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-rw-r--r--crypto/tcrypt.c449
1 files changed, 384 insertions, 65 deletions
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 24141fb6f5cb..1ab8c017a011 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -6,12 +6,16 @@
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
* Copyright (c) 2002 Jean-Francois Dive <jef@linuxbe.org>
+ * Copyright (c) 2007 Nokia Siemens Networks
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
+ * 2007-11-13 Added GCM tests
+ * 2007-11-13 Added AEAD support
+ * 2007-11-06 Added SHA-224 and SHA-224-HMAC tests
* 2006-12-07 Added SHA384 HMAC and SHA512 HMAC tests
* 2004-08-09 Added cipher speed tests (Reyk Floeter <reyk@vantronix.net>)
* 2003-09-14 Rewritten by Kartikey Mahendra Bhatt
@@ -71,22 +75,23 @@ static unsigned int sec;
static int mode;
static char *xbuf;
+static char *axbuf;
static char *tvmem;
static char *check[] = {
- "des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish",
- "twofish", "serpent", "sha384", "sha512", "md4", "aes", "cast6",
+ "des", "md5", "des3_ede", "rot13", "sha1", "sha224", "sha256",
+ "blowfish", "twofish", "serpent", "sha384", "sha512", "md4", "aes",
+ "cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
"arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta", "fcrypt",
- "camellia", "seed", NULL
+ "camellia", "seed", "salsa20", "lzo", NULL
};
static void hexdump(unsigned char *buf, unsigned int len)
{
- while (len--)
- printk("%02x", *buf++);
-
- printk("\n");
+ print_hex_dump(KERN_CONT, "", DUMP_PREFIX_OFFSET,
+ 16, 1,
+ buf, len, false);
}
static void tcrypt_complete(struct crypto_async_request *req, int err)
@@ -215,6 +220,238 @@ out:
crypto_free_hash(tfm);
}
+static void test_aead(char *algo, int enc, struct aead_testvec *template,
+ unsigned int tcount)
+{
+ unsigned int ret, i, j, k, temp;
+ unsigned int tsize;
+ char *q;
+ struct crypto_aead *tfm;
+ char *key;
+ struct aead_testvec *aead_tv;
+ struct aead_request *req;
+ struct scatterlist sg[8];
+ struct scatterlist asg[8];
+ const char *e;
+ struct tcrypt_result result;
+ unsigned int authsize;
+
+ if (enc == ENCRYPT)
+ e = "encryption";
+ else
+ e = "decryption";
+
+ printk(KERN_INFO "\ntesting %s %s\n", algo, e);
+
+ tsize = sizeof(struct aead_testvec);
+ tsize *= tcount;
+
+ if (tsize > TVMEMSIZE) {
+ printk(KERN_INFO "template (%u) too big for tvmem (%u)\n",
+ tsize, TVMEMSIZE);
+ return;
+ }
+
+ memcpy(tvmem, template, tsize);
+ aead_tv = (void *)tvmem;
+
+ init_completion(&result.completion);
+
+ tfm = crypto_alloc_aead(algo, 0, 0);
+
+ if (IS_ERR(tfm)) {
+ printk(KERN_INFO "failed to load transform for %s: %ld\n",
+ algo, PTR_ERR(tfm));
+ return;
+ }
+
+ req = aead_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ printk(KERN_INFO "failed to allocate request for %s\n", algo);
+ goto out;
+ }
+
+ aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &result);
+
+ for (i = 0, j = 0; i < tcount; i++) {
+ if (!aead_tv[i].np) {
+ printk(KERN_INFO "test %u (%d bit key):\n",
+ ++j, aead_tv[i].klen * 8);
+
+ crypto_aead_clear_flags(tfm, ~0);
+ if (aead_tv[i].wk)
+ crypto_aead_set_flags(
+ tfm, CRYPTO_TFM_REQ_WEAK_KEY);
+ key = aead_tv[i].key;
+
+ ret = crypto_aead_setkey(tfm, key,
+ aead_tv[i].klen);
+ if (ret) {
+ printk(KERN_INFO "setkey() failed flags=%x\n",
+ crypto_aead_get_flags(tfm));
+
+ if (!aead_tv[i].fail)
+ goto out;
+ }
+
+ authsize = abs(aead_tv[i].rlen - aead_tv[i].ilen);
+ ret = crypto_aead_setauthsize(tfm, authsize);
+ if (ret) {
+ printk(KERN_INFO
+ "failed to set authsize = %u\n",
+ authsize);
+ goto out;
+ }
+
+ sg_init_one(&sg[0], aead_tv[i].input,
+ aead_tv[i].ilen + (enc ? authsize : 0));
+
+ sg_init_one(&asg[0], aead_tv[i].assoc,
+ aead_tv[i].alen);
+
+ aead_request_set_crypt(req, sg, sg,
+ aead_tv[i].ilen,
+ aead_tv[i].iv);
+
+ aead_request_set_assoc(req, asg, aead_tv[i].alen);
+
+ ret = enc ?
+ crypto_aead_encrypt(req) :
+ crypto_aead_decrypt(req);
+
+ switch (ret) {
+ case 0:
+ break;
+ case -EINPROGRESS:
+ case -EBUSY:
+ ret = wait_for_completion_interruptible(
+ &result.completion);
+ if (!ret && !(ret = result.err)) {
+ INIT_COMPLETION(result.completion);
+ break;
+ }
+ /* fall through */
+ default:
+ printk(KERN_INFO "%s () failed err=%d\n",
+ e, -ret);
+ goto out;
+ }
+
+ q = kmap(sg_page(&sg[0])) + sg[0].offset;
+ hexdump(q, aead_tv[i].rlen);
+
+ printk(KERN_INFO "enc/dec: %s\n",
+ memcmp(q, aead_tv[i].result,
+ aead_tv[i].rlen) ? "fail" : "pass");
+ }
+ }
+
+ printk(KERN_INFO "\ntesting %s %s across pages (chunking)\n", algo, e);
+ memset(xbuf, 0, XBUFSIZE);
+ memset(axbuf, 0, XBUFSIZE);
+
+ for (i = 0, j = 0; i < tcount; i++) {
+ if (aead_tv[i].np) {
+ printk(KERN_INFO "test %u (%d bit key):\n",
+ ++j, aead_tv[i].klen * 8);
+
+ crypto_aead_clear_flags(tfm, ~0);
+ if (aead_tv[i].wk)
+ crypto_aead_set_flags(
+ tfm, CRYPTO_TFM_REQ_WEAK_KEY);
+ key = aead_tv[i].key;
+
+ ret = crypto_aead_setkey(tfm, key, aead_tv[i].klen);
+ if (ret) {
+ printk(KERN_INFO "setkey() failed flags=%x\n",
+ crypto_aead_get_flags(tfm));
+
+ if (!aead_tv[i].fail)
+ goto out;
+ }
+
+ sg_init_table(sg, aead_tv[i].np);
+ for (k = 0, temp = 0; k < aead_tv[i].np; k++) {
+ memcpy(&xbuf[IDX[k]],
+ aead_tv[i].input + temp,
+ aead_tv[i].tap[k]);
+ temp += aead_tv[i].tap[k];
+ sg_set_buf(&sg[k], &xbuf[IDX[k]],
+ aead_tv[i].tap[k]);
+ }
+
+ authsize = abs(aead_tv[i].rlen - aead_tv[i].ilen);
+ ret = crypto_aead_setauthsize(tfm, authsize);
+ if (ret) {
+ printk(KERN_INFO
+ "failed to set authsize = %u\n",
+ authsize);
+ goto out;
+ }
+
+ if (enc)
+ sg[k - 1].length += authsize;
+
+ sg_init_table(asg, aead_tv[i].anp);
+ for (k = 0, temp = 0; k < aead_tv[i].anp; k++) {
+ memcpy(&axbuf[IDX[k]],
+ aead_tv[i].assoc + temp,
+ aead_tv[i].atap[k]);
+ temp += aead_tv[i].atap[k];
+ sg_set_buf(&asg[k], &axbuf[IDX[k]],
+ aead_tv[i].atap[k]);
+ }
+
+ aead_request_set_crypt(req, sg, sg,
+ aead_tv[i].ilen,
+ aead_tv[i].iv);
+
+ aead_request_set_assoc(req, asg, aead_tv[i].alen);
+
+ ret = enc ?
+ crypto_aead_encrypt(req) :
+ crypto_aead_decrypt(req);
+
+ switch (ret) {
+ case 0:
+ break;
+ case -EINPROGRESS:
+ case -EBUSY:
+ ret = wait_for_completion_interruptible(
+ &result.completion);
+ if (!ret && !(ret = result.err)) {
+ INIT_COMPLETION(result.completion);
+ break;
+ }
+ /* fall through */
+ default:
+ printk(KERN_INFO "%s () failed err=%d\n",
+ e, -ret);
+ goto out;
+ }
+
+ for (k = 0, temp = 0; k < aead_tv[i].np; k++) {
+ printk(KERN_INFO "page %u\n", k);
+ q = kmap(sg_page(&sg[k])) + sg[k].offset;
+ hexdump(q, aead_tv[i].tap[k]);
+ printk(KERN_INFO "%s\n",
+ memcmp(q, aead_tv[i].result + temp,
+ aead_tv[i].tap[k] -
+ (k < aead_tv[i].np - 1 || enc ?
+ 0 : authsize)) ?
+ "fail" : "pass");
+
+ temp += aead_tv[i].tap[k];
+ }
+ }
+ }
+
+out:
+ crypto_free_aead(tfm);
+ aead_request_free(req);
+}
+
static void test_cipher(char *algo, int enc,
struct cipher_testvec *template, unsigned int tcount)
{
@@ -237,15 +474,11 @@ static void test_cipher(char *algo, int enc,
printk("\ntesting %s %s\n", algo, e);
tsize = sizeof (struct cipher_testvec);
- tsize *= tcount;
-
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize,
TVMEMSIZE);
return;
}
-
- memcpy(tvmem, template, tsize);
cipher_tv = (void *)tvmem;
init_completion(&result.completion);
@@ -269,33 +502,34 @@ static void test_cipher(char *algo, int enc,
j = 0;
for (i = 0; i < tcount; i++) {
- if (!(cipher_tv[i].np)) {
+ memcpy(cipher_tv, &template[i], tsize);
+ if (!(cipher_tv->np)) {
j++;
printk("test %u (%d bit key):\n",
- j, cipher_tv[i].klen * 8);
+ j, cipher_tv->klen * 8);
crypto_ablkcipher_clear_flags(tfm, ~0);
- if (cipher_tv[i].wk)
+ if (cipher_tv->wk)
crypto_ablkcipher_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
- key = cipher_tv[i].key;
+ key = cipher_tv->key;
ret = crypto_ablkcipher_setkey(tfm, key,
- cipher_tv[i].klen);
+ cipher_tv->klen);
if (ret) {
printk("setkey() failed flags=%x\n",
crypto_ablkcipher_get_flags(tfm));
- if (!cipher_tv[i].fail)
+ if (!cipher_tv->fail)
goto out;
}
- sg_init_one(&sg[0], cipher_tv[i].input,
- cipher_tv[i].ilen);
+ sg_init_one(&sg[0], cipher_tv->input,
+ cipher_tv->ilen);
ablkcipher_request_set_crypt(req, sg, sg,
- cipher_tv[i].ilen,
- cipher_tv[i].iv);
+ cipher_tv->ilen,
+ cipher_tv->iv);
ret = enc ?
crypto_ablkcipher_encrypt(req) :
@@ -319,11 +553,11 @@ static void test_cipher(char *algo, int enc,
}
q = kmap(sg_page(&sg[0])) + sg[0].offset;
- hexdump(q, cipher_tv[i].rlen);
+ hexdump(q, cipher_tv->rlen);
printk("%s\n",
- memcmp(q, cipher_tv[i].result,
- cipher_tv[i].rlen) ? "fail" : "pass");
+ memcmp(q, cipher_tv->result,
+ cipher_tv->rlen) ? "fail" : "pass");
}
}
@@ -332,41 +566,42 @@ static void test_cipher(char *algo, int enc,
j = 0;
for (i = 0; i < tcount; i++) {
- if (cipher_tv[i].np) {
+ memcpy(cipher_tv, &template[i], tsize);
+ if (cipher_tv->np) {
j++;
printk("test %u (%d bit key):\n",
- j, cipher_tv[i].klen * 8);
+ j, cipher_tv->klen * 8);
crypto_ablkcipher_clear_flags(tfm, ~0);
- if (cipher_tv[i].wk)
+ if (cipher_tv->wk)
crypto_ablkcipher_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
- key = cipher_tv[i].key;
+ key = cipher_tv->key;
ret = crypto_ablkcipher_setkey(tfm, key,
- cipher_tv[i].klen);
+ cipher_tv->klen);
if (ret) {
printk("setkey() failed flags=%x\n",
crypto_ablkcipher_get_flags(tfm));
- if (!cipher_tv[i].fail)
+ if (!cipher_tv->fail)
goto out;
}
temp = 0;
- sg_init_table(sg, cipher_tv[i].np);
- for (k = 0; k < cipher_tv[i].np; k++) {
+ sg_init_table(sg, cipher_tv->np);
+ for (k = 0; k < cipher_tv->np; k++) {
memcpy(&xbuf[IDX[k]],
- cipher_tv[i].input + temp,
- cipher_tv[i].tap[k]);
- temp += cipher_tv[i].tap[k];
+ cipher_tv->input + temp,
+ cipher_tv->tap[k]);
+ temp += cipher_tv->tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
- cipher_tv[i].tap[k]);
+ cipher_tv->tap[k]);
}
ablkcipher_request_set_crypt(req, sg, sg,
- cipher_tv[i].ilen,
- cipher_tv[i].iv);
+ cipher_tv->ilen,
+ cipher_tv->iv);
ret = enc ?
crypto_ablkcipher_encrypt(req) :
@@ -390,15 +625,15 @@ static void test_cipher(char *algo, int enc,
}
temp = 0;
- for (k = 0; k < cipher_tv[i].np; k++) {
+ for (k = 0; k < cipher_tv->np; k++) {
printk("page %u\n", k);
q = kmap(sg_page(&sg[k])) + sg[k].offset;
- hexdump(q, cipher_tv[i].tap[k]);
+ hexdump(q, cipher_tv->tap[k]);
printk("%s\n",
- memcmp(q, cipher_tv[i].result + temp,
- cipher_tv[i].tap[k]) ? "fail" :
+ memcmp(q, cipher_tv->result + temp,
+ cipher_tv->tap[k]) ? "fail" :
"pass");
- temp += cipher_tv[i].tap[k];
+ temp += cipher_tv->tap[k];
}
}
}
@@ -800,7 +1035,8 @@ out:
crypto_free_hash(tfm);
}
-static void test_deflate(void)
+static void test_comp(char *algo, struct comp_testvec *ctemplate,
+ struct comp_testvec *dtemplate, int ctcount, int dtcount)
{
unsigned int i;
char result[COMP_BUF_SIZE];
@@ -808,25 +1044,26 @@ static void test_deflate(void)
struct comp_testvec *tv;
unsigned int tsize;
- printk("\ntesting deflate compression\n");
+ printk("\ntesting %s compression\n", algo);
- tsize = sizeof (deflate_comp_tv_template);
+ tsize = sizeof(struct comp_testvec);
+ tsize *= ctcount;
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize,
TVMEMSIZE);
return;
}
- memcpy(tvmem, deflate_comp_tv_template, tsize);
+ memcpy(tvmem, ctemplate, tsize);
tv = (void *)tvmem;
- tfm = crypto_alloc_comp("deflate", 0, CRYPTO_ALG_ASYNC);
+ tfm = crypto_alloc_comp(algo, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
- printk("failed to load transform for deflate\n");
+ printk("failed to load transform for %s\n", algo);
return;
}
- for (i = 0; i < DEFLATE_COMP_TEST_VECTORS; i++) {
+ for (i = 0; i < ctcount; i++) {
int ilen, ret, dlen = COMP_BUF_SIZE;
printk("test %u:\n", i + 1);
@@ -845,19 +1082,20 @@ static void test_deflate(void)
ilen, dlen);
}
- printk("\ntesting deflate decompression\n");
+ printk("\ntesting %s decompression\n", algo);
- tsize = sizeof (deflate_decomp_tv_template);
+ tsize = sizeof(struct comp_testvec);
+ tsize *= dtcount;
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize,
TVMEMSIZE);
goto out;
}
- memcpy(tvmem, deflate_decomp_tv_template, tsize);
+ memcpy(tvmem, dtemplate, tsize);
tv = (void *)tvmem;
- for (i = 0; i < DEFLATE_DECOMP_TEST_VECTORS; i++) {
+ for (i = 0; i < dtcount; i++) {
int ilen, ret, dlen = COMP_BUF_SIZE;
printk("test %u:\n", i + 1);
@@ -918,6 +1156,8 @@ static void do_test(void)
test_hash("md4", md4_tv_template, MD4_TEST_VECTORS);
+ test_hash("sha224", sha224_tv_template, SHA224_TEST_VECTORS);
+
test_hash("sha256", sha256_tv_template, SHA256_TEST_VECTORS);
//BLOWFISH
@@ -969,6 +1209,18 @@ static void do_test(void)
AES_XTS_ENC_TEST_VECTORS);
test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
AES_XTS_DEC_TEST_VECTORS);
+ test_cipher("rfc3686(ctr(aes))", ENCRYPT, aes_ctr_enc_tv_template,
+ AES_CTR_ENC_TEST_VECTORS);
+ test_cipher("rfc3686(ctr(aes))", DECRYPT, aes_ctr_dec_tv_template,
+ AES_CTR_DEC_TEST_VECTORS);
+ test_aead("gcm(aes)", ENCRYPT, aes_gcm_enc_tv_template,
+ AES_GCM_ENC_TEST_VECTORS);
+ test_aead("gcm(aes)", DECRYPT, aes_gcm_dec_tv_template,
+ AES_GCM_DEC_TEST_VECTORS);
+ test_aead("ccm(aes)", ENCRYPT, aes_ccm_enc_tv_template,
+ AES_CCM_ENC_TEST_VECTORS);
+ test_aead("ccm(aes)", DECRYPT, aes_ccm_dec_tv_template,
+ AES_CCM_DEC_TEST_VECTORS);
//CAST5
test_cipher("ecb(cast5)", ENCRYPT, cast5_enc_tv_template,
@@ -1057,12 +1309,18 @@ static void do_test(void)
test_hash("tgr192", tgr192_tv_template, TGR192_TEST_VECTORS);
test_hash("tgr160", tgr160_tv_template, TGR160_TEST_VECTORS);
test_hash("tgr128", tgr128_tv_template, TGR128_TEST_VECTORS);
- test_deflate();
+ test_comp("deflate", deflate_comp_tv_template,
+ deflate_decomp_tv_template, DEFLATE_COMP_TEST_VECTORS,
+ DEFLATE_DECOMP_TEST_VECTORS);
+ test_comp("lzo", lzo_comp_tv_template, lzo_decomp_tv_template,
+ LZO_COMP_TEST_VECTORS, LZO_DECOMP_TEST_VECTORS);
test_hash("crc32c", crc32c_tv_template, CRC32C_TEST_VECTORS);
test_hash("hmac(md5)", hmac_md5_tv_template,
HMAC_MD5_TEST_VECTORS);
test_hash("hmac(sha1)", hmac_sha1_tv_template,
HMAC_SHA1_TEST_VECTORS);
+ test_hash("hmac(sha224)", hmac_sha224_tv_template,
+ HMAC_SHA224_TEST_VECTORS);
test_hash("hmac(sha256)", hmac_sha256_tv_template,
HMAC_SHA256_TEST_VECTORS);
test_hash("hmac(sha384)", hmac_sha384_tv_template,
@@ -1156,6 +1414,10 @@ static void do_test(void)
AES_XTS_ENC_TEST_VECTORS);
test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
AES_XTS_DEC_TEST_VECTORS);
+ test_cipher("rfc3686(ctr(aes))", ENCRYPT, aes_ctr_enc_tv_template,
+ AES_CTR_ENC_TEST_VECTORS);
+ test_cipher("rfc3686(ctr(aes))", DECRYPT, aes_ctr_dec_tv_template,
+ AES_CTR_DEC_TEST_VECTORS);
break;
case 11:
@@ -1167,7 +1429,9 @@ static void do_test(void)
break;
case 13:
- test_deflate();
+ test_comp("deflate", deflate_comp_tv_template,
+ deflate_decomp_tv_template, DEFLATE_COMP_TEST_VECTORS,
+ DEFLATE_DECOMP_TEST_VECTORS);
break;
case 14:
@@ -1291,6 +1555,34 @@ static void do_test(void)
camellia_cbc_dec_tv_template,
CAMELLIA_CBC_DEC_TEST_VECTORS);
break;
+ case 33:
+ test_hash("sha224", sha224_tv_template, SHA224_TEST_VECTORS);
+ break;
+
+ case 34:
+ test_cipher("salsa20", ENCRYPT,
+ salsa20_stream_enc_tv_template,
+ SALSA20_STREAM_ENC_TEST_VECTORS);
+ break;
+
+ case 35:
+ test_aead("gcm(aes)", ENCRYPT, aes_gcm_enc_tv_template,
+ AES_GCM_ENC_TEST_VECTORS);
+ test_aead("gcm(aes)", DECRYPT, aes_gcm_dec_tv_template,
+ AES_GCM_DEC_TEST_VECTORS);
+ break;
+
+ case 36:
+ test_comp("lzo", lzo_comp_tv_template, lzo_decomp_tv_template,
+ LZO_COMP_TEST_VECTORS, LZO_DECOMP_TEST_VECTORS);
+ break;
+
+ case 37:
+ test_aead("ccm(aes)", ENCRYPT, aes_ccm_enc_tv_template,
+ AES_CCM_ENC_TEST_VECTORS);
+ test_aead("ccm(aes)", DECRYPT, aes_ccm_dec_tv_template,
+ AES_CCM_DEC_TEST_VECTORS);
+ break;
case 100:
test_hash("hmac(md5)", hmac_md5_tv_template,
@@ -1317,6 +1609,15 @@ static void do_test(void)
HMAC_SHA512_TEST_VECTORS);
break;
+ case 105:
+ test_hash("hmac(sha224)", hmac_sha224_tv_template,
+ HMAC_SHA224_TEST_VECTORS);
+ break;
+
+ case 106:
+ test_hash("xcbc(aes)", aes_xcbc128_tv_template,
+ XCBC_AES_TEST_VECTORS);
+ break;
case 200:
test_cipher_speed("ecb(aes)", ENCRYPT, sec, NULL, 0,
@@ -1400,6 +1701,11 @@ static void do_test(void)
camellia_speed_template);
break;
+ case 206:
+ test_cipher_speed("salsa20", ENCRYPT, sec, NULL, 0,
+ salsa20_speed_template);
+ break;
+
case 300:
/* fall through */
@@ -1451,6 +1757,10 @@ static void do_test(void)
test_hash_speed("tgr192", sec, generic_hash_speed_template);
if (mode > 300 && mode < 400) break;
+ case 313:
+ test_hash_speed("sha224", sec, generic_hash_speed_template);
+ if (mode > 300 && mode < 400) break;
+
case 399:
break;
@@ -1467,20 +1777,21 @@ static void do_test(void)
static int __init init(void)
{
+ int err = -ENOMEM;
+
tvmem = kmalloc(TVMEMSIZE, GFP_KERNEL);
if (tvmem == NULL)
- return -ENOMEM;
+ return err;
xbuf = kmalloc(XBUFSIZE, GFP_KERNEL);
- if (xbuf == NULL) {
- kfree(tvmem);
- return -ENOMEM;
- }
+ if (xbuf == NULL)
+ goto err_free_tv;
- do_test();
+ axbuf = kmalloc(XBUFSIZE, GFP_KERNEL);
+ if (axbuf == NULL)
+ goto err_free_xbuf;
- kfree(xbuf);
- kfree(tvmem);
+ do_test();
/* We intentionaly return -EAGAIN to prevent keeping
* the module. It does all its work from init()
@@ -1488,7 +1799,15 @@ static int __init init(void)
* => we don't need it in the memory, do we?
* -- mludvig
*/
- return -EAGAIN;
+ err = -EAGAIN;
+
+ kfree(axbuf);
+ err_free_xbuf:
+ kfree(xbuf);
+ err_free_tv:
+ kfree(tvmem);
+
+ return err;
}
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.