> Commit e82b89a6f19bae73fb064d1b3dd91fcefbb478f4 used strcat instead of
> strcpy which can result in an overflow of newlines on the buffer.
...
> --- a/arch/powerpc/kernel/vio.c
> +++ b/arch/powerpc/kernel/vio.c
> @@ -1531,12 +1531,12 @@ static ssize_t modalias_show(struct device *dev,
> struct device_attribute
> *attr,
>
> dn = dev->of_node;
> if (!dn) {
> - strcat(buf, "\n");
> + strcpy(buf, "\n");
> return strlen(buf);
> }
> cp = of_get_property(dn, "compatible", NULL);
> if (!cp) {
> - strcat(buf, "\n");
> + strcpy(buf, "\n");
> return strlen(buf);
> }
Why not just:
buf[0] = '\n';
buf[1] = 0;
return 1;
The assignment to buf[1] might not even be needed.
David
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