crypto: testmgr - Validate output length in (de)compression tests

When self-testing (de)compression algorithms, make sure the actual size of
the (de)compressed output data matches the expected output size.
Otherwise, in case the actual output size would be smaller than the expected
output size, the subsequent buffer compare test would still succeed, and no
error would be reported.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 67ff4aaa3c9ccb51096b8b42b6ab63ccfc1a0530..a75f11ffb957257d15d67b7eecf55c666466b0f5 100644 (file)
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -843,6 +843,14 @@ static int test_comp(struct crypto_comp *tfm, struct comp_testvec *ctemplate,
                        goto out;
                }
 
+               if (dlen != ctemplate[i].outlen) {
+                       printk(KERN_ERR "alg: comp: Compression test %d "
+                              "failed for %s: output len = %d\n", i + 1, algo,
+                              dlen);
+                       ret = -EINVAL;
+                       goto out;
+               }
+
                if (memcmp(result, ctemplate[i].output, dlen)) {
                        printk(KERN_ERR "alg: comp: Compression test %d "
                               "failed for %s\n", i + 1, algo);
@@ -867,6 +875,14 @@ static int test_comp(struct crypto_comp *tfm, struct comp_testvec *ctemplate,
                        goto out;
                }
 
+               if (dlen != dtemplate[i].outlen) {
+                       printk(KERN_ERR "alg: comp: Decompression test %d "
+                              "failed for %s: output len = %d\n", i + 1, algo,
+                              dlen);
+                       ret = -EINVAL;
+                       goto out;
+               }
+
                if (memcmp(result, dtemplate[i].output, dlen)) {
                        printk(KERN_ERR "alg: comp: Decompression test %d "
                               "failed for %s\n", i + 1, algo);