Linux kernel: memory leak in arch/powerpc/platforms/powernv/opal-irqchip.c: opal_event_init()

Hi,

This bug report is misaddressed. Per upstream's preference and common sense (given how many issue reports there are against the Linux kernel), most Linux kernel (maybe-)issues should first be reported to Linux kernel maintainers/lists or (if you're reasonably sure of significant security relevance) to the Linux kernel security team, and only then (if relevant) maybe also to general security lists. Occasional exceptions exist, such as for publicly exploited issues, but if you're new to this chances are that you should play by the rules, not claim an exception.

Quoted 2 lines

in the newest linux release version, in /arch/powerpc/platforms/powernv/opal-irqchip.c file , the 
opal_event_init function, the variable "name"defined in line 270, and is alloced memory in line 274 or 276, but not free, cause many times memory leak, and most old release versions have the problem.

The code in question is:

int __init opal_event_init(void)
{
[...]

	/* Install interrupt handlers */
	for (i = 0; i < opal_irq_count; i++) {
		struct resource *r = &opal_irqs[i];
		const char *name;

		/* Prefix name */
		if (r->name && strlen(r->name))
			name = kasprintf(GFP_KERNEL, "opal-%s", r->name);
		else
			name = kasprintf(GFP_KERNEL, "opal");

		if (!name)
			continue;
		/* Install interrupt handler */
		rc = request_irq(r->start, opal_interrupt, r->flags & IRQD_TRIGGER_MASK,
				 name, NULL);
		if (rc) {
			pr_warn("Error %d requesting OPAL irq %d\n", rc, (int)r->start);
			continue;
		}
	}

I'm CC'ing this to some maintainers in case they want to add to the "if (rc) {" block, if only to silence static analysis tools, but other than that I see nothing to do on this report.