[PATCH] [KDUMP] pending interrupts problem

[ebiederm@xmission.com (Eric W. Biederman)]

Being lazy does this patch fix the problem for you?

It looks like this is enough to keep the kernel going
in the face of unexpected IPIs ...

Eric

---

 arch/i386/kernel/smp.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

applies-to: e6a6c8ed12ba1ef7fa376fa3993e3c329e9f294a
195ab3620ba410697ad78957226c5493d55dd2ee
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 218d725..3d33125 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -560,6 +560,7 @@ int smp_call_function (void (*func) (voi
 	if (wait)
 		while (atomic_read(&data.finished) != cpus)
 			cpu_relax();
+	call_data = NULL;
 	spin_unlock(&call_lock);
 
 	return 0;
@@ -609,6 +610,14 @@ fastcall void smp_call_function_interrup
 	int wait = call_data->wait;
 
 	ack_APIC_irq();
+
+	/* Ignore spurious IPIs */
+	if (!call_data)
+		return;
+
+	func = call_data->func;
+	info = call_data->info;
+	wait = call_data->wait;
 	/*
 	 * Notify initiating CPU that I've grabbed the data and am
 	 * about to execute the function
-
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