--- linux-2.6.11-rc1/kernel/printk.c	2005-01-14 12:36:00 +0100
+++ linux-2.6.11-rc1-vs1.9.4-rc2/kernel/printk.c	2005-01-15 11:27:52 +0100
@@ -524,6 +527,8 @@ asmlinkage int printk(const char *fmt, .
 	return r;
 }
 
+static volatile int printk_cpu = -1;
+
 asmlinkage int vprintk(const char *fmt, va_list args)
 {
 	unsigned long flags;
--- linux-2.6.11-rc1/kernel/printk.c	2005-01-14 12:36:00 +0100
+++ linux-2.6.11-rc1-vs1.9.4-rc2/kernel/printk.c	2005-01-15 11:27:52 +0100
@@ -532,11 +537,12 @@ asmlinkage int vprintk(const char *fmt, 
 	static char printk_buf[1024];
 	static int log_level_unknown = 1;
 
-	if (unlikely(oops_in_progress))
+	if (unlikely(oops_in_progress && printk_cpu == smp_processor_id()))
 		zap_locks();
 
 	/* This stops the holder of console_sem just where we want him */
 	spin_lock_irqsave(&logbuf_lock, flags);
+	printk_cpu = smp_processor_id();
 
 	/* Emit the output into the temporary buffer */
 	printed_len = vscnprintf(printk_buf, sizeof(printk_buf), fmt, args);