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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-09 11:34:06 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-09 11:34:06 +0800
commit7ede5a5ba55a696a6e1d8456526e44635e966a81 (patch)
tree95e934009410a0080fb8f41ee4eb6f203978fb1d /crypto/algapi.c
parentef5d590c9b9a00b017683006fe4cf959b9532336 (diff)
downloadlinux-7ede5a5ba55a696a6e1d8456526e44635e966a81.tar.gz
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.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c
index 2154815201a..6a98076d9d2 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);