From e501d9f69bfa8dda16fba164dac7922154435c2d Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 9 Nov 2011 10:36:20 +0100 Subject: [PATCH] x86/MSI: fix dump_msi() after c/s 24068:6928172f7ded The function must not blindly take the lock on IRQ descriptors. Signed-off-by: Jan Beulich --- xen/arch/x86/msi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/xen/arch/x86/msi.c b/xen/arch/x86/msi.c index bbed64a47c..2d860069c8 100644 --- a/xen/arch/x86/msi.c +++ b/xen/arch/x86/msi.c @@ -1076,6 +1076,9 @@ static void dump_msi(unsigned char key) unsigned long flags; char type; + if ( !irq_desc_initialized(desc) ) + continue; + spin_lock_irqsave(&desc->lock, flags); entry = desc->msi_desc; -- 2.30.2