Commit 95779fe8 authored Sep 12, 2019 by Linus Torvalds

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fix from Ingo Molnar:
 "Fix a race in the IRQ resend mechanism, which can result in a NULL
  dereference crash"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Prevent NULL pointer dereference in resend_irqs()

parents 840ce8f8 eddf3e9c

kernel/irq/resend.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -36,6 +36,8 @@ static void resend_irqs(unsigned long arg)
		irq = find_first_bit(irqs_resend, nr_irqs);
		clear_bit(irq, irqs_resend);
		desc = irq_to_desc(irq);
		if (!desc)
		continue;
		local_irq_disable();
		desc->handle_irq(desc);
		local_irq_enable();

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