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-rw-r--r--sys/compat/svr4/svr4_util.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/compat/svr4/svr4_util.h b/sys/compat/svr4/svr4_util.h
index 66902dd..54ed430 100644
--- a/sys/compat/svr4/svr4_util.h
+++ b/sys/compat/svr4/svr4_util.h
@@ -42,7 +42,10 @@
#include <sys/uio.h>
#ifdef DEBUG_SVR4
-#define DPRINTF(a) uprintf a;
+#define DPRINTF(a) do { \
+ mtx_lock(&Giant); \
+ uprintf a; \
+} while (0)
#else
#define DPRINTF(a)
#endif
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