add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pci/irq.c
..
..
@@ -44,6 +44,8 @@
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 	va_start(ap, fmt);
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 	devname = kvasprintf(GFP_KERNEL, fmt, ap);
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 	va_end(ap);
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+	if (!devname)
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+		return -ENOMEM;
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 	ret = request_threaded_irq(pci_irq_vector(dev, nr), handler, thread_fn,
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 				   irqflags, devname, dev_id);