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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-09 11:34:06 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-09 11:34:06 +0800 |
| commit | 7ede5a5ba55a696a6e1d8456526e44635e966a81 (patch) | |
| tree | 95e934009410a0080fb8f41ee4eb6f203978fb1d /crypto/algapi.c | |
| parent | ef5d590c9b9a00b017683006fe4cf959b9532336 (diff) | |
| download | lwn-7ede5a5ba55a696a6e1d8456526e44635e966a81.tar.gz lwn-7ede5a5ba55a696a6e1d8456526e44635e966a81.zip | |
crypto: api - Fix crypto_drop_spawn crash on blank spawns
This patch allows crypto_drop_spawn to be called on spawns that
have not been initialised or have failed initialisation. This
fixes potential crashes during initialisation without adding
special case code.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algapi.c')
| -rw-r--r-- | crypto/algapi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c index 2154815201a7..6a98076d9d2a 100644 --- a/crypto/algapi.c +++ b/crypto/algapi.c @@ -507,6 +507,9 @@ EXPORT_SYMBOL_GPL(crypto_init_spawn2); void crypto_drop_spawn(struct crypto_spawn *spawn) { + if (!spawn->alg) + return; + down_write(&crypto_alg_sem); list_del(&spawn->list); up_write(&crypto_alg_sem); |