powerpc/crashdump: Do not fail on NULL pointer dereferencing

Signed-off-by: Maxim Uvarov <muvarov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 6f4613dd05ef..341d8af6f33e 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -375,6 +375,9 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
         for_each_irq(i) {
                 struct irq_desc *desc = irq_to_desc(i);
 
+                if (!desc || !desc->chip || !desc->chip->eoi)
+                        continue;
+
                 if (desc->status & IRQ_INPROGRESS)
                         desc->chip->eoi(i);