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| author | Eric Blake <eblake@redhat.com> | 2016-04-01 09:57:02 -0600 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2016-04-05 17:23:21 +0200 |
| commit | 95c3df5a24e2f18129b58691c2ebaf0d86808525 (patch) | |
| tree | d16c0871122bf07bb6bce744b037c3350aa23f38 /block/crypto.c | |
| parent | 08db36f6ec29aff59c11c0f7524c2481d8a27636 (diff) | |
| download | qemu-95c3df5a24e2f18129b58691c2ebaf0d86808525.tar.gz | |
crypto: Avoid memory leak on failure
Commit 7836857 introduced a memory leak due to invalid use of
Error vs. visit_type_end(). If visiting the intermediate
members fails, we clear the error and unconditionally use
visit_end_struct() on the same error object; but if that
cleanup succeeds, we then skip the qapi_free call.
Until a later patch adds visit_check_struct(), the only safe
approach is to use two separate error objects.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1459526222-30052-1-git-send-email-eblake@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/crypto.c')
| -rw-r--r-- | block/crypto.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/block/crypto.c b/block/crypto.c index be3498581c..1903e84fbd 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -196,6 +196,7 @@ block_crypto_open_opts_init(QCryptoBlockFormat format, OptsVisitor *ov; QCryptoBlockOpenOptions *ret = NULL; Error *local_err = NULL; + Error *end_err = NULL; ret = g_new0(QCryptoBlockOpenOptions, 1); ret->format = format; @@ -218,10 +219,9 @@ block_crypto_open_opts_init(QCryptoBlockFormat format, error_setg(&local_err, "Unsupported block format %d", format); break; } - error_propagate(errp, local_err); - local_err = NULL; - visit_end_struct(opts_get_visitor(ov), &local_err); + visit_end_struct(opts_get_visitor(ov), &end_err); + error_propagate(&local_err, end_err); out: if (local_err) { @@ -242,6 +242,7 @@ block_crypto_create_opts_init(QCryptoBlockFormat format, OptsVisitor *ov; QCryptoBlockCreateOptions *ret = NULL; Error *local_err = NULL; + Error *end_err = NULL; ret = g_new0(QCryptoBlockCreateOptions, 1); ret->format = format; @@ -264,10 +265,9 @@ block_crypto_create_opts_init(QCryptoBlockFormat format, error_setg(&local_err, "Unsupported block format %d", format); break; } - error_propagate(errp, local_err); - local_err = NULL; - visit_end_struct(opts_get_visitor(ov), &local_err); + visit_end_struct(opts_get_visitor(ov), &end_err); + error_propagate(&local_err, end_err); out: if (local_err) { |