1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
From patchwork Wed Apr 11 18:28:32 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: crypto: testmgr: Allow different compression results
From: Jan Glauber <jglauber@cavium.com>
X-Patchwork-Id: 10336001
Message-Id: <20180411182832.27761-1-jglauber@cavium.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S . Miller" <davem@davemloft.net>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
Mahipal Challa <mchalla@cavium.com>,
Balakrishna Bhamidipati <bbhamidipati@cavium.com>,
Jan Glauber <jglauber@cavium.com>
Date: Wed, 11 Apr 2018 20:28:32 +0200
From: Mahipal Challa <mchalla@cavium.com>
The following error is triggered by the ThunderX ZIP driver
if the testmanager is enabled:
[ 199.069437] ThunderX-ZIP 0000:03:00.0: Found ZIP device 0 177d:a01a on Node 0
[ 199.073573] alg: comp: Compression test 1 failed for deflate-generic: output len = 37
The reason for this error is the verification of the compression
results. Verifying the compression result only works if all
algorithm parameters are identical, in this case to the software
implementation.
Different compression engines like the ThunderX ZIP coprocessor
might yield different compression results by tuning the
algorithm parameters. In our case the compressed result is
shorter than the test vector.
We should not forbid different compression results but only
check that compression -> decompression yields the same
result. This is done already in the acomp test. Do something
similar for test_comp().
Signed-off-by: Mahipal Challa <mchalla@cavium.com>
Signed-off-by: Balakrishna Bhamidipati <bbhamidipati@cavium.com>
[jglauber@cavium.com: removed unrelated printk changes, rewrote commit msg,
fixed whitespace and unneeded initialization]
Signed-off-by: Jan Glauber <jglauber@cavium.com>
---
crypto/testmgr.c | 50 +++++++++++++++++++++++++++++++++++++-------------
1 file changed, 37 insertions(+), 13 deletions(-)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index af4a01c..627e82e 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1342,19 +1342,30 @@ static int test_comp(struct crypto_comp *tfm,
int ctcount, int dtcount)
{
const char *algo = crypto_tfm_alg_driver_name(crypto_comp_tfm(tfm));
+ char *output, *decomp_output;
unsigned int i;
- char result[COMP_BUF_SIZE];
int ret;
+ output = kmalloc(COMP_BUF_SIZE, GFP_KERNEL);
+ if (!output)
+ return -ENOMEM;
+
+ decomp_output = kmalloc(COMP_BUF_SIZE, GFP_KERNEL);
+ if (!decomp_output) {
+ kfree(output);
+ return -ENOMEM;
+ }
+
for (i = 0; i < ctcount; i++) {
int ilen;
unsigned int dlen = COMP_BUF_SIZE;
- memset(result, 0, sizeof (result));
+ memset(output, 0, sizeof(COMP_BUF_SIZE));
+ memset(decomp_output, 0, sizeof(COMP_BUF_SIZE));
ilen = ctemplate[i].inlen;
ret = crypto_comp_compress(tfm, ctemplate[i].input,
- ilen, result, &dlen);
+ ilen, output, &dlen);
if (ret) {
printk(KERN_ERR "alg: comp: compression failed "
"on test %d for %s: ret=%d\n", i + 1, algo,
@@ -1362,7 +1373,17 @@ static int test_comp(struct crypto_comp *tfm,
goto out;
}
- if (dlen != ctemplate[i].outlen) {
+ ilen = dlen;
+ dlen = COMP_BUF_SIZE;
+ ret = crypto_comp_decompress(tfm, output,
+ ilen, decomp_output, &dlen);
+ if (ret) {
+ pr_err("alg: comp: compression failed: decompress: on test %d for %s failed: ret=%d\n",
+ i + 1, algo, -ret);
+ goto out;
+ }
+
+ if (dlen != ctemplate[i].inlen) {
printk(KERN_ERR "alg: comp: Compression test %d "
"failed for %s: output len = %d\n", i + 1, algo,
dlen);
@@ -1370,10 +1391,11 @@ static int test_comp(struct crypto_comp *tfm,
goto out;
}
- if (memcmp(result, ctemplate[i].output, dlen)) {
- printk(KERN_ERR "alg: comp: Compression test %d "
- "failed for %s\n", i + 1, algo);
- hexdump(result, dlen);
+ if (memcmp(decomp_output, ctemplate[i].input,
+ ctemplate[i].inlen)) {
+ pr_err("alg: comp: compression failed: output differs: on test %d for %s\n",
+ i + 1, algo);
+ hexdump(decomp_output, dlen);
ret = -EINVAL;
goto out;
}
@@ -1383,11 +1405,11 @@ static int test_comp(struct crypto_comp *tfm,
int ilen;
unsigned int dlen = COMP_BUF_SIZE;
- memset(result, 0, sizeof (result));
+ memset(decomp_output, 0, sizeof(COMP_BUF_SIZE));
ilen = dtemplate[i].inlen;
ret = crypto_comp_decompress(tfm, dtemplate[i].input,
- ilen, result, &dlen);
+ ilen, decomp_output, &dlen);
if (ret) {
printk(KERN_ERR "alg: comp: decompression failed "
"on test %d for %s: ret=%d\n", i + 1, algo,
@@ -1403,10 +1425,10 @@ static int test_comp(struct crypto_comp *tfm,
goto out;
}
- if (memcmp(result, dtemplate[i].output, dlen)) {
+ if (memcmp(decomp_output, dtemplate[i].output, dlen)) {
printk(KERN_ERR "alg: comp: Decompression test %d "
"failed for %s\n", i + 1, algo);
- hexdump(result, dlen);
+ hexdump(decomp_output, dlen);
ret = -EINVAL;
goto out;
}
@@ -1415,11 +1437,13 @@ static int test_comp(struct crypto_comp *tfm,
ret = 0;
out:
+ kfree(decomp_output);
+ kfree(output);
return ret;
}
static int test_acomp(struct crypto_acomp *tfm,
- const struct comp_testvec *ctemplate,
+ const struct comp_testvec *ctemplate,
const struct comp_testvec *dtemplate,
int ctcount, int dtcount)
{
|
