diff --git a/tests/generic/158 b/tests/generic/158
index 0da5daa9..dd645627 100755
--- a/tests/generic/158
+++ b/tests/generic/158
@@ -97,9 +97,17 @@ _dedupe_range $testdir1/file1 37 $testdir1/file1 59 23
 echo "Try overlapping dedupe"
 _dedupe_range $testdir1/file1 0 $testdir1/file1 1 $((blksz * 2))
 
-echo "Try dedupe past EOF"
+echo "Try dedupe from past EOF"
 _dedupe_range $testdir1/file1 $(( (blks + 10) * blksz)) $testdir1/file1 0 $blksz
 
+echo "Try dedupe to past EOF, destination offset beyond EOF"
+_dedupe_range $testdir1/file1 0 $testdir1/file1 $(( (blks + 10) * blksz)) \
+	$blksz
+
+echo "Try dedupe to past EOF, destination offset behind EOF"
+_dedupe_range $testdir1/file1 0 $testdir1/file1 $(( (blks - 1) * blksz)) \
+	$((blksz * 2))
+
 echo "Try to dedupe a dir"
 _dedupe_range $testdir1/dir1 0 $testdir1/file2 0 $blksz
 
diff --git a/tests/generic/158.out b/tests/generic/158.out
index 7f884034..9b82ddf6 100644
--- a/tests/generic/158.out
+++ b/tests/generic/158.out
@@ -7,7 +7,11 @@ Try unaligned dedupe
 dedupe: Invalid argument
 Try overlapping dedupe
 dedupe: Invalid argument
-Try dedupe past EOF
+Try dedupe from past EOF
+dedupe: Invalid argument
+Try dedupe to past EOF, destination offset beyond EOF
+dedupe: Invalid argument
+Try dedupe to past EOF, destination offset behind EOF
 dedupe: Invalid argument
 Try to dedupe a dir
 XFS_IOC_FILE_EXTENT_SAME: Is a directory