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qcow: fix memory leaks related to encryption

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Fix leak of the 'encryptopts' string, which was mistakenly
declared const.

Fix leak of QemuOpts entry which should not have been deleted
from the opts array.

Reported by: coverity
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170714103105.5781-1-berrange@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Daniel P. Berrange 2017-07-14 11:31:05 +01:00 committed by Max Reitz
parent 4c4414a438
commit 0696ae2c92
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
block/qcow.c
View File

@ -768,7 +768,7 @@ static int qcow_create(const char *filename, QemuOpts *opts, Error **errp)
Error *local_err = NULL;
int ret;
BlockBackend *qcow_blk;
const char *encryptfmt = NULL;
char *encryptfmt = NULL;
QDict *options;
QDict *encryptopts = NULL;
QCryptoBlockCreateOptions *crypto_opts = NULL;
@ -793,7 +793,7 @@ static int qcow_create(const char *filename, QemuOpts *opts, Error **errp)
goto cleanup;
}
} else if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ENCRYPT, false)) {
encryptfmt = "aes";
encryptfmt = g_strdup("aes");
}
ret = bdrv_create_file(filename, opts, &local_err);
@ -908,6 +908,7 @@ exit:
blk_unref(qcow_blk);
cleanup:
QDECREF(encryptopts);
g_free(encryptfmt);
qcrypto_block_free(crypto);
qapi_free_QCryptoBlockCreateOptions(crypto_opts);
g_free(backing_file);

7
block/qcow2.c
View File

@ -2905,7 +2905,7 @@ static int qcow2_create(const char *filename, QemuOpts *opts, Error **errp)
int version;
uint64_t refcount_bits;
int refcount_order;
const char *encryptfmt = NULL;
char *encryptfmt = NULL;
Error *local_err = NULL;
int ret;
@ -2916,14 +2916,14 @@ static int qcow2_create(const char *filename, QemuOpts *opts, Error **errp)
backing_fmt = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FMT);
encryptfmt = qemu_opt_get_del(opts, BLOCK_OPT_ENCRYPT_FORMAT);
if (encryptfmt) {
if (qemu_opt_get_del(opts, BLOCK_OPT_ENCRYPT)) {
if (qemu_opt_get(opts, BLOCK_OPT_ENCRYPT)) {
error_setg(errp, "Options " BLOCK_OPT_ENCRYPT " and "
BLOCK_OPT_ENCRYPT_FORMAT " are mutually exclusive");
ret = -EINVAL;
goto finish;
}
} else if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ENCRYPT, false)) {
encryptfmt = "aes";
encryptfmt = g_strdup("aes");
}
cluster_size = qcow2_opt_get_cluster_size_del(opts, &local_err);
if (local_err) {
@ -2983,6 +2983,7 @@ static int qcow2_create(const char *filename, QemuOpts *opts, Error **errp)
finish:
g_free(backing_file);
g_free(backing_fmt);
g_free(encryptfmt);
g_free(buf);
return ret;
}