diff --git a/sys/kern/sys_pipe.c b/sys/kern/sys_pipe.c
index f3c3c0e..bce0032 100644
--- a/sys/kern/sys_pipe.c
+++ b/sys/kern/sys_pipe.c
@@ -129,6 +129,7 @@ __FBSDID("$FreeBSD$");
 #include <vm/vm_page.h>
 #include <vm/uma.h>
 
+#define doreport(pipe)	printf("%s:%d unchecked error for pipe %p\n", pipe)
 /*
  * Use this define if you want to disable *fancy* VM things.  Expect an
  * approx 30% decrease in transfer rate.  This could be useful for
@@ -1011,7 +1012,8 @@ retry:
 		pipeunlock(wpipe);
 		error = msleep(wpipe, PIPE_MTX(wpipe), PRIBIO | PCATCH,
 		    "pipdwt", 0);
-		pipelock(wpipe, 0);
+		if (pipelock(wpipe, 0) != 0)
+			doreport(wpipe);
 	}
 
 	if (wpipe->pipe_state & PIPE_EOF)
@@ -1119,7 +1121,8 @@ pipe_write(fp, uio, active_cred, flags, td)
 	while (uio->uio_resid) {
 		int space;
 
-		pipelock(wpipe, 0);
+		if (pipelock(wpipe, 0) != 0)
+			doreport(wpipe);
 		if (wpipe->pipe_state & PIPE_EOF) {
 			pipeunlock(wpipe);
 			error = EPIPE;
@@ -1275,7 +1278,8 @@ pipe_write(fp, uio, active_cred, flags, td)
 		}
 	}
 
-	pipelock(wpipe, 0);
+	if (pipelock(wpipe, 0) != 0);
+		doreport(wpipe);
 	--wpipe->pipe_busy;
 
 	if ((wpipe->pipe_busy == 0) && (wpipe->pipe_state & PIPE_WANT)) {
@@ -1640,7 +1644,8 @@ pipeclose(cpipe)
 	KASSERT(cpipe != NULL, ("pipeclose: cpipe == NULL"));
 
 	PIPE_LOCK(cpipe);
-	pipelock(cpipe, 0);
+	if (pipelock(cpipe, 0) != 0)
+		doreport(cpipe);
 	pp = cpipe->pipe_pair;
 
 	pipeselwakeup(cpipe);
@@ -1655,7 +1660,8 @@ pipeclose(cpipe)
 		cpipe->pipe_state |= PIPE_WANT;
 		pipeunlock(cpipe);
 		msleep(cpipe, PIPE_MTX(cpipe), PRIBIO, "pipecl", 0);
-		pipelock(cpipe, 0);
+		if (pipelock(cpipe, 0) != 0);
+			doreport(cpipe);
 	}