petr Holasek <pholasek@redhat.com>
> 
> This patch is based on BZ 
> https://bugzilla.redhat.com/show_bug.cgi?id=707138
> where too big argument for numademo caused segfault.
> 
> Only simple check of returned pointer from numa_alloc*
> calls was added.
> 
> Signed-off-by: Petr Holasek <pholasek@redhat.com>
> 
> --
> diff -up numactl-2.0.7/numademo.c.origin numactl-2.0.7/numademo.c
> --- numactl-2.0.7/numademo.c.origin	2011-08-18 06:40:56.617884667 -0400
> +++ numactl-2.0.7/numademo.c	2011-08-18 06:38:15.783759565 -0400
> @@ -156,6 +156,11 @@ void memtest(char *name, unsigned char *
>  	int i;
>  	char title[128], result[128];
>  
> +	if (!mem) {
> +		fprintf(stderr,"Failed to allocate %lu bytes of memory. Test \"%s\" exits.\n", msize, name);
> +		return;
> +	}
> +
>  #ifdef HAVE_STREAM_LIB
>  	if (thistest == STREAM) {
>  		do_stream(name, mem);

Thanks, Petr.
Yours is now the first patch in 2.0.8-rc1.

-Cliff
-- 
Cliff Wickman
SGI
cpw@sgi.com
(651) 683-3824