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-rw-r--r--sys/alpha/alpha/interrupt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/alpha/alpha/interrupt.c b/sys/alpha/alpha/interrupt.c
index 8202712..b1fe3e1 100644
--- a/sys/alpha/alpha/interrupt.c
+++ b/sys/alpha/alpha/interrupt.c
@@ -300,7 +300,7 @@ badaddr_read(addr, size, rptr)
/* disallow further machine checks */
mc_expected = 0;
- if (rptr) {
+ if (rptr && mc_received == 0) {
switch (size) {
case sizeof (u_int8_t):
*(volatile u_int8_t *)rptr = rcpt;
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