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| author | Jonathan Corbet <corbet@lwn.net> | 2011-11-02 09:15:16 +1100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2011-11-02 09:15:16 +1100 |
| commit | fb223c32b4d3ee593c8dce07e983680d06abe387 (patch) | |
| tree | 80b88c2adde46fdd5608989929d54bddf38b513a /crypto | |
| parent | 5db017aa2809c49ca0a43b0f3ed1267e6be60883 (diff) | |
| download | lwn-fb223c32b4d3ee593c8dce07e983680d06abe387.tar.gz lwn-fb223c32b4d3ee593c8dce07e983680d06abe387.zip | |
crypto: user - Fix rwsem leak in crypto_user
The list_empty case in crypto_alg_match() will return without calling
up_read() on crypto_alg_sem. We could do the "goto out" routine, but the
function will clearly do the right thing with that test simply removed.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/crypto_user.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c index 2abca780312d..0605a2bbba75 100644 --- a/crypto/crypto_user.c +++ b/crypto/crypto_user.c @@ -44,9 +44,6 @@ static struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact) down_read(&crypto_alg_sem); - if (list_empty(&crypto_alg_list)) - return NULL; - list_for_each_entry(q, &crypto_alg_list, cra_list) { int match = 0; |